Lightning Invaded Overvoltage Monitoring Technology in Substation Based on the Principle of ZnO Lightning Arrester Block Voltage Dividing

摘要

The lightning invaded overvoltage in substation is one of the main reasons for insulation damage of substation equipment. Due to the shortage of bandwidth and sampling rate, the existing monitoring device cannot meet the monitoring requirements of the lightning invaded overvoltage in substation. Hence, this paper puts forward a method to monitor the lightning invaded overvoltage based on the principle of ZnO lightning arrester block voltage dividing, the consistency test of the voltage-dividing ratio of ZnO lightning arrester block in the linear and nonlinear region is carried out, and the experiment results demonstrate the feasibility of this method.