消弧线圈接地系统接地故障波形分析及调谐参数计算

The fault waveform analysis of arc-suppression coil earthing system and calculation of tuning parameters

通过对66kV系统发生单相接地故障时的暂态过程波形分析,计算出运行中消弧线圈的脱谐度和接地电容电流等参数,从而分析消弧线圈的补偿情况和灭弧效果。并对实际发生的弧光接地过电压进行了分析。

Through the analysis of the transient waveform at the moment of single-phase to ground fault in 66kV earthing system with arc-suppression coil, disresonant degree of arc-suppression coil and some parameters such as grounded current of capacitor have been calculated. Arc-suppression and compensation effect are therefore obtained. Analysis of grounded overvoltage through arc at field has been also carried out.