预装式变电站中的内部电弧故障探析

Analysis of the Internal Arcing Fault in Pre-fabricated Substation

预装式变电站中主要采用的是中压开关柜,而内部电弧作为中压开关柜的重要构件,对于变电站的安全运行具有重要意义。虽然内部电弧出现故障的几率很低,但是一旦出现故障,所造成的危害是非常大的,甚至会使预装式变电站瘫痪,严重影响居民的正常用电。本文对预装式变电站中的内部电弧的故障原因进行分析,并针对故障原因提出相对应的预防措施,以保障变电站安全运行。

mainly used prefabricated substation is in medium voltage switchgear, and internal arc as an important component ofmedium voltage switch cabinet, is of great significance for the safe operation of substation.？Ahhough the probability of internal arcfault is very low, but once faults occur, the harm is very big, can make even the prefabricated substation paralysis, seriously affecting the residents of the normal use of electricity. This paper analysis the cause of the breakdown of internal arc prefabricatedtransformer substation, and puts forward some correspondingpreventive measures against failure, in order to ensure the safe operation of the substation.