摘要
由于现行消弧线圈的自动跟踪补偿装置是在电网工频(50Hz)下工作的,而单相间歇性电弧接地时刻在健康相(非故障相)上产生的弧光过电压和通过电弧接地故障点的总电流是高频的,电网电容和消弧线圈电感电流在高频下的频率特性是完全不同的,不可能互相补偿或调谐,所以消弧线圈自动跟踪补偿装置是不可能“消除弧光接地过电压”的。
All presently used Peterson's coils which can automatically trace or tune are designed to work under power frequency. During a single line to ground fault caused by an intermittent arc, both the overvoltage on the healthy phases and the arcing current flowing through the faulty position are of high frequency properties. The frequency characteristics of the network capacitance and the inductance of Peterson's coil are totally different under high frequency, which means that three phase compensation or tuning is impossible under high frequency. Therefore, it is impossible to eliminate the ground arcing faults caused overvoltage by automatically traced or tuned Peterson's coils, so the guidance based on this theory is improper.
出处
《电网技术》
EI
CSCD
北大核心
2002年第10期75-77,共3页
Power System Technology
