污秽绝缘子高频泄漏电流特征的研究  

Study on the Characteristics of High Frequency Leakage Current of Contaminated Insulator

作　　者：乐波[1] 王黎明[1] 毛颖科[2] 

机构地区：[1]清华大学深圳研究生院能源与电工新技术实验室,广东深圳518055 [2]清华大学电机系,北京100084

出　　处：《高压电器》2005年第6期401-404,407,共5页High Voltage Apparatus

基　　金：国家自然科学基金资助项目(50377020)

摘　　要：泄漏电流和污闪放电的发展过程密切相关,监测泄漏电流是评估绝缘污秽状态的重要手段。为克服传统泄漏电流法的缺点,笔者通过人工污秽试验方法,研究了玻璃绝缘子的高频泄漏电流,并对几种污秽表面状态的高频泄漏电流的幅值、波形和频谱特征进行了分析,提出了污秽绝缘子的高频泄漏电流特征,以及高频泄漏电流特征参数与等值盐密的相关性。The leakage current is closely relative to the development of contamination flashover, and monitoring leakage current is an important measure to evaluate the contanmination status of insulator. The high frequency leakage current of glass insulator is studied based on the artificial pollution tests in order to avoid the disadvantages of traditional leakage current measurement. In the paper, the amplitude, waveform and frequency spectrum of high frequency leakage current are analyzed. Finally the characteristics of high frequency leakage current are stated, and the relativity between the characteristic parameters and the ESDD is discussed.

关 键 词：绝缘子 污秽 高频 泄漏电流 

分 类 号：TM85[电气工程—高电压与绝缘技术]