直流系统接地选线的方法

Analysis on the Method of Grounding Line Selection in DC System

近年来,高频开关电源在变电站直流系统中得到了广泛应用。其中,接地选线装置的应用,为查找接地支路提供了极大方便。因此,着重分析了叠加低频信号、相位差偏磁调制、霍尔元件构成直流CT等接地选线方法,详细阐述了接地选线装置的原理,以期为设备选型提供参考。

In recent years,high frequency switching power supplies have been widely used in substation DC systems.Among them,the application of the grounding line selection device provides great convenience for finding the grounding branch.Therefore,the ground line selection method such as superimposed low frequency signal,phase difference bias magnetic modulation,Hall element forming DC CT is analyzed,and the principle of ground line selection device is elaborated in detail,in order to provide reference for setting alternative types.