涟钢Ⅱ站接地方式研究与讨论  

Study and Discussion on Grounding Methods of Liangang Ⅱ Station

作　　者：李崇 李明和 岳玉琅 曾俊 周燕军 LI Chong;LI Minghe;YUE Yulang;ZENG Jun;ZHOU Yanjun(Valin Lianyuan Iron and Steel Co.,Ltd.,Loudi,Hunan 417009,China)

机构地区：[1]湖南华菱涟源钢铁有限公司,湖南娄底417009

出　　处：《冶金动力》2024年第2期5-8,19,共5页Metallurgical Power

摘　　要：涟钢公司由于电网接地电流较小,系统接地方式采取消弧线圈加不接地方式。近年来,随着公司发展,系统网络日趋复杂。系统内部分区域发生单相接地故障时,出现消弧线圈欠补偿,导致故障电缆持续拉弧、燃烧的现象。为此,从单相接地电容电流数学模型出发,对各区域接地电流进行计算,并核算现有消弧线圈补偿能力,为后续网络发展接地方式的选取提供理论基础。Due to the small grid grounding current,the system grounding method of Li⁃angang Company adopts the arcing coil plus ungrounding method.In recent years,with the development of the company,the system network has become increasingly complex.When a single-phase ground fault occurs in some areas of the system,undercompensation of the arcabsorbing coil would happen,resulting in a continuous arcing and burning of the faulted cable.Thus,based on the single-phase grounding capacitance current mathematical model,the grounding current of each region is calculated,and the existing arc-absorbing coil com⁃pensation capacity is accounted for,so as to provide a theoretical basis for the selection of grounding methods for subsequent network development.

关 键 词：接地方式 消弧线圈 单相接地电容电流 

分 类 号：TM862[电气工程—高电压与绝缘技术]