关键词: 模糊推理, 泄漏电流, 污闪, 污秽绝缘子

Abstract: In this paper，a fuzzy inference system is built for recognizing and judging flashover stages of contaminated insulators through data obtained from artificial contamination test.The information implicated in mean value，pulse frequency，maximum value of leakage current and relative humidity was merged in this FIS，and some former results made by other researchers were considered too.The checking result shows that the FIS can recognize the stages of flashover and can output the risk value with good precision directly.So this method is more suitable for analyzing the data of flashover and is positive for building the flashover predicting system through monitoring corresponding data.

Key words: fuzzy inference, leakage current, flashover, contaminated insulators