Model study of lightning overvoltages in substation due to back flashover of overhead transmission line 220 kv

Abstract

Lightning performance of transmission network and power substations has a huge significance for power system reliability and national economic. Back flashover phenomenon is one of the major factors for overhead line outages. In order to achieve minimum of these disturbance there are a lot of lightning studies. This paper presents analysis and evaluation of the incoming surges at air-insulated outdoor 220 kV power substation due to back flashover through ATP-EMTP based model study.