CN103384059B - A kind of vacuum circuit breaker energy storage motor protection circuit - Google Patents
A kind of vacuum circuit breaker energy storage motor protection circuit Download PDFInfo
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- CN103384059B CN103384059B CN201310283615.5A CN201310283615A CN103384059B CN 103384059 B CN103384059 B CN 103384059B CN 201310283615 A CN201310283615 A CN 201310283615A CN 103384059 B CN103384059 B CN 103384059B
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- energy storage
- storage motor
- auxiliary reclay
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- time relay
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Abstract
The invention discloses a kind of vacuum circuit breaker energy storage motor protection circuit, include energy storage motor, energy storage motor is with DC voltage just, a dc switch it is connected between negative pole, energy storage motor is parallel with the second auxiliary reclay successively, the time relay, first auxiliary reclay, energy storage motor is in series with the normal opened contact one of the first auxiliary reclay, the normally closed contact of the second auxiliary reclay, second auxiliary reclay is in series with the time closing contact of the time relay, the time closing contact of the time relay is parallel with the normal opened contact of the second auxiliary reclay, the time relay is in series with the normal opened contact two of the first auxiliary reclay, first auxiliary reclay is in series with microswitch.The present invention improves energy storage motor circuit reliability, it is possible to decrease this type of fault causes energy storage motor damage accident, and the operation making intermediate distribution system is relatively reliable.
Description
Technical field
The invention belongs to intermediate distribution system field, be specifically related to a kind of vacuum circuit breaker energy storage motor protection circuit, pacify reliable row for the national games for distribution system vacuum circuit breaker and provide safeguard.
Background technology
In medium-voltage distribution field, the operation of vacuum circuit breaker energy storage motor and stopping rely primarily on the microswitch of stored energy mechanism and control.Under normal circumstances, during non-energy storage, microswitch junction closure, energy storage motor runs；Otherwise microswitch contact disconnects, and energy storage motor is out of service.But in actual motion, it sometimes appear that because of microswitch fault, the contact of microswitch can not disconnect energy storage motor circuit, cause energy storage motor long time running, this long time running that motor can be caused to damage, cause the power transmission of can not closing a floodgate in time of distribution system.It is thus desirable to one is to energy storage motor running protection circuit.
Currently used intermediate distribution system vacuum circuit breaker energy storage motor protective loop such as Fig. 1, during spring unstored energy, microswitch 5 is closing position, energy storage motor 1 charging operation.If during microswitch 5 fault, being constantly in closure state, then energy storage motor 1 will be chronically at charging operation state, it is impossible to automatically cuts off power supply.
Summary of the invention
It is an object of the invention to provide a kind of vacuum circuit breaker energy storage motor protection circuit; the operation time of limiting motor; automatically the power supply of motor is excised after exceeding the setting time; pressure energy storage motor is out of service; avoiding motor long-play to cause the fault of damage, the operation making intermediate distribution system is relatively reliable.
The present invention is achieved in that
A kind of vacuum circuit breaker energy storage motor protection circuit, include energy storage motor, it is characterized in that: described energy storage motor is with DC voltage just, a dc switch it is connected between negative pole, energy storage motor is parallel with the second auxiliary reclay successively, the time relay, first auxiliary reclay, energy storage motor is in series with the normal opened contact one of the first auxiliary reclay, the normally closed contact of the second auxiliary reclay, second auxiliary reclay is in series with the time closing contact of the time relay, the time closing contact of the time relay is parallel with the normal opened contact of the second auxiliary reclay, the time relay is in series with the normal opened contact two of the first auxiliary reclay, first auxiliary reclay is in series with microswitch.
Described a kind of vacuum circuit breaker energy storage motor protection circuit, it is characterised in that: described microswitch uses spring energy-storage microswitch.
When energy storage motor brings into operation energy storage, triggered time relay starts timing simultaneously；If spring energy-storage microswitch is in closure state all the time, it is impossible to disconnect energy storage motor circuit；The time relay will disconnect energy storage motor circuit by the normally closed contact of the second auxiliary reclay after setting time delays, thus reach to limit energy storage motor and run the purpose of time.
The invention has the beneficial effects as follows:
The present invention improves energy storage motor circuit reliability, it is possible to decrease this type of fault causes energy storage motor damage accident, and the operation making intermediate distribution system is relatively reliable.
Accompanying drawing explanation
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is existing energy storage motor protection circuit schematic diagram.
Fig. 2 is energy storage motor protection circuit schematic diagram of the present invention.
Label in figure:
1 is energy storage motor, and 2 is intermediate relay ZJ 2, and 3 is time relay sj, and 4 is intermediate relay ZJ 1, and 5 is energy storage motor microswitch, and 6 is ZJ1 contact, and 7 is ZJ2 normal opened contact, and 8 is ZJ2 normally closed contact, and 9 is the time closing contact of SJ.
Detailed description of the invention
Such as Fig. 2, a kind of vacuum circuit breaker energy storage motor protection circuit, include energy storage motor 1, energy storage motor 1 is with 220V DC voltage just, a dc switch 1DK it is connected between negative pole, energy storage motor 1 is parallel with the second auxiliary reclay 2 successively, the time relay 3, first auxiliary reclay 4, energy storage motor 1 is in series with the normal opened contact 6 of the first auxiliary reclay, the normally closed contact 8 of the second auxiliary reclay, second auxiliary reclay is in series with the time closing contact 9 of the time relay, the time closing contact 9 of the time relay is parallel with the normal opened contact 7 of the second auxiliary reclay, the time relay 3 is in series with the normal opened contact 10 of the first auxiliary reclay, first middle relay, 4 are in series with microswitch 5.
Microswitch 5 uses spring energy-storage microswitch.
During spring unstored energy, microswitch 5 is closing position, auxiliary reclay 4 action, then normal opened contact 6,10 Guan Bi of auxiliary reclay 4, makes energy storage motor 1 charging operation, the time relay 3 timing；If microswitch 5 fault, it is in closure state all the time, it is impossible to disconnect energy storage motor 1 power supply so that it is continuous service；But the time relay 3 is after the setting time, its time closing contact 9 closes, and makes auxiliary reclay 2 charged, and utilize its normal opened contact 9 to carry out self-locking, the normally closed contact 8 of auxiliary reclay 2 disconnects, and energy storage motor 1 power-off is out of service, it is to avoid motor the most charged causing damages；It is simultaneously emitted by energy storage motor fault-signal, reminds operator on duty to overhaul energy storage motor loop.
Claims (1)
1. a vacuum circuit breaker energy storage motor protection circuit, include energy storage motor, it is characterized in that: described energy storage motor is with DC voltage just, a dc switch it is connected between negative pole, energy storage motor is parallel with the second auxiliary reclay successively, the time relay, first auxiliary reclay, energy storage motor is in series with the normal opened contact one of the first auxiliary reclay, the normally closed contact of the second auxiliary reclay, second auxiliary reclay is in series with the time closing contact of the time relay, the time closing contact of the time relay is parallel with the normal opened contact of the second auxiliary reclay, the time relay is in series with the normal opened contact two of the first auxiliary reclay, first auxiliary reclay is in series with microswitch；
Described microswitch uses spring energy-storage microswitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283615.5A CN103384059B (en) | 2013-07-08 | 2013-07-08 | A kind of vacuum circuit breaker energy storage motor protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283615.5A CN103384059B (en) | 2013-07-08 | 2013-07-08 | A kind of vacuum circuit breaker energy storage motor protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103384059A CN103384059A (en) | 2013-11-06 |
| CN103384059B true CN103384059B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310283615.5A Expired - Fee Related CN103384059B (en) | 2013-07-08 | 2013-07-08 | A kind of vacuum circuit breaker energy storage motor protection circuit |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300500B (en) * | 2014-09-24 | 2017-04-19 | 国家电网公司 | Control circuit of energy storage motor and control method of control circuit |
| CN104269828B (en) * | 2014-10-27 | 2018-10-30 | 国网江苏省电力公司常州供电公司 | The protective loop of high-voltage circuitbreaker energy storage driving motor |
| CN105551842B (en) * | 2015-12-08 | 2018-08-03 | 国网上海市电力公司 | A kind of method and device preventing breaker energy storage motor failure |
| CN105720557A (en) * | 2016-04-15 | 2016-06-29 | 国网上海市电力公司 | Circuit breaker energy storage motor failure protection device and method for preventing energy storage motor failure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113399Y (en) * | 2007-09-10 | 2008-09-10 | 李焕民 | High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device |
| CN202856319U (en) * | 2012-09-26 | 2013-04-03 | 安徽鑫龙电器股份有限公司 | Protective circuit of circuit breaker energy storage motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000287471A (en) * | 1999-01-27 | 2000-10-13 | Ichikoh Ind Ltd | Motor drive control circuit |
| CN101419885A (en) * | 2008-10-31 | 2009-04-29 | 湖南中通电气有限公司 | Water drainage device for main circuit breaker of railway engine |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113399Y (en) * | 2007-09-10 | 2008-09-10 | 李焕民 | High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device |
| CN202856319U (en) * | 2012-09-26 | 2013-04-03 | 安徽鑫龙电器股份有限公司 | Protective circuit of circuit breaker energy storage motor |
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| CN103384059A (en) | 2013-11-06 |
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Granted publication date: 20160810 Termination date: 20180708 |