Model Arrester SiC Menggunakan Model Arrester ZnO IEEE WG 3.4.11

Abstract

Arrester model is needed to analyse the insulation coordination in power system. The model should give a suitable respon for varying transient fault. In this paper, we conduct simulation that modified from IEEE WG 3.4.11 model. The model is modified by insert a switch that voltages dependent. Arrester modeling respons then compare to the laboratory testing result, with SiC 12 kV arrester sample. Testing conduct with time front varying from 1.2 to 29.7 s with magnitude 51 kV, 52.5 kV dan 54 kV. The difference between simulation and laboratory testing was 4.332 % for sparkovervoltage and 3.259 % for residual voltage discharge curren