小水电并网的110kv变电站线路重合闸研究  

Research on the Line Reclosing of a 110 kV Substation with Small Hydropower Grid Connection

作　　者：叶青超 黎永华 魏菱 卓浩泽 YE Qingchao;LI Yonghua;WEI Ling;ZHUO Haoze(Liuzhou Power Supply Bureau of Guangxi Power Grid Go.,Ltd.,Guangxi Liuzhou 545005,China;Electric Power Research Institute of Guangxi Power Grid Co.,Ltd.,Guangxi Nanning 530023,China)

机构地区：[1]广西电网有限责任公司柳州供电局,广西柳州545005 [2]广西电网有限责任公司电力科学研究院,广西南宁530023

出　　处：《广西电力》2021年第3期57-60,共4页Guangxi Electric Power

基　　金：中国南方电网公司技改项目(项目名称:11OkV南寨站等6个站11OkV备自投装置更换项目,项目编号:040200GS62200018)。

摘　　要：为研究小水电并网对变电站线路重合闸的影响,本文通过对一起变电站110kV线路发生瞬时故障后保护及重合闸动作情况的分析,阐述了有小水电上网的变电站联络线故障跳闸后,存在因其母线电压不会马上消失而导致重合闸不正确动作的问题。从小电源解列和备自投方面提出三种改进措施,可根据现场综合应用,提高重合闸成功率,确保电网运行稳定。In order to study the influence of small hydropower grid connection on substation line reclosing,the protection and reclosing operations of a 110 kV line in a substation after an instantaneous fault are analyzed in this paper.After the fault and trip of the tie line of the substation with small hydropower grid connection,the recloser does not operate correctly because the bus voltage will not disappear immediately.Three improved measures are proposed from aspects of small power supply splitting and automatic bus transfer,and can be comprehensively applied according to field conditions so as to improve the success rate of reclosing and ensure the stable operation of power grid.

关 键 词：小水电 重合闸 解列 

分 类 号：TM762.2[电气工程—电力系统及自动化]