3 / 2022-03-25 16:29:18

Research on Lightning inrush wave overvoltage in EHV GIS Substation

High Voltage and Insulation Technology > High voltage testing and measurement

 When lightning intrudes into the over-voltage in 500kV substation, the lightning wave will be introduced into the substation along the line, which will seriously affect the insulation level of the equipment. In this paper, firstly, the working principle, characteristics and lightning current simulation of ZnO arrester are described. Then, the electromagnetic transient program (EMTP) is used in a 500kVGIS substation-ATP) has carried on the simulation research to the lightning over-voltage, specifically studied the lightning protection effect of metal oxide arrester, compared the lightning over-voltage under the different lightning location and operation mode, calculated the 500kV GIS Substation under the single in single out operation mode, 500kV The influence of different positions of lightning arresters in GIS on the magnitude of lightning over-voltage and the lightning over-voltage on the substation equipment in GIS.