一种新型消弧线圈及自动调谐装置  

A new type arc suppression coil & its automatic tuning method

作　　者：唐轶[1] 胡长冬[1] 厉宏斌[1] 刘建华[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《煤炭学报》2010年第6期1045-1049,共5页Journal of China Coal Society

摘　　要：提出了一种新的消弧线圈。实验证明,该消弧线圈调感线性度好,调感速度快,补偿电流中谐波含量低等,并且不需要接地变压器提供接入中性点,特别适用于我国6/10kV配电变压器三角形接线的电网。提出了一种"接地"电流的测量方法。首先测量出电网正常运行的零序电压,而后控制消弧线圈输出1个已知的增量补偿电流,再测得该增量补偿电流输出后的电网零序电压值,依据这3个量可准确计算出电网的接地电流。模拟试验和挂网运行均证明该方法测量简便、精确。A new type arc suppression coil was proposed.Tests show that it’s outstanding features,such as good inductance linearity,high speed of inductance regulation,low harmonic component etc.,and particularly applicable to network of 6/10 kV distribution transformer that is triangle wiring in China as well,for the coil does not need a neutral point provided by grounding transformer.A new measurement method of one-phase-earth fault current was proposed.First,a zero-sequence voltage was measured;second,a known increment of compensation current was exported by controlling arc-suppression coil;then,other zero-sequence voltage was also measured.According to above 3 values,the one-phase-earth fault current was calculated.Test and operation results indicate that the measurement has a high accuracy and is easy to measure.

关 键 词：消弧线圈 谐振接地 调谐控制 接地电流测量 

分 类 号：TM475[电气工程—电器]