天广直流输电工程两起极闭锁故障的原因分析及其反措  

The investigation of two times pole-blocked and its countermeasure in Tian-Guang HVDC transmission project

作　　者：曹鸿[1] 李书勇[2] 

机构地区：[1]中国南方电网有限责任公司超高压输电公司天生桥局,贵州兴义562400 [2]中国南方电网有限责任公司超高压输电公司广州局,广东广州510405

出　　处：《电力系统保护与控制》2008年第24期93-96,共4页Power System Protection and Control

摘　　要：介绍了天广直流输电工程直流保护系统紧急闭锁出口回路的配置情况,对直流保护系统测量故障引起的两次极闭锁原因进行了分析,针对测量故障所暴露的问题,提出了相应的防范措施,并根据实例说明了防范措施的效果,为今后直流保护系统更科学的设计和运行维护提供了技术参考和经验。The scheme of ESOF circuit located at DC protection system in Tian-Guang HVDC transmission project is introduced. Two times pole blocked events caused by DC protection system measurement fault are analyzed and some resolve methods are given aimed at the questions exposed. The effect of resolve methods used in Tian-Guang HVDC transmission project is explained. For more scientific design and maintenance of DC protection system in the future, it provides some reference and experience.

关 键 词：天广直流输电工程 直流保护系统 测量故障 极闭锁 反措 

分 类 号：TM721.1[电气工程—电力系统及自动化]