CN103545795A - Breaker tripping protector - Google Patents
Breaker tripping protector Download PDFInfo
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- CN103545795A CN103545795A CN201310451581.6A CN201310451581A CN103545795A CN 103545795 A CN103545795 A CN 103545795A CN 201310451581 A CN201310451581 A CN 201310451581A CN 103545795 A CN103545795 A CN 103545795A
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- relay
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- time relay
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Abstract
The invention discloses a breaker tripping protector which comprises a shell provided with four wiring terminals. A intermediate relay and a time relay are disposed in the shell. The intermediate relay comprises a normally-open contact. The time relay comprises a normally-open contact and a normally-closed contact. The breaker tripping protector has the advantages that the time relay and the intermediate relay are disposed at the circuit of a tripping coil, the over-voltage delay, retaining circuit is formed, when the tripping coil is electrified for a long time, faults such as auxiliary contact disconnection failure and breaker tripping failure occur, and the KT action setting time of the time relay is reached, the normally-open contact of the delay time relay is closed, the coil of the intermediate relay of the protector takes power for action, the tripping circuit is locked, disconnected, and retained, burning of the tripping coil can be avoided, and stability of power grid safety operation is increased greatly.
Description
Technical field
The present invention relates to a kind of protector, relate in particular to a kind of breaker open operation protector.
Background technology
Switching winding is as a kind of instantaneous operation element; be in operation often can be because of aspects such as brake separating mechanism, auxiliary contact or control loops former thereby long charged; burn switching winding; especially the circuit breaker of frequent operation more easily occurs, and brings very adverse influence to the safe and stable operation of electrical network.
As shown in Figure 1; in existing line; switching winding TQ one end connects power supply-KM end; one end of other end connecting breaker auxiliary contact DL; described power supply end-KM and+KM end is connected with respectively protection electric fuse 2FU and 1FU; in figure, resistance R 1, R2 are proportion resistor; at circuit breaker during in closing position; 13,16 contacts of joystick KK are in on-state; circuit breaker auxiliary contact DL make position; red light RD is bright, now in switching winding TQ, only has a little electric current to flow through, and TQ is failure to actuate.When circuit breaker outer protection loop action separating brake or while carrying out sub-switching operation; supply voltage is by 6,7 contacts of protection loop or KK; through anti-trip relay TBJ, circuit breaker auxiliary contact DL, as auxiliary contact DL, break not open or the breaker open operation fault such as unsuccessfully; switching winding TQ can obtain continuing large electric current; thereby burnt, and then affected the safety of circuit breaker work and electrical network.
Summary of the invention
The object of this invention is to provide a kind of breaker open operation protector, the switching winding of protective circuit breaker, makes power network safety operation effectively.
The present invention adopts following technical proposals:
A kind of breaker open operation protector, comprise housing, on housing, be provided with four terminals, in housing, be provided with auxiliary relay and the time relay, described auxiliary relay comprises a normally opened contact, the described time relay comprises a normally opened contact and a normally-closed contact, the coil of described auxiliary relay is connected on for being connected between first terminals and the second terminals of power end with the normally opened contact of the time relay, the normally-closed contact of described auxiliary relay is connected between the 3rd terminals and the 4th terminals for connecting breaker sub-gate circuit, the normally opened contact of auxiliary relay is connected in parallel on the two ends of time relay normally opened contact, described time relay coil is connected between the second binding post and the 3rd terminals.
Described housing is that refractory material is made.
The present invention is simple in structure; by at loop, switching winding place setup times relay and auxiliary relay; thereby what form has superpressure time delay, a holding circuit; it is long charged that thereby switching winding is worked as in realization; as auxiliary contact breaks not open or the breaker open operation fault such as unsuccessfully; and while reaching time relay KT action setting time; time delay relay normally opened contact is closed; thereby the coil of the auxiliary relay of protector obtains electric action; locking also disconnects sub-gate circuit; and energy self-sustaining, thereby avoided switching winding to be burnt.Greatly improved the stability of electric power netting safe running.
Accompanying drawing explanation
Fig. 1 is brake division loop of circuit breaker electrical schematic diagram;
Fig. 2 is that the present invention installs and uses electrical schematic diagram.
Embodiment
As shown in Figure 2, a kind of breaker open operation protector, comprise housing 5, on housing 5, be provided with four terminals, in housing 5, be provided with auxiliary relay KA and time relay KT, described time relay KT comprises a normally opened contact KT1, described auxiliary relay KA comprises a normally opened contact KA1 and a normally-closed contact KA2, the coil of described auxiliary relay KA is connected on for being connected between first terminals 1 and the second terminals 2 of power end with the normally opened contact KT1 of time relay KT, the normally-closed contact KA2 of described auxiliary relay KA is connected between the 3rd terminals 3 and the 4th terminals 4 for connecting breaker sub-gate circuit, the normally opened contact KA1 of auxiliary relay KA is connected in parallel on the two ends of time relay normally opened contact KT1, the coil of described time relay KT is connected between the second binding post 2 and the 3rd terminals 4.
Described housing 5 is made for refractory material, can prevent that the present invention is at fire etc.Described power supply end-KM and+KM end is connected with respectively protection electric fuse 2FU and 1FU, in figure, resistance R 1, R2 are proportion resistor, for regulation voltage ratio, are existing parts, operation principle is not repeated.
During installation, as shown in Figure 2, the first terminals 1 connect power supply anode+KM, the second line end 2 connects power supply negative terminal-KM, the 3rd binding post 3 and the 4th binding post 4 are connected between switching winding TQ and circuit breaker auxiliary contact DL, during work, at circuit breaker during in closing position, 13 of joystick KK, 16 contacts are in on-state, DL is in the close position for circuit breaker auxiliary contact, red light RD is luminous, now in switching winding TQ, there is a little electric current to flow through, deficiency is so that TQ action, because now TQ both end voltage is lower, the time relay KT of protector can not move, separating brake protector is not worked, brake division loop of circuit breaker is had no effect.When circuit breaker outer protection loop action separating brake or while carrying out sub-switching operation, supply voltage is by 6,7 contacts of protection loop or KK, auxiliary relay normally closed contact KA2 through anti-trip relay TBJ, circuit breaker auxiliary contact DL, protector is concatenated into switching winding TQ two ends, and makes it to move separating brake; Simultaneously; separating brake protector is started working; the supply voltage that is added to TQ two ends makes the time relay KT of protector start time delay; within the scope of the setting time of KT; if the normal separating brake of circuit breaker (opening time is about 0.06 ~ 0.12s), auxiliary contact DL reliably disconnects, the coil losing electricity of time relay KT; stop timing, switching winding protective circuit is failure to actuate.Otherwise; once switching winding TQ is long charged; as auxiliary contact DL breaks not open or the breaker open operation fault such as unsuccessfully; when reaching time relay KT action setting time; time delay relay normally opened contact KT1 is closed, thereby the coil of the auxiliary relay KA of protector obtains electric action, and normally opened contact KA1 closure and the normally-closed contact KA2 of locking auxiliary relay disconnect sub-gate circuit; and self-sustaining, thereby avoided switching winding to be burnt.Meanwhile, KT dead electricity, contact KT disconnects.
The present invention is simple in structure, practical, cheap, easy-to-connect, safe and reliable, be convenient to promote.
Claims (2)
1. a breaker open operation protector, comprise housing, on housing, be provided with four terminals, it is characterized in that: in housing, be provided with auxiliary relay and the time relay, described auxiliary relay comprises a normally opened contact, the described time relay comprises a normally opened contact and a normally-closed contact, the coil of described auxiliary relay is connected on for being connected between first terminals and the second terminals of power end with the normally opened contact of the time relay, the normally-closed contact of described auxiliary relay is connected between the 3rd terminals and the 4th terminals for connecting breaker sub-gate circuit, the normally opened contact of auxiliary relay is connected in parallel on the two ends of time relay normally opened contact, described time relay coil is connected between the second binding post and the 3rd terminals.
2. breaker open operation protector according to claim 1, is characterized in that: described housing is that refractory material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451581.6A CN103545795A (en) | 2013-09-29 | 2013-09-29 | Breaker tripping protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451581.6A CN103545795A (en) | 2013-09-29 | 2013-09-29 | Breaker tripping protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103545795A true CN103545795A (en) | 2014-01-29 |
Family
ID=49968987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310451581.6A Pending CN103545795A (en) | 2013-09-29 | 2013-09-29 | Breaker tripping protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103545795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019137A (en) * | 2016-07-19 | 2016-10-12 | 南宏电力科技有限公司 | Switch state detecting circuit of protective relaying device |
| CN107045896A (en) * | 2016-02-05 | 2017-08-15 | 中国船舶重工集团公司第七�三研究所 | A kind of controllable energy storage device of order and energy storage method |
Citations (5)
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|---|---|---|---|---|
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | Circuit breaker opening and closing coil protection device |
| CN202363976U (en) * | 2011-12-06 | 2012-08-01 | 广东先达电业股份有限公司 | Transformer substation comprehensive automatic breaker control loop with burning-out proof function |
| CN202535044U (en) * | 2012-04-11 | 2012-11-14 | 济南市历城区供电公司 | Breaker switching-on and tripping control circuit |
| CN202616135U (en) * | 2012-06-14 | 2012-12-19 | 福建省电力有限公司泉州电业局 | Opening control loop of spring mechanism of 10kV vacuum circuit breaker |
| CN203813426U (en) * | 2013-09-29 | 2014-09-03 | 国家电网公司 | Tripping protector for circuit breaker |
-
2013
- 2013-09-29 CN CN201310451581.6A patent/CN103545795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | Circuit breaker opening and closing coil protection device |
| CN202363976U (en) * | 2011-12-06 | 2012-08-01 | 广东先达电业股份有限公司 | Transformer substation comprehensive automatic breaker control loop with burning-out proof function |
| CN202535044U (en) * | 2012-04-11 | 2012-11-14 | 济南市历城区供电公司 | Breaker switching-on and tripping control circuit |
| CN202616135U (en) * | 2012-06-14 | 2012-12-19 | 福建省电力有限公司泉州电业局 | Opening control loop of spring mechanism of 10kV vacuum circuit breaker |
| CN203813426U (en) * | 2013-09-29 | 2014-09-03 | 国家电网公司 | Tripping protector for circuit breaker |
Non-Patent Citations (2)
| Title |
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| 余良国等: "一种断路器分合闸线圈保护的方案", 《电力系统保护与控制》, vol. 36, no. 23, 1 December 2008 (2008-12-01) * |
| 高长民: "给断路器跳闸线圈加装保护电路", 《电工技术》, 31 December 2001 (2001-12-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045896A (en) * | 2016-02-05 | 2017-08-15 | 中国船舶重工集团公司第七�三研究所 | A kind of controllable energy storage device of order and energy storage method |
| CN107045896B (en) * | 2016-02-05 | 2018-12-28 | 中国船舶重工集团公司第七一三研究所 | A kind of controllable energy storage device of sequence and energy storage method |
| CN106019137A (en) * | 2016-07-19 | 2016-10-12 | 南宏电力科技有限公司 | Switch state detecting circuit of protective relaying device |
| CN106019137B (en) * | 2016-07-19 | 2018-07-27 | 南宏电力科技有限公司 | A kind of switch condition detection circuit of protective relaying device |
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Application publication date: 20140129 |