基于可靠性和缺陷性分析的变电站直流系统接地处置对策研究  

Dispostion Research About DC System of Substation Ground Fault Based on Reliability and Defect

作　　者：刘清泉[1] 马慧卓[1] 张飞飞[2] 

机构地区：[1]国网河北省电力公司电力科学研究院,石家庄050021 [2]国网河北省电力公司,石家庄050021

出　　处：《河北电力技术》2016年第3期23-27,共5页Hebei Electric Power

摘　　要：介绍变电站直流系统组成、作用以及危险点源,从调控业务需求出发,对变电站直流系统可靠性以及缺陷性进行分析,通过对变电站直流系统供电模式,充电机和蓄电池组接线模式以及二次直流电源接线方式和对直流系统接地的危害进行分析,并从电网运行人员角度,提出直流接地的处置对策,并进行了案例分析。Substation DC system provides guarantee to the safe operation of primary equipment of power grid.If the DC system maintenance is undeserved,it will directly threat to the safe operation of power grid.Embarking from the power grid dispatch and monitoring work demand,this article discusses the reliability and defect of DC system in substation.The constitution,function and hazards of DC system are analyzed.Power supply mode of DC system are discussed,including the charger-battery connection mode and secondary dc power connection mode;The dangers of dc system faults are analyzed,and DC ground countermeasures are put forward from the view of power grid operation personnel.

关 键 词：变电站 直流系统 可靠性 调度 

分 类 号：TM862[电气工程—高电压与绝缘技术]