CN205723379U - A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof - Google Patents
A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof Download PDFInfo
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- CN205723379U CN205723379U CN201620179296.2U CN201620179296U CN205723379U CN 205723379 U CN205723379 U CN 205723379U CN 201620179296 U CN201620179296 U CN 201620179296U CN 205723379 U CN205723379 U CN 205723379U
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- 238000012544 monitoring process Methods 0.000 description 6
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Abstract
This utility model relates to breaker technical field, is specifically related to a kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof.Auxiliary contacts of circuit breaker conversion equipment based on spring transmission includes chopper auxiliary permutator, spring and kinematic link.The external chopper in one end main shake-up power transmission shaft of kinematic link, one end of another termination spring of kinematic link, the contact of a termination chopper auxiliary permutator of spring.Breaker control circuit controls a delayed contact 52A in parallel on the auxiliary contact 52b in loop at breaker closing, a delayed contact 52B in parallel on the auxiliary contact 52a that breaker open operation controls loop.Delayed contact 52A and 52B is auxiliary contacts of circuit breaker conversion equipment based on spring transmission.The trigger characteristic of delayed contact 52A is identical with the trigger characteristic of auxiliary contact 52a, and the trigger characteristic of delayed contact 52B is identical with the trigger characteristic of auxiliary contact 52b.
Description
Technical field
This utility model relates to breaker technical field, is specifically related to a kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof.
Background technology
The method for designing (as shown in Figure 1) of current breaker control circuit, basic principle is at breaker closing run duration, is monitored the integrity of two groups of trip(ping) circuits of chopper by middle HWJ relay, now can not monitor the integrity of closing circuit；During breaker open operation, monitored the integrity of its closing circuit by auxiliary reclay TWJ, now can not monitor the integrity of trip(ping) circuit.From the point of view of actual motion, often there is the defect occurring the shutting-brake control circuit breaking of recessiveness due to all kinds of locking contact faults in chopper at combined floodgate run duration.In the case of drawbacks described above; when electrical network combined floodgate run duration occurs when line fault; after circuit breaker trip is excised fault by protection device; after reclosing device sends combined floodgate order; because disconnection fault occurs in shutting-brake control loop; chopper can not normally close a floodgate, thus the stability of operation of power networks is brought hidden danger, reduces the reliability to customer power supply.Change the method for this state to need to design a kind of novel breaker exactly and control loop, thus realize no matter chopper and all can realize in which kind of running status of divide-shut brake that chopper divides, closing a floodgate two groups controls function for monitoring while loop states.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof, it is achieved no matter chopper all can realize in which kind of running status of divide-shut brake that chopper divides, closing a floodgate two groups controls function for monitoring while loop states.
The technical solution of the utility model is:
A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission, including chopper auxiliary permutator, spring and kinematic link.The external chopper in one end main shake-up power transmission shaft of kinematic link, one end of another termination spring of kinematic link, the contact of a termination chopper auxiliary permutator of spring.
Concrete, spring is under the action effect of kinematic link, and the time driving the contact of chopper auxiliary permutator to go to terminal is 50ms～5s.
The breaker control circuit that auxiliary contacts of circuit breaker conversion equipment based on spring transmission is constituted, controls loop including breaker closing and breaker open operation controls loop.A delayed contact 52A in parallel on the auxiliary contact 52b that breaker closing controls loop, a delayed contact 52B in parallel on the auxiliary contact 52a that breaker open operation controls loop.Delayed contact 52A and 52B is auxiliary contacts of circuit breaker conversion equipment based on spring transmission.The trigger characteristic of delayed contact 52A is identical with the trigger characteristic of auxiliary contact 52a, and the trigger characteristic of delayed contact 52B is identical with the trigger characteristic of auxiliary contact 52b.
The beneficial effects of the utility model: this utility model devises the auxiliary contacts of circuit breaker conversion equipment with action delay characteristic based on spring transmission.It is different from traditional mechanical linkage and drives chopper auxiliary permutator, this auxiliary contacts of circuit breaker conversion equipment moves chopper auxiliary permutator action by spring belt, it is characterized in the conversion time utilizing the stretching effect of spring to add chopper auxiliary permutator, thus the delay time of its conversion of more traditional auxiliary contact to be grown.Under normal circumstances, the auxiliary permutator time delay of chopper is 30ms, and the auxiliary contacts of circuit breaker conversion equipment action conversion time of this utility model design should be greater than this value.In view of the arc extinguishing die-away time in main operation loop in transformation process, this utility model is changed delay time and should be greater than 50ms.It addition, be the requirement meeting operation monitoring, the transfer delay time is preferably less than 5s.Therefore, in the range of the transfer delay time of auxiliary contacts of circuit breaker conversion equipment is set in 50ms～5s by this utility model.Breaker control circuit of the present utility model is two delayed contact 52A and 52B with enough action delay characteristics of Parallel Design on existing breaker control circuit, under the Reliability of Microprocessor premise not affecting whole operation circuit, serve uninterrupted monitor chopper divide, the effect of closing circuit, the design does not affect the anti-bouncing function of chopper.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of existing breaker control circuit.
Fig. 2 is the structure principle chart of auxiliary contacts of circuit breaker conversion equipment based on spring transmission.
Fig. 3 is the circuit theory diagrams that the breaker closing improved controls loop.
Fig. 4 is the circuit theory diagrams that the breaker open operation improved controls loop.
Chopper shown in Fig. 1 is open position.In Fig. 1, QF1 is equivalent to auxiliary contact 52b in Fig. 3, Y1 and is equivalent to 52C closing coil in Fig. 3；QF2 is equivalent to auxiliary contact 52a in Fig. 4；Y3 is equivalent to 52T switching winding in Fig. 4.
In figure, 1 chopper auxiliary permutator, 2 springs, 3 kinematic links, the contact of 4 chopper auxiliary permutatoies, i.e. the linkage main shaft of chopper auxiliary permutator, 5 terminal row wiring terminals, 6 52C closing coils, 7 52T switching windings, 8 all kinds of locking contacts.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As in figure 2 it is shown, the auxiliary contacts of circuit breaker conversion equipment of embodiment includes chopper auxiliary permutator 1, spring 2 and kinematic link 3.The external chopper in one end main shake-up power transmission shaft of kinematic link 3, one end of another termination spring 2 of kinematic link 3, the contact of a termination chopper auxiliary permutator 1 of spring 2.Spring 2 is under the action effect of kinematic link 3, and the time driving the contact of chopper auxiliary permutator 1 to go to terminal is 50ms～5s.This auxiliary contacts of circuit breaker conversion equipment is different from traditional mechanical linkage and drives chopper auxiliary permutator, this auxiliary contacts of circuit breaker conversion equipment moves chopper auxiliary permutator action by spring belt, it is characterized in the conversion time utilizing the stretching effect of spring to add chopper auxiliary permutator, thus the delay time of its conversion of more traditional auxiliary contact to be grown.Under normal circumstances, the auxiliary permutator time delay of chopper is 30ms, and the auxiliary contacts of circuit breaker conversion equipment action conversion time of the present embodiment should be greater than this value.In view of the arc extinguishing die-away time in main operation loop in transformation process, the present embodiment is changed delay time and should be greater than 50ms.For meeting the requirement of operation monitoring, the transfer delay time is preferably less than 5s.Therefore, in the range of the transfer delay time of auxiliary contacts of circuit breaker conversion equipment is set in 50ms～5s by the present embodiment.In Fig. 2, O point is the midpoint of the chopper main shake-up whole stroke of power transmission shaft, and now spring 2 is in the raw (as shown in solid line spring in Fig. 2).No matter breaker closing state (kinematic link 3 advances to A point), or gate-dividing state (kinematic link 3 advances to B point), spring 2 is in extended state (as shown in dotted line spring in Fig. 2), and the direction of spring 2 tensile force is different, pull its chopper connected auxiliary permutator 1 action direction of rotation different, thus realize the conversion of auxiliary contact.
The breaker control circuit being made up of the auxiliary contacts of circuit breaker conversion equipment in embodiment, controls loop including breaker closing and breaker open operation controls loop.As shown in Fig. 3 ~ 4, a delayed contact 52A in parallel on the auxiliary contact 52b that breaker closing controls loop, a delayed contact 52B in parallel on the auxiliary contact 52a that breaker open operation controls loop.Delayed contact 52A and 52B is auxiliary contacts of circuit breaker conversion equipment based on spring transmission.The trigger characteristic of delayed contact 52A is identical with the trigger characteristic of auxiliary contact 52a, and the trigger characteristic of delayed contact 52B is identical with the trigger characteristic of auxiliary contact 52b.
At breaker closing run duration, its sub-gate circuit is conducting, and the now chopper HWJ actuating of relay monitors with organizing trip(ping) circuit.As it is shown on figure 3, because 52A is Guan Bi, if the components and parts such as all kinds of locking contact, relay and closing coil are good, then TWJ relay monitoring circuit is still that conducting.Therefore, TWJ relay still can play and monitor that whole closing circuit is the most intact, if there is the effect of disconnection defect.In like manner, chopper is at separating brake run duration, and its closing circuit is conducting, and the now chopper TWJ actuating of relay monitors closing circuit.As shown in Figure 4, because 52B is Guan Bi, if the components and parts such as all kinds of locking contact, relay and switching winding are good, then HWJ relay monitoring circuit is still that conducting.Therefore HWJ relay still can play and monitor that two groups of sub-gate circuits are the most intact, if there is the effect of disconnection defect.Chopper, during splitting or integrating lock, needs to rely on its auxiliary contact 52b, 52a to play the whole operation circuit of cut-out and the effect of arc extinguishing.The delayed contact that breaker control circuit in the present embodiment is in parallel, 52A, 52B have enough action delay characteristics, under the Reliability of Microprocessor premise not affecting whole operation circuit, serve uninterrupted monitor chopper divide, the effect of closing circuit, the design does not affect the anti-bouncing function of chopper.Suitable spring is selected for delayed contact 52A and 52B, ensure that controlling loop has enough time delays to ensure that the auxiliary contact of chopper itself can reliable rupturing operation loop dividing, in the transformation process of closing operation, to operation circuit arc extinguishing, carry out reliably point, closing operation.HWJ relay and the relay that TWJ relay is breaker operator loop, Fig. 1 is breaker body mechanism second loop return wiring figure, therefore shows not in the drawings.The circuit of HWJ relay and TWJ relay connects and operation principle is shown in " power engineering electrical design handbook (the electric secondary part) " that Northwest Electric Power Design Institute, Ministry of Water Resources and Electrical Power writes, China Electric Power Publishing House's in December, 1989 is published, the inside expressly states otherwise: HWJ relay i.e. breaker closing position supervisory relay, TWJ relay i.e. circuit breaker trip position supervisory relay.It should be noted that the circuit of HWJ relay and TWJ relay connects and operation principle is the common knowledge of this area, even if the application is not described in detail, those skilled in the art are it is also evident that above content.
The above embodiment is only preferred embodiment of the present utility model, and the not feasible enforcement of this utility model is exhaustive.For persons skilled in the art, any obvious change done to it on the premise of without departing substantially from this utility model principle and spirit, within all should being contemplated as falling with claims of the present utility model.
Claims (3)
1. an auxiliary contacts of circuit breaker conversion equipment based on spring transmission, it is characterised in that it includes chopper auxiliary permutator (1), spring (2) and kinematic link (3)；The external chopper in one end main shake-up power transmission shaft of described kinematic link (3), one end of another termination spring (2) of described kinematic link (3), the contact of termination chopper auxiliary permutator (1) of described spring (2).
Auxiliary contacts of circuit breaker conversion equipment based on spring transmission the most according to claim 1, it is characterized in that described spring (2) under the action effect of kinematic link (3), driving the contact of chopper auxiliary permutator (1) to go to time of terminal is 50ms～5s.
3. the breaker control circuit that auxiliary contacts of circuit breaker conversion equipment based on spring transmission is constituted, control loop including breaker closing and breaker open operation controls loop, it is characterized in that a delayed contact 52A in parallel on the auxiliary contact 52b that described breaker closing controls loop, a delayed contact 52B in parallel on the auxiliary contact 52a that described breaker open operation controls loop；Described delayed contact 52A and 52B is auxiliary contacts of circuit breaker conversion equipment based on spring transmission；The trigger characteristic of described delayed contact 52A is identical with the trigger characteristic of auxiliary contact 52a；The trigger characteristic of described delayed contact 52B is identical with the trigger characteristic of auxiliary contact 52b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620179296.2U CN205723379U (en) | 2016-03-09 | 2016-03-09 | A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620179296.2U CN205723379U (en) | 2016-03-09 | 2016-03-09 | A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof |
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| CN205723379U true CN205723379U (en) | 2016-11-23 |
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| CN201620179296.2U Expired - Fee Related CN205723379U (en) | 2016-03-09 | 2016-03-09 | A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679615A (en) * | 2016-03-09 | 2016-06-15 | 国网河北省电力公司检修分公司 | Spring transmission based circuit breaker auxiliary contact conversion apparatus and circuit breaker control loop formed by same |
-
2016
- 2016-03-09 CN CN201620179296.2U patent/CN205723379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679615A (en) * | 2016-03-09 | 2016-06-15 | 国网河北省电力公司检修分公司 | Spring transmission based circuit breaker auxiliary contact conversion apparatus and circuit breaker control loop formed by same |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |