CN205246778U - Mimic -disconnecting switch for electric power - Google Patents
Mimic -disconnecting switch for electric power Download PDFInfo
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- CN205246778U CN205246778U CN201521058842.9U CN201521058842U CN205246778U CN 205246778 U CN205246778 U CN 205246778U CN 201521058842 U CN201521058842 U CN 201521058842U CN 205246778 U CN205246778 U CN 205246778U
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Abstract
The utility model discloses a mimic -disconnecting switch for electric power, switch module, action collection module and return circuit protective film piece including control module, switching power supply, drive module, operation circuit shutting module, return circuit impedance, control module respectively with switching power supply, drive module electricity are connected, operation circuit shutting module, return circuit impedance switch module, action collection module and return circuit protective film piece all with control module electricity connect, the utility model discloses can replace the circuit breaker to carry out various experiments and debugging at electric power system, can carry out operation and jump the experiment of closing a floodgate, need not safeguard the mimic -disconnecting switch many times, the state of protective apparatus action and the break -make state of monitoring loop can really react.
Description
Technical field
The utility model relates to a kind of breaker, relates in particular to a kind of electric power analog circuit device; Be mainly used in power system sceneMaintenance and debugging technique field.
Background technology
Breaker is the requisite equipment of power system, and breaker is used in different electric pressures different supporting models, electricityArbitrarily downgrading, more high cost is more not expensive, and the condition of use also has stricter requirement;
The action of field requirement breaker exceedes certain action frequency will overhaul, and therefore be used in opening circuit of 500 kilovolts of systemsDevice ordinary test cannot move by belt fuser, all carries out with output protection signal because there is a lot of protection equipment at sceneTrip protection is that best protection is broken in order to facilitate on-the-spot maintenance and debugging to use mimic-disconnecting switch system to replace breaker actionThe method of road device;
According to different scenes and different electric pressures, the tripping coil of mimic-disconnecting switch system can be provided with many grades and switch fullThe requirement of foot Different field;
Mimic-disconnecting switch system can be set as phase-splitting breaker tripping and closing action also can be set as three-phase breaker tripping and closing action, and there when action, have to be rightThe auxiliary contact output of answering feeds back to different protection equipment and uses.
Utility model content
The utility model, in order to make up the deficiencies in the prior art, provides a kind of electric power mimic-disconnecting switch, and this breaker structure is simple,Repeatedly breaker tripping and closing operation can be realized, the protection state of device action and the on off operating mode of monitoring loop can be reacted really;
For achieving the above object, the technical scheme that the utility model is taked is:
A kind of electric power mimic-disconnecting switch, comprises control module, Switching Power Supply, driver module, operation circuit lock modules, returnsThe anti-handover module of roadlock, action acquisition module and loop protection module; Described control module respectively with described Switching Power Supply, drivingModule electrical connection; Described operation circuit lock modules, impedance loop handover module, action acquisition module and loop protection module are equalBe electrically connected with described control module;
Also comprise A, B, C three-phase combined floodgate signal input part, be respectively AH signal input part, BH signal input part, CH signalInput; A, B, C three-phase trip signal input, be respectively AT signal input part, BT signal input part, the input of CT signalEnd; Described AH signal input part, BH signal input part, CH signal input part, AT signal input part, BT signal input part,CT signal input part is all connected with described operation circuit lock modules;
The auxiliary contact that also comprises A, B, C three-phase circuit, is respectively A1, A2, A3, B1, B2, B3, C1, C2, C3;The auxiliary contact of described A, B, C three-phase circuit is all connected with described driver module;
Further improve, described Switching Power Supply is 220V/12V power supply;
Further improve, described control module is single chip control module;
Further improve, described operation circuit lock modules comprises three groups of loop blocking function modules; Described loop blocking function mouldPiece comprises a switch relay K3, triode Q1, Q2, diode D3; The colelctor electrode of described triode Q1 is respectively with describedThe contact 2 of A, B, C three-phase combined floodgate signal input part, described switch relay K2 is connected; The emitter stage of described triode Q1Be connected with described impedance loop handover module; The base stage of described triode Q1 is connected with the contact 6 of described switch relay K2Connect; The colelctor electrode of described triode Q2 respectively with described A, B, C three-phase trip signal input, described switch relay K2Contact 1 be connected; The emitter stage of described triode Q2 is connected with described impedance loop handover module; Described triode Q2Base stage be connected with the contact 1 of described switch relay K2; The coil two ends of described switch relay K2 are parallel with one twoUtmost point pipe D3; The two ends link control module of described diode D3;
Further improve, described impedance loop handover module comprises transfer relay K1, K2; Resistance R 1, R2; Described resistance R 1A pin parallel connection of a pin and resistance R 2 after be connected with the normally-closed contact 1 of relay K 1; The normally-closed contact of described relay K 12 with another pin link circuit blocking function module of described resistance R 1; The contact 3 of described relay K 1 is connected with contact 5;Another pin of described resistance R 2 connects respectively the contact 6 of relay K 1, the contact 4 of relay K 2; Another of described resistance R 1Pin also connects the contact 1 of described relay K 2; A coil L1 two ends diode D1 in parallel of described relay K 1; Described continuingA coil L2 two ends diode D2 in parallel of electrical equipment K2; The two ends link control module of described diode D1, D2;
Impedance loop handover module is that the impedance matching in order to meet different protection equipment is used, and the control box of protection action is wanted rootAdhere in load current locking and loop according to output; The impedance handover module of every phase is by resistance and two relays in 2 220 Europe110,220,440 3 impedances can be become according to different combinations, the impedance matching of all devices can be met;
Further improve, described action acquisition module comprise collector U1, resistance R 3 R4 R5; One pin of described resistance R 3 connectsConnect impedance loop handover module; After another pin of described resistance R 3 is in parallel with a pin of described resistance R 4 with 1 pin of collector U1Be connected; Another pin of described resistance R 4,2 pin of collector U1, the equal ground connection of 4 pin; One pin of described resistance R 5 connects controlMolding piece+5V voltage signal end, after being connected with 3 pin of described collector U1, another pin is connected with described loop protection module;
Action sampling module is by electric resistance partial pressure, the both end voltage of resistance in the time reaching certain electric current according to the electric current of control signalCan drive optocoupler work, the electric current of input does not reach setting value optocoupler does not work and effectively prevents misoperation, owing to controlling letterNumber larger photoelectric coupling of interference ratio can be effectively and equipment power supply isolation, plays good Anti-Jamming; Electric current is by controllingWhat loop sampling module was passable gives single-chip microcomputer to a corresponding level signal, and single-chip microcomputer can be sent out tripping operation according to logic judgement, closesThe orders such as lock complete various operations;
Further improve, described loop protection module comprises relay K 4, triode Q3, rheostat Z1; Described triode Q3The contact 1 of colelctor electrode and relay K 4 be connected with described action acquisition module after in parallel; The emitter stage of described triode Q3Be connected with a pin of described rheostat Z1; Another pin ground connection of described rheostat Z1; Described triode Q3 base stage with described in continueThe contact 4 of electrical equipment K4 is connected; A coil two ends diode D4 in parallel of described relay K 4; Described diode D4 connectsControl module;
Loop protection module is to prevent that, when equipment is not switched on, control signal voltage is added in the signal input part of breaker tripping and closing,Ensure all not conductings of control loop, avoid electric current by moving the device damage causing, equipment is only powering on normallyOperation, the control relay action circuit of defencive function module could pass through electric current; In order more to prevent to protect control loop to damageNormally protection equipment has electric current for a long time by causing the overheated breaking out of fire of original paper, and loop adds thermistor, and electric current is logicalCross the long thermistor heating of loop time, after thermistor heating, resistance change reduces greatly the electric current passing through, and effectively protection is establishedStandby safety;
Compared with prior art, adopt such scheme, the beneficial effects of the utility model are: the utility model can be at electric powerSystem replaces breaker to carry out various tests and debugging, can carry out operation breaker tripping and closing test repeatedly, does not need simulation to open circuitDevice is safeguarded; Can react really the protection state of device action and the on off operating mode of monitoring loop;
Brief description of the drawings
Fig. 1 is circuit principle structure schematic diagram of the present utility model;
Fig. 2 is the circuit theory schematic diagram of impedance loop handover module in the utility model;
Fig. 3 is the circuit theory schematic diagram of operation circuit lock modules in the utility model;
Fig. 4 moves the circuit theory schematic diagram of acquisition module in the utility model;
Fig. 5 is the circuit theory schematic diagram of loop protection module in the utility model;
Fig. 6 is workflow diagram in the utility model;
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, a kind of electric power mimic-disconnecting switch, comprises control module, Switching Power Supply, driver module, operation circuitLock modules, impedance loop handover module, action acquisition module and loop protection module; Described control module is opened with described respectivelyClose power supply, driver module electrical connection; Described operation circuit lock modules, impedance loop handover module, action acquisition module and returnRoad protection module is all electrically connected with described control module;
Also comprise A, B, C three-phase combined floodgate signal input part, be respectively AH signal input part, BH signal input part, CH signalInput; A, B, C three-phase trip signal input, be respectively AT signal input part, BT signal input part, the input of CT signalEnd; Described AH signal input part, BH signal input part, CH signal input part, AT signal input part, BT signal input part,CT signal input part is all connected with described operation circuit lock modules;
The auxiliary contact that also comprises A, B, C three-phase circuit, is respectively A1, A2, A3, B1, B2, B3, C1, C2, C3;The auxiliary contact of described A, B, C three-phase circuit is all connected with described driver module; Auxiliary contact A1, A2, A3, B1, B2,B3, C1, C2, C3 have Chang Kai and normally closed second mate's contact;
Described Switching Power Supply is 220V/12V power supply; Described control module is single chip control module;
As shown in Figure 3, described operation circuit lock modules comprises three groups of loop blocking function modules; Described loop blocking function mouldPiece comprises a switch relay K3, triode Q1, Q2, diode D3; The colelctor electrode of described triode Q1 is respectively with describedThe contact 2 of A, B, C three-phase combined floodgate signal input part, described switch relay K2 is connected; The emitter stage of described triode Q1Be connected with described impedance loop handover module; The base stage of described triode Q1 is connected with the contact 6 of described switch relay K2Connect; The colelctor electrode of described triode Q2 respectively with described A, B, C three-phase trip signal input, described switch relay K2Contact 1 be connected; The emitter stage of described triode Q2 is connected with described impedance loop handover module; Described triode Q2Base stage be connected with the contact 1 of described switch relay K2; The coil two ends of described switch relay K2 are parallel with one twoUtmost point pipe D3; The two ends link control module of described diode D3;
As shown in Figure 2, described impedance loop handover module comprises transfer relay K1, K2; Resistance R 1, R2; Described resistance R 1A pin parallel connection of a pin and resistance R 2 after be connected with the normally-closed contact 1 of relay K 1; The normally-closed contact of described relay K 12 with another pin link circuit blocking function module of described resistance R 1; The contact 3 of described relay K 1 is connected with contact 5;Another pin of described resistance R 2 connects respectively the contact 6 of relay K 1, the contact 4 of relay K 2; Another of described resistance R 1Pin also connects the contact 1 of described relay K 2; A coil L1 two ends diode D1 in parallel of described relay K 1; Described continuingA coil L2 two ends diode D2 in parallel of electrical equipment K2; The two ends link control module of described diode D1, D2;
Impedance loop handover module is that the impedance matching in order to meet different protection equipment is used, and the control box of protection action is wanted rootAdhere in load current locking and loop according to output; The impedance handover module of every phase is by resistance and two relays in 2 220 Europe110,220,440 3 impedances can be become according to different combinations, the impedance matching of all devices can be met;
As shown in Figure 4, described action acquisition module comprise collector U1, resistance R 3 R4 R5; One pin of described resistance R 3 connectsConnect impedance loop handover module; After another pin of described resistance R 3 is in parallel with a pin of described resistance R 4 with 1 pin of collector U1Be connected; Another pin of described resistance R 4,2 pin of collector U1, the equal ground connection of 4 pin; One pin of described resistance R 5 connects controlMolding piece+5V voltage signal end, after being connected with 3 pin of described collector U1, another pin is connected with described loop protection module;
Action sampling module is by electric resistance partial pressure, the both end voltage of resistance in the time reaching certain electric current according to the electric current of control signalCan drive optocoupler work, the electric current of input does not reach setting value optocoupler does not work and effectively prevents misoperation, owing to controlling letterNumber larger photoelectric coupling of interference ratio can be effectively and equipment power supply isolation, plays good Anti-Jamming; Electric current is by controllingWhat loop sampling module was passable gives single-chip microcomputer to a corresponding level signal, and single-chip microcomputer can be sent out tripping operation according to logic judgement, closesThe orders such as lock complete various operations;
As shown in Figure 5, described loop protection module comprises relay K 4, triode Q3, rheostat Z1; Described triode Q3The contact 1 of colelctor electrode and relay K 4 be connected with described action acquisition module after in parallel; The emitter stage of described triode Q3Be connected with a pin of described rheostat Z1; Another pin ground connection of described rheostat Z1; Described triode Q3 base stage with described in continueThe contact 4 of electrical equipment K4 is connected; A coil two ends diode D4 in parallel of described relay K 4; Described diode D4 connectsControl module;
Loop protection module is to prevent that, when equipment is not switched on, control signal voltage is added in the signal input part of breaker tripping and closing,Ensure all not conductings of control loop, avoid electric current by moving the device damage causing, equipment is only powering on normallyOperation, the control relay action circuit of defencive function module could pass through electric current; In order more to prevent to protect control loop to damageNormally protection equipment has electric current for a long time by causing the overheated breaking out of fire of original paper, and loop adds thermistor, and electric current is logicalCross the long thermistor heating of loop time, after thermistor heating, resistance change reduces greatly the electric current passing through, and effectively protection is establishedStandby safety;
The utility model can replace breaker to carry out various tests and debugging in power system, and the operation that can carry out is repeatedly jumpedClose a floodgate and test, do not need mimic-disconnecting switch to safeguard; Can react really the state of protection device action and monitor backThe on off operating mode on road;
As shown in Figure 6, operation principle of the present utility model is that trip(ping) circuit (AT, BT, CT) and closing circuit (AH, BH, CH) are mutualPhase locking can only be led on You Yi road, and auxiliary contact be synchronous correspondence with needing replaced breaker. Such as breaker disconnectsState, breaker is waited for energization control signal, signal circuit only has combined floodgate control loop to lead to, at this moment actuating signal is straightStream voltage is added in combined floodgate input, and breaker action is closed a floodgate. If it is disconnected that at this moment the DC voltage of actuating signal is added in the input of tripping operation endRoad device control loop is obstructed, and breaker is failure to actuate, and breaker auxiliary contact position is at closing position. Otherwise breaker is in closing positionThe control loop that closes a floodgate while putting is obstructed, and separating brake control loop is the state of connecting, and breaker is waited for separating brake control signal. At this moment actionThe DC voltage of signal is added in separating brake input, breaker action separating brake. Breaker is got back to original gate-dividing state, breakerAuxiliary contact is also got back to a point position state. The blocking function in loop is completed by loop blocking function module, and control signal is sent out by single-chip microcomputerGo out locking order;
The utility model can replace breaker to carry out various tests and debugging in power system, and the operation that can carry out is repeatedly jumpedClose a floodgate and test, do not need mimic-disconnecting switch to safeguard; Can react really the state of protection device action and monitor backThe on off operating mode on road;
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, noThrough performing creative labour, all conversion of having done, within all dropping on protection domain of the present utility model.
Claims (7)
1. an electric power mimic-disconnecting switch, is characterized in that: comprise that control module, Switching Power Supply, driver module, operation returnRoad lock modules, impedance loop handover module, action acquisition module and loop protection module; Described control module is respectively with describedSwitching Power Supply, driver module electrical connection; Described operation circuit lock modules, impedance loop handover module, action acquisition module andLoop protection module is all electrically connected with described control module;
Also comprise A, B, C three-phase combined floodgate signal input part, be respectively AH signal input part, BH signal input part, CH signalInput; A, B, C three-phase trip signal input, be respectively AT signal input part, BT signal input part, the input of CT signalEnd; Described AH signal input part, BH signal input part, CH signal input part, AT signal input part, BT signal input part,CT signal input part is all connected with described operation circuit lock modules;
The auxiliary contact that also comprises A, B, C three-phase circuit, is respectively A1, A2, A3, B1, B2, B3, C1, C2, C3;The auxiliary contact of described A, B, C three-phase circuit is all connected with described driver module.
2. a kind of electric power mimic-disconnecting switch according to claim 1, is characterized in that: described Switching Power Supply is 220V/12VPower supply.
3. a kind of electric power mimic-disconnecting switch according to claim 1, is characterized in that: described control module is single-chip microcomputerControl module.
4. a kind of electric power mimic-disconnecting switch according to claim 1, is characterized in that: described operation circuit lock modulesComprise three groups of loop blocking function modules; Described loop blocking function module comprises a switch relay K3, triode Q1, Q2,Diode D3; The colelctor electrode of described triode Q1 respectively with described A, B, C three-phase combined floodgate signal input part, described switch relayThe contact 2 of device K2 is connected; The emitter stage of described triode Q1 is connected with described impedance loop handover module; Described three utmost pointsThe pipe base stage of Q1 and the contact 6 of described switch relay K2 are connected; The colelctor electrode of described triode Q2 respectively with described A, B,The contact 1 of C three-phase trip signal input, described switch relay K2 is connected; The emitter stage of described triode Q2 with described inImpedance loop handover module is connected; The base stage of described triode Q2 is connected with the contact 1 of described switch relay K2; InstituteThe coil two ends of stating switch relay K2 are parallel with a diode D3; The two ends link control module of described diode D3.
5. a kind of electric power mimic-disconnecting switch according to claim 1, is characterized in that: described impedance loop handover moduleComprise transfer relay K1, K2; Resistance R 1, R2; After one pin of described resistance R 1 is in parallel with a pin of resistance R 2 and relayThe normally-closed contact 1 of K1 is connected; The normally-closed contact 2 of described relay K 1 and another pin link circuit locking of described resistance R 1Functional module; The contact 3 of described relay K 1 is connected with contact 5; Another pin of described resistance R 2 connects respectively relayThe contact 6 of K1, the contact 4 of relay K 2; Another pin of described resistance R 1 also connects the contact 1 of described relay K 2; InstituteState a coil L1 two ends diode D1 in parallel of relay K 1; Coil L2 two ends two utmost points in parallel of described relay K 2Pipe D2; The two ends link control module of described diode D1, D2.
6. a kind of electric power mimic-disconnecting switch according to claim 1, is characterized in that: described action acquisition module comprisesCollector U1, resistance R 3 R4 R5; One pin link circuit impedance handover module of described resistance R 3; Another of described resistance R 3After one pin parallel connection of pin and described resistance R 4, be connected with 1 pin of collector U1; Another pin of described resistance R 4, collector U12 pin, the equal ground connection of 4 pin; One pin link control module of described resistance R 5+5V voltage signal end, another pin with described in adoptAfter connecting, 3 pin of storage U1 are connected with described loop protection module.
7. a kind of electric power mimic-disconnecting switch according to claim 1, is characterized in that: described loop protection module comprisesRelay K 4, triode Q3, rheostat Z1; After the contact 1 of the colelctor electrode of described triode Q3 and relay K 4 is in parallel and instituteStating action acquisition module is connected; The emitter stage of described triode Q3 is connected with a pin of described rheostat Z1; Described variable resistanceAnother pin ground connection of device Z1; Described triode Q3 base stage is connected with the contact 4 of described relay K 4; Described relay K 4A coil two ends diode D4 in parallel; Described diode D4 link control module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521058842.9U CN205246778U (en) | 2015-12-16 | 2015-12-16 | Mimic -disconnecting switch for electric power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521058842.9U CN205246778U (en) | 2015-12-16 | 2015-12-16 | Mimic -disconnecting switch for electric power |
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| CN205246778U true CN205246778U (en) | 2016-05-18 |
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| CN201521058842.9U Active CN205246778U (en) | 2015-12-16 | 2015-12-16 | Mimic -disconnecting switch for electric power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526472A (en) * | 2016-11-18 | 2017-03-22 | 国家电网公司 | Breaker integrated test apparatus |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526472A (en) * | 2016-11-18 | 2017-03-22 | 国家电网公司 | Breaker integrated test apparatus |
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