电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2013年
8期
2225-2229
,共5页
朱艺颖%刘翀%王薇薇%董鹏%孙栩
硃藝穎%劉翀%王薇薇%董鵬%孫栩
주예영%류충%왕미미%동붕%손허
特高压直流输电%同塔双回线%过电压
特高壓直流輸電%同塔雙迴線%過電壓
특고압직류수전%동탑쌍회선%과전압
UHVDC%double-circuit transmission lines on the same tower%overvoltage
采用特高压双回直流线路同塔架设的方式,在很大程度上能够缓解特高压直流工程发展过程中输电走廊选址困难的问题。文章对双回特高压直流同塔架设的过电压沿线分布特性和最高水平进行了详细的仿真研究。对导线4种不同布置方案下的过电压沿线分布特性和最高水平进行了对比研究,并与特高压直流线路单独架设的过电压水平进行了比较分析;对同塔架设双回特高压直流线路过电压水平的影响因素进行了敏感度分析。研究表明,同塔架设导线布置方式不会引起线路过电压沿线分布特性变化,同时确定了线路过电压水平最高的同塔双回导线排列方式及其过电压水平。
採用特高壓雙迴直流線路同塔架設的方式,在很大程度上能夠緩解特高壓直流工程髮展過程中輸電走廊選阯睏難的問題。文章對雙迴特高壓直流同塔架設的過電壓沿線分佈特性和最高水平進行瞭詳細的倣真研究。對導線4種不同佈置方案下的過電壓沿線分佈特性和最高水平進行瞭對比研究,併與特高壓直流線路單獨架設的過電壓水平進行瞭比較分析;對同塔架設雙迴特高壓直流線路過電壓水平的影響因素進行瞭敏感度分析。研究錶明,同塔架設導線佈置方式不會引起線路過電壓沿線分佈特性變化,同時確定瞭線路過電壓水平最高的同塔雙迴導線排列方式及其過電壓水平。
채용특고압쌍회직류선로동탑가설적방식,재흔대정도상능구완해특고압직류공정발전과정중수전주랑선지곤난적문제。문장대쌍회특고압직류동탑가설적과전압연선분포특성화최고수평진행료상세적방진연구。대도선4충불동포치방안하적과전압연선분포특성화최고수평진행료대비연구,병여특고압직류선로단독가설적과전압수평진행료비교분석;대동탑가설쌍회특고압직류선로과전압수평적영향인소진행료민감도분석。연구표명,동탑가설도선포치방식불회인기선로과전압연선분포특성변화,동시학정료선로과전압수평최고적동탑쌍회도선배렬방식급기과전압수평。
Adopting the way of erecting double circuit UHVDC transmission lines on the same tower, the difficulty of selecting the site for transmission corridor during the development of UHVDC power transmission projects can be alleviated to a great extent. The detailed simulation study of the overvoltage distribution along the double circuit UHVDC transmission lines on the same tower and the highest overvoltage levels are performed; the comparative study on overvoltage distribution characteristics along the double circuit UHVDC transmission lines on the same tower under four different arrangement schemes of conductors and the highest overvoltage levels are carried out and compared with the overvoltage level of UHVDC transmission line singly erected on the tower; the sensitivity analysis on factors impacting the overvoltage levels of the double circuit UHVDC transmission lines on the same tower is conducted. Study results show that the arrangement schemes of conductors do not lead to the variation of overvoltage distribution characteristics along the transmission lines, and the conductor arrangement leading to the highest overvoltage level under double circuit UHVDC transmission lines on the same tower and corresponding overvoltage level are determined.