The grounding fault that occurred in the 35 kV ungrounded system in pro-duction was analyzed by the method of combining theory with practice. The causes of why the ungrounded mode should be changed to the arc suppression coil grounding mode for the 35 kV distribution network neutral point were explained. The relevant strategies and solutions were brought forward. The selection basis of arc suppression coil and the solutions for actual situation suitable for this enterprise were given.% 根据生产实践中35 kV 不接地系统出现的接地事故，通过理论联系实际的方法展开分析，阐明了某35 kV 配电网络中性点应由不接地方式改变为消弧线圈接地方式的原因，提出了应对策略和解决方法，经计算给出了消弧线圈选择依据及适合本企业实际情况的解决方法。
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