CN104269828A - Protective circuit for energy storage driving motor of high-voltage circuit-breaker - Google Patents
Protective circuit for energy storage driving motor of high-voltage circuit-breaker Download PDFInfo
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- CN104269828A CN104269828A CN201410584322.5A CN201410584322A CN104269828A CN 104269828 A CN104269828 A CN 104269828A CN 201410584322 A CN201410584322 A CN 201410584322A CN 104269828 A CN104269828 A CN 104269828A
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- energy storage
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- closed contact
- drive motors
- time relay
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Abstract
The invention provides a protective circuit for an energy storage driving motor of a high-voltage circuit-breaker. The protective circuit comprises an air switch KK, an energy storage limiting normally-closed contact C, an energy storage driving motor M, a background monitoring system and a time relay SJ1, wherein the time relay SJ1 is provided with a time-delayed disconnected normally-closed contact SJ1-1 and a normally-opened contact SJ1-2; one end of the air switch KK is electrically connected with one end of the energy storage limiting normally-closed contact C; the other end of the energy storage limiting normally-closed contact C is collinear with the line terminal of the coil of the time relay SJ1 and one end of the time-delayed disconnected normally-closed contact SJ1-1 of the time relay SJ1; the other end of the time-delayed disconnected normally-closed contact SJ1-1 is electrically connected with one end of the coil of the energy storage driving motor M; the normally-opened contact SJ1-2 of the time relay SJ1 is in signal electric connection with the background monitoring system. According to the invention, the protective circuit can prevent the energy storage driving motor from being burned out, and is simple in structure, easy to carry out, and low in cost.
Description
Technical field
The present invention relates to the protective device of the primary cut-out in electric power system, be specifically related to a kind of protective loop of primary cut-out energy storage drive motors.
Background technology
At present, the operating mechanism of electric power system mesohigh circuit breaker generally adopts the operating mechanism of combined floodgate energy storage.Circuit breaker energy-stored spring when closing a floodgate successfully releases energy automatically, and the energy-stored spring losing energy storage energy needs to re-start energy storage and uses in order to next time.Energy-stored spring again energy storage generally adopts energy storage drive motors.The energy-stored spring of existing primary cut-out is in normal thermal energy storage process, after the fault offset of energy-stored spring, make high-voltage breaker spring energy-storage crank arm touch a spacing contact conducting of installation, the conducting of spacing contact makes energy storage drive motors obtain electrician's work to energy-stored spring energy storage.Energy-stored spring is stretched in thermal energy storage process, and when it is stretched to extreme position, energy storage is full, and now spacing contact disconnects, and energy storage drive motors dead electricity is quit work thus stops energy-stored spring energy storage, also namely this energy-stored spring energy storage terminates.
The stored energy mechanism of current primary cut-out, the capacitor standoff circuit breaker etc. of the capacitor bank of automatic switching is particularly carried out according to idle work optimization, because the reasons such as thunder and lightning can cause circuit that provisional fault frequently occurs, now relaying protection and automatics frequently can carry out the operation of circuit-breaker switching on-off, the frequent operation of circuit-breaker switching on-off can make the stored energy mechanism of circuit breaker break down or exception, the particularly fault of stored energy mechanism and its spacing contact, after causing energy-stored spring energy storage, this spacing contact can not disconnect, spacing contact can not disconnect, and energy storage drive motors will dally always.Energy storage drive motors dallies for a long time and it must be made to burn out.And energy storage drive motors can not carry out energy storage to energy-stored spring after burning out the next combined floodgate of rear circuit breaker again, the normal operation of circuit breaker can be affected and cause equipment power outage.Because energy storage drive motors is arranged on circuit breaker internal usually, change difficulty greatly and comparatively bother.And replacing energy storage drive motors needs to carry out dismounting to the switching mechanism of circuit breaker, easily because misoperation causes new fault to circuit breaker.
Summary of the invention
The object of the invention is: overcome the deficiencies in the prior art, provide a kind of structure simple, easily realize, with low cost and use time can effectively prevent energy storage drive motors from burning out the protective loop of primary cut-out energy storage drive motors.
Technical scheme of the present invention is: the protective loop of primary cut-out energy storage drive motors of the present invention, comprises the air switch KK be arranged in primary cut-out, the spacing normally-closed contact C of energy storage, energy storage drive motors M and is arranged on the background monitoring system of far-end; Its design feature is: also comprise the time relay sj 1 be arranged in primary cut-out;
Described time relay sj 1 has coil, time delay disconnects normally-closed contact SJ1-1 and normally opened contact SJ1-2;
One end of air switch KK is electrically connected with the live wire L of 220V AC power; The other end of air switch KK is electrically connected with one end of the spacing normally-closed contact C of energy storage; The other end of the spacing normally-closed contact C of energy storage and the end of incoming cables of coil of time relay sj 1 and the time delay of time relay sj 1 disconnect one end conllinear of normally-closed contact SJ1-1; The other end that time delay disconnects normally-closed contact SJ1-1 is electrically connected with one end of the coil of energy storage drive motors M; The other end of the leading-out terminal of the coil of time relay sj 1 and the coil of energy storage drive motors M is all electrically connected with the zero line N of 220V AC power; The normally opened contact SJ1-2 of time relay sj 1 is electrically connected with background monitoring system signal.
The present invention has positive effect: the protective loop of (1) primary cut-out energy storage of the present invention drive motors, controlled by the single operating time of setup times relay to energy storage drive motors, automatically the power supply of drive motors is cut off when the work of energy storage drive motors single exceedes setting-up time, thus effectively can prevent the problem that energy storage drive motors is burned because of idle running, fault-signal notice background monitoring system can also be sent immediately simultaneously, staff carries out simple process just energy Power resumption according to fault-signal to the fault such as stored energy mechanism and/or spacing contact, the replacing of complicated energy storage drive motors need not be carried out, thus can exempt from greatly to shorten maintenance time and cost, ensure the reliability of power supply.(2) protective loop of primary cut-out energy storage drive motors of the present invention, structure is simple, easily realize, with low cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Reference numeral in above-mentioned accompanying drawing is as follows:
Air switch KK, the spacing normally-closed contact C of energy storage, time relay sj 1, time delay disconnects normally-closed contact SJ1-1, normally opened contact SJ1-2, energy storage drive motors M.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
(embodiment 1)
See Fig. 1; the protective loop of the primary cut-out energy storage drive motors of the present embodiment, forms primarily of the air switch KK be arranged in primary cut-out, the spacing normally-closed contact C of energy storage, energy storage drive motors M, the background monitoring system being arranged on far-end and the time relay sj 1 be arranged in primary cut-out.
Time relay sj 1 has coil, time delay disconnects normally-closed contact SJ1-1 and normally opened contact SJ1-2.
One end of air switch KK is electrically connected with the live wire L of 220V AC power; The other end of air switch KK is electrically connected with one end of the spacing normally-closed contact C of energy storage; The other end of the spacing normally-closed contact C of energy storage and the end of incoming cables of coil of time relay sj 1 and the time delay of time relay sj 1 disconnect one end conllinear of normally-closed contact SJ1-1; The other end that time delay disconnects normally-closed contact SJ1-1 is electrically connected with one end of the coil of energy storage drive motors M; The other end of the leading-out terminal of the coil of time relay sj 1 and the coil of energy storage drive motors M is all electrically connected with the zero line N of 220V AC power; The normally opened contact SJ1-2 of time relay sj 1 is electrically connected with background monitoring system signal.
The protective loop of the primary cut-out energy storage drive motors of the present embodiment, its operation principle and the course of work are summarized as follows:
After primary cut-out combined floodgate makes spring energy discharge, stored energy mechanism connecting lever resets, spacing normally-closed contact C closes, the now time delay of time relay sj 1 disconnects normally-closed contact SJ1-1 and is in initial turn-on state, the coil of energy storage drive motors M obtains the electric energy storage drive motors M that makes and starts working, and drives energy-stored spring to carry out energy storage.While energy storage drive motors M starts working, time relay sj 1 simultaneously electric and start timing by setting-up time; After energy-stored spring energy storage terminates, after mechanism's connecting lever puts in place, make spacing normally-closed contact C disconnect, make energy storage drive motors M and time relay sj 1 all dead electricity and quitting work; Now energy storage drive motors M is in normal ending status to energy-stored spring energy storage.If because the stored energy mechanism of primary cut-out breaks down, thus cause the spacing normally-closed contact C of energy storage normally not disconnect, now, after the timing time that time relay sj 1 sets arrives, the time delay of time relay sj 1 disconnects normally-closed contact SJ1-1 and can automatically disconnect, thus makes the stall of energy storage drive motors M dead electricity.And time relay sj 1 self-sustaining makes energy storage drive motors be in power failure state always, thus reach the object of protection energy storage drive motors M.Simultaneously when the timing time that time relay sj 1 sets arrives, the normally opened contact SJ1-2 adhesive of time relay sj 1, thus fault-signal is sent to background monitoring system, notify that staff carries out troubleshooting to this circuit breaker.
To sum up, the protective loop of the primary cut-out energy storage drive motors of the present embodiment, controlled by the single operating time of setup times relay to energy storage drive motors, automatically the power supply of drive motors is cut off when the work of energy storage drive motors single exceedes setting-up time, thus effectively can prevent the problem that energy storage drive motors is burned because of idle running, fault-signal notice background monitoring system can also be sent immediately simultaneously, staff carries out simple process just energy Power resumption according to fault-signal to the fault such as stored energy mechanism and/or spacing contact, the replacing of complicated energy storage drive motors need not be carried out, thus can greatly shorten maintenance time and cost, ensure the reliability of power supply, and the protective loop of the primary cut-out energy storage drive motors of the present embodiment, structure is simple, easily realize, with low cost.
Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present invention.
Claims (1)
1. a protective loop for primary cut-out energy storage drive motors, comprises the air switch KK be arranged in primary cut-out, the spacing normally-closed contact C of energy storage, energy storage drive motors M and is arranged on the background monitoring system of far-end; It is characterized in that: also comprise the time relay sj 1 be arranged in primary cut-out;
Described time relay sj 1 has coil, time delay disconnects normally-closed contact SJ1-1 and normally opened contact SJ1-2;
One end of air switch KK is electrically connected with the live wire L of 220V AC power; The other end of air switch KK is electrically connected with one end of the spacing normally-closed contact C of energy storage; The other end of the spacing normally-closed contact C of energy storage and the end of incoming cables of coil of time relay sj 1 and the time delay of time relay sj 1 disconnect one end conllinear of normally-closed contact SJ1-1; The other end that time delay disconnects normally-closed contact SJ1-1 is electrically connected with one end of the coil of energy storage drive motors M; The other end of the leading-out terminal of the coil of time relay sj 1 and the coil of energy storage drive motors M is all electrically connected with the zero line N of 220V AC power; The normally opened contact SJ1-2 of time relay sj 1 is electrically connected with background monitoring system signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584322.5A CN104269828B (en) | 2014-10-27 | 2014-10-27 | The protective loop of high-voltage circuitbreaker energy storage driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584322.5A CN104269828B (en) | 2014-10-27 | 2014-10-27 | The protective loop of high-voltage circuitbreaker energy storage driving motor |
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| Publication Number | Publication Date |
|---|---|
| CN104269828A true CN104269828A (en) | 2015-01-07 |
| CN104269828B CN104269828B (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410584322.5A Active CN104269828B (en) | 2014-10-27 | 2014-10-27 | The protective loop of high-voltage circuitbreaker energy storage driving motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788612U (en) * | 2010-08-06 | 2011-04-06 | 北京市电力公司 | Relay protection practicing platform and analog energy storage loop thereof |
| CN202712093U (en) * | 2012-08-14 | 2013-01-30 | 王淑军 | Automatic switching-on device for universal circuit breaker |
| 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 |
| CN103384059A (en) * | 2013-07-08 | 2013-11-06 | 中国科学院等离子体物理研究所 | Vacuum circuit breaker energy storage motor protection circuit |
| CN204156505U (en) * | 2014-10-27 | 2015-02-11 | 江苏省电力公司常州供电公司 | A kind of protective loop of primary cut-out energy storage drive motors |
-
2014
- 2014-10-27 CN CN201410584322.5A patent/CN104269828B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788612U (en) * | 2010-08-06 | 2011-04-06 | 北京市电力公司 | Relay protection practicing platform and analog energy storage loop thereof |
| CN202712093U (en) * | 2012-08-14 | 2013-01-30 | 王淑军 | Automatic switching-on device for universal circuit breaker |
| 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 |
| CN103384059A (en) * | 2013-07-08 | 2013-11-06 | 中国科学院等离子体物理研究所 | Vacuum circuit breaker energy storage motor protection circuit |
| CN204156505U (en) * | 2014-10-27 | 2015-02-11 | 江苏省电力公司常州供电公司 | A kind of protective loop of primary cut-out energy storage drive motors |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN104269828B (en) | 2018-10-30 |
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Address after: 213003 No. 27, West Front Street, Changzhou, Jiangsu Applicant after: State Grid Jiangsu Electric Power Company, Changzhou Power Supply Company Applicant after: STATE GRID JIANGSU ELECTRIC POWER COMPANY Applicant after: State Grid Corporation of China Address before: 213003 Jiangsu province Changzhou City Tianning District Bureau Street No. 27 Applicant before: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. Applicant before: Jiangsu Electric Power Company Applicant before: State Grid Corporation of China |
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