电流直流分量对低压电流互感器计量特性影响的试验研究  

Experimental study on the influence of current DC component on the metrological characteristics of low-voltage current transformer

作　　者：赵震宇[1] 朱亮[1] 祝婧[1] 赵燕[1] 俞林刚 邓高峰[1] 

机构地区：[1]国网江西省电力科学研究院,南昌330096

出　　处：《电测与仪表》2016年第20期44-49,55,共7页Electrical Measurement & Instrumentation

摘　　要：电网中的电流直流分量会对低压电流互感器的计量特性产生影响,通过模拟含直流分量的正弦半波电流波形,对被试样品进行试验,分别研究半波电流峰值和直流分量大小对低压电流互感器计量特性的影响。试验表明:电流互感器一次侧电流中含有的直流分量会使二次侧电流发生畸变,其畸变程度既和一次侧电流中所含的直流分量大小有关,也和一次侧电流的峰值有关。Based on the simulation of sine half-wave current waveform which includes dc component and the experiment on the samples of the participants, the influence on the measurement characteristics of low-voltage current transformer caused by the peak value of half-wave current and de component is studied in this paper. The experiment shows that the dc component of the current in primary of low-voltage current transformer would cause the distortion of current in secondary side, and the distortion degree relates to the value of the dc component also the peak value of current in primary side.

关 键 词：电流直流分量 半波电流 低压电流互感器 计量特性 

分 类 号：TM933[电气工程—电力电子与电力传动]