配电网电容电流谐振测量新方法  

A new method for resonance measurement of capacitance current distribution network

作　　者：曾祥君[1] 刘张磊[1] 马洪江[1] 许瑶[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410076

出　　处：《长沙理工大学学报（自然科学版）》2008年第1期48-52,共5页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(50207001)

摘　　要：提出了固定电抗器并联自动投切可调消弧线圈的随调接地方式,改进了电容电流谐振测量方法.从固定电抗器二次侧向配电网注入变频电流信号,根据从配电网返回的电压信号计算电容电流.模拟实验和现场运行结果表明,该方法具有测量精度高、测量范围广及测量简单等特点.A new method for the capacitance current measurement is presented. An adjusta- ble reactor is connected in parallel to the peterson coil,and they are connected in series with the open delta side of zero sequence voltage transformers. The capacitance current can be calculated by injecting varying frequent current and measure voltage signal in distribution systems. Experimentation results show that the proposed method is with high precision, wide measurement scope and convenience.

关 键 词：配电网 消弧线圈 电容电流 电抗器 

分 类 号：TM727[电气工程—电力系统及自动化]