直流滤波器保护的相关问题

摘要

自南方电网直流工程投产以来直流滤波器保护多次发生不正确动作,直流滤波器保护的相关问题值得探讨.总结分析了2003年以来直流滤波器保护的典型案例,分析了保护不正确动作的原因及所采取的改进措施；进而针对糯扎渡、溪洛渡工程直流滤波器保护,提出需要重点关注直流滤波器保护与高压直流母线保护的配合问题.%The mis-trip cases have heppened many times since the HVDC projects were put in operation in China Southern Power Grid (CSG), so it is valuable to discuss the related issues of DC filter protection. Summarizing the typical mis-trip cases of DC filter protection since 2003, this paper analyzes the causes of the cases and the related improvements of the protection, and furthermore, pointing out that it is a key issue for the Nuozhadu and Xiluodu projects to solve the cooperation between DC filter protection and High Voltage Bus-bar Protection (87HV).