【摘要】 本文扼要地介绍了葛洲坝电厂500kVMOA3次事故的情况，分析了事故原因，并给出了人工污秽试验和加裙位置优化计算的结果并介绍了实施反事故措施后安全运行一年多的情况。更多还原

【Abstract】 In this paper three faults of 500kV MOA in Gezhouba hydroelectric power station are briefly described． The reasons which caused the faults are analyzed．The result ofartificial pollution test and that of the electric field calculation are given． The countermeasures for this type of faults are also presented．更多还原