Analysis on Characteristic Data Stability and Fault Mechanism of Circuit Breaker Mechanical Characteristics

doi:10.11930.2015.2.59

Abstract

Abstract: In order to study the reliability of the characteristic data and the change features of the fault characteristic data in diagnosis and assessment of high voltage circuit breakers, a data acquisition platform is constructed for such three signals as the circuit breaker contact trip signal, the operating mechanism current signal and the mechanical vibration signal, and an acquisition method is also proposed to obtain the eigenvalue of above 3 signals. Under the condition of different time and same state of circuit breaker, the stability of the characteristics data of each signal has been investigated. A study is made on the change features of the characteristic data of above three signals under three different operating states as resistance increases of operating mechanism control loop, single taking off of the opening spring and jam fault of the operating and transmission mechanism. The reliability of the data acquisition system and the feasibility of the data feature extraction method have been tested in this study, and the change features of the characteristic data of each single are obtained under different states of circuit breaker mechanical characteristics, which can provide an data support for diagnosis and assessment of high voltage circuit breakers.

Key words: circuit breaker mechanical properties, eigenvalue extraction, data stability, fault mechanism, data acquisition, vibration signal, wavelet energy entropy

CLC Number:

TM561

LI Bin, HAO Jiancheng, LIU Yitao, YU Zaiming. Analysis on Characteristic Data Stability and Fault Mechanism of Circuit Breaker Mechanical Characteristics[J]. Electric Power, 2015, 48(2): 59-65.

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URL: https://www.electricpower.com.cn/EN/10.11930.2015.2.59

https://www.electricpower.com.cn/EN/Y2015/V48/I2/59

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