发电厂低压厂用电动机单相接地短路保护  

Analysis of Line-to-ground Fault Protection for Low Voltage Auxiliary Motor in Power Plant

作　　者：李辰 卢艳林[1] LI Chen;LU Yan-lin(Central Southern China Electric Power Design Institute,Wuhan 430071,China)

机构地区：[1]中南电力设计院,湖北武汉430071

出　　处：《电力勘测设计》2018年第8期34-39,共6页Electric Power Survey & Design

摘　　要：结合华能轮台电厂2×350 MW热电联产工程输煤系统380/220 V厂用电设计,根据DL/T5153-2014《火力发电厂厂用电设计技术规程》关于低压厂用电电动机的单相接地短路保护的相关规定,通过ETAP软件分析和计算单相接地故障电流,对各类低压厂用电动机单相接地短路保护的配置提出相应方案,并使其能达到更安全,更经济,更可靠的运行目的。Through the analysis of calculation result of line-to-ground fault current achieved by ETAP software for the 380/220V coal handling auxiliary power system of China Huaneng Luntai 2X350MW power plant project, according to the relevant clauses for the line-to-ground fault protection of the LV auxiliary motor shown in the DL/T 5153-2014 ＂Technical code for the design of auxiliary power system of fossil-fired power plant＂, some schemes for line-to-ground fault protection of different kinds of LV motors are provided correspondingly to achieve safer, more economical and reliable operation in fossil-fired power plant.

关 键 词：单相接地 短路保护 低压输煤系统 电动机. 

分 类 号：TM621[电气工程—电力系统及自动化]