摘要
针对电压互感器三次谐波电压异常,对PT中性线缺失后三次谐波电压产生的机理进行了分析,重点说明了Y/y0接线的三相组式PT的工作原理,得出PT中性线接线正确是测量装置能够正常工作的重要条件。同时对PT中性线缺失所带来的相关问题进行了分析,最后通过的实验及仿真进行验证。
In response to the third harmonic voltage abnormality of the voltage transformer, this paper analyzed the third harmonic voltage generated by the mechanism of PT neutral line loss, making highlights of the working principle about Y/y0 wiring three-phase group＇s PT. The analysis showed that the PT neutral line wiring is an important condition for a measuring device to work normally. The paper also analyzed the related problems of PT neutral loss and had been verified by the experiments and simulation.
出处
《电测与仪表》
北大核心
2012年第8期55-60,共6页
Electrical Measurement & Instrumentation
关键词
电压互感器
三次谐波
中性线
变压器
potential transformer, third harmonic, neutral line, transformer
