Detecting Method of High Voltage Circuit Breaker Spring Fatigue Based on Vibration Signal
Dou Longjiang1,2, He Yuling1,2, Wan Shuting1,2, Zhang Xiong1,2, Wang Xiaolong1,2
1. Department of Mechanical Engineering North China Electric Power University Baoding 071003 China; 2. Hebei Key Laboratory of Health Maintenance and Failure Prevention of Electrical Machinery and Equipment Baoding 071003 China
Abstract：Spring fatigue is a typical fault that frequently occurs in high-voltage circuit breakers. However, most traditional test methods cannot detect online. Therefore, a way to detect the spring fatigue fault based on vibration signals is proposed. Firstly, according to the working principle of the high-voltage circuit breaker, the energy transfer mechanism in the operation process is analyzed, and the whole structure is simplified into particle points. Then, after filtering the noise in the vibration signal, the equivalent energy distribution is calculated by constructing the kinetic energy function of each particle point. Finally, the energy transfer function of the high voltage circuit breaker is constructed by the nonlinear least square method to calculate the spring energy. The experimental results show that the detection error of the spring energy is within 2.2%, which verifies the effectiveness and accuracy of the proposed method. This method can provide a new way to detect spring fatigue in high-voltage circuit breakers.
豆龙江, 何玉灵, 万书亭, 张雄, 王晓龙. 基于振动信号的高压断路器弹簧疲劳程度检测方法[J]. 电工技术学报, 2022, 37(24): 6420-6430.
Dou Longjiang, He Yuling, Wan Shuting, Zhang Xiong, Wang Xiaolong. Detecting Method of High Voltage Circuit Breaker Spring Fatigue Based on Vibration Signal. Transactions of China Electrotechnical Society, 2022, 37(24): 6420-6430.
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