【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。更多还原

【Abstract】 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.更多还原