关于电力变电站接地若干问题的讨论

Discussion About Several Issues on Substation Grounding

详细介绍了变电站内接地网的相关内容,通过分析站内、站外接地阻抗以及电流分布情况,确定经接地网入地的最大接地短路电流,介绍了站内保护接地网、等电位接地网和相应接地电阻评价标准,以及站内直流地、交流地问题与站内同一个接地网的对应关系,相关内容能够为变电检修人员以及变电站设计人员提供参考。

Several issues about grounding in substation are introduced. First of all, the algorithm of maximum grounding current is given based on distribution of grounding impedance and short circuit;then the protection grounding grid and equipotential grounding grid with its evaluation standard of corresponding resistance are provided. In the end, the DC grounding and AC grounding system are discussed and the original is same. The above knowledge could provide preference for substation maintenance personnel and substation designet.