CN103384059A - Vacuum circuit breaker energy storage motor protection circuit - Google Patents
Vacuum circuit breaker energy storage motor protection circuit Download PDFInfo
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- CN103384059A CN103384059A CN2013102836155A CN201310283615A CN103384059A CN 103384059 A CN103384059 A CN 103384059A CN 2013102836155 A CN2013102836155 A CN 2013102836155A CN 201310283615 A CN201310283615 A CN 201310283615A CN 103384059 A CN103384059 A CN 103384059A
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Abstract
The invention discloses a vacuum circuit breaker energy storage motor protection circuit which comprises an energy storage motor. A direct-current switch is connected between the energy storage motor and a positive electrode of direct-current voltage, another direct-current switch is connected between the energy storage motor and a negative electrode of the direct-current voltage, the energy storage motor is sequentially parallelly connected with a second intermediate relay, a time relay and a first intermediate relay and serially connected with a first normally open contact of the first intermediate relay and a normally closed contact of the second intermediate relay, the second intermediate relay is serially connected with a time delay closing contact of the time relay, the time delay closing contact of the time relay is parallelly connected with a normally open contact of the second intermediate relay, the time relay is serially connected with a second normally open contact of the first intermediate relay, and the first intermediate relay is serially connected with a microswitch. Circuit reliability of the energy storage motor is improved, the accident of damage to the energy storage motor due to the failure can be reduced, and a medium-voltage distribution system is more reliable in operation.
Description
Technical field
The invention belongs to the intermediate distribution system field, be specifically related to a kind of vacuum circuit-breaker energy storage motor protective circuit, for the reliable row for the national games of distribution system vacuum circuit-breaker peace provides safeguard.
Background technology
In the medium-voltage distribution field, the operation of vacuum circuit-breaker energy storage motor and stopping mainly relying on the sensitive switch of stored energy mechanism to control.Under normal circumstances, not during energy storage, sensitive switch junction closure, energy storage motor operation; Otherwise the sensitive switch contact disconnects, and energy storage motor is out of service.But in actual motion, occur sometimes because of the sensitive switch fault, the contact of sensitive switch can not disconnect the energy storage motor circuit, causes the energy storage motor long time running, this long time running can cause the motor damage, causes the power transmission of can not in time closing a floodgate of distribution system.Therefore need a kind of to energy storage motor running protection circuit.
Intermediate distribution system vacuum circuit-breaker energy storage motor protection loop such as Fig. 1 of using at present, spring be during energy storage, and sensitive switch 5 is in co-bit, energy storage motor 1 charging operation.If during sensitive switch 5 fault, be in closure state always, energy storage motor 1 will be in the charging operation state for a long time, can't automatic cut-off power.
Summary of the invention
The purpose of this invention is to provide a kind of vacuum circuit-breaker energy storage motor protective circuit; the running time of limiting motor; automatically excise the power supply of motor after surpassing setting-up time; the pressure energy storage motor is out of service; avoid the motor long-play to cause the fault of damaging, make the operation of intermediate distribution system more reliable.
The present invention is achieved in that
a kind of vacuum circuit-breaker energy storage motor protective circuit, include energy storage motor, it is characterized in that: described energy storage motor and direct voltage are just, be connected with respectively a dc switch between negative pole, energy storage motor is parallel with the second auxiliary relay successively, the time relay, the first auxiliary relay, energy storage motor is in series with the normal opened contact one of the first auxiliary relay, the normally closed contact of the second auxiliary relay, the second auxiliary relay 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 relay, the time relay is in series with the normal opened contact two of the first auxiliary relay, the first auxiliary relay is in series with sensitive switch.
Described a kind of vacuum circuit-breaker energy storage motor protective circuit is characterized in that: described sensitive switch adopts the spring energy-storage sensitive switch.
When energy storage motor brought into operation energy storage, the triggered time relay began timing simultaneously; If the spring energy-storage sensitive switch is in closure state all the time, can not disconnect the energy storage motor circuit; The time relay will after delaying time through setting-up time, by the normally closed contact disconnection energy storage motor circuit of the second auxiliary relay, thereby reach the restriction energy storage motor purpose of running time.
The invention has the beneficial effects as follows:
The present invention has improved the energy storage motor circuit reliability, can reduce this type of fault and cause the energy storage motor damage accident, makes the operation of intermediate distribution system more reliable.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is existing energy storage motor protective circuit schematic diagram.
Fig. 2 is energy storage motor protective circuit schematic diagram of the present invention.
Number in the figure:
1 is energy storage motor, and 2 is that intermediate relay ZJ 2,3 is time relay sj, and 4 is that intermediate relay ZJ 1,5 is the energy storage motor sensitive switch, and 6 is the ZJ1 contact, and 7 is the ZJ2 normal opened contact, and 8 is the ZJ2 normally closed contact, and 9 is the time closing contact of SJ.
Embodiment
as Fig. 2, a kind of vacuum circuit-breaker energy storage motor protective circuit, include energy storage motor 1, energy storage motor 1 and 220V direct voltage are just, be connected with respectively a dc switch 1DK between negative pole, energy storage motor 1 is parallel with the second auxiliary relay 2 successively, the time relay 3, the first auxiliary relay 4, energy storage motor 1 is in series with the normal opened contact 6 of the first auxiliary relay, the normally closed contact 8 of the second auxiliary relay, the second auxiliary relay 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 relay, the time relay 3 is in series with the normal opened contact 10 of the first auxiliary relay, relay in the middle of first, 4 are in series with sensitive switch 5.
Spring is during energy storage, and sensitive switch 5 is in co-bit, auxiliary relay 4 actions, and the normal opened contact 6 of auxiliary relay 4,10 closures, make energy storage motor 1 charging operation, the time relay 3 timing; If sensitive switch 5 faults are in closure state all the time, can not disconnect energy storage motor 1 power supply, make its continuous service; But the time relay 3 is through after setting-up time, and its time closing contact 9 closures make auxiliary relay 2 charged, and utilize its normal opened contact 9 to carry out self-locking, the normally closed contact 8 of auxiliary relay 2 disconnects, and energy storage motor 1 outage is out of service, avoids long-term charged causing of motor to damage; Send simultaneously the energy storage motor fault-signal, remind the operator on duty to overhaul the energy storage motor loop.
Claims (2)
1. vacuum circuit-breaker energy storage motor protective circuit, include energy storage motor, it is characterized in that: described energy storage motor and direct voltage are just, be connected with respectively a dc switch between negative pole, energy storage motor is parallel with the second auxiliary relay successively, the time relay, the first auxiliary relay, energy storage motor is in series with the normal opened contact one of the first auxiliary relay, the normally closed contact of the second auxiliary relay, the second auxiliary relay 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 relay, the time relay is in series with the normal opened contact two of the first auxiliary relay, the first auxiliary relay is in series with sensitive switch.
2. a kind of vacuum circuit-breaker energy storage motor protective circuit according to claim 1, is characterized in that: described sensitive switch employing spring energy-storage sensitive switch.
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 true CN103384059A (en) | 2013-11-06 |
| CN103384059B CN103384059B (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310283615.5A Expired - Fee Related CN103384059B (en) | 2013-07-08 | 2013-07-08 | A kind of vacuum circuit breaker energy storage motor protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN103384059B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269828A (en) * | 2014-10-27 | 2015-01-07 | 江苏省电力公司常州供电公司 | Protective circuit for energy storage driving motor of high-voltage circuit-breaker |
| CN104300500A (en) * | 2014-09-24 | 2015-01-21 | 国家电网公司 | Control circuit of energy storage motor and control method of control circuit |
| CN105551842A (en) * | 2015-12-08 | 2016-05-04 | 国网上海市电力公司 | Method and device for preventing failure of circuit breaker energy storage motor |
| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000287471A (en) * | 1999-01-27 | 2000-10-13 | Ichikoh Ind Ltd | Motor drive control circuit |
| 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 |
| 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 |
| 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 |
-
2013
- 2013-07-08 CN CN201310283615.5A patent/CN103384059B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000287471A (en) * | 1999-01-27 | 2000-10-13 | Ichikoh Ind Ltd | Motor drive control circuit |
| 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 |
| 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 |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300500A (en) * | 2014-09-24 | 2015-01-21 | 国家电网公司 | Control circuit of energy storage motor and control method of control circuit |
| 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 |
| CN104269828A (en) * | 2014-10-27 | 2015-01-07 | 江苏省电力公司常州供电公司 | Protective circuit for energy storage driving motor of high-voltage circuit-breaker |
| 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 |
| CN105551842A (en) * | 2015-12-08 | 2016-05-04 | 国网上海市电力公司 | Method and device for preventing failure of circuit breaker energy storage motor |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103384059B (en) | 2016-08-10 |
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Granted publication date: 20160810 Termination date: 20180708 |
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