摘要
现有直流线路的主要保护配置包括主保护行波保护以及后备微分欠压保护等。本文首先基于仿真手段分析了行波保护在大过渡电阻接地故障时的保护性能,并进一步阐述了现有的直流线路后备保护功能。针对现有的直流线路保护的不足,最后探讨了可能的解决措施与未来的研究方向。
The protection configuration for LCC-HVDC DC transmission line include the traveling wave main protection and the un- der-voltage backup protection. The performance of traveling wave protection is first studied during a big resistance earth fault by using simulation method. Then, different backup protections are discussed. At last, the possible solutions and research direction are proposed.
出处
《云南电力技术》
2015年第4期86-88,共3页
Yunnan Electric Power
关键词
LCC-HVDC
行波保护
微分欠压保护
差动保护
LCC-HVDC
traveling wave protection
under-voltage protection
differential protection
