接地装置地电位升高对地埋通信电缆的影响及防护

Influence of Ground Potential Rising of Grounding Installations on Underground Communication Cable and PreventionHan Shukui

在介绍地电位升高的概念和影响范围的基础上,进行了电力设施接地装置附近地电位升高的计算。通过计算地埋铠装通信电缆的地电位升高,具体给出了地埋通信电缆电位升高的允许值,分进入发、变电站和经过或处在接地装置附近的两种情况进行保护措施分析。

On the base of introduction of concept of ground potential rising and its incidence, the paper caculated the ground potential rising near earthing device of electric device. The paper presented the allowable value of ground potential rising through the calculation of ground potential rising of underground armor communication cable. In analysis of underground communication cable, it should be divided into entering generation station or substation and nearby or through the earthing device two cases to analyze the prevention measures.