合并单元数据可靠性提升方案研究与应用  

Research and application of a reliability improvement scheme for merging unit data

作　　者：崔玉 朱继红 曹海欧 冯亚东 侯永春 张玥 吴昊 耿伟松 CUI Yu;ZHU Jihong;CAO Haiou;FENG Yadong;HOU Yongchun;ZHANG Yue;WU Hao;GENG Weisong(State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210000,China;Nanjing Hz-ieds Electric Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]国网江苏省电力有限公司,江苏南京210000 [2]南京合智电力科技有限公司,江苏南京210000

出　　处：《电力系统保护与控制》2021年第2期160-165,共6页Power System Protection and Control

基　　金：国家自然科学基金项目(U1804252);国网江苏省电力有限公司研究项目(J2018041)。

摘　　要：针对现场合并单元SER软故障问题造成SV采样数据异常的情况,分析了SER软故障使合并单元失效的机理。提出双数据流的概念,采用数据处理冗余防误方法,解决了SER故障造成SV数据出错的问题。面对智能化变电站母线合并单元异常情况下控制保护设备大面积失压的问题,提出了母线合并单元配置冗余方案。采用双套母线合并单元电压接入间隔合并单元的无缝电压选择机制,解决了单套母线合并单元异常控制保护设备失压的问题,并在工程现场得到充分验证。Given an abnormal situation of SV sampling data caused by a SER soft fault in a field merging unit,this paper analyzes the failure mechanism.The concept of a dual data stream is proposed,and an error prevention method of data processing redundancy is adopted to solve the problem of the SV data error.In order to solve the problem of large area voltage loss of control and protection equipment when the bus merging unit is abnormal in an intelligent substation,a redundancy scheme for the unit configuration is proposed.A seamless voltage selection mechanism of a double bus merging unit voltage connecting to a bay merging unit is adopted to solve the problem of voltage loss of abnormal control and protection equipment.It has been fully verified at the project site.

关 键 词：合并单元 可靠性 防误方法 电压无缝选择 SER 

分 类 号：TM63[电气工程—电力系统及自动化]