CN203278385U - Control locking loop used for automatic switch protection apparatus of high voltage power distribution system - Google Patents
Control locking loop used for automatic switch protection apparatus of high voltage power distribution system Download PDFInfo
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- CN203278385U CN203278385U CN 201320297402 CN201320297402U CN203278385U CN 203278385 U CN203278385 U CN 203278385U CN 201320297402 CN201320297402 CN 201320297402 CN 201320297402 U CN201320297402 U CN 201320297402U CN 203278385 U CN203278385 U CN 203278385U
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Abstract
A control locking loop used for an automatic switch protection apparatus of a high voltage power distribution system comprises a tripping input loop, a closing input loop, a circuit breaker pressure locking jump closing loop and a circuit breaker mechanism spring non-energy-storage locking closing loop. The tripping input loop and the closing input loop are mutually connected in parallel and then form two terminal points. One terminal point is connected with a terminal X1 through a five-prevention locking switch and the other point is connected with a terminal X2. The circuit breaker pressure locking jump closing loop and the circuit breaker mechanism spring non-energy-storage locking closing loop are mutually connected in parallel and then form two terminal points which are connected with the terminal X1 and the terminal X2 respectively. The loop provided in the utility model can effectively realize the locking under the condition that the circuit breaker does not allow the tripping and the closing. Explosion of the circuit breaker caused by a reason of the circuit breaker itself is prevented so that an accident scope is not enlarged. Safe and stable operation of an electric power system is guaranteed.
Description
Technical field
The utility model belongs to electric equipment automatic control technology field, particularly relates to a kind of control locked loop of hauling oneself willingly into protective device for the high-tension electricity distribution system.
Background technology
Fig. 1 is the primary connection figure of certain transformer station's high-pressure side internal bridge mode.
Fig. 2 is in above-mentioned transformer station, the primary connection figure of the low-pressure side mode of connection (take 35kV first chamber as example).
As shown in Figure 1, certain power station 220kV side joint line mode is internal bridge.Automatic bus possesses with no pressure and identifies function, and tripping high voltage side lead-in (2211 or 2212) switch after source really is without electricity drops into 2245 bus connection switches, in assurance, low-pressure side powers continuously.At this moment in, the low-pressure side automatic bus is failure to actuate.
In, low-pressure side respectively has two bus connection switches, amounts to the quadruplet automatic bus, automatic bus is hauled oneself willingly into for closing contact.As long as one is subjected to master switch (301 first or 302 first) tripping operation, drop into bus connection switch (345 first) through time-delay, guarantee user's continuous power supply.(as shown in Figure 2, take 35kV first chamber as example)
At present; after this transformer station changes the 220kV service entrance switch; protective device is hauled oneself willingly in the high-pressure side out of service; the high-pressure side is in the situation that source nothing electricity; medium voltage side, low-pressure side are hauled oneself willingly into and are protected and akinesia; on mesolow side whole piece bus, all outlets all lose voltage thereby make, and have caused the power failure to the user, therefore can't satisfy the system operation mode requirement.So proposing more, the southern PSP-691 that produces from factory of transducer set state's electricity hauls oneself willingly into protective device.For control loop after hauling oneself willingly into protective device and changing imperfect (circuit breaker in the situation that SF6 pressure anomaly or spring not energy storage can not the locking circuit breaker jump close) problem; we change control loop; thereby complete control loop has strengthened the reliability of hauling oneself willingly into the protective device action.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of control locked loop of hauling oneself willingly into protective device for the high-tension electricity distribution system.
In order to achieve the above object, the utility model provides is used for the high-tension electricity distribution system and hauls oneself willingly into the control locked loop of protective device and comprise: tripping operation input circuit A, combined floodgate input circuit B, circuit breaker pressure atresia closing loop C and breaker mechanism spring be energy storage locking closing circuit D not; Wherein: tripping operation input circuit A and combined floodgate input circuit B rear formed two end points parallel with one another, one is connected with terminal X1 by five-defence block switch 1WF, and another is connected with terminal X2; Circuit breaker pressure atresia closing loop C and breaker mechanism spring be energy storage locking closing circuit D rear formed two end points parallel with one another not, are connected with terminal X1, X2 respectively; Fuse 1RD one end is connected with terminal X1, and the other end is connected with dc bus+KM, and fuse 2RD one end is connected with terminal X2, and the other end is connected with dc bus-KM;
Tripping operation input circuit A is the tripping operation control loop of circuit breaker, and it jumps relay normally open contact STJ, the auxiliary normal opened contact DL1 of circuit breaker and circuit breaker trip coil TQ connect successively rear formed branch road and terminal 3, terminal 4, SF6 pressure decreased quiescing normally closed contact 1YJ by change over switch 1KK by: hand
1, hand jumps relay coil STJ and resistor R
1Successively the series connection after formed branch road be in parallel form;
Combined floodgate input circuit B is the combined floodgate control loop of circuit breaker, and its terminal 1 by change over switch 1KK, terminal 2, spring be energy storage normally closed contact 1ZJ, circuit breaker pressure decreased quiescing normally closed contact 1YJ not
2, the auxiliary normally closed contact DL of circuit breaker
2With breaker closing coil HQ connect successively form;
Circuit breaker pressure atresia closing loop by auxiliary relay winding 1ZJ and breaker spring not the energy storage normally opened contact DT institute that is in series form;
Breaker mechanism spring not energy storage locking closing circuit D is not energy storage protection of spring, and it is comprised of auxiliary relay coil 1YJ and the circuit breaker pressure abnormity locking normal opened contact NMWK institute that is in series.
Described normally closed contact 1ZJ, 1YJ
1, 1YJ
2And normal opened contact DT, NMZK are the contact that circuit breaker inside has.
Described circuit breaker is 35KV SF6 circuit breaker.
The control loop of hauling oneself willingly into protective device that is used for the high-tension electricity distribution system that the utility model provides has been realized following functions: at first when circuit breaker SF6 pressure decreased does not allow the circuit breaker jumping to close to setting, guarantee SF6 pressure decreased quiescing normally closed contact 1YJ
1, circuit breaker pressure decreased quiescing normally closed contact 1YJ
2Open, reliably disconnect trip(ping) circuit and the closing circuit of control loop, guarantee that effectively circuit breaker reliably realizes locking in SF6 pressure anomaly situation; Secondly when spring mechanism of circuit breaker causes not energy storage not allow breaker mechanism to close a floodgate for a certain reason, guarantee SF6 pressure decreased quiescing normally closed contact 1YJ
1Open, reliably disconnect the closing circuit of control loop, guarantee that effectively circuit breaker reliably realizes locking in not energy storage situation of spring.This control loop, has prevented from causing the circuit breaker blast due to the reason of circuit breaker itself in the situation that circuit breaker does not allow breaker tripping and closing effectively to realize locking through after improving, and makes the accident expanded range, thereby guarantees the safe and stable operation of electric power system.
Description of drawings
Fig. 1 is the primary connection figure of certain transformer station's high-pressure side internal bridge mode.
Fig. 2 is in above-mentioned transformer station, the primary connection figure of the low-pressure side mode of connection (take the first chamber as example).
Fig. 3 is used for for what the utility model provided the control locked loop figure that the high-tension electricity distribution system is hauled oneself willingly into protective device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the high-tension electricity distribution system that is used for that the utility model provides is hauled oneself willingly into the control locked loop of protective device and is elaborated.
As shown in Figure 3, the utility model provides is used for the high-tension electricity distribution system and hauls oneself willingly into the control locked loop of protective device and comprise: tripping operation input circuit A, combined floodgate input circuit B, circuit breaker pressure atresia closing loop C and breaker mechanism spring be energy storage locking closing circuit D not; Wherein: tripping operation input circuit A and combined floodgate input circuit B rear formed two end points parallel with one another, one is connected with terminal X1 by five-defence block switch 1WF, and another is connected with terminal X2; Circuit breaker pressure atresia closing loop C and breaker mechanism spring be energy storage locking closing circuit D rear formed two end points parallel with one another not, are connected with terminal X1, X2 respectively; Fuse 1RD one end is connected with terminal X1, and the other end is connected with dc bus+KM, and fuse 2RD one end is connected with terminal X2, and the other end is connected with dc bus-KM;
Tripping operation input circuit A is the tripping operation control loop of circuit breaker, and it jumps relay normally open contact STJ, the auxiliary normal opened contact DL1 of circuit breaker and circuit breaker trip coil TQ connect successively rear formed branch road and terminal 3, terminal 4, SF6 pressure decreased quiescing normally closed contact 1YJ by change over switch 1KK by: hand
1, hand jump relay coil STJ and resistor R1 connect successively rear formed branch road be in parallel form;
Combined floodgate input circuit B is the combined floodgate control loop of circuit breaker, and its terminal 1 by change over switch 1KK, terminal 2, spring be energy storage normally closed contact 1ZJ, circuit breaker pressure decreased quiescing normally closed contact 1YJ not
2, the auxiliary normally closed contact DL of circuit breaker
2With breaker closing coil HQ connect successively form;
Circuit breaker pressure atresia closing loop C is used for when the circuit breaker pressure decreased during to the pressure definite value stipulated, not allowing circuit breaker to jump closes, avoiding causing circuit breaker failure, its by auxiliary relay winding 1ZJ and breaker spring not the energy storage normally opened contact DT institute that is in series form;
Breaker mechanism spring not energy storage locking closing circuit D is not energy storage protection of spring, and it is comprised of auxiliary relay coil 1YJ and the circuit breaker pressure abnormity locking normal opened contact NMWK institute that is in series; Because circuit breaker is spring mechanism, not during energy storage, must forbid breaker closing when spring.
Described normally closed contact 1ZJ, 1YJ
1, 1YJ
2And normal opened contact DT, NMZK are the contact that circuit breaker inside has.
Described circuit breaker is 35KV SF6 circuit breaker.
The utility model provides is used for the high-tension electricity distribution system to haul oneself willingly into the course of work of control locked loop of protective device as follows:
Because motor power disappears or motor damages, causing spring mechanism not during energy storage when SF6 circuit breaker medi-spring mechanism--＞normal opened contact DT is closed--＞coil 1ZJ action--＞normally closed contact 1ZJ opens--＞combined floodgate input circuit B disconnections--＞realize the locking combined floodgate.
--closed--＞coil 1YJ action--＞normally closed contact 1YJ of＞normal opened contact NMWK when SF6 circuit breaker pressure decreased does not allow deciliter circuit breaker to the locking value
1Open--＞realize locking tripping operation; While normally closed contact 1YJ
2Open--＞realize that locking closes a floodgate.
Claims (3)
1. one kind is used for the control locked loop that the high-tension electricity distribution system is hauled oneself willingly into protective device, it is characterized in that: the described control locked loop of hauling oneself willingly into protective device for the high-tension electricity distribution system comprises: tripping operation input circuit A, combined floodgate input circuit B, circuit breaker pressure atresia closing loop C and breaker mechanism spring be energy storage locking closing circuit D not; Wherein: tripping operation input circuit A and combined floodgate input circuit B rear formed two end points parallel with one another, one is connected with terminal X1 by five-defence block switch 1WF, and another is connected with terminal X2; Circuit breaker pressure atresia closing loop C and breaker mechanism spring be energy storage locking closing circuit D rear formed two end points parallel with one another not, are connected with terminal X1, X2 respectively; Fuse 1RD one end is connected with terminal X1, and the other end is connected with dc bus+KM, and fuse 2RD one end is connected with terminal X2, and the other end is connected with dc bus-KM;
Tripping operation input circuit A is the tripping operation control loop of circuit breaker, and it jumps relay normally open contact STJ, the auxiliary normal opened contact DL1 of circuit breaker and circuit breaker trip coil TQ connect successively rear formed branch road and terminal 3, terminal 4, SF6 pressure decreased quiescing normally closed contact 1YJ by change over switch 1KK by: hand
1, hand jump relay coil STJ and resistor R1 connect successively rear formed branch road be in parallel form;
Combined floodgate input circuit B is the combined floodgate control loop of circuit breaker, and its terminal 1 by change over switch 1KK, terminal 2, spring be energy storage normally closed contact 1ZJ, circuit breaker pressure decreased quiescing normally closed contact 1YJ not
2, the auxiliary normally closed contact DL of circuit breaker
2With breaker closing coil HQ connect successively form;
Circuit breaker pressure atresia closing loop by auxiliary relay winding 1ZJ and breaker spring not the energy storage normally opened contact DT institute that is in series form;
Breaker mechanism spring not energy storage locking closing circuit D is not energy storage protection of spring, and it is comprised of auxiliary relay coil 1YJ and the circuit breaker pressure abnormity locking normal opened contact NMWK institute that is in series.
2. the control locked loop of hauling oneself willingly into protective device for the high-tension electricity distribution system according to claim 1, is characterized in that: described normally closed contact 1ZJ, 1YJ
1, 1YJ
2And normal opened contact DT, NMZK are the contact that circuit breaker inside has.
3. the control locked loop of hauling oneself willingly into protective device for the high-tension electricity distribution system according to claim 1, it is characterized in that: described circuit breaker is 35KV SF6 circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297402 CN203278385U (en) | 2013-05-28 | 2013-05-28 | Control locking loop used for automatic switch protection apparatus of high voltage power distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297402 CN203278385U (en) | 2013-05-28 | 2013-05-28 | Control locking loop used for automatic switch protection apparatus of high voltage power distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278385U true CN203278385U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320297402 Expired - Lifetime CN203278385U (en) | 2013-05-28 | 2013-05-28 | Control locking loop used for automatic switch protection apparatus of high voltage power distribution system |
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| CN (1) | CN203278385U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701821A (en) * | 2015-03-20 | 2015-06-10 | 山东钢铁股份有限公司 | SF6 circuit breaker monitoring system |
| CN107093925A (en) * | 2017-06-26 | 2017-08-25 | 国网辽宁省电力有限公司抚顺供电公司 | Prevent the uninterrupted inverter that is delayed of SF6 breaker not energy storage |
| CN111463756A (en) * | 2020-05-07 | 2020-07-28 | 华电电力科学研究院有限公司 | Protection locking joint optimization method based on high-service bus protection and fast switching device |
-
2013
- 2013-05-28 CN CN 201320297402 patent/CN203278385U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701821A (en) * | 2015-03-20 | 2015-06-10 | 山东钢铁股份有限公司 | SF6 circuit breaker monitoring system |
| CN104701821B (en) * | 2015-03-20 | 2018-05-01 | 山东钢铁股份有限公司 | A kind of SF6Breaker monitors system |
| CN107093925A (en) * | 2017-06-26 | 2017-08-25 | 国网辽宁省电力有限公司抚顺供电公司 | Prevent the uninterrupted inverter that is delayed of SF6 breaker not energy storage |
| CN107093925B (en) * | 2017-06-26 | 2020-03-24 | 国网辽宁省电力有限公司抚顺供电公司 | Delay uninterrupted inverter for preventing SF6 circuit breaker from energy storage |
| CN111463756A (en) * | 2020-05-07 | 2020-07-28 | 华电电力科学研究院有限公司 | Protection locking joint optimization method based on high-service bus protection and fast switching device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
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| CX01 | Expiry of patent term |