单电源模式下的钢铁厂二期供电系统改进方案研究  

Research and Discussion on Improvement Scheme of Phase Ⅱ Power Supply System in Iron and Steel Plant Based on Single Power Supply Mode

作　　者：任立新[1] REN Li-xin(Shougang Jingtang United Iron and Steel Joint Co.,Ltd,Tangshan 063200,China)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200

出　　处：《电工电气》2021年第8期49-52,60,共5页Electrotechnics Electric

摘　　要：某大型钢铁厂二期工程投产,规模达到1500万t/年的产能,需要有2个独立220kV电源点供电,而因之前受周边网架薄弱情况的制约,只存在一个电源点。从电力平衡、潮流分布、短路水平、安全稳定和投资金额等方面进行论述,并给出了钢铁厂扩建二期后与系统联络的2个方案,经对提出的2个方案分析研究,决定采用方案1,即保持现有内部供电网络与系统联络方案不变,等钢铁厂达到2000万t/年规模时,计划新增一座220kV变电站。The second phase project of a large iron and steel plant was put into operation,and this plant has a capacity of 15 million tons per year,requiring two independent 220 kV power supply points,but there was only one power supply point due to the weakness of the surrounding grid.After analyzing the points,like power balance,power flow distribution,short-circuit level,safety and stability,and investment,two schemes were proposed to solve the problem of the expansion of the iron and steel plant.After analyzing and studying the two proposed schemes,it was decided to adopt scheme 1,which is to keep the existing internal power supply network and system connection scheme unchanged,and plan to add a 220 kV substation when the steel plant reaches a scale of 20 million tons per year.

关 键 词：钢铁厂 独立电源 负荷 电力平衡 短路水平 

分 类 号：TM715[电气工程—电力系统及自动化]