220kV电流互感器带电水冲洗试验研究及分析

Analysis of living water cleaning of 220kV current transformer

带电水冲洗是对电力设备外绝缘净化的有效措施,但由于220 kV塔型电流互感器结构特殊,容易发生冲洗闪络,成为开展220 kV带电水冲洗的难点。通过试验,研究了不同等值附盐密度、是否喷涂RTV的带电水冲洗的闪络电压,科学掌握了双枪跟踪法对塔型电流互感器的带电水冲洗方法,提出了220 kV塔型电流互感器不喷涂RTV与喷涂RTV后的水冲洗临界盐密值。

Living water washing is an efficiency depurative technique for electriferous equipment , but the complicated structure of the 220 kV tower model current transformer easily occurred wash flashover, that is the difficult to living wash for the 220 kV electriferous equipment. The flashover voltage of the living water cleaning under different conditions, different equal salt density, painted RTV or not were studied. The results showed that the electrification water washing technique about tower model electrical inductance equipment by means of two - gun tracker is a good command. In addition the critical salt density values were determined on the surface of 220 kV tower model electrical inductance equipment that was painted RTV or not.