某电厂220 kV备用电源系统继电保护的问题及改进  

Problems and Improvement of Relay Protection of 220 kV Standby Power Supply System in a Power Plant

作　　者：彭雄伟 万玉晶 李烨刚 姜越岭 PENG Xiongwei;WAN Yujing;LI Yegang;JIANG Yueling(CNNC Jiangsu Nuclear Power Company Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]中核集团江苏核电有限公司,江苏连云港222000

出　　处：《电工技术》2021年第22期114-115,共2页Electric Engineering

摘　　要：介绍了某电厂220 kV备用电源系统的保护配置情况。分析了一起线路保护误判事件的原因,结果为保护逻辑不完善。校核了开关失灵保护辅助判据的灵敏性,剖析了失灵保护启动条件的合理性,发现了拒动隐患,提出了改进措施。The protection configuration of 220 kV standby power supply system in a power plant is introduced.A misjudgment event of line protection is analyzed,and the result shows that the protection logic is not perfect.The sensitivity of the auxiliary criterion of switch failure protection is checked,the rationality of the starting conditions of failure protection is analyzed,the hidden danger of refusal is found,and improvement measures are proposed.

关 键 词：电厂 备用电源 继电保护 

分 类 号：TM588[电气工程—电器]