昆钢新区供配电系统中性点接地方式选择及应用

Seclection and Application of Neutral Grounding Mode from Power Supply and Distribution System at Kungang New Industrial Park

本文针对昆钢新区供配电系统，通过分析几种中性点接地方式的优缺点，最终确定了以小电阻接地方式的10kV供配电中性点接地系统，并且按照实际情况确定了电阻值的选择及系统零序电流保护的配置，为小电阻接地系统在今后的推广应用提供了借鉴及帮助。

For the supply and distribution system at Kungang New Industrial Park, through analysing the strengths and weaknesses of several neutral grounding modes, finally, the lOkV netural grounding system with low resistance drounding mode was determined, also the seclection of resistance value and the device of zero sequence current protection, which offered reference for popularization and application of low resistance grounding system in futrure.