CN107979105A - Intelligent phase electricity output switch and its control method - Google Patents
Intelligent phase electricity output switch and its control method Download PDFInfo
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- CN107979105A CN107979105A CN201610922612.5A CN201610922612A CN107979105A CN 107979105 A CN107979105 A CN 107979105A CN 201610922612 A CN201610922612 A CN 201610922612A CN 107979105 A CN107979105 A CN 107979105A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The invention discloses intelligent phase electricity output switch and its control method.It is related to three-phase four-wire power delivery outlet phase electric separation and selects technical field, it can make the loading interfaces power supply phase malleable of three-phase four-wire power, and it can be exchanged automatically according to the uneven loading interfaces power supply phase that carries out of power factor (PF) on three-phase, including A phases, B phases, C phases, zero curve N, three loading interfaces, controller and several nodes and the three-phase activity coefficient monitor being connected respectively with controller, interface power factor monitor, two phase voltage sample circuits, two Single-Phase Inverter Sources, two filters, two isolating transformers, two loading interfaces voltage sampling circuits and several switches；The change of the input phase electricity between each loading interfaces is realized by the control of controller.
Description
Technical field
The present invention relates to three-phase four-wire power delivery outlet phase electric separation to select technical field, and in particular to intelligent phase electricity output exchanges
Device and its control method.
Background technology
With the development of economy and society, the type of electrical equipment is more and more.Since current electric power system is typically all
Three-phase power supply system, in three-phase power supply system, if larger asymmetry occurs in the power factor (PF) on three-phase, just occurs
The off-center operation of power grid, just occurs that power grid is shaken.
When operation of power networks is in non-equilibrium state, the transformer in power grid is at asymmetric operation state, in not right
Claim the transformer of operating status the zero-sequence current of transformer can be made excessive, excessive zero-sequence current can make the local part of transformer
Temperature increases, if the local Part temperature of transformer increase it is excessive may can burn transformer, so as to cause electric power system
Power outage.
When unbalanced power supply is run, if to allow the power grid of off-center operation to be changed into the power grid of balance movement, at present
The method taken is that the part load manual switching in the high power phase line of an a wide range of section is big to another
In the low-power phase line of scope section.Since the load that this switching mode switches in moment is more, cause rushing for moment switching
Hitting that electric current is excessive, excessive dash current can not only burn out switching equipment, due also in load switching at that moment, the load
The front and rear power supply phase line difference of switching can cause the loaded work piece to occur chaotic or even damage.
The content of the invention
The present invention is to solve the deficiency of the loading interfaces of existing three-phase four-wire power power supply mutually not malleable, there is provided one
Kind can make the loading interfaces power supply phase malleable of three-phase four-wire power, and can be loaded according to power factor (PF) imbalance on three-phase
Interface power supply is mutually automatic to be exchanged, safe, good reliability, itself switching failure of energy autonomous detection combination switch, also
The switching of combination switch can be carried out in the correct time point of current zero-crossing point, the high intelligent phase electricity output of intelligence degree exchanges dress
Put and its control method.
To achieve these goals, the present invention uses following technical scheme：
Intelligent phase electricity output switch, including A phase, B phase, C phase, zero curve N, A connection jaws, B connection jaws, C connection jaws, one
Number loading interfaces, No. two loading interfaces, No. three loading interfaces, controller, node J1, node J2, node J3, node J4, node
J5, node J6, node J7 and node J8；
Further include the three-phase activity coefficient monitor being connected respectively with controller, No.1 phase voltage sample circuit, No.1 list
Phase inverter, No.1 filter, No.1 isolating transformer, No.1 loading interfaces voltage sampling circuit, interface power factor prison
Device, No. two phase voltage sample circuits, No. two Single-Phase Inverter Sources, No. two filters are surveyed, No. two isolating transformers, No. two loads connect
Mouth voltage sampling circuit, switch K1, switch K2, switch K3, switch K4, switch K5, switch K6, switch K7, switch K8, switch
K9, switch K10, switch K11, switch K12, switch K13, switch K14, switch K15, switch K16, switch K17, switch K18, open
Close K19, switch K20 and switch K21；
A is connected on the firewire input terminal of A connection jaws, and B is connected on the firewire input terminal of B connection jaws, and C is connected
On the firewire input terminal of C connection jaws, the zero curve input terminal of A connection jaws, the zero of the zero curve input terminal of B connection jaws and C connection jaws
Line input terminal is connected with zero curve N；
Switch a samplings of one end of K19, a monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, a sampling ends of No. two phase voltage sample circuits, the one end for switching K1, the output terminal of A connection jaws, the one end for switching K9, switch
One end of K13 and one end of switch K15 are connected with node J1 respectively；
Switch the b samplings of one end of K20, the b monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, the b sampling ends of No. two phase voltage sample circuits, the one end for switching K2, the output terminal of B connection jaws, the one end for switching K8, switch
One end of K12 and one end of switch K14 are connected with node J2 respectively；
Switch the c samplings of one end of K21, the c monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, the c sampling ends of No. two phase voltage sample circuits, the one end for switching K3, the output terminal of C connection jaws, the one end for switching K7, switch
One end of K10 and one end of switch K11 are connected with node J3 respectively；
The power output end of No.1 isolating transformer, the sampling end of No.1 loading interfaces voltage sampling circuit, switch K4's
One end of one end, the one end for switching K5 and switch K6 is connected with node J4 respectively；
The power output end of No. two isolating transformers, the sampling end of No. two loading interfaces voltage sampling circuits, switch K16
One end of one end, the one end for switching K17 and switch K18 is connected with node J5 respectively；
The other end for switching K4, the other end, the other end, the other end, the interface work(of switch K14 of switch K10 that switch K9
The No.1 monitoring side of rate factor monitor and No.1 loading interfaces are connected with node J6 respectively；
The other end for switching K5, the other end, the other end, the other end, the interface work(of switch K15 of switch K11 that switch K8
No. two monitoring sides of rate factor monitor and No. two loading interfaces are connected with node J7 respectively；
The other end for switching K6, the other end, the other end, the other end, the interface work(of switch K13 of switch K12 that switch K7
No. three monitoring sides of rate factor monitor and No. three loading interfaces are connected with node J8 respectively；
Switch the other end of K1, the other end of switch K2 and switch electricity of the other end of K3 with No.1 Single-Phase Inverter Source
Source input terminal connection, the input terminal of No.1 filter are connected on the power output end of No.1 Single-Phase Inverter Source, No.1 filtering
The output terminal of device is connected on the power input of No.1 isolating transformer；
Switch K19 the other end, switch K20 the other end and switch K21 the other end with No. two Single-Phase Inverter Sources
Power input connection, the input terminal of No. two filters is connected on the power output end of No. two Single-Phase Inverter Sources, No. two
The output terminal of filter is connected on the power input of No. two isolating transformers；
Switch K1, switch K2, switch K3, switch K7, switch K8, switch K9, switch K10, switch K11, switch K12, open
It is the identical combination switch of circuit structure to close K13, switch K14, switch K15, switch K19, switch K20 and switch K21；
Combination switch includes No.1 node, No. two nodes, No.1 switch, No. two switches, No. three switches, No. four switches, five
Number switch, No. six switch, node Msa, node Mb, node Mc, node Md, node Me, inductance La, capacitance Ca, capacitance C0, capacitance C2、
Diode D1, diode D2, diode D3, diode D4, photoelectrical coupler OPT, resistance R0, resistance R1, resistance R2, switching switch
Ka, Magnetic driving electric power road, silicon drive circuit, from electricity consumption power supply module and ground terminal SGND, controller include pulse counter；
Switching switch KaIncluding reverse-blocking tetrode thyristor KbK is switched with magnetic latching relayc, photoelectrical coupler OPT includes light emitting diode D5With
Phototriode Q0；Reverse-blocking tetrode thyristor KbOne end and magnetic latching relay switch KcOne end be connected respectively with No.1 node, can
Control transwitch KbThe other end, No.1 switch one end, No. three switch one end, No. four switch one end and inductance LaOne end
Respectively with node MaConnection, inductance LaThe other end, capacitance CaOne end, No. two switch one end, No. five switch one end and six
Number switch one end respectively with node MbConnection, magnetic latching relay switch KcThe other end, No.1 switch the other end and No. two
The other end of switch respectively with node McConnection, capacitance C2One end, No. four switch the other end, diode D1Positive terminal and
Diode D3Negative pole end respectively with node MdConnection, diode D2Positive terminal, diode D4Negative pole end, capacitance C0One end
With resistance R2One end respectively with node MeConnection, the other end of No. three switches are connected with one end of resistance R1, and resistance R1's is another
End and capacitance C2Other end connection, the other ends and the capacitance C of No. five switches0The other end connection, No. six switch the other ends with
Resistance R2The other end connection, capacitance CaThe other end be connected on No. two nodes, diode D1Negative pole end and diode D2's
Negative pole end is connected to light emitting diode D5Positive terminal on, diode D3Positive terminal and diode D4Positive terminal difference
It is connected to light emitting diode D5Negative pole end on, phototriode Q0Collector terminal respectively with resistance R0One end and controller
Connection, phototriode Q0Emitter be connected with signal ground end SGND, from electricity consumption power supply module respectively with resistance R0It is another
End, Magnetic driving circuit, silicon drive circuit are connected with controller, silicon drive circuit respectively with reverse-blocking tetrode thyristor KbControl terminal and control
Device connection processed, Magnetic driving circuit switch K with magnetic latching relay respectivelycControl terminal connected with controller；
No.1 node can only be conducted with wherein one in A phases, B phases and C phases this three-phases and be connected in discontinuity surface when same；
No. two nodes are connected on zero curve N.
This programme can make the loading interfaces power supply phase malleable of three-phase four-wire power, and can be according to power factor (PF) on three-phase not
Balance carries out loading interfaces power supply and mutually exchanges automatically, and securely and reliably, intelligence degree is high.
Preferably, No.1 loading interfaces are quick connector, quick connector includes plug and housing, in the upper of housing
Insulation tube is fixed with surface upwards, the pressure sensor being connected with controller is equipped with the outer tube wall of insulation tube, exhausted
The through hole being connected with the inner cavity of housing is fixed with the housing upper surface that edge pipe surrounds, contact pin is fixed with through hole, and
The lower end of contact pin is located at the interior intracavitary of housing, and the upper end of contact pin is located in insulation tube；The both ends of a piece conducting wire are conductively connected respectively
On the lower end of contact pin and node J6；The contact tube that plug includes insulation intubation and is arranged in insulation intubation；Insulation intubation
Internal diameter is matched with the outside diameter of insulation tube, and the diameter of contact pin is matched with the internal diameter of contact tube；The structure of No. two loading interfaces and No. three
The structure of loading interfaces is identical with the structure of No.1 loading interfaces；Cone is equipped with the top of contact pin.
Preferably, further include the memory being connected respectively with controller, wireless module, address scrambler and server.
A kind of control method for being suitable for intelligent phase electricity output switch, the zero passage that control method includes combination switch are thrown
Cut control process, when combination switch as zero crossing fling-cut switch in use, the combination switch operating passing zero control process
It is as follows：
(4-1) puts into combination switch；
(4-1-1) first detects voltage U in C phases when to put into combination switch to C phasesCNCorrect time point during zero crossing,
As voltage UCNDuring zero crossing, controller is immediately to reverse-blocking tetrode thyristor KbSend conductivity control signal, reverse-blocking tetrode thyristor KbLead immediately
It is logical；
(4-1-2) is as reverse-blocking tetrode thyristor KbAfter turning on setting time, electric current I is first detected1Correct time point during zero crossing,
As electric current I1During zero crossing, controller switchs K to magnetic latching relay immediatelycClosure control signal is sent, magnetic latching relay is opened
Close KcClose immediately；
(4-1-3) and then electric current I is detected again1Correct time point during zero crossing, as electric current I1During zero crossing, controller
Immediately to reverse-blocking tetrode thyristor KbSend shut-off control signal, reverse-blocking tetrode thyristor KbTurn off, only opened at this time by magnetic latching relay immediately
Close KcCurrent supply circuit work is kept, so far completes combination switch devoting oneself to work to C phases；
(4-2) cuts off combination switch；
(4-2-1) first detects electric current I when the combination switch in C phases to be cut off1Correct time point during zero crossing, when
Electric current I1During zero crossing, controller is immediately to reverse-blocking tetrode thyristor KbSend conductivity control signal, reverse-blocking tetrode thyristor KbTurn on immediately,
Delay a period of time makes reverse-blocking tetrode thyristor KbReliable conducting；
(4-2-2) is in reverse-blocking tetrode thyristor KbIn the case of conducting, electric current I is detected again1Correct time point during zero crossing,
As electric current I1During zero crossing, controller switchs K to magnetic latching relay immediatelycDisconnection control signal is sent, magnetic latching relay is opened
Close KcThen turn off；
(4-2-3) and then electric current I is detected again1Correct time point during zero crossing, as electric current I1During zero crossing, controller
Immediately to reverse-blocking tetrode thyristor KbSend shut-off control signal, reverse-blocking tetrode thyristor KbTurn off immediately；So far combination switch is from C phases
Excision completely.
A kind of control method suitable for intelligent phase electricity output switch, control method include loading interfaces power supply mutually certainly
Dynamic exchange process, mutually automatic exchange process is as follows for loading interfaces power supply：
(5-1) sets power factor PAC=| | A phase power factors |-| the power factor of C phases | |, power factor PAB=| | A phases
Power factor |-| the power factor of B phases | |, power factor PBC=| | B phase power factors |-| the power factor of C phases | |；
(5-2) three-phase activity coefficient monitor carries out power factor respectively in setting time interval to A phases, B phases and C phases
Balance monitoring, and the monitoring data of every phase are uploaded to controller respectively, controller is immediately on three-phase activity coefficient monitor
The monitoring data of biography carry out calculating processing；
If controller obtains current power after carrying out calculating processing to the monitoring data that three-phase activity coefficient monitor uploads
Factor it is maximum be mutually A phases, current power factor minimum is mutually C phases, and power factor P at this timeACMore than setting value P0
When, then it needs to be determined that it is currently by A phases, B phases and C respectively to go out No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces
Mutually which in this three-phase is mutually powered to it；
(5-3) controller sends interface monitor instruction, the monitoring of interface power factor to interface power factor monitor immediately
Device is immediately carried out at the same time the power factor in No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces monitoring, and will
Monitoring data in No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces are uploaded to controller respectively, and controller is stood
The monitoring data uploaded to interface power-factor monitoring device carry out calculating processing；
It can be determined respectively after the monitoring data that controller uploads interface power-factor monitoring device carry out calculating processing
Which in A phases, B phases and C phases this three-phases goes out No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces is currently by respectively
One phase is powered to it；
If determining at this time, the power supply in No.1 loading interfaces is mutually powered by A phases, and the power supply in No. two loading interfaces is mutually by B
Mutually power, the power supply in No. three loading interfaces is mutually powered by C phases, then switch K7, switch K8 and switch K9 at this time are in closing
Conjunction state, switch K1, switch K2, switch K3, switch K4, switch K5, switch K6, switch K10, switch K11, switch at this time
K12, switch K13, switch K14, switch K15, switch K16, switch K17 and switch K18 are in off-state, No.1 at this time
The sample trap cutter spacing of phase voltage sample circuit is on d ends, and the sample trap cutter spacing of No. two phase voltage sample circuits is on d ends；
(5-4) is that the absolute value for making power factor in A phases, B phases and C phases two-by-two after the difference of absolute value is less than setting value
P0, then need the power supply in No.1 loading interfaces mutually powering change by A phases to be powered by C phases, the power supply in No. two loading interfaces
Mutually still powered by B phases, the power supply in No. three loading interfaces mutually powers change to be powered by A phases by C phases；
Power supply in No.1 loading interfaces is mutually powered change to be powered by C phases and by No. three loading interfaces by (5-5) by A phases
Power supply mutually by C phases power become for powered by A phases loading interfaces power supply mutually automatically exchange process it is as follows：
(5-5-1) first, allows the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to a of No.1 phase voltage sample circuit
It is connected on sampling end with A, the voltage signal of No.1 phase voltage sample circuit collection A phases is simultaneously uploaded to controller；
Then, switch K1 closures are allowed No.1 Single-Phase Inverter Source is connected with A；Under the control of the controller, No.1 list
Phase inverter output voltage signal with the voltage signal of A phases as reference, with No.1 Single-Phase Inverter Source export voltage
Signal forms No.1 closed-loop control, produces No.1 drive signal in the controller, make No.1 single-phase inversion electric as feedback signal
The No.1 voltage waveform of source output exports stable No.1 by No.1 isolating transformer again after first passing through the filtering of No.1 filter
Sine-wave power, and make the No.1 sine-wave power of No.1 isolating transformer output and A phase voltages same under the control of the controller
Amplitude same-phase；
Then, it is closed at switch K4 and disconnects switch K9, the state of the power supply phase in No.1 loading interfaces is still at this time
It is identical with the state of the power supply phase in A phases；
Then, still allow switch K1 to close, allow the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to No.1 phase voltage
It is connected on the c sampling ends of sample circuit with C, the voltage signal of No.1 phase voltage sample circuit collection C phases is simultaneously uploaded to control
Device；Controller uses phase shifting control, the voltage signal that No.1 Single-Phase Inverter Source exports is used as ginseng using the voltage signal of C phases
Examine, using the voltage signal of No.1 Single-Phase Inverter Source output as feedback signal, new No.1 closed-loop control is formed, in controller
The No.1 drive signal of middle generation SPWM, makes the No.1 voltage waveform that No.1 Single-Phase Inverter Source exports first pass through No.1 filter
Again by the stable No.1 sine-wave power of No.1 isolating transformer output after filtering, and make under the control of the controller No.1 every
From transformer output No.1 sine-wave power and C phase voltages with amplitude same-phase, the power supply phase in No.1 loading interfaces at this time
State it is identical with the state of the power supply phase in C phases；
(5-5-2) similarly, allows the sampling plug-in strip of No. two phase voltage sample circuits to be connected to the c of No. two phase voltage sample circuits
It is connected on sampling end with C, the voltage signal of No. two phase voltage sample circuit collection C phases is simultaneously uploaded to controller；
Then, switch K21 closures are allowed No. two Single-Phase Inverter Sources is connected with C；Under the control of the controller, No. two lists
The voltage signal of phase inverter output with the voltage signal of C phases as reference, with the voltage of No. two Single-Phase Inverter Sources output
Signal forms No. two closed-loop controls, produces No. two drive signals in the controller, make No. two single-phase inversion electricity as feedback signal
No. two voltage waveforms of source output export stable No. two by No. two isolating transformers again after first passing through No. two filter filterings
Sine-wave power, and make No. two sine-wave powers of No. two isolating transformers output and C phase voltages same under the control of the controller
Amplitude same-phase；
Then, be closed at switch K18 and disconnect switch K7, at this time the state of the power supply phase in No. three loading interfaces also with
The state of power supply phase in C phases is identical；
Then, still allow switch K21 to close, allow the sampling plug-in strip of No. two phase voltage sample circuits to be connected to No. two phase voltages
It is connected on a sampling ends of sample circuit with A, the voltage signal of No. two phase voltage sample circuit collection A phases is simultaneously uploaded to control
Device；Controller uses phase shifting control, the voltage signal of No. two Single-Phase Inverter Source output is used as ginseng using the voltage signal of A phases
Examine, using the voltage signal of No. two Single-Phase Inverter Source output as feedback signal, No. two new closed-loop controls are formed, in controller
No. two drive signals of middle generation SPWM, make No. two voltage waveforms of No. two Single-Phase Inverter Source outputs first pass through No. two filters
Again by No. two stable sine-wave powers of No. two isolating transformers output after filtering, and make under the control of the controller No. two every
From transformer output No. two sine-wave powers and A phase voltages with amplitude same-phase, the power supply phase in No. three loading interfaces at this time
State it is identical with the state of the power supply phase in A phases；
(5-5-3) then, is closed at switch K10, disconnects switch K4, closure switch K13 and disconnects switch K18, at this time
Power supply in No.1 loading interfaces is mutually powered by C phases completely, and the power supply in No. three loading interfaces is mutually powered by A phases completely；
(5-5-4) finally, the sample trap knife of No.1 phase voltage sample circuit is turned on d ends, and No. two phase voltages are adopted
The sample trap knife of sample circuit is turned on d ends, is disconnected switch K1 and is disconnected switch K21, so that No.1 phase voltage sample circuit,
No.1 Single-Phase Inverter Source, No.1 filter, No.1 isolating transformer, No. two phase voltage sample circuits, No. two single-phase inversion electricity
Source, No. two filters and No. two isolating transformers exit the operation that loading interfaces power supply mutually exchanges automatically；
(5-5-5) so far, by the power supply in No.1 loading interfaces mutually powers change to be powered by C phases and being born No. three by A phases
Power supply on load interface is mutually powered to become by C phases to be terminated into the automatic exchange process of loading interfaces power supply phase powered by A phases；
(5-5-6) similarly, the power supply phase in No.1 loading interfaces, the power supply phase in No. two loading interfaces and No. three are loaded
Mutually the principle that is exchanged two-by-two becomes to be supplied by C phases with the power supply in No.1 loading interfaces is mutually powered by A phases for power supply on interface
Electricity with by No. three loading interfaces power supply mutually by C phases power change into the principle powered by A phases it is identical.
A kind of control method for being suitable for intelligent phase electricity output switch, if intelligent phase electricity output switch has two
When, then the two intelligent phase electricity output switches can be exchanged the two intelligent phase electricity outputs by respective wireless module
Device carries out mutual wireless signal connection；
When only one of which loading interfaces connect in three loading interfaces in first intelligent phase electricity output switch
Load is connected to, and only two of which loading interfaces connect in three loading interfaces in second intelligent phase electricity output switch
When being connected to load；
If this loading interfaces of first intelligent phase electricity output switch determine it is to allow the after being powered by A phases
The two loading interfaces of two intelligent phase electricity output switches are powered by B phases respectively powers with C phases.
A kind of control method for being suitable for intelligent phase electricity output switch, what control method included combination switch itself throws
Cut breakdown judge process, when combination switch as fault self-checking switch in use, due to the combination switch itself switching failure
Including reverse-blocking tetrode thyristor KbCan not conducting failure, magnetic latching relay switch KcCan not close failure, magnetic latching relay is opened
Close KcCan not disconnect failure and reverse-blocking tetrode thyristor KbCan not turn off failure；Therefore, combination switch itself switching failure is judged
Process includes：
(7-1) judges reverse-blocking tetrode thyristor KbFor can not the process of conducting failure be：
When putting into combination switch, it is assumed that reverse-blocking tetrode thyristor KbIt is off state, and magnetic latching relay switch KcAlso locate
On the premise of off-state,
(7-1-1) is first from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent, controller waits reverse-blocking tetrode thyristor Kb
Operation detecting circuit return start pulse signal, and with the pulse counter of controller carry out triggering trigger pulse count,
When be delayed 0.2s after, if the trigger pulse number that receives of controller is more than 5, you can think reverse-blocking tetrode thyristor KbCan be just
Often conducting, if the trigger pulse number that controller receives is less than setting number,
(7-1-2) is again from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent, and pulse counter is reset, then
After secondary delay 0.2s, if the trigger pulse number that receives of controller is still less than 5, you can judge reverse-blocking tetrode thyristor KbFor
Can not conducting failure；
(7-2) judges that magnetic latching relay switchs KcIt is for the process of failure can not be closed：
When putting into combination switch, it is assumed that reverse-blocking tetrode thyristor KbEnergy normally, and reverse-blocking tetrode thyristor KbIt has been on shape
State and magnetic latching relay switch KcOn the premise of being off,
(7-2-1) first switchs K from controller to magnetic latching relaycSend closure control signal, and by pulse counter
Reset, be delayed after 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than 20 when,
(7-2-2) switchs K from controller to magnetic latching relay againcSend disconnection control signal, and by pulse counter
Reset, then be delayed after the 0.6s times, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than also 20 when,
(7-2-3) switchs K from controller to magnetic latching relay againcSend closure control signal, and by step-by-step counting
Device is reset, and is delayed again after 0.6s, at this time if controller receives reverse-blocking tetrode thyristor KbTrigger pulse count still greater than 20
When a, you can judge that the magnetic latching relay switchs KcFor failure can not be closed；
(7-3) judges that magnetic latching relay switchs KcIt is for the process of failure can not be disconnected：
When cutting off combination switch, it is assumed that reverse-blocking tetrode thyristor KbEnergy normally, and reverse-blocking tetrode thyristor KbIn disconnection shape
State and magnetic latching relay switch KcOn the premise of being in closure state,
(7-3-1) is first from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent by reverse-blocking tetrode thyristor KbConducting, and prolong
When 0.4s after allow reverse-blocking tetrode thyristor KbReliable conducting, and switch K from controller to magnetic latching relaycDisconnection control signal is sent,
And reset pulse counter, after waiting 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be less than 20
When a；
(7-3-2) switchs K from controller to magnetic latching relay againcSend disconnection control signal, and by pulse counter
Reset, after again waiting for 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number still less than 20 when, you can
Judge that magnetic latching relay switchs KcFor failure can not be disconnected；
(7-4) judges reverse-blocking tetrode thyristor KbIt is for the process of failure can not be turned off：
When cutting off combination switch, it is assumed that magnetic latching relay switchs KcCan normally it disconnect, and magnetic latching relay switch Kc
It has been off and reverse-blocking tetrode thyristor KbOn the premise of also in conducting state,
(7-4-1) is first from controller to reverse-blocking tetrode thyristor KbShut-off control signal is sent, and pulse counter is reset, is prolonged
When 0.2s after, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than 5 when；
(7-4-2) is again from controller to reverse-blocking tetrode thyristor KbShut-off control signal is sent, and pulse counter is reset, then
After secondary delay 0.2s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number still greater than 5 when, you can judge controllable
Transwitch KbFor failure can not be turned off.
A kind of control method for being suitable for intelligent phase electricity output switch, combination switch further include what is be connected with controller
Timer and the software extinguishing arc module being arranged in controller；
Since photoelectrical coupler OPT has certain conduction voltage drop and transmission delay, so controller receives photoelectrical coupler OPT
Current output signal UIOWith delay, when controller determines the current output signal U of photoelectrical coupler OPTIOZero crossing
When, actual current may go to other nonzero values, and the electric current that photoelectrical coupler OPT is determined this generates controller is defeated
Go out signal UIOLag time t during zero crossing1；
Due also to magnetic latching relay switchs KcBlade of knife switch need to overcome relay contacts pressure could blade of knife switch from
Pulled open on relay contacts, this generates magnetic latching relay to switch KcRelay action time delay t2；
Lag time and delay time in view of above objective reality；Since every phase current of three-phase electricity is in three phase power
Corresponding current waveform L can be all formed in factor monitor respectively；
When needing to gather the current waveform L of certain phase in A phases, B phases and C phase this three-phase, controller startup software extinguishing arc mould
Block reads the waveform pass zero point time t for the current waveform L that phase is corresponded in three phase power factor monitor0, and detecting waveform
Zero crossing time t0When opening timing device；
If the cycle of current waveform L is T, if N is positive integer；And set controller and send and close to magnetic latching relay switch Kc
It is t that combined floodgate order when closing control signal, which sends time point, then：
Magnetic latching relay switch times for thoroughly closing a floodgate of Kc can be calculated according to t；Since magnetic latching relay switchs
KcCombined floodgate duration and disconnected lock duration it is equal, so controller to magnetic latching relay switch KcSend when disconnecting control signal
It is also t that disconnected lock order, which sends time point,.
Preferably, start the electric current that phase is corresponded in software extinguishing arc module reading three phase power factor monitor in controller
The waveform pass zero point time t of waveform L0When, since the correct time point of waveform just zero passage is not easy to obtain；Therefore, using in electricity
The average at calculate this after time point twice time point twice is read on the zero crossing section waveform of stream waveform L as current waveform L's
Waveform pass zero point time t0Value；
If the time point for being located at twi-read on the zero crossing section waveform of current waveform L is respectively t3 and t4, then：
Formula (2), which is substituted into formula (1), then to be had：
The present invention can reach following effect：
Can make three-phase four-wire power loading interfaces power phase malleable, and can according to power factor (PF) imbalance on three-phase into
Row loading interfaces are powered and are mutually exchanged automatically, safe, good reliability, itself switching event of energy autonomous detection combination switch
Barrier, moreover it is possible to carry out the switching of combination switch in the correct time point of current zero-crossing point, intelligence degree is high.Network load can be strengthened
The flexibility of switching, also enhances the reliability that phase cutting is changed, and can greatly improve the stability and reliability of operation of power networks.
Brief description of the drawings
Fig. 1 is that the power supply in No.1 loading interfaces is mutually powered by A phases, the power supply in No. two loading interfaces is mutually powered by B phases
A kind of schematic diagram of circuit principle connecting structure when mutually being powered with the power supply in No. three loading interfaces by C phases.
Fig. 2 be the sampling plug-in strip of No.1 phase voltage sample circuit be connected on a sampling ends of No.1 phase voltage sample circuit,
The sampling plug-in strip of No. two phase voltage sample circuits is connected on the c sampling ends of No. two phase voltage sample circuits, closure switch K1 and
A kind of schematic diagram of circuit principle connecting structure during closure switch K21.
Fig. 3 is one in closure switch K4, disconnection switch K9, closure switch K18 and disconnection switch K7 on the basis of Fig. 2
Kind schematic diagram of circuit principle connecting structure.
Fig. 4 is to allow the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to the sampling of No.1 phase voltage on the basis of Fig. 3
On the c sampling ends of circuit and allow the sampling plug-in strip of No. two phase voltage sample circuits to be connected to a of No. two phase voltage sample circuits to adopt
A kind of schematic diagram of circuit principle connecting structure when on sample end.
Fig. 5 is to allow the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to the sampling of No.1 phase voltage on the basis of Fig. 4
On the d sampling ends of circuit, the sampling plug-in strip of No. two phase voltage sample circuits is allowed to be connected to the d samplings of No. two phase voltage sample circuits
On end, closure switch K10, disconnect switch K4, closure switch K13 and disconnect switch K18 when a kind of circuit theory connection structure
Schematic diagram.
Fig. 6 is that switch K1 is disconnected on the basis of Fig. 4 and disconnects switch K21, so far by the power supply in No.1 loading interfaces
Mutually powered by A phases after becoming to be powered by C phases and the power supply in No. three loading interfaces mutually being powered change to be powered by A phases by C phases
A kind of schematic diagram of circuit principle connecting structure.
Fig. 7 is mutually powered by B phases for the power supply in No.1 loading interfaces and is mutually powered with the power supply in No. two loading interfaces by A phases
A kind of schematic diagram of circuit principle connecting structure.
Fig. 8 is mutually powered by C phases for the power supply in No. two loading interfaces and is mutually powered with the power supply in No. three loading interfaces by B phases
A kind of schematic diagram of circuit principle connecting structure.
Fig. 9 is that the contact tube of plug is not inserted into a kind of attachment structure schematic diagram not being connected in insulation tube also.
Figure 10 is that the contact tube of plug is already inserted into a kind of attachment structure schematic diagram being connected in insulation tube.
Figure 11 is a kind of schematic diagram of circuit principle connecting structure at combination switch.
Figure 12 is reverse-blocking tetrode thyristor KbA kind of waveform diagram.
Figure 13 is to read the current waveform schematic diagram that current system realizes combined floodgate or disconnected lock.
Embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment 1：Intelligent phase electricity output switch, referring to shown in Fig. 1 and Figure 11, including A phase, B phase, C phase, zero curve N,
A connection jaws, B connection jaws, C connection jaws, the loading interfaces 822, three of No.1 loading interfaces 811, two loading interfaces 833, control
Device 107, node J1, node J2, node J3, node J4, node J5, node J6, node J7 and node J8；
Further include the three-phase activity coefficient monitor 101 being connected respectively with controller, No.1 phase voltage sample circuit 102,
No.1 Single-Phase Inverter Source 103, No.1 filter 104, No.1 isolating transformer 105, No.1 loading interfaces voltage sampling circuit
108th, 1030, No. two filterings of the phase voltage sample circuit 110, two of interface power factor monitor 109, two Single-Phase Inverter Source
Device 1040,1050, No. two loading interfaces voltage sampling circuits 1080 of No. two isolating transformers, switch K1, switch K2, switch K3,
Switch K4, switch K5, switch K6, switch K7, switch K8, switch K9, switch K10, switch K11, switch K12, switch K13, open
Close K14, switch K15, switch K16, switch K17, switch K18, switch K19, switch K20 and switch K21；
A is connected on the firewire input terminal of A connection jaws, and B is connected on the firewire input terminal of B connection jaws, and C is connected
On the firewire input terminal of C connection jaws, the zero curve input terminal of A connection jaws, the zero of the zero curve input terminal of B connection jaws and C connection jaws
Line input terminal is connected with zero curve N；
Switch a samplings of one end of K19, a monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, a sampling ends of No. two phase voltage sample circuits, the one end for switching K1, the output terminal of A connection jaws, the one end for switching K9, switch
One end of K13 and one end of switch K15 are connected with node J1 respectively；
Switch the b samplings of one end of K20, the b monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, the b sampling ends of No. two phase voltage sample circuits, the one end for switching K2, the output terminal of B connection jaws, the one end for switching K8, switch
One end of K12 and one end of switch K14 are connected with node J2 respectively；
Switch the c samplings of one end of K21, the c monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, the c sampling ends of No. two phase voltage sample circuits, the one end for switching K3, the output terminal of C connection jaws, the one end for switching K7, switch
One end of K10 and one end of switch K11 are connected with node J3 respectively；
The power output end of No.1 isolating transformer, the sampling end of No.1 loading interfaces voltage sampling circuit, switch K4's
One end of one end, the one end for switching K5 and switch K6 is connected with node J4 respectively；
The power output end of No. two isolating transformers, the sampling end of No. two loading interfaces voltage sampling circuits, switch K16
One end of one end, the one end for switching K17 and switch K18 is connected with node J5 respectively；
The other end for switching K4, the other end, the other end, the other end, the interface work(of switch K14 of switch K10 that switch K9
The No.1 monitoring side of rate factor monitor and No.1 loading interfaces are connected with node J6 respectively；
The other end for switching K5, the other end, the other end, the other end, the interface work(of switch K15 of switch K11 that switch K8
No. two monitoring sides of rate factor monitor and No. two loading interfaces are connected with node J7 respectively；
The other end for switching K6, the other end, the other end, the other end, the interface work(of switch K13 of switch K12 that switch K7
No. three monitoring sides of rate factor monitor and No. three loading interfaces are connected with node J8 respectively；
Switch the other end of K1, the other end of switch K2 and switch electricity of the other end of K3 with No.1 Single-Phase Inverter Source
Source input terminal connection, the input terminal of No.1 filter are connected on the power output end of No.1 Single-Phase Inverter Source, No.1 filtering
The output terminal of device is connected on the power input of No.1 isolating transformer；
Switch K19 the other end, switch K20 the other end and switch K21 the other end with No. two Single-Phase Inverter Sources
Power input connection, the input terminal of No. two filters is connected on the power output end of No. two Single-Phase Inverter Sources, No. two
The output terminal of filter is connected on the power input of No. two isolating transformers；
Switch K1, switch K2, switch K3, switch K7, switch K8, switch K9, switch K10, switch K11, switch K12, open
It is the identical combination switch of circuit structure to close K13, switch K14, switch K15, switch K19, switch K20 and switch K21；
Combination switch includes 701, No. two nodes 702 of No.1 node, No.1 switchs 2011, No. two switches 2021, three and opens
Close 2031, No. four switches 2041, five switch 2051, six switch 2061, node Msa, node Mb, node Mc, node Md, node
Me, inductance La, capacitance Ca, capacitance C0, capacitance C2, diode D1, diode D2, diode D3, diode D4, photoelectrical coupler
OPT, resistance R0, resistance R1, resistance R2, switching switch Ka, Magnetic driving electric power road 502, silicon drive circuit 503, from electricity consumption power mould
Block 901 and ground terminal SGND, controller 107 include pulse counter 805；Switching switch KaIncluding reverse-blocking tetrode thyristor KbAnd magnetic
Guard relay switchs Kc, photoelectrical coupler OPT includes light emitting diode D5With phototriode Q0；Reverse-blocking tetrode thyristor KbOne
End and magnetic latching relay switch KcOne end be connected respectively with No.1 node, reverse-blocking tetrode thyristor KbThe other end, No.1 switch
One end, No. three one end switched, No. four one end switched and inductance LaOne end respectively with node MaConnection, inductance LaIt is another
End, capacitance CaOne end, No. two switch one end, No. five switch one end and No. six switch one end respectively with node MbConnection,
Magnetic latching relay switchs KcThe other end, No.1 switch the other end and No. two switch the other ends respectively with node McConnection,
Capacitance C2One end, No. four switch the other end, diode D1Positive terminal and diode D3Negative pole end respectively with node MdEven
Connect, diode D2Positive terminal, diode D4Negative pole end, capacitance C0One end and resistance R2One end respectively with node MeEven
Connect, the other end of No. three switches is connected with one end of resistance R1, the other end and the capacitance C of resistance R12The other end connection, No. five
The other end of switch and capacitance C0Other end connection, the other ends and the resistance R of No. six switches2The other end connection, capacitance Ca's
The other end is connected on No. two nodes, diode D1Negative pole end and diode D2Negative pole end be connected to light emitting diode
D5Positive terminal on, diode D3Positive terminal and diode D4Positive terminal be connected to light emitting diode D5Negative pole end
On, phototriode Q0Collector terminal respectively with resistance R0One end connected with controller, phototriode Q0Emitter with
The SGND connections of signal ground end, from electricity consumption power supply module respectively with resistance R0The other end, Magnetic driving circuit, silicon drive circuit and
Controller connect, silicon drive circuit respectively with reverse-blocking tetrode thyristor KbControl terminal connected with controller, Magnetic driving circuit respectively with
Magnetic latching relay switchs KcControl terminal connected with controller；
No.1 node 701 can only be with the wherein company of being conducted in A phases, B phases and C phases this three-phases in discontinuity surface when same
Connect；No. two nodes 702 are connected on zero curve N.
When in use, No.1 node is connected on the firewire C of power supply, No. two nodes is connected on the zero curve N of power supply.
In the combination switch of this programme, inductance LaUsing high-frequency inductor, inductance LaInductance be tens microhenrys.When controllable
Transwitch KbOr magnetic latching relay switch KcMoment is turned on, the impedance of capacitance Ca is about 0, and due to inductance LaPresence, inductance
LaIn conducting moment, its frequency changes very greatly, inductance LaImpedance it is also very big, it is suppressed that power supply turn on moment dash current；When
When circuit works normally, since supply frequency is 50Hz power frequencies, then inductance LaImpedance very little.
In inductance LaIn, inductance LaVoltage ULaAdvanced inductance LaElectric current I190 degree, i.e. inductance LaElectric current I1Fall behind electricity
Feel LaVoltage ULa90 degree.
In capacitance C0In, capacitance C0Electric current I2Advanced capacitance C0Voltage UC090 degree, i.e. capacitance C0Voltage UC0Fall behind electricity
Hold C0Electric current I290 degree.
Electric current I1Pass through inductance La, capacitance Ca formed closed circuit, then have inductance LaOn voltage ULaAdvanced inductance LaOn
Electric current I190 degree.
As inductance LaVoltage ULaIn node M sometimeaPoint for just, node MbPoint for it is negative when, then electric current I2From node
MaPoint passes through diode D1, light emitting diode D5, diode D4With capacitance C0Form branch.
Ignore diode D1, light emitting diode D5With diode D4Pressure drop, it is clear that have i.e. ULa=UC0, i.e. inductance LaElectricity
Press ULaEqual to capacitance C0Voltage UC0.Obviously there is inductance LaOn voltage ULaLag capacitance C0On electric current I290 degree, so as to have
Capacitance C0On electric current I2With inductance LaOn electric current I1Each other reversely, i.e. electric current I2With electric current I1It is reverse each other.UCNIt is on firewire C
Voltage.For sake of convenience, A phases, B phases are collectively referred to as firewire with C phases.
As electric current I2It is positive and be more than light emitting diode D5During luminous minimum current, the output signal U of photoelectrical couplerIO
It is changed into low level from high level, reasonably selects capacitance C0, make capacitance C0On electric current I2Positive zero crossing and hair can be rapidly achieved
Optical diode D5Luminous minimum current.
As electric current I2After positive zero crossing, the output signal U of photoelectrical couplerIOIt is changed into low level from high level, due to
Electric current I2With electric current I1Reversely, then there is the output signal U when photoelectrical couplerIOWhen being changed into high level from low level, electric current I1Just
In positive zero crossing.Therefore the output signal U of photoelectrical couplerIOWhen being changed into high level from low level, that is, obtain electric current I1
Zero crossing electric current.When obtaining electric current I1Zero crossing electric current when, controller can immediately give magnetic latching relay switch KcHair
Go out signal is opened or closed.Magnetic latching relay is allowed to switch K if desiredcDisconnect, then controller is just opened to magnetic latching relay
Close KcSend disconnection control signal, magnetic latching relay switch KcThen turn off；Magnetic latching relay is allowed to switch K if desiredcClose
Close, then controller just switchs K to magnetic latching relaycSend closure control signal, magnetic latching relay switch KcClose immediately.
Correct time point during from by obtaining current zero-crossing point, K is switched further according to the correct time point to magnetic latching relaycSend
The control signal being opened or closed make magnetic latching relay switch KcContact be opened or closed, then flow through magnetic keep relay
Device switchs KcElectric current it is small, be opened or closed in low current magnetic latching relay switch KcSo that magnetic latching relay switchs Kc
Contact be hardly damaged.So as to effectively extend magnetic latching relay switch KcService life, and then extend combination switch
Service life.
When putting into combination switch, because reverse-blocking tetrode thyristor KbThe moment of conducting, due to inductance LaElectric current inhibitory action,
Big dash current will not occur, and due to reverse-blocking tetrode thyristor KbConduction voltage drop very little, and inductance LaThe impedance under work frequency
Very little, node MaAnd node MbThe pressure drop of point-to-point transmission is smaller, closes magnetic latching relay switch K at this timec, to magnetic latching relay
Switch KcContact infringement very little, so as to effectively extend control transwitch KbService life, and then extend the use of combination switch
Service life.
In reverse-blocking tetrode thyristor KbIt is on and magnetic latching relay switchs KcDuring in closure, if to turn off silicon-controlled
Switch Kb, then in electric current I1Just allow reverse-blocking tetrode thyristor K during zero crossingbDisconnect, so can effectively protect reverse-blocking tetrode thyristor KbMake
Use the service life.
The reverse-blocking tetrode thyristor K of combination switch is only put into firewire CbWhen just use and put into during voltage over zero, only
Want all to be put into or cut off using current over-zero in the case of having electric current on combination switch, substantially increase combination switch
Service life, reliability is higher, and security is preferable.
As reverse-blocking tetrode thyristor KbDuring conducting, K is switched in magnetic latching relaycIn the case of being also not turned off, magnetic at this time is protected
Hold relay switch KcAnd conducting, you can control transwitch KbK is switched with magnetic latching relaycIt is on shape at the same time at this time
State.Due to reverse-blocking tetrode thyristor KbBranch has inductance LaConducting resistance, it is clear that magnetic latching relay switch KcThe impedance of branch will
Far smaller than reverse-blocking tetrode thyristor KbThe impedance of branch, therefore flow through magnetic latching relay switch KcElectric current be more than flow through it is silicon-controlled
Switch KbThe electric current of branch.If magnetic latching relay switchs KcNot in current zero-crossing point break contact, contact is easily damaged.From logical
Cross acquisition inductance LaThe electric current I of branch1Correct time point during zero crossing, then allow controller to send control signal and protected to disconnect magnetic
Hold relay switch KcContact, allow magnetic latching relay switch KcClosed when electric current is smaller or disconnection acts, thus
Not easy burn-out magnetic latching relay switch KcOn contact, effectively extend magnetic latching relay switch KcService life, into
And the service life of combination switch is also extended, simple in structure, reliability is high.
A kind of control method for being suitable for intelligent phase electricity output switch：
(1), the operating passing zero control process of control method including combination switch, when combination switch as zero crossing throwing
Cut and close in use, the operating passing zero control process of the combination switch is as follows：
(4-1) puts into combination switch；
(4-1-1) first detects voltage U in C phases when to put into combination switch to C phasesCNCorrect time point during zero crossing,
As voltage UCNDuring zero crossing, controller is immediately to reverse-blocking tetrode thyristor KbSend conductivity control signal, reverse-blocking tetrode thyristor KbLead immediately
It is logical；
(4-1-2) is as reverse-blocking tetrode thyristor KbAfter turning on setting time, electric current I is first detected1Correct time point during zero crossing,
As electric current I1During zero crossing, controller switchs K to magnetic latching relay immediatelycClosure control signal is sent, magnetic latching relay is opened
Close KcClose immediately；
(4-1-3) and then electric current I is detected again1Correct time point during zero crossing, as electric current I1During zero crossing, controller
Immediately to reverse-blocking tetrode thyristor KbSend shut-off control signal, reverse-blocking tetrode thyristor KbTurn off, only opened at this time by magnetic latching relay immediately
Close KcCurrent supply circuit work is kept, so far completes combination switch devoting oneself to work to C phases；
(4-2) cuts off combination switch；
(4-2-1) first detects electric current I when the combination switch in C phases to be cut off1Correct time point during zero crossing, when
Electric current I1During zero crossing, controller is immediately to reverse-blocking tetrode thyristor KbSend conductivity control signal, reverse-blocking tetrode thyristor KbTurn on immediately,
Delay a period of time makes reverse-blocking tetrode thyristor KbReliable conducting；
(4-2-2) is in reverse-blocking tetrode thyristor KbIn the case of conducting, electric current I is detected again1Correct time point during zero crossing,
As electric current I1During zero crossing, controller switchs K to magnetic latching relay immediatelycDisconnection control signal is sent, magnetic latching relay is opened
Close KcThen turn off；
(4-2-3) and then electric current I is detected again1Correct time point during zero crossing, as electric current I1During zero crossing, controller
Immediately to reverse-blocking tetrode thyristor KbSend shut-off control signal, reverse-blocking tetrode thyristor KbTurn off immediately；So far combination switch is from C phases
Excision completely.
(2), control method further includes the mutually automatic exchange process of loading interfaces power supply, and loading interfaces power supply is mutually automatic to be exchanged
Process is as follows：
(5-1) sets power factor PAC=| | A phase power factors |-| the power factor of C phases | |, power factor PAB=| | A phases
Power factor |-| the power factor of B phases | |, power factor PBC=| | B phase power factors |-| the power factor of C phases | |；
(5-2) three-phase activity coefficient monitor carries out power factor respectively in setting time interval to A phases, B phases and C phases
Balance monitoring, and the monitoring data of every phase are uploaded to controller respectively, controller is immediately on three-phase activity coefficient monitor
The monitoring data of biography carry out calculating processing；
If controller obtains current power after carrying out calculating processing to the monitoring data that three-phase activity coefficient monitor uploads
Factor it is maximum be mutually A phases, current power factor minimum is mutually C phases, and power factor P at this timeACMore than setting value P0
When, then it needs to be determined that it is currently by A phases, B phases and C respectively to go out No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces
Mutually which in this three-phase is mutually powered to it；
(5-3) controller sends interface monitor instruction, the monitoring of interface power factor to interface power factor monitor immediately
Device is immediately carried out at the same time the power factor in No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces monitoring, and will
Monitoring data in No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces are uploaded to controller respectively, and controller is stood
The monitoring data uploaded to interface power-factor monitoring device carry out calculating processing；
It can be determined respectively after the monitoring data that controller uploads interface power-factor monitoring device carry out calculating processing
Which in A phases, B phases and C phases this three-phases goes out No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces is currently by respectively
One phase is powered to it；
Shown in Figure 1, if determining at this time, the power supply in No.1 loading interfaces is mutually powered by A phases, No. two loading interfaces
On power supply mutually powered by B phases, power supply in No. three loading interfaces is mutually powered by C phases, then switch K7, switch K8 at this time and is opened
Close K9 and be in closure state, switch K1 at this time, switch K2, switch K3, switch K4, switch K5, switch K6, switch K10, open
Close K11, switch K12, switch K13, switch K14, switch K15, switch K16, switch K17 and switch K18 and be in off-state,
The sample trap cutter spacing of No.1 phase voltage sample circuit at this time is on d ends, and the sample trap cutter spacing of No. two phase voltage sample circuits is in d
On end；
(5-4) is that the absolute value for making power factor in A phases, B phases and C phases two-by-two after the difference of absolute value is less than setting value
P0, then need the power supply in No.1 loading interfaces mutually powering change by A phases to be powered by C phases, the power supply in No. two loading interfaces
Mutually still powered by B phases, the power supply in No. three loading interfaces mutually powers change to be powered by A phases by C phases；
Power supply in No.1 loading interfaces is mutually powered change to be powered by C phases and by No. three loading interfaces by (5-5) by A phases
Power supply mutually by C phases power become for powered by A phases loading interfaces power supply mutually automatically exchange process it is as follows：
(5-5-1) first, allows the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to a of No.1 phase voltage sample circuit
It is connected on sampling end with A, shown in Figure 2, the voltage signal of No.1 phase voltage sample circuit collection A phases is simultaneously uploaded to control
Device；
Then, switch K1 closures are allowed No.1 Single-Phase Inverter Source is connected with A；It is shown in Figure 3, in the control of controller
Under system, No.1 Single-Phase Inverter Source output voltage signal with the voltage signal of A phases as reference, with No.1 Single-Phase Inverter Source
The voltage signal of output forms No.1 closed-loop control, produces No.1 drive signal in the controller, make No.1 as feedback signal
The No.1 voltage waveform of Single-Phase Inverter Source output is exported by No.1 isolating transformer again after first passing through the filtering of No.1 filter
Stable No.1 sine-wave power, and make under the control of the controller No.1 isolating transformer export No.1 sine-wave power with
A phase voltages are the same as amplitude same-phase；
Then, it is closed at switch K4 and disconnects switch K9, the state of the power supply phase in No.1 loading interfaces is still at this time
It is identical with the state of the power supply phase in A phases；
Then, still allow switch K1 to close, allow the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to No.1 phase voltage
It is connected on the c sampling ends of sample circuit with C, shown in Figure 4, No.1 phase voltage sample circuit gathers the voltage signal of C phases
And it is uploaded to controller；Controller uses phase shifting control, makes the voltage signal that No.1 Single-Phase Inverter Source exports with the voltage of C phases
Signal as reference, using the voltage signal of No.1 Single-Phase Inverter Source output as feedback signal, forms new No.1 closed loop control
System, produces the No.1 drive signal of SPWM in the controller, the No.1 voltage waveform that No.1 Single-Phase Inverter Source exports first is passed through
Cross after the filtering of No.1 filter again by the stable No.1 sine-wave power of No.1 isolating transformer output, and in the control of controller
The No.1 sine-wave power that No.1 isolating transformer exports is set to be connect with C phase voltages with amplitude same-phase, at this time No.1 load under system
The state of power supply phase on mouth is identical with the state of the power supply phase in C phases；
(5-5-2) similarly, allows the sampling plug-in strip of No. two phase voltage sample circuits to be connected to the c of No. two phase voltage sample circuits
It is connected on sampling end with C, shown in Figure 2, the voltage signal of No. two phase voltage sample circuit collection C phases is simultaneously uploaded to control
Device；
Then, switch K21 closures are allowed No. two Single-Phase Inverter Sources is connected with C；It is shown in Figure 3, in controller
Under control, the voltage signal of No. two Single-Phase Inverter Sources output with the voltage signal of C phases as reference, with No. two single-phase inversion electricity
The voltage signal of source output forms No. two closed-loop controls, produces No. two drive signals in the controller, make two as feedback signal
No. two voltage waveforms of number Single-Phase Inverter Source output first pass through defeated by No. two isolating transformers again after No. two filters filterings
Go out No. two stable sine-wave powers, and make No. two sine-wave powers of No. two isolating transformer output under the control of the controller
With C phase voltages with amplitude same-phase；
Then, be closed at switch K18 and disconnect switch K7, at this time the state of the power supply phase in No. three loading interfaces also with
The state of power supply phase in C phases is identical；
Then, still allow switch K21 to close, allow the sampling plug-in strip of No. two phase voltage sample circuits to be connected to No. two phase voltages
It is connected on a sampling ends of sample circuit with A, shown in Figure 4, the voltage signal of No. two phase voltage sample circuit collection A phases
And it is uploaded to controller；Controller uses phase shifting control, makes the voltage signal of No. two Single-Phase Inverter Source output with the voltage of A phases
Signal as reference, using the voltage signal of No. two Single-Phase Inverter Source output as feedback signal, forms No. two new closed loop controls
System, produces No. two drive signals of SPWM in the controller, No. two voltage waveforms of No. two Single-Phase Inverter Source outputs is first passed through
Cross after No. two filter filterings again by No. two stable sine-wave powers of No. two isolating transformer output, and in the control of controller
No. two sine-wave powers of No. two isolating transformer outputs are made to be connect with A phase voltages with amplitude same-phase, at this time No. three loads under system
The state of power supply phase on mouth is identical with the state of the power supply phase in A phases；
(5-5-3) then, is closed at switch K10, disconnects switch K4, closure switch K13 and disconnects switch K18, referring to
Shown in Fig. 5, the power supply in No.1 loading interfaces at this time is mutually powered by C phases completely, and the power supply in No. three loading interfaces is mutually completely by A
Mutually power；
(5-5-4) finally, the sample trap knife of No.1 phase voltage sample circuit is turned on d ends, and No. two phase voltages are adopted
The sample trap knife of sample circuit is turned on d ends, disconnects switch K1 and disconnection switchs K21, shown in Figure 6, so that No.1 phase
Voltage sampling circuit, No.1 Single-Phase Inverter Source, No.1 filter, No.1 isolating transformer, No. two phase voltage sample circuits, two
Number Single-Phase Inverter Source, No. two filters and No. two isolating transformers exit the operation that loading interfaces power supply mutually exchanges automatically；
(5-5-5) so far, by the power supply in No.1 loading interfaces mutually powers change to be powered by C phases and being born No. three by A phases
Power supply on load interface is mutually powered to become by C phases to be terminated into the automatic exchange process of loading interfaces power supply phase powered by A phases；
(5-5-6) similarly, the power supply phase in No.1 loading interfaces, the power supply phase in No. two loading interfaces and No. three are loaded
Mutually the principle that is exchanged two-by-two becomes to be supplied by C phases with the power supply in No.1 loading interfaces is mutually powered by A phases for power supply on interface
Electricity with by No. three loading interfaces power supply mutually by C phases power change into the principle powered by A phases it is identical.
It is shown in Figure 7, in No.1 loading interfaces power supply mutually by B phases power with No. two loading interfaces power supply mutually by
A phases are powered.
It is shown in Figure 8, in No. two loading interfaces power supply mutually by C phases power with No. three loading interfaces power supply mutually by
B phases are powered.
(3), control method further includes itself switching breakdown judge process of combination switch, when combination switch as therefore
Hinder self-test switch in use, since the combination switch itself switching failure includes reverse-blocking tetrode thyristor KbCan not conducting failure, magnetic
Guard relay switchs KcCan not close failure, magnetic latching relay switch KcCan not disconnect failure and reverse-blocking tetrode thyristor Kb
Can not turn off failure；Therefore, judging the process of combination switch itself switching failure includes：
(7-1) judges reverse-blocking tetrode thyristor KbFor can not the process of conducting failure be：
When putting into combination switch, it is assumed that reverse-blocking tetrode thyristor KbIt is off state, and magnetic latching relay switch KcAlso locate
On the premise of off-state,
(7-1-1) is first from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent, controller waits reverse-blocking tetrode thyristor Kb
Operation detecting circuit return start pulse signal, and with the pulse counter of controller carry out triggering trigger pulse count,
When be delayed 0.2s after, if the trigger pulse number that receives of controller is more than 5, you can think reverse-blocking tetrode thyristor KbCan be just
Often conducting, if the trigger pulse number that controller receives is less than setting number,
(7-1-2) is again from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent, and pulse counter is reset, then
After secondary delay 0.2s, if the trigger pulse number that receives of controller is still less than 5, you can judge reverse-blocking tetrode thyristor KbFor
Can not conducting failure；
(7-2) judges that magnetic latching relay switchs KcIt is for the process of failure can not be closed：
When putting into combination switch, it is assumed that reverse-blocking tetrode thyristor KbEnergy normally, and reverse-blocking tetrode thyristor KbIt has been on shape
State and magnetic latching relay switch KcOn the premise of being off,
(7-2-1) first switchs K from controller to magnetic latching relaycSend closure control signal, and by pulse counter
Reset, be delayed after 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than 20 when,
(7-2-2) switchs K from controller to magnetic latching relay againcSend disconnection control signal, and by pulse counter
Reset, then be delayed after the 0.6s times, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than also 20 when,
(7-2-3) switchs K from controller to magnetic latching relay againcSend closure control signal, and by step-by-step counting
Device is reset, and is delayed again after 0.6s, at this time if controller receives reverse-blocking tetrode thyristor KbTrigger pulse count still greater than 20
When a, you can judge that the magnetic latching relay switchs KcFor failure can not be closed；
(7-3) judges that magnetic latching relay switchs KcIt is for the process of failure can not be disconnected：
When cutting off combination switch, it is assumed that reverse-blocking tetrode thyristor KbEnergy normally, and reverse-blocking tetrode thyristor KbIn disconnection shape
State and magnetic latching relay switch KcOn the premise of being in closure state,
(7-3-1) is first from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent by reverse-blocking tetrode thyristor KbConducting, and prolong
When 0.4s after allow reverse-blocking tetrode thyristor KbReliable conducting, and switch K from controller to magnetic latching relaycDisconnection control signal is sent,
And reset pulse counter, after waiting 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be less than 20
When a；
(7-3-2) switchs K from controller to magnetic latching relay againcSend disconnection control signal, and by pulse counter
Reset, after again waiting for 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number still less than 20 when, you can
Judge that magnetic latching relay switchs KcFor failure can not be disconnected；
(7-4) judges reverse-blocking tetrode thyristor KbIt is for the process of failure can not be turned off：
When cutting off combination switch, it is assumed that magnetic latching relay switchs KcCan normally it disconnect, and magnetic latching relay switch Kc
It has been off and reverse-blocking tetrode thyristor KbOn the premise of also in conducting state,
(7-4-1) is first from controller to reverse-blocking tetrode thyristor KbShut-off control signal is sent, and pulse counter is reset, is prolonged
When 0.2s after, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than 5 when；
(7-4-2) is again from controller to reverse-blocking tetrode thyristor KbShut-off control signal is sent, and pulse counter is reset, then
After secondary delay 0.2s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number still greater than 5 when, you can judge controllable
Transwitch KbFor failure can not be turned off.
The present embodiment can make the loading interfaces power supply phase malleable of three-phase four-wire power, and can be according to power factor (PF) on three-phase
Imbalance carries out that loading interfaces power supply is mutually automatic to be exchanged, safe, good reliability, can autonomous detection combination switch from
Body switching failure, moreover it is possible to carry out the switching of combination switch in the correct time point of current zero-crossing point, intelligence degree is high.
Example 2, the difference with example 1 are：
Referring to shown in Fig. 1, Fig. 9 and Figure 10, No.1 loading interfaces 811 are quick connector, and quick connector includes plug
34 and housing 39, it is fixed with insulation tube 31 upwards on the upper surface of housing, is equipped with the outer tube wall of insulation tube and control
The pressure sensor 32 of device connection, be fixed with the housing upper surface that insulation tube surrounds be connected with the inner cavity of housing 38 it is logical
Hole, is fixed with contact pin 37 in through hole, and the lower end of contact pin is located at the interior intracavitary of housing, and the upper end of contact pin is located at insulation tube
It is interior；The both ends of a piece conducting wire 30 are conductively connected on the lower end of contact pin and node J6 respectively；Plug includes insulation intubation 36 and sets
Put the contact tube 35 in insulation intubation；The internal diameter of insulation intubation is matched with the outside diameter of insulation tube, the diameter and contact tube of contact pin
Internal diameter matching；The structure of No. two loading interfaces 822 and the structure of No. three loading interfaces 833 with No.1 loading interfaces 811
Structure is identical.Cone 33 is equipped with the top of contact pin.
Example 3, the difference with example 1 are：
Referring to shown in Fig. 1 and Figure 11, further including the memory 106 being connected respectively with controller, wireless module 504, address
Encoder 507 and server 200.
If intelligent phase electricity output switch has two, the two intelligent phase electricity output switches can be by each
From wireless module the two intelligent phase electricity output switches are subjected to mutual wireless signal connection；
When only one of which loading interfaces connect in three loading interfaces in first intelligent phase electricity output switch
Load is connected to, and only two of which loading interfaces connect in three loading interfaces in second intelligent phase electricity output switch
When being connected to load；
If this loading interfaces of first intelligent phase electricity output switch determine it is to allow the after being powered by A phases
The two loading interfaces of two intelligent phase electricity output switches are powered by B phases respectively powers with C phases.
Example 4, the difference with example 1 are：
Referring to shown in Fig. 1, Figure 11 and Figure 13, combination switch further includes the timer being connected with controller (in the accompanying drawings not
Draw) and the software extinguishing arc module (being not drawn into the accompanying drawings) that is arranged in controller；
Since photoelectrical coupler OPT has certain conduction voltage drop and transmission delay, so controller receives photoelectrical coupler OPT
Current output signal UIOWith delay, when controller determines the current output signal U of photoelectrical coupler OPTIOZero crossing
When, actual current may go to other nonzero values, and the electric current that photoelectrical coupler OPT is determined this generates controller is defeated
Go out signal UIOLag time t during zero crossing1；
Due also to magnetic latching relay switchs KcBlade of knife switch need to overcome relay contacts pressure could blade of knife switch from
Pulled open on relay contacts, this generates magnetic latching relay to switch KcRelay action time delay t2；
Lag time and delay time in view of above objective reality；Since every phase current of three-phase electricity is in three phase power
Corresponding current waveform L can be all formed in factor monitor respectively；
When needing to gather the current waveform L of certain phase in A phases, B phases and C phase this three-phase, controller startup software extinguishing arc mould
Block reads the waveform pass zero point time t for the current waveform L that phase is corresponded in three phase power factor monitor0, and detecting waveform
Zero crossing time t0When opening timing device；
If the cycle of current waveform L is T, if N is positive integer；And set controller and send and close to magnetic latching relay switch Kc
It is t that combined floodgate order when closing control signal, which sends time point, then：
Magnetic latching relay switch times for thoroughly closing a floodgate of Kc can be calculated according to t；Since magnetic latching relay switchs
KcCombined floodgate duration and disconnected lock duration it is equal, so controller to magnetic latching relay switch KcSend when disconnecting control signal
It is also t that disconnected lock order, which sends time point,.
Start the ripple for the current waveform L that phase is corresponded in software extinguishing arc module reading three phase power factor monitor in controller
Shape zero crossing time t0When, since the correct time point of waveform just zero passage is not easy to obtain；Therefore, using current waveform L's
Waveform pass zero point of the average at calculate this after time point twice time point twice as current waveform L is read on zero crossing section waveform
Time t0Value；
If the time point for being located at twi-read on the zero crossing section waveform of current waveform L is respectively t3 and t4, then：
Formula (2), which is substituted into formula (1), then to be had：
This example is coordinated using software, improves reliability and accuracy.
Above in conjunction with the attached drawing embodiment that the invention has been described, however, the implementation is not limited to the above embodiments, this area
Those of ordinary skill can be with various changes and modifications may be made within the scope of the appended claims.
Claims (9)
1. intelligent phase electricity output switch, it is characterised in that including A phase, B phase, C phase, zero curve N, A connection jaws, B connection jaws, C
Connection jaws, No.1 loading interfaces (811), No. two loading interfaces (822), No. three loading interfaces (833), controller (107), node
J1, node J2, node J3, node J4, node J5, node J6, node J7 and node J8；
Further include the three-phase activity coefficient monitor (101) being connected respectively with controller, No.1 phase voltage sample circuit (102),
No.1 Single-Phase Inverter Source (103), No.1 filter (104), No.1 isolating transformer (105), No.1 loading interfaces voltage are adopted
Sample circuit (108), interface power factor monitor (109), No. two phase voltage sample circuits (110), No. two Single-Phase Inverter Sources
(1030), No. two filters (1040), No. two isolating transformers (1050), No. two loading interfaces voltage sampling circuits (1080),
Switch K1, switch K2, switch K3, switch K4, switch K5, switch K6, switch K7, switch K8, switch K9, switch K10, switch
K11, switch K12, switch K13, switch K14, switch K15, switch K16, switch K17, switch K18, switch K19, switch K20 and
Switch K21；
The A is connected on the firewire input terminal of A connection jaws, and B is connected on the firewire input terminal of B connection jaws, and C is connected
On the firewire input terminal of C connection jaws, the zero curve input terminal of the A connection jaws, the zero curve input terminal of the B connection jaws and described
The zero curve input terminal of C connection jaws is connected with zero curve N；
One end of the switch K19, a samplings of a monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, a sampling ends of No. two phase voltage sample circuits, the one end for switching K1, the output terminal of A connection jaws, the one end for switching K9, switch
One end of K13 and one end of switch K15 are connected with node J1 respectively；
One end of the switch K20, the b samplings of the b monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, the b sampling ends of No. two phase voltage sample circuits, the one end for switching K2, the output terminal of B connection jaws, the one end for switching K8, switch
One end of K12 and one end of switch K14 are connected with node J2 respectively；
One end of the switch K21, the c samplings of the c monitoring sides of three-phase activity coefficient monitor, No.1 phase voltage sample circuit
End, the c sampling ends of No. two phase voltage sample circuits, the one end for switching K3, the output terminal of C connection jaws, the one end for switching K7, switch
One end of K10 and one end of switch K11 are connected with node J3 respectively；
The power output end of the No.1 isolating transformer, the sampling end of No.1 loading interfaces voltage sampling circuit, switch K4's
One end of one end, the one end for switching K5 and switch K6 is connected with node J4 respectively；
The power output end of No. two isolating transformers, the sampling end of No. two loading interfaces voltage sampling circuits, switch K16
One end of one end, the one end for switching K17 and switch K18 is connected with node J5 respectively；
The other end of the switch K4, the other end for switching K9, the other end for switching K10, the other end, the interface work(for switching K14
The No.1 monitoring side of rate factor monitor and No.1 loading interfaces are connected with node J6 respectively；
The other end of the switch K5, the other end for switching K8, the other end for switching K11, the other end, the interface work(for switching K15
No. two monitoring sides of rate factor monitor and No. two loading interfaces are connected with node J7 respectively；
The other end of the switch K6, the other end for switching K7, the other end for switching K12, the other end, the interface work(for switching K13
No. three monitoring sides of rate factor monitor and No. three loading interfaces are connected with node J8 respectively；
Electricity of the other end of the other end of the switch K1, the other end for switching K2 and switch K3 with No.1 Single-Phase Inverter Source
Source input terminal connection, the input terminal of the No.1 filter is connected on the power output end of No.1 Single-Phase Inverter Source, described
The output terminal of No.1 filter is connected on the power input of No.1 isolating transformer；
The other end of the switch K19, the other end for switching K20 and switch the other end of K21 with No. two Single-Phase Inverter Sources
Power input connection, the input terminal of No. two filters is connected on the power output end of No. two Single-Phase Inverter Sources,
The output terminal of No. two filters is connected on the power input of No. two isolating transformers；
The switch K1, switch K2, switch K3, switch K7, switch K8, switch K9, switch K10, switch K11, switch K12, open
It is the identical combination switch of circuit structure to close K13, switch K14, switch K15, switch K19, switch K20 and switch K21；
The combination switch includes No.1 node (701), No. two nodes (702), No.1 switch (2011), No. two switches
(2021), No. three switches (2031), No. four switches (2041), No. five switches (2051), No. six switches (2061), node Msa, section
Point Mb, node Mc, node Md, node Me, inductance La, capacitance Ca, capacitance C0, capacitance C2, diode D1, diode D2, diode D3、
Diode D4, photoelectrical coupler OPT, resistance R0, resistance R1, resistance R2, switching switch Ka, Magnetic driving electric power road (502), silicon driving
Circuit (503), from electricity consumption power supply module (901) and ground terminal SGND, the controller (107) include pulse counter
(805)；The switching switch KaIncluding reverse-blocking tetrode thyristor KbK is switched with magnetic latching relayc, the photoelectrical coupler OPT includes
Light emitting diode D5With phototriode Q0；The reverse-blocking tetrode thyristor KbOne end and magnetic latching relay switch KcOne end point
It is not connected with No.1 node, the reverse-blocking tetrode thyristor KbThe other end, No.1 switch one end, No. three switch one end, No. four
One end of switch and inductance LaOne end respectively with node MaConnection, the inductance LaThe other end, capacitance CaOne end, No. two
One end of switch, No. five switch one end and No. six switch one end respectively with node MbConnection, magnetic latching relay switch Kc's
The other end, No.1 switch the other end and No. two switch the other ends respectively with node McConnection, the capacitance C2One end, four
Number switch the other end, diode D1Positive terminal and diode D3Negative pole end respectively with node MdConnection, the diode D2
Positive terminal, diode D4Negative pole end, capacitance C0One end and resistance R2One end respectively with node MeConnection, described No. three
The other end of switch is connected with one end of resistance R1, the other end and the capacitance C of the resistance R12The other end connection, No. five are opened
The other end of pass and capacitance C0Other end connection, the other ends and the resistance R of No. six switches2The other end connection, the capacitance Ca
The other end be connected on No. two nodes, the diode D1Negative pole end and diode D2Negative pole end be connected to it is luminous
Diode D5Positive terminal on, the diode D3Positive terminal and diode D4Positive terminal be connected to light emitting diode
D5Negative pole end on, the phototriode Q0Collector terminal respectively with resistance R0One end connected with controller, it is described photosensitive
Triode Q0Emitter be connected with signal ground end SGND, it is described from electricity consumption power supply module respectively with resistance R0The other end, magnetic
Drive circuit, silicon drive circuit are connected with controller, the silicon drive circuit respectively with reverse-blocking tetrode thyristor KbControl terminal and control
Device connection processed, the Magnetic driving circuit switch K with magnetic latching relay respectivelycControl terminal connected with controller；
The No.1 node (701) can only be conducted with wherein one in A phases, B phases and C phases this three-phases in discontinuity surface when same
Connection；No. two nodes (702) are connected on zero curve N.
2. intelligence phase electricity output switch according to claim 1, it is characterised in that the No.1 loading interfaces
(811) it is quick connector, the quick connector includes plug (34) and housing (39), solid upwards on the upper surface of housing
Surely insulation tube (31) is equipped with, the pressure sensor (32) being connected with controller is equipped with the outer tube wall of insulation tube, in insulation tube
The through hole being connected with the inner cavity of housing (38) is fixed with the housing upper surface of encirclement, contact pin (37) is fixed with through hole,
And the lower end of contact pin is located at the interior intracavitary of housing, the upper end of contact pin is located in insulation tube；The both ends difference of a piece conducting wire (30)
It is conductively connected on the lower end of contact pin and node J6；The plug includes insulation intubation (36) and is arranged on leading in insulation intubation
Fulgurite (35)；The internal diameter of insulation intubation is matched with the outside diameter of insulation tube, and the diameter of contact pin is matched with the internal diameter of contact tube；Described two
The structure of number loading interfaces (822) and the structure of No. three loading interfaces (833) with the No.1 loading interfaces (811)
Structure is identical；Cone (33) is equipped with the top of contact pin.
3. intelligence phase electricity output switch according to claim 1, it is characterised in that further include and connect respectively with controller
Memory (106), wireless module (504), address scrambler (507) and the server (200) connect.
4. the control method of a kind of intelligent phase electricity output switch suitable for described in claim 1, it is characterised in that described
The operating passing zero control process of control method including combination switch, when combination switch as zero crossing fling-cut switch in use,
The operating passing zero control process of the combination switch is as follows：
(4-1) puts into combination switch；
(4-1-1) first detects voltage U in C phases when to put into combination switch to C phasesCNCorrect time point during zero crossing, works as electricity
Press UCNDuring zero crossing, controller is immediately to reverse-blocking tetrode thyristor KbSend conductivity control signal, reverse-blocking tetrode thyristor KbTurn on immediately；
(4-1-2) is as reverse-blocking tetrode thyristor KbAfter turning on setting time, electric current I is first detected1Correct time point during zero crossing, works as electricity
Flow I1During zero crossing, controller switchs K to magnetic latching relay immediatelycSend closure control signal, magnetic latching relay switch Kc
Close immediately；
(4-1-3) and then electric current I is detected again1Correct time point during zero crossing, as electric current I1During zero crossing, controller is immediately
To reverse-blocking tetrode thyristor KbSend shut-off control signal, reverse-blocking tetrode thyristor KbTurn off immediately, K is only switched by magnetic latching relay at this timec
Current supply circuit work is kept, so far completes combination switch devoting oneself to work to C phases；
(4-2) cuts off combination switch；
(4-2-1) first detects electric current I when the combination switch in C phases to be cut off1Correct time point during zero crossing, as electric current I1
During zero crossing, controller is immediately to reverse-blocking tetrode thyristor KbSend conductivity control signal, reverse-blocking tetrode thyristor KbTurn on immediately, delay one
The section time makes reverse-blocking tetrode thyristor KbReliable conducting；
(4-2-2) is in reverse-blocking tetrode thyristor KbIn the case of conducting, electric current I is detected again1Correct time point during zero crossing, works as electricity
Flow I1During zero crossing, controller switchs K to magnetic latching relay immediatelycSend disconnection control signal, magnetic latching relay switch Kc
Then turn off；
(4-2-3) and then electric current I is detected again1Correct time point during zero crossing, as electric current I1During zero crossing, controller is immediately
To reverse-blocking tetrode thyristor KbSend shut-off control signal, reverse-blocking tetrode thyristor KbTurn off immediately；So far combination switch is complete from C phases
Excision.
5. the control method of a kind of intelligent phase electricity output switch suitable for described in claim 1, it is characterised in that described
Control method includes the mutually automatic exchange process of loading interfaces power supply, and mutually automatic exchange process is as follows for the loading interfaces power supply：
(5-1) sets power factor PAC=| | A phase power factors |-| the power factor of C phases | |, power factor PAB=| | A phase power
Factor |-| the power factor of B phases | |, power factor PBC=| | B phase power factors |-| the power factor of C phases | |；
(5-2) three-phase activity coefficient monitor carries out power factor balance respectively in setting time interval to A phases, B phases and C phases
Monitoring, and the monitoring data of every phase are uploaded to controller respectively, what controller immediately uploaded three-phase activity coefficient monitor
Monitoring data carry out calculating processing；
If controller obtains current power factor after carrying out calculating processing to the monitoring data that three-phase activity coefficient monitor uploads
Maximum be mutually A phases, and current power factor minimum is mutually C phases, and power factor P at this timeACMore than setting value P0When, then
It needs to be determined that go out No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces be respectively currently by A phases, B phases and C phases this three
Which in phase is mutually powered to it；
(5-3) controller sends interface monitor instruction to interface power factor monitor immediately, and interface power factor monitor is stood
It is carried out at the same time monitoring to the power factor in No.1 loading interfaces, No. two loading interfaces and No. three loading interfaces, and by No.1
Monitoring data in loading interfaces, No. two loading interfaces and No. three loading interfaces are uploaded to controller respectively, and controller is right immediately
The monitoring data that interface power factor monitor uploads carry out calculating processing；
One can be determined respectively after the monitoring data that controller uploads interface power-factor monitoring device carry out calculating processing
Number loading interfaces, No. two loading interfaces and No. three loading interfaces are currently by which phase in A phases, B phases and C phases this three-phases respectively
It is powered to it；
If determining at this time, the power supply in No.1 loading interfaces is mutually powered by A phases, and the power supply in No. two loading interfaces is mutually supplied by B phases
Electricity, the power supply in No. three loading interfaces are mutually powered by C phases, then switch K7, switch K8 and switch K9 at this time are in closed form
State, switch K1 at this time, switch K2, switch K3, switch K4, switch K5, switch K6, switch K10, switch K11, switch K12, open
Close K13, switch K14, switch K15, switch K16, switch K17 and switch K18 and be in off-state, No.1 phase voltage at this time
The sample trap cutter spacing of sample circuit is on d ends, and the sample trap cutter spacing of No. two phase voltage sample circuits is on d ends；
(5-4) is that the absolute value for making power factor in A phases, B phases and C phases two-by-two after the difference of absolute value is less than setting value P0, then need
Power supply in No.1 loading interfaces is mutually powered into change to be powered by C phases by A phases, the power supply in No. two loading interfaces is mutually still by B
Mutually power, the power supply in No. three loading interfaces mutually powers change to be powered by A phases by C phases；
Power supply in No.1 loading interfaces mutually by A phases is powered change to be powered by C phases and by the confession in No. three loading interfaces by (5-5)
Electric mutually powered by C phases becomes that mutually exchange process is as follows automatically for the loading interfaces power supply powered by A phases：
(5-5-1) first, allows the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to a samplings of No.1 phase voltage sample circuit
It is connected on end with A, the voltage signal of No.1 phase voltage sample circuit collection A phases is simultaneously uploaded to controller；
Then, switch K1 closures are allowed No.1 Single-Phase Inverter Source is connected with A；Under the control of the controller, No.1 is single-phase inverse
Variable power source output voltage signal with the voltage signal of A phases as reference, with No.1 Single-Phase Inverter Source export voltage signal
As feedback signal, No.1 closed-loop control is formed, No.1 drive signal is produced in the controller, makes No.1 Single-Phase Inverter Source defeated
The No.1 voltage waveform gone out exports stable No.1 sine by No.1 isolating transformer again after first passing through the filtering of No.1 filter
Ripple power supply, and make the No.1 sine-wave power that No.1 isolating transformer exports and the same amplitude of A phase voltages under the control of the controller
Same-phase；
Then, be closed at switch K4 and disconnect switch K9, at this time the state of the power supply phase in No.1 loading interfaces still with A phases
On power supply phase state it is identical；
Then, still allow switch K1 to close, allow the sampling plug-in strip of No.1 phase voltage sample circuit to be connected to the sampling of No.1 phase voltage
It is connected on the c sampling ends of circuit with C, the voltage signal of No.1 phase voltage sample circuit collection C phases is simultaneously uploaded to controller；Control
Device processed uses phase shifting control, make No.1 Single-Phase Inverter Source export voltage signal with the voltage signal of C phases as reference, with one
The voltage signal of number Single-Phase Inverter Source output forms new No.1 closed-loop control, produces in the controller as feedback signal
The No.1 drive signal of SPWM, after making the No.1 voltage waveform that No.1 Single-Phase Inverter Source exports first pass through the filtering of No.1 filter
Again by the stable No.1 sine-wave power of No.1 isolating transformer output, and No.1 is set to isolate transformation under the control of the controller
State of the No.1 sine-wave power of device output with C phase voltages with amplitude same-phase, at this time the power supply phase in No.1 loading interfaces
It is identical with the state of the power supply phase in C phases；
(5-5-2) similarly, allows the sampling plug-in strip of No. two phase voltage sample circuits to be connected to the c samplings of No. two phase voltage sample circuits
It is connected on end with C, the voltage signal of No. two phase voltage sample circuit collection C phases is simultaneously uploaded to controller；
Then, switch K21 closures are allowed No. two Single-Phase Inverter Sources is connected with C；Under the control of the controller, No. two it is single-phase inverse
The voltage signal of variable power source output with the voltage signal of C phases as reference, with the voltage signal of No. two Single-Phase Inverter Sources output
As feedback signal, No. two closed-loop controls are formed, No. two drive signals is produced in the controller, makes No. two Single-Phase Inverter Sources defeated
No. two voltage waveforms gone out export No. two stable sines by No. two isolating transformers again after first passing through No. two filter filterings
Ripple power supply, and make No. two sine-wave powers and the same amplitude of C phase voltages of No. two isolating transformer output under the control of the controller
Same-phase；
Then, be closed at switch K18 and disconnect switch K7, at this time the state of the power supply phase in No. three loading interfaces also with C phases
On power supply phase state it is identical；
Then, still allow switch K21 to close, allow the sampling plug-in strip of No. two phase voltage sample circuits to be connected to No. two phase voltages samplings
It is connected on a sampling ends of circuit with A, the voltage signal of No. two phase voltage sample circuit collection A phases is simultaneously uploaded to controller；Control
Device processed uses phase shifting control, make the voltage signal of No. two Single-Phase Inverter Sources output with the voltage signal of A phases as reference, with two
The voltage signal of number Single-Phase Inverter Source output forms No. two new closed-loop controls, produces in the controller as feedback signal
No. two drive signals of SPWM, after making No. two voltage waveforms of No. two Single-Phase Inverter Source outputs first pass through No. two filter filterings
Again by No. two stable sine-wave powers of No. two isolating transformer output, and make No. two isolation transformations under the control of the controller
State of No. two sine-wave powers of device output with A phase voltages with amplitude same-phase, at this time the power supply phase in No. three loading interfaces
It is identical with the state of the power supply phase in A phases；
(5-5-3) then, is closed at switch K10, disconnects switch K4, closure switch K13 and disconnects switch K18, at this time No.1
Power supply in loading interfaces is mutually powered by C phases completely, and the power supply in No. three loading interfaces is mutually powered by A phases completely；
(5-5-4) finally, the sample trap knife of No.1 phase voltage sample circuit is turned on d ends, by No. two phase voltage sampling electricity
The sample trap knife on road is turned on d ends, is disconnected switch K1 and is disconnected switch K21, so that No.1 phase voltage sample circuit, No.1
Single-Phase Inverter Source, No.1 filter, No.1 isolating transformer, No. two phase voltage sample circuits, No. two Single-Phase Inverter Sources, two
Number filter and No. two isolating transformers exit the operation that loading interfaces power supply mutually exchanges automatically；
(5-5-5) so far, by the power supply in No.1 loading interfaces mutually powers change to be powered by C phases and being connect No. three loads by A phases
Power supply on mouth is mutually powered to become by C phases to be terminated into the automatic exchange process of loading interfaces power supply phase powered by A phases；
(5-5-6) similarly, by the power supply phase in No.1 loading interfaces, the power supply phase in No. two loading interfaces and No. three loading interfaces
On power supply mutually the principle that is exchanged two-by-two with the power supply in No.1 loading interfaces is mutually powered by A phases become to be powered by C phases and
By in No. three loading interfaces power supply mutually by C phases power change into the principle powered by A phases it is identical.
6. the control method of a kind of intelligent phase electricity output switch suitable for described in claim 3, it is characterised in that if intelligence
When energy phase electricity output switch has two, then the two intelligent phase electricity output switches can pass through respective wireless module
The two intelligent phase electricity output switches are subjected to mutual wireless signal connection；
When only one of which loading interfaces are connected with three loading interfaces in first intelligent phase electricity output switch
Load, and only two of which loading interfaces are connected with three loading interfaces in second intelligent phase electricity output switch
During load；
If this loading interfaces of first intelligent phase electricity output switch determine it is to allow second after being powered by A phases
The two loading interfaces of intelligent phase electricity output switch are powered by B phases respectively powers with C phases.
7. the control method of a kind of intelligent phase electricity output switch suitable for described in claim 1, it is characterised in that described
Control method includes itself switching breakdown judge process of combination switch, is used when combination switch is switched as fault self-checking
When, since the combination switch itself switching failure includes reverse-blocking tetrode thyristor KbCan not conducting failure, magnetic latching relay switch Kc
Can not close failure, magnetic latching relay switch KcCan not disconnect failure and reverse-blocking tetrode thyristor KbCan not turn off failure；Cause
This, judging the process of combination switch itself switching failure includes：
(7-1) judges reverse-blocking tetrode thyristor KbFor can not the process of conducting failure be：
When putting into combination switch, it is assumed that reverse-blocking tetrode thyristor KbIt is off state, and magnetic latching relay switch KcIt is also at disconnected
On the premise of open state,
(7-1-1) is first from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent, controller waits reverse-blocking tetrode thyristor KbFortune
The start pulse signal that row detection circuit returns, and carry out triggering trigger pulse with the pulse counter of controller and count, when prolonging
When 0.2s after, if the trigger pulse number that receives of controller is more than 5, you can think reverse-blocking tetrode thyristor KbCan normally it lead
It is logical, if the trigger pulse number that controller receives is less than setting number,
(7-1-2) is again from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent, and pulse counter is reset, is prolonged again
When 0.2s after, if the trigger pulse number that receives of controller is still less than 5, you can judge reverse-blocking tetrode thyristor KbFor can not
Conducting failure；
(7-2) judges that magnetic latching relay switchs KcIt is for the process of failure can not be closed：
When putting into combination switch, it is assumed that reverse-blocking tetrode thyristor KbEnergy normally, and reverse-blocking tetrode thyristor KbIt is in the conduction state and
Magnetic latching relay switchs KcOn the premise of being off,
(7-2-1) first switchs K from controller to magnetic latching relaycClosure control signal is sent, and pulse counter is reset,
It is delayed after 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than 20 when,
(7-2-2) switchs K from controller to magnetic latching relay againcDisconnection control signal is sent, and pulse counter is reset,
It is delayed again after the 0.6s times, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than also 20 when,
(7-2-3) switchs K from controller to magnetic latching relay againcClosure control signal is sent, and pulse counter is clear
Zero, it is delayed again after 0.6s, at this time if controller receives reverse-blocking tetrode thyristor KbTrigger pulse count still greater than 20 when,
It can determine whether that the magnetic latching relay switchs KcFor failure can not be closed；
(7-3) judges that magnetic latching relay switchs KcIt is for the process of failure can not be disconnected：
When cutting off combination switch, it is assumed that reverse-blocking tetrode thyristor KbEnergy normally, and reverse-blocking tetrode thyristor KbBe off and
Magnetic latching relay switchs KcOn the premise of being in closure state,
(7-3-1) is first from controller to reverse-blocking tetrode thyristor KbConductivity control signal is sent by reverse-blocking tetrode thyristor KbConducting, and be delayed
Allow reverse-blocking tetrode thyristor K after 0.4sbReliable conducting, and switch K from controller to magnetic latching relaycDisconnection control signal is sent, and
Pulse counter is reset, after waiting 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be less than 20
When；
(7-3-2) switchs K from controller to magnetic latching relay againcDisconnection control signal is sent, and pulse counter is reset,
After again waiting for 0.6s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number still less than 20 when, you can judge
Magnetic latching relay switchs KcFor failure can not be disconnected；
(7-4) judges reverse-blocking tetrode thyristor KbIt is for the process of failure can not be turned off：
When cutting off combination switch, it is assumed that magnetic latching relay switchs KcCan normally it disconnect, and magnetic latching relay switch KcLocate
In off-state and reverse-blocking tetrode thyristor KbOn the premise of also in conducting state,
(7-4-1) is first from controller to reverse-blocking tetrode thyristor KbShut-off control signal is sent, and pulse counter is reset, is delayed
After 0.2s, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number be more than 5 when；
(7-4-2) is again from controller to reverse-blocking tetrode thyristor KbShut-off control signal is sent, and pulse counter is reset, is prolonged again
When 0.2s after, if controller receives reverse-blocking tetrode thyristor KbTrigger pulse number still greater than 5 when, you can judge silicon-controlled open
Close KbFor failure can not be turned off.
8. the control method of a kind of intelligent phase electricity output switch suitable for described in claim 1, it is characterised in that described
The software extinguishing arc module that combination switch further includes the timer being connected with controller and is arranged in controller；
Since photoelectrical coupler OPT has certain conduction voltage drop and transmission delay, so controller receives the electricity of photoelectrical coupler OPT
Flow output signal UIOWith delay, when controller determines the current output signal U of photoelectrical coupler OPTIOIt is real during zero crossing
Border electric current may go to other nonzero values, and the electric current that photoelectrical coupler OPT is determined this generates controller exports letter
Number UIOLag time t during zero crossing1；
Due also to magnetic latching relay switchs KcBlade of knife switch need to overcome the pressure of relay contacts blade of knife switch could to be touched from relay
Pulled open on point, this generates magnetic latching relay to switch KcRelay action time delay t2；
Lag time and delay time in view of above objective reality；Since every phase current of three-phase electricity is in three phase power factor
Corresponding current waveform L can be all formed in monitor respectively；
When needing to gather the current waveform L of certain phase in A phases, B phases and C phase this three-phase, controller starts the reading of software extinguishing arc module
Take the waveform pass zero point time t for the current waveform L that phase is corresponded in three phase power factor monitor0, and detecting the waveform
Zero crossing time t0When opening timing device；
If the cycle of current waveform L is T, if N is positive integer；And set controller and send closure control to magnetic latching relay switch Kc
It is t that combined floodgate order during signal processed, which sends time point, then
<mrow>
<mi>t</mi>
<mo>=</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>t</mi>
<mn>0</mn>
</msub>
<mo>-</mo>
<msub>
<mi>t</mi>
<mn>1</mn>
</msub>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>t</mi>
<mn>2</mn>
</msub>
<mo>-</mo>
<msub>
<mi>t</mi>
<mn>0</mn>
</msub>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mfrac>
<mrow>
<mi>N</mi>
<mi>T</mi>
</mrow>
<mn>2</mn>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
</mrow>
Magnetic latching relay switch times for thoroughly closing a floodgate of Kc can be calculated according to t；Since magnetic latching relay switchs KcConjunction
Lock duration and disconnected lock duration are equal, so controller switchs K to magnetic latching relaycSend disconnected lock life when disconnecting control signal
It is also t that order, which sends time point,.
9. the control method of a kind of intelligent phase electricity output switch suitable for described in claim 8, it is characterised in that controlling
The software extinguishing arc module that device processed starts reads the waveform pass zero point time for the current waveform L that phase is corresponded in three phase power factor monitor
t0When, since the correct time point of waveform just zero passage is not easy to obtain；Therefore, using the zero crossing section waveform in current waveform L
Waveform pass zero point time t of the upper average for reading calculate this after time point twice time point twice as current waveform L0Value；
If the time point for being located at twi-read on the zero crossing section waveform of current waveform L is respectively t3 and t4, then
<mrow>
<msub>
<mi>t</mi>
<mn>0</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>t</mi>
<mn>3</mn>
</msub>
<mo>+</mo>
<msub>
<mi>t</mi>
<mn>4</mn>
</msub>
</mrow>
<mn>2</mn>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
</mrow>
Formula (2), which is substituted into formula (1), then to be had
<mrow>
<mi>t</mi>
<mo>=</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>t</mi>
<mn>3</mn>
</msub>
<mo>+</mo>
<msub>
<mi>t</mi>
<mn>4</mn>
</msub>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>t</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>t</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mfrac>
<mrow>
<mi>N</mi>
<mi>T</mi>
</mrow>
<mn>2</mn>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
<mo>.</mo>
</mrow>
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| CN110460046A (en) * | 2019-08-12 | 2019-11-15 | 中船电子科技(三亚)有限公司 | A kind of intelligent power distribution management system and method applied to naval vessel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951249A (en) * | 2010-09-29 | 2011-01-19 | 广州市金矢电子有限公司 | Composite contactor |
| CN102611126A (en) * | 2012-03-13 | 2012-07-25 | 中国计量学院 | Switching method for flexible switching system based on single-phase inverter power source |
| DE102012100673A1 (en) * | 2012-01-27 | 2013-08-01 | Changetec Gmbh | Device for supplying electrical energy from e.g. photovoltaic current generating device to low voltage-mains supply, has switching units connected to coupling units to switch coupling units between phases based on power difference quantity |
| CN103915852A (en) * | 2014-04-08 | 2014-07-09 | 中国计量学院 | Flexible switching system based on single-phase grid-connected inverter and switching method thereof |
-
2016
- 2016-10-24 CN CN201610922612.5A patent/CN107979105B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951249A (en) * | 2010-09-29 | 2011-01-19 | 广州市金矢电子有限公司 | Composite contactor |
| DE102012100673A1 (en) * | 2012-01-27 | 2013-08-01 | Changetec Gmbh | Device for supplying electrical energy from e.g. photovoltaic current generating device to low voltage-mains supply, has switching units connected to coupling units to switch coupling units between phases based on power difference quantity |
| CN102611126A (en) * | 2012-03-13 | 2012-07-25 | 中国计量学院 | Switching method for flexible switching system based on single-phase inverter power source |
| CN103915852A (en) * | 2014-04-08 | 2014-07-09 | 中国计量学院 | Flexible switching system based on single-phase grid-connected inverter and switching method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460046A (en) * | 2019-08-12 | 2019-11-15 | 中船电子科技(三亚)有限公司 | A kind of intelligent power distribution management system and method applied to naval vessel |
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