CAJ | 학술논문

对一起40.5 kV开关柜放电的原因进行了分析，对2种不同结构套管的电场分布进行了仿真，证明不带屏蔽套管周围空气中，电场强度大，均匀性差，更易发生局部放电。对导致开关柜放电的其他因素也进行了总结，提出切实可行的防范措施。
대일기40.5 kV개관거방전적원인진행료분석，대2충불동결구투관적전장분포진행료방진，증명불대병폐투관주위공기중，전장강도대，균균성차，경역발생국부방전。대도치개관거방전적기타인소야진행료총결，제출절실가행적방범조시。
This paper analyzes the reason of discharging in 40.5 kV switch cabinet and simulates the electric field distribution of two bushing with different structures. It is proved that the screen-free bushing has strong electric field strength and poor uniformity in the air , and hence partial discharge can easily happen. The pa-per also summarizes other factors causing discharge of switch cabinet and summarizes practical and feasible preventive measures.