电网技术2012，Vol.36Issue(9)：268-274,7.
高速接地开关熄灭特高压平行双回线路二次电弧分析
Analysis on Extinguishing Secondary Arc in UHVAC Parallel Double-Circuit Transmission Lines by High Speed Grounding Switch
陈曦 1张旭 2徐振宇 2闫晓卿 2杨奇逊 2李伟2
作者信息
- 1. 宁夏回族自治区电力设计院,宁夏回族自治区银川市750001
- 2. 电力系统保护与动态安全监控教育部重点实验室(华北电力大学),北京市昌平区102206
- 折叠
摘要
Abstract
Secondary arc caused by temporary single-phase earth fault and cross-line fault occurred in parallel double-circuit UHVAC transmission lines could be extinguished by high speed grounding switch (HSGS). The effects of reducing secondary arc current and recovery voltage by HSGS were analyzed, and the influences of various factors of double-circuit UHVAC transmission lines on the extinguishing of secondary arc were researched. Results of the analysis and the research showed that as for double-circuit transmission lines the secondary arc current and the recovery voltage of temporary cross-line fault were higher than those of temporary single-phase earth fault; both the length of transmission line and load current would influence secondary arc current and recovery voltage; it was disadvantageous to the extinguishing of secondary arc while HSGS was closed only at one terminal; and a higher secondary arc resistance contributed to fast arc extinguishing. Applying the HSGS, which was of low resistance and could be rapidly closed at both terminals, to the parallel double-circuit UHVAC transmission lines with length shorter than 200km, the secondary arc would be effectively extinguished to make die single-phase reclosure successful.关键词
特高压/高速接地开关/平行双回输电线路/单相重合闸/潜供电流/恢复电压Key words
ultra high voltage (UHV)/ high speed grounding switch (HSGS)/ parallel double-circuit transmission lines/ single-phase reclose/ secondary arc current/ recovery voltage分类
信息技术与安全科学引用本文复制引用
陈曦,张旭,徐振宇,闫晓卿,杨奇逊,李伟..高速接地开关熄灭特高压平行双回线路二次电弧分析[J].电网技术,2012,36(9):268-274,7.
