±800kV特高压复奉直流接地极线路调爬工程施工技术  

Creepage Adjustment Engineering Technology for ±800kV Fufeng UHVDC Grounding Electrode Line

作　　者：顾俊杰[1] 袁奇[1] 

机构地区：[1]国网上海市电力公司检修公司,上海200063

出　　处：《电力与能源》2017年第2期91-95,共5页Power & Energy

摘　　要：强调了提高特高压直流接地极线路绝缘水平的重要性,通过将接地极线路绝缘子片数增加至5片,并按照间隙与绝缘子干弧距离比值为(80+2.5)%配置并联间隙,同时确保满足导线对地及交叉跨越安全距离要求等技术要点,确保了接地极线路满足线路运行规范,提高了电网运行的可靠性和稳定性。最后探讨了±800kV奉贤换流站-廊下接地极线路调爬工程的施工技术,并为重要输电通道特高压直流线路技改工程提供施工经验。This paper emphasizes the importance of improving the insulation level of UHVDC grounding elec- trode line. The grounding electrode line insulators are increased to 5 pieces the parallel gap is configured in accordance with the insulator gap dry arc distance ratio （80±2.5）%, ensuring that wire-to-ground safety dis- tance and cross-cutting requirements and other technical points meet the demands and that the grounding elec- trode line operates according to the line performance specifications. Therefore the reliability and stability of the power network have been improved. Besides, it discusses the creepage adjustment construction technology for the porch grounding electrode line in ±800kV Fengxian converter station, and provides some experience in the construction of UHVDC transmission channel line technological transformation project.

关 键 词：直流输电系统 特高压直流接地极线路 电网运行 

分 类 号：TM773[电气工程—电力系统及自动化]