放电管保护设计中通信线上对地电压的分析计算

Analysis and Calculation of Voltage between Communication Line and Earth in Protective Design of Gas Discharge Tube

提出了存放电管保护设计中任意接近情况下对地电压的条件判断计算法,由此得出严格满足设计要求的各短路点对应的对地电压的合理计算值,从而消除了通常用空投影段或重叠投影段的中点作为近似对应点进行计算所带来的误差。

Suggesting a calculating method of conditional justice of the voltage between line and earth in the protective design of the gas discharge tube under arbitrary contiguity circumstances, thus the reasonable calculating value of the voltage to earth can be obtained corresponding to each short-circuit point and being able to correspond strictly design requirement.So far the errors are eliminated produced by making medial point of image or superposition projection as approximate one in the usual way.