立体双层接地网在高寒变电站的应用研究

Research on the Application of Stereoscopic Double Earth-electrode Network in Substations in High-cold Area

为解决冻土地区工程接地问题,结合蒙东通辽太平庄220kV变电站新建工程,提出了双层接地网敷设方案,以减少季节性变化因素对全站接地电阻的影响,并对该方案的有效性、可实施性、经济性作出说明。实践证明,通过在冻土地区变电中敷设立体双层接地网可有效降低工程投资,且可实施性强。

To solve the problem of engineering grounding in frozen earth area,combined with the new construction of the220 kV substation in Taipingzhuang,Liaotong,this paper puts forward a laying scheme of double earth-electrode network,to reduce the influence of seasonal variation on earthing resistance.It also explains the effectiveness,feasibility and efficiency of the scheme.It＇s proven that the construction investment can be effectively reduced by laying stereoscopic double earth-electrode network in frozen earth areas,and has a strong feasibility.