钢铁企业中压供配电系统改低电阻接地方式研讨  

Discussion on the Medium-Voltage Power Supply and Distribution System of Iron and Steel Enterprises Changed with Low-Resistance Grounding Method

作　　者：高大全 李星 杨余杰 GAO Daquan;LI Xing;YANG Yujie(Pangang Group Panzhihua Steel Vanadium Co.,Ltd.Energy Power Branch,Panzhihua,Sichuan 617000,China)

机构地区：[1]攀钢集团攀枝花钢钒有限公司能源动力分公司,四川攀枝花617000

出　　处：《冶金动力》2024年第1期1-4,共4页Metallurgical Power

摘　　要：针对某大型钢铁企业6~35 kV供配电系统中性点不接地或经消弧线圈接地方式带来的问题,结合发生的接地故障案例及现场实测供配电系统的电容电流,提出对现有6~35 kV供配电系统实施中性点低电阻接地方式改造。对改造所涉及的相关重点问题进行分析,并提出解决措施,为实施供配电系统中性点低电阻接地方式改造提供借鉴。Aiming at the problems brought by the neutral point of the 6~35 kV power supply system and distribution system of a large iron and steel enterprise not being grounded or grounded by the arc-canceling coil,combined with the cases of grounding faults and the capacitance currents of the power supply and distribution system measured at the site,it is proposed to carry out the modification of the neutral point of the existing 6~35 kV power supply and distribution system in the form of low-resistance grounding.The key issues involved in the transformation are analyzed and solution measures are proposed to provide reference for the implementation of the transformation of the neutral low-resistance grounding method of the power supply and distribution system.

关 键 词：6~35 kV供配电系统 中性点接地方式 低电阻接地 单相接地故障 电容电流测试 

分 类 号：TM862[电气工程—高电压与绝缘技术]