电网技术2011，Vol.35Issue(11)：18-24,7.
±800kV特高压直流换流站绝缘配合方案分析
Analysis on Insulation Coordination Scheme for ±800 kV DC Converter Station
摘要
Abstract
Insulation coordination of converter substation is one of key technologies in the implementation of ±800kV DC power transmission project. Based on two ±800kV DC power transmission projects being constructed in China, i.e., the DC power transmission project from Xiangjiaba to Shanghai and that from Yunnan to Guangdong, the features of insulation coordination for UHVDC converter substations are analyzed in the aspects of separate arrangement of split smoothing reactor and the configuration of lightning arresters. The economic and technical superiorities of the separate arrangement of split smoothing reactor in UHVDC power transmission are emphatically researched, and it is pointed out that the separate arrangement of split smoothing reactor will be the preferred arrangement of smoothing reactor in UHVAC converter stations. The arrangement of lightning arresters for above-mentioned two converter subsatations are given, and the protecting function of each arrester is described. Finally, the end-to-end protecting function of smoothing reactor connected with pole bus by parallel arresters, which is adopted in UHVAC projects, as well as the merits and defects of different protection modes adopted for at the valve side of wye-wye connected converter transformer in above-metioned two UHVDC proj ects are analyzed.关键词
±800kV特高压直流输电/绝缘配合/平抗分置/避雷器布置Key words
±800kV DC power transmission/insulation coordination/separate arrangement of split smoothing reactor/arrangement of arrester分类
信息技术与安全科学引用本文复制引用
周浩,陈锡磊,陈润辉,王东举,袁士超,孙可..±800kV特高压直流换流站绝缘配合方案分析[J].电网技术,2011,35(11):18-24,7.基金项目
国家重点基础研究发展计划项目（973项目）（2011CB209405）. （）
