±800 kV特高压直流输电线路空气间隙设计

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英文篇名：Discussion on Air Gap Design of ±800 kV UHVDC Transmission Line 作者：卢霁明 ; 龚小燕 英文作者：LU Ji-ming;GONG Xiao-yan;China Energy Engineering Group Yunnan Electric Power Design Institute Co.,Ltd.;Education and Training Evaluation Center,Yunnan Power Grid Co., Ltd.; 关键词：±800 ; kV特高压直流 ; 输电线路 ; 空气间隙 ; 过电压 ; 绝缘配置 英文关键词：±800 kV UHVDC;;transmission line;;air gap;;overvoltage;;insulation coordination 中文刊名：DLKC 英文刊名：Electric Power Survey & Design 机构：中国能源建设集团云南省电力设计院有限公司;云南电网有限责任公司教育培训评价中心; 出版日期：2019-05-31 出版单位：电力勘测设计 年：2019 期：No.125 语种：中文; 页：DLKC201905009 页数：4 CN：05 ISSN：11-4908/TK 分类号：48-51

摘要

±800 kV特高压直流输电线路(Ultra High Voltage Direct Current,UHVDC)具有送电容量大、输送距离长、线损低、可靠性高、投资收益高等优点,目前我国存在多条规划及建设中的±800 kV特高压输电线路,空气间隙的选择是特高压直流输电工程设计中的关键技术之一,输电线路塔头各种空气间隙的确定是塔头尺寸及结构设计的基础,风偏后导线对杆塔的最小空气间隙,应分别满足工作电压、操作过电压及雷电过电压的要求,合理选取各工况下的空气间隙,对线路的安全稳定运行及工程投资的节省都有现实意义。
        ±800 kV UHVDC transmission line has the advantages of large transmission capacity, long transmission distance, low line loss, high reliability and investment income,At present, there are some 800 kV UHVDC transmission lines under planning and construction that one of the key technologies is the choice of air gap.The determination of air gap is the basis of tower head size and structure design,The minimum air gap afrer wind deviation shall meet the requirements of working voltage, operating overvoltage and lightning overvoltage respectively,The air gap under different working conditions should be selected reasonably,which is practical significance for the safe and stable operation and the saving investment.

引文

[1]GB50790-2013,±800kV直流架空输电线路设计规范[S].
    [2]DL/T436-2005,高压直流架空送电线路技术导则[S].
    [3]胡新怡.±800kV特高压直流输电线路的塔头空气间隙和绝缘配合计算[D].上海:上海交通大学,2014.