小波变换在高压开关在线检测行程信号中的应用

摘要

In high-voltage switchgear online test, due to complicated site environment, the online tested signal data may be dis-torted;in order to insure reality and reliability of the test data, there is a need to remove noise of signals. Introduction was made to a method of travel signal treatment and travel sensors to collect travel signals of high-voltage switchgear making and breaking operation were installed reasonably, then Matlab software programming was used to realize travel signal noise removing analysis based on wavelet transformation, so as to get real curve waveform after noise removed. The experimental result shows that wave-let transformation has fine noise removing effect.%　　在高压开关在线检测中，由于现场复杂的环境，在线检测得到的信号数据可能会失真。为了确保检测数据的真实性和可靠性，需对信号进行去噪处理。介绍了处理行程信号的一种方法，合理地安装行程传感器，采集高压开关分合闸操作的行程信号，此行程信号含有噪声，然后利用 Matlab软件编程实现基于小波变换的行程信号去噪分析，得到去噪后的真实曲线波形，实验结果表明小波变换具有良好的去噪效果。