摘要
为研究影响泄漏电流的各种因素,在单片绝缘子人工污秽试验的基础上,提出了将泄漏电流分解为阻性和容性成分的新思路,研究了其与污秽程度、电压、空气相对湿度及绝缘子本身特性的关系。结果表明,同一电压下,阻性电流与污秽程度、空气相对湿度及绝缘子本身特性等因素密切相关;良好绝缘子的阻性电流对污秽程度和空气相对湿度变化的灵敏度比全电流高得多,且具有更高的可区分性;劣化绝缘子的容性电流对电压变化的灵敏度很高;阻性电流和容性电流是比全电流更准确和有效的在线监测特征参数。
In order to study the various factors that affect the leakage current,this paper puts forward a new research method which divides the leakage current into resistive current and capacitive current.Based on a large number of data obtained from artificial contamination tests,the relationships among these two currents and contaminated conditions,voltage,relative humility,characteristics of insulator itself is studied.The results show that the resistive current is dependent on the contaminated conditions,relativ...
出处
《水电能源科学》
北大核心
2010年第5期135-138,122,共5页
Water Resources and Power
基金
国网电力科学研究院基金资助项目(070523)
华中科技大学大学生科技创新基金资助项目(T200604)
关键词
绝缘子
人工污秽试验
洛推法
谐波分析法
泄漏电流阻性分量
泄漏电流容性分量
insulator
artificial contamination test
method of synthesizing vector
harmonic analysis method
resistive leakage current
capacitive leakage current
