环-地空气间隙在操作冲击电压下的放电特性

Switching Surge Flashover Characteristics of Ring-Earth Air Gaps

介绍了环-地空气间隙在操作冲击电压下的放电特性,得出了不同环径、不同波形下的间隙放电电压,电极电荷、偏差系数等与极间距离的关系,可以用以确定变电站设备支承绝缘的外形尺寸。

This paper describes the discharge characteristics of ring-ground gaps under switching impulse voltage, gives the relation curves between the discharge voltage、electrode charge、deviation factor and various ring radius, waveforms and electrodes distances. Based on it demension of support insulations of equipments in electric power stations can be determined.