浅谈煤矿35 kV变电站接地网与独立避雷针接地装置间距要求

Discussion on the Requirement of Distance Between 35kV Substation Grounding Grid and Independent Lightning Rod Grounding Device

通过分析对独立避雷针的接地装置与35 kV变电站接地网间的地中最小距离的要求,提出在实际施工时难以达到最小距离要求时的两种解决方案:降低独立避雷针接地装置的冲击电阻及增加绝缘隔离层,并利用伊敏河东矿区第一煤矿直供电系统改造项目35 kV变电站防雷接地系统验证此两种解决方案的可行性。

Through the analysis of the minimum distance between the grounding device of the independent lightning rod and the grounding grid of 35 kV substation,two solutions are proposed when it is difficult to meet the minimum distance requirement in actual construction:reducing the impact resistance of the independent lightning rod grounding device and increasing the insulation isolation layer.The feasibility of these two solutions is verified by using the lightning protection grounding system of 35 kV substation in Yimin Hedong Coal Mine.