The Dynamic Characteristics and Energy Storage State Detection Method of High-voltage Circuit Breaker Closing Spring
Li Pengfei1, Zhou Wenjun1, Zeng Guo2 ,Zhao Siyang1 ,Wang Xiao2
1.School of Electrical Engineering Wuhan University Wuhan 430072 China 2.Huangshi Power Supply Company of State Grid Corporation of China Huangshi 435000 China
Abstract：The energy storage state of the closing spring in the spring operating mechanism affects the closing characteristics of the high-voltage circuit breaker.The acceleration signal of the spring in the closing process is divided into two parts.Then the minimum spatial distance of the energy release velocity between the standard spring and the spring under test are obtained by calculating the first part of the acceleration signal based on the dynamic time warping algorithm.For the second part of the acceleration signal,the eigenfrequency of the closing spring is extracted and corrected by the correcting method for discrete spectrum.The weighted Euclidean distance,which is calculated by data fusion of the minimum spatial distance and the eigenfrequency after correction,is taken as the measured eigenvalue.The experimental results show that the energy storage of the closing spring in the CT20 operating mechanism meets the requirement for the standard pressure with 5% deviation when the weighted Euclidean distance is less than 0.5.
李鹏飞,周文俊,曾国,赵思洋,王晓. 高压断路器合闸弹簧动态特性及 储能状态检测方法[J]. 电工技术学报, 2016, 31(3): 104-112.
Li Pengfei, Zhou Wenjun, Zeng Guo ,Zhao Siyang ,Wang Xiao. The Dynamic Characteristics and Energy Storage State Detection Method of High-voltage Circuit Breaker Closing Spring. Transactions of China Electrotechnical Society, 2016, 31(3): 104-112.
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2016, Vol. 31 
