定子线棒层间电晕成因探究及处理

Study on Formation Causes of Interlayer Corona in Stator Bar of Hydro Turbine

随着水轮发电机组的容量越来越大,对定子线棒的绝缘水平、安装工艺和运行维护提出了更高的要求。定子线棒发生电晕具有一定的普遍性,本文以水轮发电机定子线棒层间电晕为研究对象,分析其形成原因。并结合实际案例,针对层间电晕缺陷提出了相应的处理方法。

With the increasing capacity of hydro-generating units,the stator bar’s insulation level,installation technology and operation and maintenance are required to a higher level. It is universal for the stator bar to have corona. This paper takes the interlayer corona of the stator bar of the hydro-generatoras the research object,analyzes its formation reason and puts forward the corresponding treatment methodfor the interlayer corona defect by analyzing the actual cases.