CN105788983B - A kind of breaker control system and method - Google Patents
A kind of breaker control system and method Download PDFInfo
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- CN105788983B CN105788983B CN201610266172.2A CN201610266172A CN105788983B CN 105788983 B CN105788983 B CN 105788983B CN 201610266172 A CN201610266172 A CN 201610266172A CN 105788983 B CN105788983 B CN 105788983B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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Abstract
The invention discloses a kind of breaker control system and method, the system includes identification circuit, closing pulse generative circuit, closing coil, power supply and control closing coil and switched with power on whether shutting-brake control；Wherein：Identification circuit the presence or absence of instructs situation according to reclosing command and separating brake, it is determined that current command status, and when current command status be "on" position, generation closing pulse generation instructs；Closing pulse generative circuit generates closing pulse when detecting closing pulse generation instruction；Shutting-brake control is switched when detecting closing pulse, connects closing coil and power supply, so that closing coil completes closing operation.In the present invention, only current command status can just perform closing operation when being "on" position, that is, even if there is reclosing command and separating brake instructs simultaneous situation, also it is not carried out closing operation, it can be seen that present invention effectively prevents repeatedly conjunction trip phenomenon, and then improve the service behaviour of breaker occur.
Description
Technical field
The present invention relates to technical field of electric equipment, more particularly to a kind of breaker control system and method.
Background technology
It is well known that breaker is power plant and the important electrical of transformer station, its effect is：In normal operating condition
Under, it is switched on or switched off high-tension circuit, the method for operation for changing primary equipment and main system etc.；Under nonserviceabling, failure is cut off
Equipment, to ensure main system safe operation and mitigate breakdown loss.
In the operating mechanism of breaker, breaker closing is typically to be powered to designing by the short time, i.e. the combined floodgate of breaker
Coil can only obtain electric the short time (in closing pulse width).After closing operation is carried out, breaker may be kept due to closing a floodgate
The reason such as relay adhesion or circuit breaker failure can not release reclosing command, and breaker will close a floodgate again, such breaker
Easily occur repeatedly closing trip phenomenon, influence the service behaviour of breaker.
Based on this, a kind of breaker control system and method that can be avoided the occurrence of and repeatedly close trip phenomenon is needed badly, and then
Improve the service behaviour of breaker.
The content of the invention
In view of this, the invention provides a kind of breaker control system and method, tripping operation is repeatedly closed now to avoid the occurrence of
As, and then improve the service behaviour of breaker.
In order to solve the above technical problems, the present invention provides a kind of breaker control system, including：Identification circuit, combined floodgate arteries and veins
Generative circuit, closing coil, power supply and the control closing coil is rushed to switch with the power on whether shutting-brake control；
Wherein：
The identification circuit is used for according to the presence or absence of reclosing command and separating brake instruction situation, it is determined that current command status,
And when the current command status is "on" position, generation closing pulse generation instruction；Wherein, the command status bag
Include "on" position, gate-dividing state, on/off switch state or without mode of operation；
The closing pulse generative circuit is used to, when detecting the closing pulse generation instruction, generate closing pulse；
The shutting-brake control is switched for when detecting the closing pulse, connecting the closing coil and the electricity
Source, so that the closing coil completes closing operation.
Preferably, the identification circuit include reclosing command detection sub-circuit, separating brake command detection sub-circuit and with institute
State the identification sub-circuit that reclosing command detection sub-circuit is connected with the separating brake command detection sub-circuit；
The reclosing command detection sub-circuit is used to detect the reclosing command；
The separating brake command detection sub-circuit is used to detect the separating brake instruction；
It is described identification sub-circuit be used for according to the reclosing command detect sub-circuit whether detect the reclosing command with
And whether detect that the separating brake instructs according to the separating brake command detection sub-circuit, the current command status is determined, and
And when the current command status is "on" position, generate the closing pulse generation instruction.
Preferably, the reclosing command detection sub-circuit includes reclosing command sampling resistor and combined floodgate photo-coupler；It is described
Separating brake command detection sub-circuit includes separating brake instruction sampling resistor and separating brake photo-coupler；The identification sub-circuit includes combined floodgate two
Pole pipe and separating brake diode；
One end of the reclosing command sampling resistor samples the electric signal of the reclosing command, another termination pipe that closes a floodgate
The electrode input end of coupler；The negative input of the combined floodgate photo-coupler connects the negative pole of the power supply, emitter-base bandgap grading output termination
The negative electrode of the combined floodgate diode；
One end of the separating brake instruction sampling resistor samples the electric signal of the separating brake instruction, another termination separating brake pipe
The electrode input end of coupler；The negative input of the separating brake photo-coupler connects the negative pole of the power supply, emitter-base bandgap grading output termination
The negative electrode of the separating brake diode；
The common port of the anode of the anode of the combined floodgate diode and the separating brake diode is as the identification sub-circuit
Output end.
Preferably, the closing pulse generative circuit includes differential sub-circuit and monostable flipflop；
The output end of the input termination identification sub-circuit of the differential sub-circuit, output terminate the monostable trigger
The clock port of device, the positive pulse output of the monostable flipflop terminate the shutting-brake control switch.
Preferably, the shutting-brake control switch is insulated gate bipolar transistor；
The grid of the insulated gate bipolar transistor connects the closing pulse generative circuit, emitter-base bandgap grading connects the closing coil
One end and colelctor electrode connect the positive pole of the power supply；
The negative pole of another termination power supply of the closing coil.
Preferably, in addition to：
The optocoupler being connected between the grid of the insulated gate bipolar transistor and the closing pulse generative circuit touches
Send out device.
Preferably, in addition to：
The reclosing command generative circuit and separating brake command generating circuit being connected with the identification circuit；
The reclosing command generative circuit is used to generate the reclosing command when detecting combined floodgate demand；The separating brake refers to
Generative circuit is made to be used to generate the separating brake instruction when detecting separating brake demand.
Preferably, the reclosing command generative circuit is combined floodgate holding contact, one end of the combined floodgate holding contact and institute
The positive pole for stating power supply is connected, and the other end is connected with the identification circuit；
Separating brake command generating circuit is separating brake holding contact, one end of the separating brake holding contact and the positive pole of the power supply
It is connected, the other end is connected with the identification circuit.
Preferably, in addition to：
Jump position monitoring resistance and jump position relay；
The colelctor electrode of the termination insulated gate bipolar transistor for jumping position monitoring resistance, another termination are described absolutely
The emitter-base bandgap grading of edge grid bipolar transistor；
The jump position relay is parallel to the combined floodgate holding contact.
Present invention also offers a kind of breaker control method, applied to breaker control system, the breaker control
System includes identification circuit, closing pulse generative circuit, closing coil, power supply and the control closing coil and the power supply
The shutting-brake control switch whether connected；
This method includes：
The identification circuit the presence or absence of instructs situation according to reclosing command and separating brake, it is determined that current command status, and
When the current command status is "on" position, generation closing pulse generation instruction；Wherein, the command status includes closing
Lock state, gate-dividing state, on/off switch state or without mode of operation；
The closing pulse generative circuit generates closing pulse when detecting the closing pulse generation instruction；
The shutting-brake control switch connects the closing coil and the power supply when detecting the closing pulse, with
The closing coil is set to complete closing operation.
In a kind of above breaker control system provided by the invention and method, breaker control system includes identification electricity
Road, closing pulse generative circuit, closing coil, power supply and the control closing coil and the power on whether combined floodgate
Controlling switch；Specifically, the identification circuit is according to the presence or absence of reclosing command and separating brake instruction situation, it is determined that current instruction shape
State, and when the current command status is "on" position, generation closing pulse generation instruction；Wherein, the instruction shape
State includes "on" position (only reclosing command), gate-dividing state (only separating brake instruction), on/off switch state (reclosing command and separating brake
Instruction exists simultaneously) and without mode of operation (reclosing command and separating brake are instructed while be not present)；The closing pulse generation electricity
Road generates closing pulse when detecting the closing pulse generation instruction；The shutting-brake control switch is detecting the conjunction
During lock pulse, the closing coil and the power supply are connected, so that the closing coil completes closing operation.
As can be seen here, in the present invention, when only current command status is "on" position, closing pulse generative circuit is
Closing pulse can be generated, and then can just perform corresponding closing operation, that is to say, that even if there is reclosing command and separating brake instruction
Simultaneous situation (i.e. because the reasons such as the adhesion of combined floodgate guard relay or circuit breaker failure can not release reclosing command),
Also it is not carried out closing operation, it is seen then that present invention effectively prevents repeatedly conjunction trip phenomenon, and then improve breaker occur
Service behaviour.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of structured flowchart schematic diagram of breaker control system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of identification circuit in Fig. 1 provided in an embodiment of the present invention；
Fig. 3 is the attachment structure schematic diagram of breaker control system provided in an embodiment of the present invention and breaker；
Fig. 4 is a kind of electrical block diagram of breaker control system provided in an embodiment of the present invention；
Fig. 5 is a kind of flow chart of breaker control method provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The core of the present invention is to provide a kind of breaker control system and method, and trip phenomenon is repeatedly closed to avoid the occurrence of,
And then improve the service behaviour of breaker.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
With reference to figure 1, Fig. 1 shows a kind of structured flowchart signal of breaker control system provided in an embodiment of the present invention
Figure, the system mainly include identification circuit 100, closing pulse generative circuit 101, closing coil 103 (also referred to as HQ), power supply KM with
And control closing coil 103 and power on whether shutting-brake control switch 102, also, in the present invention, reclosing command HX and point
The presence or absence of lock instruction FX identifies whether to need to carry out closing operation and sub-switching operation, and closing pulse mark needs to carry out closing operation
And closing coil 103 is controlled to carry out corresponding closing operation.Command status in circuit has four kinds of situations, i.e., (only closes a floodgate and refer to
Make), gate-dividing state (only separating brake instruction), on/off switch state (reclosing command and separating brake instruction while exist) and without operating shape
State (reclosing command and separating brake instruction are not present simultaneously).Specifically：
Identification circuit 100 is used for according to the presence or absence of reclosing command and separating brake instruction situation, it is determined that current command status, and
And when current command status is "on" position, generation closing pulse generation instruction, i.e., identification circuit 100 is according to current finger
Whether writ state, judgement currently meet closing pulse formation condition, specifically, when current command status is "on" position,
Think to meet combined floodgate formation condition；Closing pulse generative circuit 101 is connected with identification circuit 100, for detecting combined floodgate arteries and veins
During punching generation instruction, closing pulse is generated；Shutting-brake control switch 102 is connected with closing pulse, for detecting closing pulse
When, closing coil 103 and power supply are connected, so that closing coil 103 completes closing operation.
Wherein, power supply KM includes positive pole (+KM) and negative pole (- KM).
Further, present system can also include the reclosing command generative circuit 104 being connected with identification circuit 100
With separating brake command generating circuit 105, reclosing command generative circuit 104 is used to generate reclosing command when detecting combined floodgate demand；
Separating brake command generating circuit 105 is used to generate separating brake instruction when detecting separating brake demand.
It is understood that present system can also include being used for the switching winding 106 for completing sub-switching operation (also referred to as
TQ), one end of switching winding 106 is connected with separating brake command generating circuit 105, and the other end is connected with the negative pole (- KM) of power supply.
In specific implementation process, with reference to figure 2, identification circuit 100 can include reclosing command detection sub-circuit 1000, divide
Lock command detection sub-circuit 1001 and with reclosing command detect sub-circuit 1000 and separating brake command detection sub-circuit 1001 it is homogeneous
Identification sub-circuit 1002 even, reclosing command detection sub-circuit 1000 and separating brake command detection sub-circuit 1001 refer to combined floodgate respectively
Make generative circuit 104, separating brake command generating circuit 105 be connected, and be respectively used to detect reclosing command, separating brake instruction；Identification
Circuit is used to detect whether sub-circuit 1000 detects reclosing command and according to separating brake command detection son electricity according to reclosing command
Whether road 1001 detects that separating brake instructs, it is determined that current command status, and when current command status is "on" position,
Generate closing pulse generation instruction.
As can be seen here, in the present invention, when only current command status is "on" position, closing pulse generative circuit
101 can just generate closing pulse, and then can just perform corresponding closing operation, that is to say, that even if reclosing command occur and dividing
Lock instructs simultaneous situation (i.e. because the reasons such as the adhesion of combined floodgate guard relay or circuit breaker failure can not release combined floodgate
Instruction), also it is not carried out closing operation, it is seen then that present invention effectively prevents appearance repeatedly to close trip phenomenon, and then improves and resolve
The service behaviour of road device.
Based on the technical scheme disclosed in the embodiments of the present invention, in an alternative embodiment of the invention, answered based on actual
With, further, the attachment structure schematic diagram of breaker control system and breaker with reference to shown in figure 3, wherein, handcart experiment
Position switch S8 and S9, location aided rebroadcast switch QF1, closing coil HQ, shutting-brake control switch 102 and energy storage position switch S1 groups
Into closing circuit；Location aided rebroadcast switchs QF2 and switching winding TQ composition sub-gate circuits.
In the present invention, shutting-brake control switch 102 is specifically as follows insulated gate bipolar transistor VT1；Insulated gate bipolar
Grid engagement lock pulse generation circuit 101, the emitter-base bandgap grading of transistor switch S1 by energy storage position and connect closing coil HQ one end, collection
Electrode passes sequentially through handcart testing position switch S8 and S9, the combined floodgate concatenated in the line after location aided rebroadcast switch QF1, parallel connection and protected
Hold being connected for contact HBJ and the positive pole (+KM) of power supply；The negative pole (- KM) of closing coil HQ another termination power.
Wherein, combined floodgate holding contact HBJ is as reclosing command generative circuit 104, its one end and positive pole (+KM) phase of power supply
Even, the other end is connected with identification circuit 100；Similarly, separating brake holding contact TBJ is as separating brake command generating circuit 105, one
End is connected with the positive pole (+KM) of power supply, and the other end is connected with identification circuit 100.
Further, in terms of combined floodgate, present system can also include jumping position monitoring resistance R12 and jump position relay
TWJ；The colelctor electrode of a position monitoring resistance R12 termination insulated gate bipolar transistor is jumped, another termination insulated gate bipolar is brilliant
The emitter-base bandgap grading of body pipe；Jump position relay and be parallel to combined floodgate holding contact.For in terms of separating brake, present system can also include closing position
Relay HWJ；Close position relay and be parallel to separating brake holding contact.
In actual applications, can be by combined floodgate holding contact HBJ, separating brake holding contact TBJ, jump position relay TWJ and conjunction
Position relay HWJ is arranged in breaker operation cabinet.
Based on breaker control system disclosed in the various embodiments described above, in yet another embodiment of the invention, with reference to figure 4, close
Lock command detection sub-circuit 1000 can specifically include reclosing command sampling resistor and combined floodgate photo-coupler U1 (abbreviation optocoupler U1),
In the specific implementation, reclosing command sampling resistor can be composed in series by resistance R1 and resistance R2.Separating brake command detection sub-circuit
1001 specifically can instruct sampling resistor and separating brake photo-coupler U2 (abbreviation optocoupler U2) with separating brake, and in the specific implementation, separating brake refers to
Sampling resistor is made to be made up of resistance R5 and resistance R6.Identification sub-circuit can specifically include combined floodgate diode D1 and separating brake two
Pole pipe D2；Output end of the common port of the anode of combined floodgate diode and the anode of separating brake diode as identification sub-circuit, namely
The output end of identification circuit 100, represented with A points in Fig. 4.
One end of reclosing command sampling resistor samples the electric signal of reclosing command, the other end at reclosing command test point HX
Engage the electrode input end (i.e. U1 1 pin in Fig. 4) of brake tube coupler；Negative input (the i.e. U1 in Fig. 4 of combined floodgate photo-coupler
2 pin) connect the negative pole of power supply, emitter-base bandgap grading output end engages the negative electrode of lock diode.
One end of separating brake instruction sampling resistor samples the electric signal of separating brake instruction, the other end at separating brake command detection point FX
Connect the electrode input end of separating brake pipe coupler；The negative input of separating brake photo-coupler connects the negative pole of power supply, emitter-base bandgap grading output termination
The negative electrode of separating brake diode.
In the present invention, for closing pulse generative circuit 101, it can specifically include differential sub-circuit and monostable trigger
Device；The output end of the input termination identification sub-circuit of differential sub-circuit, the clock port of output end order steady state trigger is (i.e.
CLK ends), positive pulse output end (i.e. Q ends) the engagement lock controlling switch 102 of monostable flipflop.Wherein, differential sub-circuit is by electricity
Hold C1 and resistance R8 compositions；Monostable flipflop is made up of d type flip flop, resistance R9 and electric capacity C2, and annexation can refer to Fig. 4 institutes
Show, can also refer to prior art to realize the monostable flipflop of the present invention herein.
It is understood that in the present invention, the width of breaker closing pulse is relevant with resistance R9 and electric capacity C2, and design takes
Value makes pulse width be more than the normal closing time of breaker, can use 50~60ms.VR is piezo-resistance in figure, and D5 is transient state
Voltage suppression diode, R13, D4 and C6 composition resistance capaciting absorpting circuit.Piezo-resistance VR and transient voltage suppressor diode D5 master
Suppress peak overvoltage, resistance capaciting absorpting circuit mainly suppresses to turn off overvoltage.
In addition, the grid that present system can also include being connected to insulated gate bipolar transistor generates with closing pulse
Optocoupler trigger U4 between circuit 101, to ensure the grid of insulated gate bipolar transistor and closing pulse generative circuit 101
Between electric signal isolation degree.
For the connection scheme of other circuit elements in Fig. 4 and the connection scheme of other ports, institute of the present invention can realized
On the basis of attributive function, prior art is referred to, the present invention does not do excessive elaboration herein.
The circuit concrete scheme of summary breaker control system, the operation principle of breaker control system of the present invention
For：
During control system normal power-up (under no operational circumstances), switching signal test point HX and sub-gate signal test point FX
No-voltage, optocoupler U1 and optocoupler U2 no currents by, be cut-off state, optocoupler U1 3 pin output is low level, the 4 of optocoupler U2
Pin output is high level, and A points voltage is low level, and trigger U3 Q ends output is low level, and optocoupler U4 outputs are low level,
Transistor VT1 is off state.Under normal circumstances, circuit breaker cart is in testing position or operating position, i.e. testing position
Switch S8 or operating position switch S9 closures, energy storage switch S1 are closed, now VT1 C-terminal is in forward voltage bias with E ends
Under.
When breaker carries out closing operation (only reclosing command, i.e. "on" position), the combined floodgate in breaker operation cabinet
Holding contact HBJ closures (HX points produce voltage, reclosing command be present), power supply+KM forms loop through resistance R1, R2, optocoupler U1,
Optocoupler U1 is turned on, and optocoupler U1 3 pin output is high level, and for optocoupler U2 because of FX points no-voltage (separating brake is not present to instruct), its 4 pin is defeated
Go out for high level, A point voltage outputs be high level (be high level only in the case where HX points have voltage and FX point no-voltages,
Think that A point voltages high level sends closing pulse generation instruction to closing pulse generative circuit 101), through C1 and R8 compositions
Differential circuit, U3 3 pin (i.e. CLK ports) input is pulse signal, and trigger U3 Q ends output is high level pulse (high electricity
Flat pulse is to generate closing pulse), optocoupler U4 outputs are high level pulse, and transistor VT1 is turned on, breaker closing coil HQ
It is powered, carries out closing operation.Under normal circumstances, after in-place closing, auxiliary switch for circuit breaker QF1 normally-closed contacts disconnect, and cut
Disconnected closing coil loop, VT1 shut-offs.Combined floodgate holding contact HBJ disconnects, and optocoupler U1 3 pin output is low level, and circuit returns to
Normal power-up state.
Special instruction is needed exist for, in the present invention, optocoupler U4 outputs are high level pulse signal, in closing pulse
After failure (i.e. no closing pulse), transistor VT1 cut-out closing coil loop, is effectively kept away because grid bears negative voltage shut-off
Exempt to be powered when closing coil HQ is long and burnt, be not in problems with of the prior art：May be because of breaker itself
Reason and causing is closed a floodgate unsuccessful, and closes a floodgate unsuccessful so that auxiliary switch for circuit breaker QF1 normally-closed contacts can not disconnect, Jin Erzao
Into breaker closing coil HQ it is long when be powered.
Meanwhile in the prior art, breaker may can not be closed because of breaker reason itself, breaker returns again
To gate-dividing state, multiple " close-point " phenomenon of breaker can be produced, i.e. multiple conjunction trip phenomenon.In the present invention, because optocoupler
U4 outputs are high level pulse signal, and after closing pulse failure, transistor VT1 ensures because grid bears negative voltage shut-off
When closing pulse is effective, breaker can only operate combined floodgate once, effectively prevent breaker because the former resulting jump of body
Phenomenon.
At breaker open operation position, if switching signal test point HX and sub-gate signal test point FX have voltage, (combined floodgate refers to
Order exists simultaneously with separating brake instruction, i.e. opening and closing state), power supply+KW forms loop through resistance R1, R2, and optocoupler U1 is turned on, so
Optocoupler U1 3 pin output is high level, and source resistance R5, R6 form loop, optocoupler U2 conductings, so optocoupler U2 4 pin output
For low level, A points voltage output is low level (low level does not send closing pulse generation instruction), and trigger U3 Q ends export
For low level (not generating closing pulse), optocoupler U4 outputs are low level, and transistor VT1 is off state, and breaker is not
Closing operation can be carried out, fundamentally prevents multiple " close-point " phenomenon of breaker.
When breaker is in closing position, and mistake press opening button, i.e., switching signal test point HX no-voltages, sub-gate signal are examined
With the presence of voltage (reclosing command is not present and separating brake instructs, i.e. gate-dividing state), optocoupler U1 ends measuring point FX, so optocoupler U1
The output of 3 pin is low level, and power supply forms loop, optocoupler U2 conductings through resistance R5, R6, so optocoupler U2 4 pin output is low electricity
Flat, A points voltage output is low level (low level does not send closing pulse generation instruction), and trigger U3 Q ends output is low electricity
Flat, optocoupler U4 outputs are low level (not generating closing pulse), and transistor VT1 is off state, and breaker can not be carried out
Closing operation.
When breaker carries out sub-switching operation (only separating brake instruction), the combined floodgate holding contact TBJ in breaker operation cabinet
Closure, power supply+KM form loop through auxiliary contacts of circuit breaker QF2, switching winding TQ, and breaker open operation coil TQ is powered, and carries out
Sub-switching operation.When separating brake in place after, auxiliary switch for circuit breaker QF contacts disconnect, cut-out switching winding loop.
In addition, resistance R12 is to jump position monitoring for breaker to set, because transistor VT1 C in the state of being not turned on
Resistance between pole and E poles is infinity, jumps position relay and is failure to actuate, it is impossible to correct reflection closing circuit situation, for this in VT1
C poles and E poles indirect resistance R12, resistance value is 15k Ω.For breaker in open position, power supply is through jumping position relay TWJ
Coil, circuit-breaker testing switch S8 or operating position switch S9, auxiliary contacts of circuit breaker QF1, resistance R12, breaker closing line
HQ compositions loop is enclosed, jumps position relay TWJ actions, represents that closing circuit is normal.To prevent resistance R1, R2 with jumping position relay
TWJ forms parasitic loop, causes and jumps position relay TWJ malfunctions, and R1 values are that 22k Ω, R2 are 2.2 Ω, jump position relay TWJ
Resistance is generally 40k Ω, and the electric current in the loop is 220/64.2=3.4mA, and optocoupler U1 ends, and relay TWJ coils will not move
Make.R5, R6 value are consistent with R1, R2 in sub-gate circuit.
The breaker control system provided based on the embodiments of the present invention, the embodiment of the present invention additionally provide a kind of open circuit
Device control method, this method are applied to breaker control system disclosed in above-described embodiment, and with reference to figure 5, this method can include
Following steps：
Step S500, identification circuit 100 is according to the presence or absence of reclosing command and separating brake instruction situation, it is determined that current instruction shape
State, and when current command status is "on" position, generation closing pulse generation instruction；
Wherein, command status includes "on" position, gate-dividing state, on/off switch state or without mode of operation.
Step S501, closing pulse generative circuit 101 generates closing pulse when detecting closing pulse generation instruction.
Step S502, shutting-brake control switch 102 connects closing coil HQ and power supply when detecting closing pulse, so that
Closing coil HQ completes closing operation.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiments, between each embodiment identical similar part mutually referring to.
For method class embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is joined
See the part explanation of embodiment of the method.
A kind of breaker control system provided by the present invention and method are described in detail above.It is used herein
Specific case is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands
The method and its core concept of the present invention.It should be pointed out that for those skilled in the art, this is not being departed from
On the premise of inventive principle, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the present invention
In scope of the claims.
Claims (8)
- A kind of 1. breaker control system, it is characterised in that including：Identification circuit, closing pulse generative circuit, closing coil, Power supply and the control closing coil switch with the power on whether shutting-brake control；Wherein：The identification circuit is used for according to the presence or absence of reclosing command and separating brake instruction situation, it is determined that current command status, and When the current command status is "on" position, generation closing pulse generation instruction；Wherein, the command status includes closing Lock state, gate-dividing state, on/off switch state or without mode of operation；The closing pulse generative circuit is used to, when detecting the closing pulse generation instruction, generate closing pulse；The shutting-brake control is switched for when detecting the closing pulse, connecting the closing coil and the power supply, with The closing coil is set to complete closing operation；The identification circuit includes reclosing command detection sub-circuit, separating brake command detection sub-circuit and examined with the reclosing command Survey the identification sub-circuit that sub-circuit is connected with the separating brake command detection sub-circuit；The reclosing command detection sub-circuit is used to detect the reclosing command；The separating brake command detection sub-circuit is used to detect the separating brake instruction；The identification sub-circuit is used to detect whether sub-circuit detects the reclosing command and root according to the reclosing command Separating brake instruction whether is detected according to the separating brake command detection sub-circuit, determines the current command status, and When the current command status is "on" position, the closing pulse generation instruction is generated；The reclosing command detection sub-circuit includes reclosing command sampling resistor and combined floodgate photo-coupler；The separating brake command detection Sub-circuit includes separating brake instruction sampling resistor and separating brake photo-coupler；The identification sub-circuit includes combined floodgate diode and separating brake two Pole pipe；One end of the reclosing command sampling resistor samples the electric signal of the reclosing command, another termination combined floodgate optical coupling The electrode input end of device；The negative input of the combined floodgate photo-coupler connects the negative pole of the power supply, and emitter-base bandgap grading is exported described in termination The negative electrode of combined floodgate diode；One end of the separating brake instruction sampling resistor samples the electric signal of the separating brake instruction, another termination separating brake optical coupling The electrode input end of device；The negative input of the separating brake photo-coupler connects the negative pole of the power supply, and emitter-base bandgap grading is exported described in termination The negative electrode of separating brake diode；The common port of the anode of the anode of the combined floodgate diode and the separating brake diode is defeated as the identification sub-circuit Go out end.
- 2. the system as claimed in claim 1, it is characterised in that the closing pulse generative circuit includes differential sub-circuit and list Steady state trigger；The output end of the input termination identification sub-circuit of the differential sub-circuit, output terminate the monostable flipflop Clock port, the positive pulse output of the monostable flipflop terminate the shutting-brake control switch.
- 3. system as claimed in claim 1 or 2, it is characterised in that the shutting-brake control switch is insulated gate bipolar crystal Pipe；The grid of the insulated gate bipolar transistor connects the closing pulse generative circuit, emitter-base bandgap grading connects the one of the closing coil End and colelctor electrode connect the positive pole of the power supply；The negative pole of another termination power supply of the closing coil.
- 4. system as claimed in claim 3, it is characterised in that also include：The optocoupler trigger being connected between the grid of the insulated gate bipolar transistor and the closing pulse generative circuit.
- 5. system as claimed in claim 3, it is characterised in that also include：The reclosing command generative circuit and separating brake command generating circuit being connected with the identification circuit；The reclosing command generative circuit is used to generate the reclosing command when detecting combined floodgate demand；The separating brake instruction life It is used to generate the separating brake instruction when detecting separating brake demand into circuit.
- 6. system as claimed in claim 5, it is characterised in that the reclosing command generative circuit is combined floodgate holding contact, institute The one end for stating combined floodgate holding contact is connected with the positive pole of the power supply, and the other end is connected with the identification circuit；Separating brake command generating circuit is separating brake holding contact, one end of the separating brake holding contact and the positive pole phase of the power supply Even, the other end is connected with the identification circuit.
- 7. system as claimed in claim 6, it is characterised in that also include：Jump position monitoring resistance and jump position relay；The colelctor electrode of the termination insulated gate bipolar transistor for jumping position monitoring resistance, another termination insulated gate The emitter-base bandgap grading of bipolar transistor；The jump position relay is parallel to the combined floodgate holding contact.
- A kind of 8. breaker control method, it is characterised in that applied to breaker control system, the breaker control system bag Include identification circuit, closing pulse generative circuit, closing coil, power supply and the control closing coil and the power on No shutting-brake control switch；This method includes：The identification circuit the presence or absence of instructs situation according to reclosing command and separating brake, it is determined that current command status, and in institute When to state current command status be "on" position, generation closing pulse generation instruction；Wherein, the command status includes combined floodgate shape State, gate-dividing state, on/off switch state or without mode of operation；The identification circuit includes reclosing command detection sub-circuit, separating brake refers to Order detection sub-circuit and the identification being connected with reclosing command detection sub-circuit and the separating brake command detection sub-circuit Sub-circuit；The reclosing command detection sub-circuit is used to detect the reclosing command；The separating brake command detection sub-circuit is used for Detect the separating brake instruction；The identification sub-circuit is used to detect whether sub-circuit detects the conjunction according to the reclosing command Lock instructs and whether detects that the separating brake instructs according to the separating brake command detection sub-circuit, determines the current instruction State, and when the current command status is "on" position, generate the closing pulse generation instruction；The combined floodgate refers to Order detection sub-circuit includes reclosing command sampling resistor and combined floodgate photo-coupler；The separating brake command detection sub-circuit includes separating brake Instruct sampling resistor and separating brake photo-coupler；The identification sub-circuit includes combined floodgate diode and separating brake diode；The combined floodgate One end of sampling resistor is instructed to sample the electric signal of the reclosing command, the positive pole input of another termination combined floodgate photo-coupler End；The negative input of the combined floodgate photo-coupler connects the negative pole of the power supply, and emitter-base bandgap grading output terminates the combined floodgate diode Negative electrode；One end of the separating brake instruction sampling resistor samples the electric signal of the separating brake instruction, another termination separating brake optocoupler The electrode input end of clutch；The negative input of the separating brake photo-coupler meets the negative pole of the power supply, emitter-base bandgap grading output termination institute State the negative electrode of separating brake diode；Described in the common port of the anode of the anode of the combined floodgate diode and the separating brake diode is used as Identify the output end of sub-circuit；The closing pulse generative circuit generates closing pulse when detecting the closing pulse generation instruction；The shutting-brake control switch connects the closing coil and the power supply, so that institute when detecting the closing pulse State closing coil and complete closing operation.
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| CN201610266172.2A CN105788983B (en) | 2016-04-25 | 2016-04-25 | A kind of breaker control system and method |
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| CN105788983B true CN105788983B (en) | 2018-03-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106783363A (en) * | 2016-11-16 | 2017-05-31 | 合肥普望电子有限责任公司 | A kind of high breaking ammeter external breaker control system |
| CN108319321A (en) * | 2018-02-24 | 2018-07-24 | 河南华盛隆源电气有限公司 | Breaker start pulse signal output control method, device and circuit breaker system |
| CN113237678A (en) * | 2021-04-16 | 2021-08-10 | 德基申（厦门）电气有限公司 | Method and equipment for testing mechanical function of circuit breaker |
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| CN105788983A (en) | 2016-07-20 |
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