Research on high precision signal detection algorithm in the process of disconnector switching

Disconnector switching test can effectively assess the electromagnetic compatibility of electronic transformers. In order to carry out the test smoothly and analyze the test results effectively, it is necessary to accurately detect the signal during the opening and closing process of the disconnector. In this paper, the high-precision transient signal detection method is studied. The improved HHT is used to effectively suppress the endpoint effect in EMD decomposition, and the accurate positioning and detection of transient signal parameters, signal fluctuation law and transient disturbance time are realized.