摘要
分析了一场由于开关柜绝缘缺陷而造成某发电厂全厂停电的事故。首先介绍了事故的发生经过以及现场检查情况。其次,从保护动作行为和相间短路两个方面对事故原因进行了分析。分析表明,开关柜工作环境、断路器绝缘状态以及消弧方式是导致相间短路的可能原因。最后,针对事故原因的分析给出了相应的整改意见,对预防类似事故的发生有一定参考意义。
An outage accident which is resulted from the insulation defect of a 35 kV switchgear is analyzed. Firstly, the process of the whole accident and the details of onsite inspection are introduced. Secondly, the accident is analyzed in terms of the protection performance and interphase short - circuit. The working environment of the switchgear, the insulation status of circuit - breaker and the manner of the arc suppression are recognized as the key reasons accounting for this accident. In the end, some measures that are helpful for preventing the similar accidents are put forward.
出处
《四川电力技术》
2014年第2期78-80,共3页
Sichuan Electric Power Technology
关键词
开关柜绝缘
击穿
放电
相间短路
switchgear insulation
breakdown
discharge
interphase short - circuit
