基于分形理论的高压断路器机械振动信号处理

Processing of Mechanical Vibration Signals of High-Voltage Circuit Breakers Based on Fractal Theory

提出了基于分形理论的处理高压断路器机械振动信号的新方法,它研究小波变换提取的机械振动信号具有分形特征的参数用来评估高压断路器机械操动机构的性能及其工作状态。通过与人为机械故障下的分形特征参数对比论证了该法的有效性。数据处理结果表明该方法具有应用前景。

High-Voltage Circuit Breaker (HVCB) is one of the most important devices in power system. During HVCB operations, most of faults are caused by the abnormal work of its mechanical operation mechanism. A new method is presented in this paper, which is used to analyze the work conditions of the mechanical operation mechanism of the HVCB. The procedure employs wavelets transform to get the parameters from the vibration signals of the mechanical operation mechanism based on the theory of fractals, which are used to evaluate the performance of them. In this paper, the data from the experiments are processed and compared with those from a fault condition of the mechanical operation mechanism, the validity of the method is proved.