CN203445605U - Protector for closing coil of breaker - Google Patents
Protector for closing coil of breaker Download PDFInfo
- Publication number
- CN203445605U CN203445605U CN201320433368.8U CN201320433368U CN203445605U CN 203445605 U CN203445605 U CN 203445605U CN 201320433368 U CN201320433368 U CN 201320433368U CN 203445605 U CN203445605 U CN 203445605U
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- coil
- closing
- breaker
- closed contact
- time
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- 230000001012 protector Effects 0.000 title abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
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Abstract
The utility model discloses a protector for a closing coil of a breaker. The protector comprises a housing, and a time relay, an intermediate relay and a closing coil control loop arranged in the housing, wherein the closing control loop is in parallel connection with a loop which is formed by serial connecting a normally closed contact KM1 of the intermediate relay, a normally closed contact DL1 of the breaker and the closing coil YO, a coil KM of the intermediate coil is in serial connection with a power supply, and a closing delay contact KT of the time delay is connected in series between the coil KM of the intermediate coil and the power supply; and a normally closed contact KM3 of the intermediate relay is connected with the output end of the power supply in series. The protector employs the simple circuit to control the electrification time of the closing coil when the breaker has faults, wherein wiring is simple, operation is reliable, the coil is avoided from burnout due to incapability of carrying out closing operation, the workload and time of maintenance are greatly reduced, labor and material resources are saved, and power supply time is ensured.
Description
Technical field
The utility model relates to the breaker closing coil protect device that a kind of transformer station is used.
Background technology
After transformer station's line maintenance or equipment routine test finish, operating personnel needs remote-control circuit breaker combined floodgate power transmission in the distance, traditional breaker closing coil control principle drawing as described in Figure 1, comprise that the combined floodgate that is connected in electric power loop keeps loop, circuit breaker normally-closed contact DL and closing coil Y0, by remote control closes a floodgate keep loop action realization to breaker closing coil whether electric control.But actual, put into operation in process, often can be because the reasons such as coming off of the clamping stagnation of mechanical mechanism in circuit breaker, electromagnetic core cause the circuit breaker displacement of cannot normally closing a floodgate; Yet in this process, owing to closing a floodgate, keep loop to send reclosing command always, therefore closing coil two ends can be for a long time in keeping charged job state, now the temperature of breaker closing coil just can sharply rise, finally cause closing coil insulation to be burnt, circuit breaker cannot continue to use, and increases time and the expense of maintenance and replacing breaker coil.
Utility model content
The utility model technical issues that need to address are to provide simple, the reliable breaker closing coil protect device of a kind of wiring, for when the breaker mechanical unit failure, effectively guarantee that breaker closing coil is not burnt.
For addressing the above problem, technical solution adopted in the utility model is:
A coil protect device, comprises shell, is provided with the time relay and auxiliary relay in shell; Described auxiliary relay normally-closed contact KM1 is connected in series in to close a floodgate and keeps between loop and circuit breaker normally-closed contact DL1, described auxiliary relay normally-closed contact KM2, time relay coil KT and circuit breaker normally-closed contact DL2 are connected in series as closing coil control loop, and closing coil control loop is connected in the two ends, loop that are connected in series by auxiliary relay normally-closed contact KM1, circuit breaker normally-closed contact DL1 and closing coil Y0 in parallel; Described auxiliary relay coil KM is connected in series in both ends of power, is also connected in series with time relay timing closing contact KT1 between auxiliary relay coil KM and power supply; Described auxiliary relay normally-closed contact KM3 is connected in series in power output end.
Improvement of the present utility model is: in described shell, be also provided with warning circuit, time relay timing closing contact KT2 is connected in warning circuit.
The beneficial effect that adopts technique scheme to produce is:
The utility model protector adopts simple circuit; control the closing coil conduction time of circuit breaker when fault; wiring is simple; reliable; substantially stopped breaker coil because mechanical structure clamping stagnation etc. are former thereby the situation that causes burning; greatly alleviate repairing work load and time, saved manpower and materials, guaranteed power-on time.
Accompanying drawing explanation
Fig. 1 is traditional breaker closing coil control circuit figure;
Fig. 2 is this novel breaker closing coil control circuit figure;
Fig. 3 is the circuit diagram of alarm circuit described in the utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further details:
A coil protect device, comprises shell and the time relay, auxiliary relay and warning circuit is in the enclosure set, its schematic diagram as shown in Figure 2.
Auxiliary relay normally-closed contact KM1 is connected in series in to close a floodgate and keeps between loop and circuit breaker normally-closed contact DL1, auxiliary relay normally-closed contact KM2, time relay coil KT and circuit breaker normally-closed contact DL2 are connected in series as closing coil control loop, and closing coil control loop is connected in the two ends, loop that are connected in series by auxiliary relay normally-closed contact KM1, circuit breaker normally-closed contact DL1 and closing coil Y0 in parallel.Closing coil control loop is for controlling the electric time that obtains of closing coil.
Auxiliary relay coil KM is connected in series in both ends of power, is connected in series with time relay timing closing contact KT1 between auxiliary relay coil KM and power supply.Being provided for and time relay formation locked loop of auxiliary relay, guarantees the reliable normal operation of the time relay.
Auxiliary relay normally-closed contact KM3 is connected in series in power output end, and for when circuit breaker cannot normally carry out feed motion, disconnecting closes a floodgate keeps the power supply in loop, makes the thorough power-off in closing coil two ends.
As shown in Figure 3, time relay timing closing contact KT2 is connected in warning circuit warning circuit, and in the time of cannot normally closing a floodgate for circuit breaker, trigger alarm circuit is realized the warning of circuit breaker failure.
Operation principle of the present utility model is as described below.
When circuit breaker distant place closing operation, closing coil two ends obtain electric, if circuit breaker can normally carry out closing operation, time relay timing time of the present utility model is breaker closing operate time, this time can not exceed setting-up time, therefore alarm circuit is failure to actuate, and auxiliary relay can not move yet; When the mechanical mechanism of circuit breaker breaks down, cannot realize closing operation, now, the timing time of the time relay exceeds the breaker closing operate time of setting, and time relay timing closing contact KT1 is closed, and auxiliary relay coil KM obtains electric, auxiliary relay normally-closed contact KM1～KM3 opens, thereby make closing coil YO, time relay coil KT and close a floodgate to keep loop power-off, disconnect and control power supply, prevent that coil from burning out.In the time of time relay action, time relay timing closing contact KT2 trigger alarm circuit is connected, and warning circuit sends alarm signal, notifies operating personnel to overhaul.
Claims (2)
1. a breaker closing coil protect device, comprises shell, it is characterized in that: in shell, be provided with the time relay and auxiliary relay;
Described auxiliary relay normally-closed contact KM1 is connected in series in to close a floodgate and keeps between loop and circuit breaker normally-closed contact DL1, described auxiliary relay normally-closed contact KM2, time relay coil KT and circuit breaker normally-closed contact DL2 are connected in series as closing coil control loop, and closing coil control loop is connected in the two ends, loop that are connected in series by auxiliary relay normally-closed contact KM1, circuit breaker normally-closed contact DL1 and closing coil Y0 in parallel;
Described auxiliary relay coil KM is connected in series in both ends of power, is also connected in series with time relay timing closing contact KT1 between auxiliary relay coil KM and power supply;
Described auxiliary relay normally-closed contact KM3 is connected in series in power output end.
2. breaker closing coil protect device according to claim 1, is characterized in that: in described shell, be also provided with warning circuit, time relay timing closing contact KT2 is connected in warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433368.8U CN203445605U (en) | 2013-07-19 | 2013-07-19 | Protector for closing coil of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433368.8U CN203445605U (en) | 2013-07-19 | 2013-07-19 | Protector for closing coil of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445605U true CN203445605U (en) | 2014-02-19 |
Family
ID=50096623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320433368.8U Expired - Fee Related CN203445605U (en) | 2013-07-19 | 2013-07-19 | Protector for closing coil of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445605U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300513A (en) * | 2014-09-23 | 2015-01-21 | 国网安徽省电力公司阜阳供电公司 | Vacuum circuit breaker closing coil protector |
| CN106057595A (en) * | 2016-07-21 | 2016-10-26 | 华自科技股份有限公司 | Power switch device of breaker exit circuit |
| CN106771904A (en) * | 2016-11-30 | 2017-05-31 | 中国电力科学研究院 | A kind of system and method for carrying out impact test to controllable arrester in extra-high voltage environment based on sequential |
| CN110161404A (en) * | 2019-05-23 | 2019-08-23 | 首钢京唐钢铁联合有限责任公司 | High-voltage circuitbreaker fault detection method, device and electronic equipment |
| CN113395017A (en) * | 2021-06-16 | 2021-09-14 | 南方电网调峰调频发电有限公司 | Pumped-storage system, control method and storage medium |
-
2013
- 2013-07-19 CN CN201320433368.8U patent/CN203445605U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300513A (en) * | 2014-09-23 | 2015-01-21 | 国网安徽省电力公司阜阳供电公司 | Vacuum circuit breaker closing coil protector |
| CN106057595A (en) * | 2016-07-21 | 2016-10-26 | 华自科技股份有限公司 | Power switch device of breaker exit circuit |
| CN106057595B (en) * | 2016-07-21 | 2018-09-11 | 华自科技股份有限公司 | The power switch device of breaker outlet loop |
| CN106771904A (en) * | 2016-11-30 | 2017-05-31 | 中国电力科学研究院 | A kind of system and method for carrying out impact test to controllable arrester in extra-high voltage environment based on sequential |
| CN110161404A (en) * | 2019-05-23 | 2019-08-23 | 首钢京唐钢铁联合有限责任公司 | High-voltage circuitbreaker fault detection method, device and electronic equipment |
| CN110161404B (en) * | 2019-05-23 | 2021-12-21 | 首钢京唐钢铁联合有限责任公司 | High-voltage circuit breaker fault detection method and device and electronic equipment |
| CN113395017A (en) * | 2021-06-16 | 2021-09-14 | 南方电网调峰调频发电有限公司 | Pumped-storage system, control method and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |