国家电网220 kV及以上交流保护十年运行分析  

Analysis on Protective Relaying and Its Operation Conditions in 220 kV and Above AC System of SGCC in Past Ten Years

作　　者：张烈[1] 王德林 刘亚东[1] 周泽昕[1] 吕鹏飞 王志洁[1] 李妍霏 刘宇 申华[1] 杨国生[1] 

机构地区：[1]电网安全与节能国家重点实验室(中国电力科学研究院),北京市海淀区100192 [2]国家电力调度控制中心,北京市西城区100031

出　　处：《电网技术》2017年第5期1654-1659,共6页Power System Technology

基　　金：国家电网公司科技项目(JB71-16-007)~~

摘　　要：介绍了国家电网公司近10年来(2006—2015)在继电保护领域取得的成果,综合分析了国家电网公司220 k V及以上电压等级交流系统继电保护装置的装备和运行情况,详细介绍了装置微机化率、双重化率、国产化率的发展情况,对近10年来继电保护装置动作情况、不正确动作原因以及采用"常规互感器+合并单元"方式的智能变电站220 k V及以上电压等级继电保护装置在2014年各类型线路故障中的动作时间进行了深入分析。选取了由于保护装置原理缺陷、通道、运维等方面问题造成的5次典型性保护不正确事件进行分析。在此基础上,针对继电保护装置的生产制造、基建调试、运行维护以及智能变电站等方面提出了有效建议,并展望了"十三五"期间保护装置就地化、小型化、智能化运维体系等继电保护关键技术。This paper summarizes development of the State Gird Corporation of China （SGCC） in field of protective relaying in past ten years （2006-2015）, presents relative achievements and provides comprehensive analysis of protective relay equipment and its operation condition in 220 kV and above AC systems. It also presents development of micro-computerized rate, double configuration rate and localization rate of protective relay over past decade. Operation and incorrect action reasons of protective relay are analyzed, especially operation time of line relay equipment with ＂conventional transformer ＆ merging units＂ during line faults in 220 kV and above digital substations in 2014. Five typical incorrect relay action events caused by equipment principle defects, line protective relaying channels and maintenance are presented. On these bases, effective suggestions about manufacture, infrastructure, debuging, smart substation are put forward. Key technologies of protective relaying in the 13th Five-Year are prospected, such as in-situ and miniaturized protective relay equipment, intelligent operation and maintenance system.

关 键 词：电力系统 继电保护 智能变电站 不正确动作 运行分析 

分 类 号：TM721[电气工程—电力系统及自动化]