摘要
对柳州沙塘５００ｋＶ变电站一台ｔｇδ异常的５００ｋＶ电流互感器进行了解剖试验，发现电容芯屏间的ｔｇδ与整体数值的关系不符合一般规律。通过互感器电容屏材料对ｔｇδ影响的分析，提出了测量半导体纸电容屏间介质实际ｔｇδ的方法。
A comprehensive test on a 500 kV current transformer with abnormal dissipation factors was carried out in 500 kV Shatang Substation It is found that the relations of tgδ between capacitance plates with the whole numerical values out of accord with the general rule Through analysis of the influence of capacitance plates on tgδ,a method for measuring the actual dissipation factors between capacitance plates of semi conductor paper is proposed
出处
《广西电力技术》
1998年第2期1-5,7,共6页
Guangxi Electric Power Technology
关键词
电流互感器
介质损耗因数
电容屏材料
电容式
current transformer \ dissipation factors \ capacitance plate \ semi conductor paper equivalent circuit
