CAJ | 학술논문

通过对某变电站遭受雷击过电压后发生的断路器烧毁事故进行分析,得出处于热备用状态下的断路器遭受雷电过电压损坏的主要原因是过电压在开路末端发生过电压全发射,造成过电压大幅度提高。可通过提高断路器本身耐受过电压能力和加强过电压保护两方面来加强断路器的安全性和可靠性。
통과대모변전참조수뢰격과전압후발생적단로기소훼사고진행분석,득출처우열비용상태하적단로기조수뇌전과전압손배적주요원인시과전압재개로말단발생과전압전발사,조성과전압대폭도제고。가통과제고단로기본신내수과전압능력화가강과전압보호량방면래가강단로기적안전성화가고성。
Via analysis to a burnt-down circuit-breaker accident taking place after certain substation undergoing lightning overvoltage, the main cause of circuit breakers undergoing lightning overvoltage damage under electrified state was that overvoltage all round radiation took place at the end of open circuit to make overvoltage raise in great scale. There are two ways such as to raise a circuit breaker itself with standing overvoltage capacity, to strengthen overvoltage protection and to strengthen safety and reliability of circuit breakers.