城区配网中性点接地方式改进的研究

摘要

Because of too large of ,Aiming at the problem of Xuancheng Power Company that the cable -head and switchgear cabinet equipment often getting burnt ,this article works out the single -phase fault current value to grounding capacitance based on theoretical calculation and actual measurement , and the results prove that the capacitor current of urban distribution network is too large , exceeding the actual compensation capacity of the distribution network substation Petersen coil .Considering this actual probelm ,the article proposes that the Company should take the neutral point grounding via resistance method of distribution network to solve it .%以宣城供电公司城区配网电容电流过大，经常导致电缆头及开关柜柜内设备烧坏这一实际且亟需解决的问题为研究对象，通过对城区配网单相故障接地电容电流值的理论计算和实际测量都证明了配网电容电流过大，超过目前配网变电站站内消弧线圈的实际补偿能力。针对这一实际问题，提出了采用配网中性点经电阻接地的方法来解决。