A Leakage Current Analysis of EHV Porcelain Insulators by Artificial Contamination Method

초고압 송전용 자기애자의 인공오손법을 통한 누설전류 분석

This paper researched leakage current characteristics of artificially contaminated EHV insulators through construction of long-term testing facility. Insulators were contaminated and classified into the ESDD contaminated levels under IEC standards method. As the test results of contaminated insulators was carried out several experiments, leakage current greatly increased during initial rainfall. After contaminated insulators were naturally washed by rain, leakage current was not increased.