A circuit breaker opening and closing coil characteristic testing device
A technology of opening and closing coil and characteristic testing, applied in circuit breaker testing, testing dielectric strength and other directions, can solve problems such as lack of quality evaluation of opening and closing coil, improve accuracy and anti-interference ability, and ensure accuracy , the effect of eliminating test errors
Active Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +1
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- Abstract
- Description
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Problems solved by technology
In addition, according to statistics, 50% of circuit breaker failures are caused by failure of opening and closing coils.
In the current relatively conservative maintenance, the quality evaluation of the opening and closing coils lacks certain pertinence
Method used
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0032] Such as figure 1 As shown, the circuit breaker opening and closing coil characteristic testing device of the present invention is provided with a coil resistance testing unit, a coil insulation and turns testing unit, and is controlled by a controller.
[0033] Among them, the controller is used for fault diagnosis of the real-time monitoring data of the opening and closing coil of the circuit breaker by the coil resistance testing unit, the coil insulation and the number of turns testing unit, so as to realize the real-time monitoring of the opening and closing coil of the circuit breaker; the coil resistance testing unit is used for Receive the resistance test signal sent by the controller, and the control unit collects the resistance of the opening and closing coil of the circuit breaker, and transmits the data to the controller; the coil insu...
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The invention discloses a device for testing the characteristics of breaker opening and closing coils. The device comprises a controller, a coil resistance testing unit and a coil insulation and number-of-turns testing unit. The controller is respectively connected with a signal source, the coil resistance testing unit and the coil insulation and number-of-turns testing unit, the coil resistance testing unit and the coil insulation and number-of-turns testing unit perform testing through a coil to be tested, tested data are sent to the controller, the controller performs fault diagnosis on the breaker opening and closing coils in real time, and therefore real-time monitoring of the breaker opening and closing coils is realized. According to the device, the performance and the quality of the coils are estimated through testing of the characteristics of the coils, quality defects and fault hidden dangers are eliminated, the reliability and the stability of products in use are guaranteed, and the operation safety of a power system is improved.
Description
technical field [0001] The invention discloses a circuit breaker opening and closing coil characteristic test and fault diagnosis technology, including the opening and closing coil steady-state characteristic test, the opening and closing coil transient characteristic test, the opening and closing coil insulation characteristic test, the opening and closing coil Thermal stability test and opening and closing coil expert diagnosis system. Background technique [0002] High-voltage switch is the most critical electrical equipment in the power system, especially the number of high-voltage circuit breakers is large, the amount of maintenance is large, and the cost is high. Its reliability directly affects the grid security of the power system. Relevant data show that more than half of substation maintenance costs are spent on high-voltage circuit breakers, and 60% of them are used for minor repairs and routine maintenance of circuit breakers. In addition, according to statisti...
Claims
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IPC IPC(8): G01R31/327G01R31/12
Inventor 李义仓李石吕新良李程王森郭磊程兴胜黎斌胡义军李小军
Owner STATE GRID CORP OF CHINA