CN107147113A - A kind of phase change method and device without phase fault - Google Patents
A kind of phase change method and device without phase fault Download PDFInfo
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Abstract
The invention discloses a kind of phase change method and device without phase fault, detected by the current signal to current transformer in load side electrical circuitry, so that it is determined that the time point of current signal zero passage.Using the time point of current signal zero passage as current phase breakpoint, it is ensured that after circuit disjunction, larger electric current will not be produced in breakpoint.Employ being used in series for single-pole double-throw relay and single-pole single-throw(SPST relay, it is ensured that short circuit phenomenon is not had in commutation process, the safety of load-side device is protected.After circuit disjunction, by being detected to current phase voltage, so that it is determined that at the voltage of the target phase time point equal with current phase voltage, just ensure that closing electric immediate current in target circuitry phase goes to zero by the closing time point that the time point is defined as target phase.The present invention can reduce electric energy loss, solve the problems, such as low-voltage, solve the problems, such as distribution transformer one-phase overload, solve the problems, such as due to the phase fault that commutation is caused.
Description
Technical field
The present invention relates to low-voltage distribution and field of energy-saving technology, and in particular to a kind of phase change method and dress without phase fault
Put.
Background technology
In current low-voltage circuit, A phase, B phase, C phase three-phase phase line and zero line are generally comprised, if the load of three-phase circuit
It is uneven, then the electric energy loss of distribution transformer and low-voltage circuit can be caused to increase, low-voltage problem, even may be triggered
Burn the single-phase winding of transformer.
Currently, the method that three-phase load unbalance is automatically adjusted has the alternate flying capcitor method of mains side, dynamic reactive to mend
Compensation method, load-side load transfer method etc..
The principle of alternate flying capcitor method is by the flying capcitor device on low-voltage bus bar, from heavier opposite of load
The lighter phase shunt current of load, makes distribution low-voltage export three-phase current in a basic balance.The advantage of this method is adjusting means
It is fairly simple, install more convenient, have the disadvantage that the imbalance of distribution transformer three-phase current can only be adjusted, it is impossible to adjust low-voltage line
The three-phase current unbalance on road.
Dynamic reactive rate compensation method is the new method researched and developed in recent years, its principle and alternate flying capcitor method phase
Seemingly, its advantage is both to adjust current imbalance, also adjusts Voltage unbalance, multiple functional, and regulation is fine, fast response time, but
This method can not adjust the three-phase current unbalance of low-voltage circuit, and device power dissipation ratio itself is higher, and cost is higher.
The principle of load-side load transfer method is whole using several automatic commutations for being installed on single-phase user's branched line
End, by User Part load from load it is heavier be mutually automatically transferred to the lighter phase of load, so as to realize distribution transformer
Outlet and circuit three-phase current are in a basic balance, and this method can reduce the electric energy loss of transformer, and the electric energy of circuit can be reduced again
Loss, and cost is than relatively low.
Conventional load-side load transfer method is using three relays method in parallel, i.e., in ABC three-phase electricities at present
Lu Zhong, each circuitry phase one relay of correspondence, when needing to carry out Phase-switching, first disconnect be currently connected after
Electrical equipment, then closes the relay being connected with target.The problem of this method, is, when disjunction relay, sometimes for
Voltage is also maintained on coil；The load excessive connect of getting an electric shock or the inductive load connect, cause contact instant melting to stick together；It is miscellaneous
Moving contact the reason such as is blocked by matter, is caused relay not have and is really broken out, and now goes to close the relay of target phase, just
It can cause current mutually mutually short-circuit with target.
The content of the invention
It is an object of the invention to provide a kind of phase change method without phase fault, by adjust automatically distribution transformer and
The three-phase load unbalance of low-voltage circuit, reduces electric energy loss, solves the problems, such as low-voltage, solve the single-phase mistake of distribution transformer
Load problem, is solved the problems, such as due to the phase fault that commutation is caused.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of phase change method without phase fault, it is described to change
Phase method is applied in alternating current circuit, and the alternating current circuit includes power supply lateral circuit, on-off circuit and the load-side being sequentially connected
Circuit, the phase change method comprises the following steps：
Step one：Receive the commutation instruction that target circuitry phase is switched to from current circuitry phase；
Step 2：The current signal of the current circuitry phase in the power supply lateral circuit is detected, when detecting the electricity
When flowing signal zero passage, first by on-off circuit and load side electrical circuitry described in single-pole single-throw(SPST relay disjunction, then by described
Single-pole double-throw relay in current circuitry phase is from current Phase-switching to the corresponding phase of target circuitry phase；
Step 3：After single-pole double-throw relay Phase-switching in the current circuitry phase is completed, detect described negative
Carry the voltage signal of the induced electromotive force produced in lateral circuit；
Step 4：The voltage signal inputted when the voltage signal for detecting the induced electromotive force with the target circuitry phase
When equal, single-pole single-throw(SPST relay in the on-off circuit is closed.
When the current signal mistake of detection in a kind of phase change method without phase fault as described above, the step 2
When zero, determine that step is specifically included by the time point of single-pole single-throw(SPST relay section breaker circuit and load side electrical circuitry：
The current signal of detection is recorded in the first corresponding first time point of default zero crossing；
Calculate the very first time interval between the first default zero crossing of the current signal and the second default zero crossing；
The timing since the first time point, when timing duration reaches the very first time interval, passes through hilted broadsword list
Throw on-off circuit and load side electrical circuitry described in relay disjunction.
Further, the on-off circuit carries out possessing disjunction/make delay during breaking operation, from the first time point
Start timing, when timing duration reaches the first preset duration, start the list being connected in the on-off circuit with load side electrical circuitry
The breaking operation of single-pole single-throw relay, first preset duration is determined according to the following equation：
Tf1=Td1-Tr
Wherein, Tf1 represents first preset duration, and Td1 represents the very first time interval, Tr represent the disjunction/
Make delay.
Specifically included in a kind of phase change method without phase fault as described above, described step four：
Determine time point when the current circuitry phase voltage signal is equal to the voltage signal of target circuitry phase input
With the second time interval between predeterminated voltage zero-crossing timing point in the voltage signal of the current circuitry phase；
The timing since the predeterminated voltage zero-crossing timing point, when timing duration reaches second time interval of determination
When, the on-off circuit is closed by single-pole single-throw(SPST relay and connected with load side electrical circuitry.
Second time interval refers to that current circuitry phase voltage signal is equal to the voltage signal time point that target circuitry phase is inputted
With the difference between predeterminated voltage zero-crossing timing point in the voltage signal of current circuitry phase, therefore from predeterminated voltage zero-crossing timing point
Start timing, the voltage signal and mesh of induced electromotive force are also implied that when timing duration reaches the second time interval of determination
The voltage signal for marking circuitry phase input is equal.
Further, the on-off circuit carries out possessing disjunction/make delay during closed procedure；Correspondingly, methods described
Also include in step 4：
The timing since the predeterminated voltage zero-crossing timing point, when timing duration reaches the second preset duration, starts institute
The closed procedure of target circuitry phase is stated, second preset duration is determined according to the following equation：
Tf2=Td2-Tr
Wherein, Tf2 represents second preset duration, and Td2 represents second time interval, Tr represent the disjunction/
Make delay.
The present invention also provides a kind of commutation device without phase fault, including alternating current circuit, and the alternating current circuit includes electricity
Source circuit, on-off circuit and load side electrical circuitry, the power supply lateral circuit include A circuitry phases, B circuitry phases, C circuitry phases, described
A circuitry phases, B circuitry phases, C circuitry phases respectively connection one voltage transformer, the on-off circuit include one with A circuitry phases, B
First single-pole double-throw relay of circuitry phase connection, it is double that first single-pole double-throw relay, C circuitry phases are connected with the second hilted broadsword
Relay is thrown, single-pole single-throw(SPST relay is connected between second single-pole double-throw relay and load side electrical circuitry；Described is negative
Carry lateral circuit and be connected with a voltage transformer and a current transformer.
The inventive method has the following advantages that：Alternate load transfer can be quickly realized in commutation operating process, it is to avoid
User has a power failure；Disjunction and closure immediate current can be made to go to zero or equal to zero in commutation operation, it is to avoid produce larger rush
Electric current is hit, alternate load smooth transfer is realized, reduces the impact to commutation device body and electrical equipment；Can be in commutation process
In avoid phase fault, it is to avoid the damage of user equipment and circuit.
Brief description of the drawings
Phase change method flow charts of the Fig. 1 without phase fault；
Commutation device circuit structure diagrams of the Fig. 2 without phase fault.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
As shown in figure 1, a kind of phase change method without phase fault, phase change method is applied in alternating current circuit, alternating current circuit
Including power supply lateral circuit, on-off circuit and the load side electrical circuitry being sequentially connected, phase change method comprises the following steps：
S1：Receive the commutation instruction that target circuitry phase is switched to from current circuitry phase；
S2：The current signal of the current circuitry phase in power supply lateral circuit is detected, when detecting current signal zero passage, first
By single-pole single-throw(SPST relay section breaker circuit and load side electrical circuitry, then pass through the single-pole double throw relay in current circuitry phase
Device is from current Phase-switching to the corresponding phase of target circuitry phase；
S3：After single-pole double-throw relay Phase-switching in current circuitry phase is completed, produced in detection load side electrical circuitry
The voltage signal of raw induced electromotive force；
S4：When the voltage signal for detecting induced electromotive force is equal with the voltage signal that target circuitry phase is inputted, closure
Single-pole single-throw(SPST relay in on-off circuit.
In S2 when the current signal zero passage of detection, pass through single-pole single-throw(SPST relay section breaker circuit and load-side
The time point of circuit determines that step is specifically included：
The current signal of detection is recorded in the first corresponding first time point of default zero crossing；
Very first time interval between the default zero crossing of the first of calculated current signal and the second default zero crossing；
The timing since first time point, when timing duration reaches very first time interval, passes through single-pole single-throw(SPST relay
Section breaker circuit and load side electrical circuitry.
Further, on-off circuit carries out possessing disjunction/make delay during breaking operation, is counted since first time point
When, when timing duration reaches the first preset duration, the single-pole single-throw(SPST relay being connected in starting switch circuit with load side electrical circuitry
The breaking operation of device, the first preset duration is determined according to the following equation：
Tf1=Td1-Tr
Wherein, Tf1 represents the first preset duration, and Td1 represents very first time interval, and Tr represents disjunction/make delay.
Specifically included in S4：
It is determined that time point and current phase when current circuitry phase voltage signal is equal to the voltage signal that target circuitry phase is inputted
The second time interval in the voltage signal of circuit between predeterminated voltage zero-crossing timing point；
The timing since predeterminated voltage zero-crossing timing point, when timing duration reaches the second time interval of determination, passes through
Single-pole single-throw(SPST relay closure switch circuit is connected with load side electrical circuitry.
Further, on-off circuit carries out possessing disjunction/make delay during closed procedure；Correspondingly, also wrapped in method S4
Include：
The timing since predeterminated voltage zero-crossing timing point, when timing duration reaches the second preset duration, starts target phase
The closed procedure of circuit, the second preset duration is determined according to the following equation：
Tf2=Td2-Tr
Wherein, Tf2 represents the second preset duration, and Td2 represents the second time interval, and Tr represents disjunction/make delay.
As shown in Fig. 2 the present invention also provides a kind of commutation device without phase fault, including alternating current circuit, alternating current circuit
Including power supply lateral circuit, on-off circuit and load side electrical circuitry, power supply lateral circuit includes A circuitry phases, B circuitry phases, C circuitry phases, A phases
Circuit, B circuitry phases, C circuitry phases include input terminal, and A circuitry phases, B circuitry phases, C circuitry phases respectively connect a mutual induction of voltage
Device, on-off circuit includes first single-pole double-throw relay 1 that is connected with A circuitry phases, B circuitry phases, the first single-pole double throw after
Electrical equipment 1, C circuitry phases are connected with the second single-pole double-throw relay 2, connect between the second single-pole double-throw relay 2 and load side electrical circuitry
It is connected to single-pole single-throw(SPST relay 3；Load side electrical circuitry is connected with a voltage transformer and a current transformer.
Using the inventive method, the process that realization changes to B phases from A phases is as follows：
When receiving the commutation instruction that B phases are changed to from A phases, the electric current of the current circuitry phase in power supply lateral circuit is believed
Number, when the current signal zero passage of detection, first the disjunction of single-pole single-throw(SPST relay 3 being connected with load side electrical circuitry is opened, then will
First single-pole double-throw relay 1 is from current A Phase-switchings to B-phase.It is right after the action of first single-pole double-throw relay 1 is completed
The voltage signal of the induced electromotive force produced in load side electrical circuitry is detected；When detecting voltage signal and target circuitry phase is defeated
When the voltage signal entered is equal, single-pole single-throw(SPST relay 3 in closure switch circuit.So far, complete from A phases and change to cutting for B phases
Change.
The operating process for changing to A phases from B phases using the present invention is similar with the above-mentioned process for changing to B phases from A phases, realizes from B
The process for mutually changing to A phases is as follows：
When receiving the commutation instruction that A phases are changed to from B phases, the electric current of the current circuitry phase in power supply lateral circuit is believed
Number, when the current signal zero passage of detection, first the disjunction of single-pole single-throw(SPST relay 3 being connected with load side electrical circuitry is opened, then will
First single-pole double-throw relay 1 is switched to A phases from current B-phase.It is right after the action of first single-pole double-throw relay 1 is completed
The voltage signal of the induced electromotive force produced in load side electrical circuitry is detected；When detecting voltage signal and target circuitry phase is defeated
When the voltage signal entered is equal, single-pole single-throw(SPST relay 3 in closure switch circuit.So far, complete from B phases and change to cutting for A phases
Change.
Using the inventive method, the process that realization changes to C phases from A phases is as follows：
When receiving the commutation instruction that C phases are changed to from A phases, the electric current of the current circuitry phase in power supply lateral circuit is believed
Number, when the current signal zero passage of detection, first the disjunction of single-pole single-throw(SPST relay 3 being connected with load side electrical circuitry is opened, then will
Second single-pole double-throw relay 2 is from current A Phase-switchings to C phases.It is right after the action of second single-pole double-throw relay 2 is completed
The voltage signal of the induced electromotive force produced in load side electrical circuitry is detected；When detecting voltage signal and target circuitry phase is defeated
When the voltage signal entered is equal, single-pole single-throw(SPST relay 3 in closure switch circuit.So far, complete from A phases and change to cutting for C phases
Change.
The operating process for changing to C phases from B phases using the present invention is similar with the above-mentioned process for changing to C phases from A phases, realizes from B
The process for mutually changing to C phases is as follows：
When receiving the commutation instruction that C phases are changed to from B phases, the electric current of the current circuitry phase in power supply lateral circuit is believed
Number, when the current signal zero passage of detection, first the disjunction of single-pole single-throw(SPST relay 3 being connected with load side electrical circuitry is opened, then will
Second single-pole double-throw relay 2 is switched to C phases from current B-phase.It is right after the action of second single-pole double-throw relay 2 is completed
The voltage signal of the induced electromotive force produced in load side electrical circuitry is detected；When detecting voltage signal and target circuitry phase is defeated
When the voltage signal entered is equal, single-pole single-throw(SPST relay 3 in closure switch circuit.So far, complete from B phases and change to cutting for C phases
Change.
Using the present invention, the process that realization changes to A phases from C phases is as follows：
When receiving the commutation instruction that A phases are changed to from C phases, now in two kinds of situation, the first situation is the first hilted broadsword
Double-throw relay 1 closes at A phases, and second of situation is that the first single-pole double-throw relay 1 closes at B phases.For the first situation,
Current signal is detected, when the current signal zero passage of detection, first by the single-pole single-throw(SPST relay being connected with load-side
The disjunction of device 3 is opened, and then the second single-pole double-throw relay 2 is switched to the contact being connected with the first single-pole double-throw relay 1.Now
Second single-pole double-throw relay 2 is just in the state of UNICOM with the first single-pole double-throw relay 1.Second single-pole double-throw relay 2
After action is completed, the voltage signal of the induced electromotive force to being produced in the load side electrical circuitry is detected；When detecting
When to state voltage signal equal with the voltage signal that the target circuitry phase is inputted, single-pole single-throw(SPST relay in the on-off circuit is closed
Device 3.So far, the switching that A phases are changed to from C phases is completed.For second of situation, current signal is detected, when detection
During the current signal zero passage, first the disjunction of single-pole single-throw(SPST relay 3 being connected with load-side is opened, then by the second single-pole double throw
Relay 2 is switched to the contact being connected with the first single-pole double-throw relay 1, while the first single-pole double-throw relay 1 is tangent from B
Change to A phases.After single-pole double-throw relay action is completed, the voltage of the induced electromotive force to being produced in the load side electrical circuitry is believed
Number detected；When the voltage signal for detecting the voltage signal with the target circuitry phase is inputted is equal, closure is described
Single-pole single-throw(SPST relay 3 in on-off circuit.So far, the switching that A phases are changed to from C phases is completed.
Using the present invention, the operating process for changing to B phases from C phases is similar with the above-mentioned process for changing to A phases from C phases, realizes from C
The process for mutually changing to B phases is as follows：
When receiving the commutation instruction that B phases are changed to from C phases, now in two kinds of situation, the first situation is the first hilted broadsword
Double-throw relay 1 closes at B phases, and second of situation is that the first single-pole double-throw relay 1 closes at A phases.For the first situation,
Current signal is detected, when the current signal zero passage of detection, first by the single-pole single-throw(SPST relay being connected with load-side
The disjunction of device 3 is opened, and then the second single-pole double-throw relay 2 is switched to the contact being connected with the first single-pole double-throw relay 1.Now
Second single-pole double-throw relay 2 is just in the state of UNICOM with the first single-pole double-throw relay 1.Second single-pole double-throw relay 2
After action is completed, the voltage signal of the induced electromotive force to being produced in the load side electrical circuitry is detected；When detecting
When to state voltage signal equal with the voltage signal that the target circuitry phase is inputted, single-pole single-throw(SPST relay in the on-off circuit is closed
Device 3.So far, the switching that B phases are changed to from C phases is completed.For second of situation, current signal is detected, when detection
During the current signal zero passage, first the disjunction of single-pole single-throw(SPST relay 3 being connected with load-side is opened, then by the second single-pole double throw
Relay 2 is switched to the contact being connected with the first single-pole double-throw relay 1, while the first single-pole double-throw relay 1 is tangent from A
Change to B phases.After single-pole double-throw relay action is completed, the voltage of the induced electromotive force to being produced in the load side electrical circuitry is believed
Number detected；When the voltage signal for detecting the voltage signal with the target circuitry phase is inputted is equal, closure is described
Single-pole single-throw(SPST relay 3 in on-off circuit.So far, the switching that B phases are changed to from C phases is completed.
The present invention is detected by the current signal to current transformer in load side electrical circuitry, so that it is determined that current signal
The time point of zero passage.Using the time point of current signal zero passage as current phase breakpoint, it is ensured that, will not after circuit disjunction
Larger electric current is produced in breakpoint.Meanwhile, being used in series for single-pole double-throw relay and single-pole single-throw(SPST relay is employed, really
Protect and short circuit phenomenon is not had in commutation process, protected the safety of load-side device.In addition, after circuit disjunction,
By being detected to current phase voltage, so that it is determined that the voltage of the target phase time point equal with current phase voltage, during by this
Between point be defined as the closing time point of target phase and just ensure that closing electric immediate current in target circuitry phase goes to zero.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (6)
1. a kind of phase change method without phase fault, the phase change method is applied in alternating current circuit, the alternating current circuit includes
Power supply lateral circuit, on-off circuit and the load side electrical circuitry being sequentially connected, it is characterised in that：The phase change method includes following step
Suddenly：
Step one：Receive the commutation instruction that target circuitry phase is switched to from current circuitry phase；
Step 2：The current signal of the current circuitry phase in the power supply lateral circuit is detected, is believed when detecting the electric current
During number zero passage, first by on-off circuit and load side electrical circuitry described in single-pole single-throw(SPST relay disjunction, then by described current
Single-pole double-throw relay in circuitry phase is from current Phase-switching to the corresponding phase of target circuitry phase；
Step 3：After single-pole double-throw relay Phase-switching in the current circuitry phase is completed, the load-side is detected
The voltage signal of the induced electromotive force produced in circuit；
Step 4：When the voltage signal for detecting the induced electromotive force is equal with the voltage signal that the target circuitry phase is inputted
When, close single-pole single-throw(SPST relay in the on-off circuit.
2. a kind of phase change method without phase fault according to claim 1, it is characterised in that：Work as inspection in the step 2
During the current signal zero passage surveyed, determined by the time point of single-pole single-throw(SPST relay section breaker circuit and load side electrical circuitry
Step is specifically included：
The current signal of detection is recorded in the first corresponding first time point of default zero crossing；
Calculate the very first time interval between the first default zero crossing of the current signal and the second default zero crossing；
The timing since the first time point, when timing duration reaches the very first time interval, by single-pole single-throw(SPST after
On-off circuit and load side electrical circuitry described in electrical equipment disjunction.
3. a kind of phase change method without phase fault according to claim 2, it is characterised in that：The on-off circuit is carried out
Possess disjunction/make delay during breaking operation, the timing since the first time point, when timing duration reach first it is default when
When long, start the breaking operation for the single-pole single-throw(SPST relay being connected in the on-off circuit with load side electrical circuitry, described first is pre-
If duration is determined according to the following equation：
Tf1=Td1-Tr
Wherein, Tf1 represents first preset duration, and Td1 represents the very first time interval, and Tr represents the disjunction/closure
Delay.
4. a kind of phase change method without phase fault according to claim 1, it is characterised in that：Have in described step four
Body includes：
Time point and institute when determining the current circuitry phase voltage signal equal to the voltage signal that the target circuitry phase is inputted
State the second time interval between predeterminated voltage zero-crossing timing point in the voltage signal of current circuitry phase；
The timing since the predeterminated voltage zero-crossing timing point, when timing duration reaches second time interval of determination,
The on-off circuit is closed by single-pole single-throw(SPST relay to connect with load side electrical circuitry.
5. a kind of phase change method without phase fault according to claim 4, it is characterised in that：The on-off circuit is carried out
Possesses disjunction/make delay during closed procedure；Correspondingly, also include in methods described step 4：
The timing since the predeterminated voltage zero-crossing timing point, when timing duration reaches the second preset duration, starts the mesh
The closed procedure of circuitry phase is marked, second preset duration is determined according to the following equation：
Tf2=Td2-Tr
Wherein, Tf2 represents second preset duration, and Td2 represents second time interval, and Tr represents the disjunction/closure
Delay.
6. a kind of commutation device without phase fault, including alternating current circuit, the alternating current circuit include power supply lateral circuit, switch electricity
Road and load side electrical circuitry, it is characterised in that：The power supply lateral circuit includes A circuitry phases, B circuitry phases, C circuitry phases, described A phases
Circuit, B circuitry phases, C circuitry phases respectively connect a voltage transformer, and the on-off circuit includes one and A circuitry phases, B phases electricity
Road connection the first single-pole double-throw relay, first single-pole double-throw relay, C circuitry phases be connected with the second single-pole double throw after
Electrical equipment, single-pole single-throw(SPST relay is connected between second single-pole double-throw relay and load side electrical circuitry；Described load-side
Circuit is connected with a voltage transformer and a current transformer.
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| CN201710414664.6A CN107147113A (en) | 2017-06-05 | 2017-06-05 | A kind of phase change method and device without phase fault |
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| CN201710414664.6A CN107147113A (en) | 2017-06-05 | 2017-06-05 | A kind of phase change method and device without phase fault |
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| CN108063446A (en) * | 2017-12-20 | 2018-05-22 | 厦门宏发电力电器有限公司 | A kind of three-phase phase reversal relay combining structure |
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| CN109088419A (en) * | 2018-08-31 | 2018-12-25 | 邹平县供电公司 | Single phase poaer supply phasing switch |
| CN110266025A (en) * | 2019-07-03 | 2019-09-20 | 青岛鼎信通讯股份有限公司 | A kind of three-phase intelligent phase-change switch device and control method optimizing switch topology |
| CN113725824A (en) * | 2020-12-28 | 2021-11-30 | 保定钰鑫电气科技有限公司 | Device for processing interphase short circuit |
| CN117239789A (en) * | 2023-11-13 | 2023-12-15 | 万帮数字能源股份有限公司 | Pile group three-phase balance control method and device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202353208U (en) * | 2011-12-03 | 2012-07-25 | 山东卓尔电气有限公司 | Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit |
| JP2014057482A (en) * | 2012-09-14 | 2014-03-27 | Takaoka Electric Mfg Co Ltd | Voltage adjustment device |
| CN105914763A (en) * | 2016-05-23 | 2016-08-31 | 江苏华奥科自动化技术有限公司 | Novel intelligent phase change switch and method for distribution network |
| CN205565745U (en) * | 2016-04-22 | 2016-09-07 | 北京燕能电气技术有限公司 | A automatic commutation device for low pressure three phase line |
| CN106130046A (en) * | 2016-08-25 | 2016-11-16 | 李建新 | A kind of AC three-phase load automatic-balancing system |
| CN106169758A (en) * | 2016-08-01 | 2016-11-30 | 北京燕能电气技术有限公司 | A kind of device and method of automatic raising low voltage three-phase line end voltage |
| CN106356878A (en) * | 2016-10-18 | 2017-01-25 | 泰豪科技股份有限公司 | Inter-phase load transfer method based on waveform fitting |
| CN206135426U (en) * | 2016-10-18 | 2017-04-26 | 泰豪科技股份有限公司 | Alternate load transfer terminating set based on match of stable state wave form |
| CN106684893A (en) * | 2016-12-12 | 2017-05-17 | 国网北京市电力公司 | Three-phase imbalance adjustment control method and control equipment |
-
2017
- 2017-06-05 CN CN201710414664.6A patent/CN107147113A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202353208U (en) * | 2011-12-03 | 2012-07-25 | 山东卓尔电气有限公司 | Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit |
| JP2014057482A (en) * | 2012-09-14 | 2014-03-27 | Takaoka Electric Mfg Co Ltd | Voltage adjustment device |
| CN205565745U (en) * | 2016-04-22 | 2016-09-07 | 北京燕能电气技术有限公司 | A automatic commutation device for low pressure three phase line |
| CN105914763A (en) * | 2016-05-23 | 2016-08-31 | 江苏华奥科自动化技术有限公司 | Novel intelligent phase change switch and method for distribution network |
| CN106169758A (en) * | 2016-08-01 | 2016-11-30 | 北京燕能电气技术有限公司 | A kind of device and method of automatic raising low voltage three-phase line end voltage |
| CN106130046A (en) * | 2016-08-25 | 2016-11-16 | 李建新 | A kind of AC three-phase load automatic-balancing system |
| CN106356878A (en) * | 2016-10-18 | 2017-01-25 | 泰豪科技股份有限公司 | Inter-phase load transfer method based on waveform fitting |
| CN206135426U (en) * | 2016-10-18 | 2017-04-26 | 泰豪科技股份有限公司 | Alternate load transfer terminating set based on match of stable state wave form |
| CN106684893A (en) * | 2016-12-12 | 2017-05-17 | 国网北京市电力公司 | Three-phase imbalance adjustment control method and control equipment |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994591A (en) * | 2017-12-20 | 2018-05-04 | 厦门宏发电力电器有限公司 | A kind of three-phase phase reversal relay combining structure with auto-lock function |
| CN108063446A (en) * | 2017-12-20 | 2018-05-22 | 厦门宏发电力电器有限公司 | A kind of three-phase phase reversal relay combining structure |
| CN108063446B (en) * | 2017-12-20 | 2024-05-14 | 厦门宏发电力电器有限公司 | Three-phase change relay combination structure |
| CN107966613A (en) * | 2017-12-26 | 2018-04-27 | 国家电网公司 | The special phase changer of direct-current resistance tester for transformer and phase change method |
| CN107966613B (en) * | 2017-12-26 | 2020-02-07 | 国家电网公司 | Special phase converter for transformer direct-current resistance tester and phase conversion method |
| CN108957067A (en) * | 2018-01-10 | 2018-12-07 | 厦门宏发电力电器有限公司 | A kind of three phase network keeps balance unit/terminal converter and its ammeter |
| CN108471125A (en) * | 2018-03-30 | 2018-08-31 | 杭州海兴电力科技股份有限公司 | With earth leakage protective three phase network commutation system |
| CN108565876A (en) * | 2018-05-29 | 2018-09-21 | 吉林特纳普节能技术有限公司 | A kind of no power-off has load commutation circuit |
| CN108599205A (en) * | 2018-06-28 | 2018-09-28 | 浙江百固电气科技股份有限公司 | A kind of phase-change switch main circuit and control method |
| CN109088419A (en) * | 2018-08-31 | 2018-12-25 | 邹平县供电公司 | Single phase poaer supply phasing switch |
| CN110266025A (en) * | 2019-07-03 | 2019-09-20 | 青岛鼎信通讯股份有限公司 | A kind of three-phase intelligent phase-change switch device and control method optimizing switch topology |
| CN113725824A (en) * | 2020-12-28 | 2021-11-30 | 保定钰鑫电气科技有限公司 | Device for processing interphase short circuit |
| CN113725824B (en) * | 2020-12-28 | 2023-12-15 | 保定钰鑫电气科技有限公司 | Device for processing interphase short circuit |
| CN117239789A (en) * | 2023-11-13 | 2023-12-15 | 万帮数字能源股份有限公司 | Pile group three-phase balance control method and device |
| CN117239789B (en) * | 2023-11-13 | 2024-03-22 | 万帮数字能源股份有限公司 | Pile group three-phase balance control method and device |
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Application publication date: 20170908 |