Influence of HV LC filter on lightning overvoltages in Gas-Insulated Switchgear substations
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In the present paper simulations of the propagation of lightning overvoltages in a typical HV GIS substation are presented. The influence of HV LC filter on maximum overvoltages peak values was analyzed. Additionally, an improvement to the surge protection by using a HV filtering element introduced at the connecting point between the GIS substation and the transmission line has been proposed.