CN203445605U - Protector for closing coil of breaker - Google Patents

Protector for closing coil of breaker Download PDF

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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
Authority
CN
China
Prior art keywords
coil
closing
breaker
closed contact
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320433368.8U
Other languages
Chinese (zh)
Inventor
刘自力
杨运领
吴龙
白海洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yongnian county power supply Co
State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
Yongnian county power supply Co
State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yongnian county power supply Co, State Grid Corp of China SGCC, Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical Yongnian county power supply Co
Priority to CN201320433368.8U priority Critical patent/CN203445605U/en
Application granted granted Critical
Publication of CN203445605U publication Critical patent/CN203445605U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Breaker closing coil protect device
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.
CN201320433368.8U 2013-07-19 2013-07-19 Protector for closing coil of breaker Expired - Fee Related CN203445605U (en)

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 (4)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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

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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