特高压输电线路悬垂串金具优化研究  

Optimum Research of Suspension String on Ultra High Voltage Transmission Line

作　　者：牛海军 司佳钧 周立宪 朱宽军 刘胜春 朱小强 史小龙 NIU Haijun;SI Jiajun;ZHOU Lixian;ZHU kuanjun;LIU Shengchun;ZHU Xiaoqiang;SHI Xiaolong(China Electric Power Research Institute,Beijing 102400,China;Jiangsu Tiannan Power Equipment Co.,Ltd.,Rugao 226500,China)

机构地区：[1]中国电力科学研究院有限公司,北京102400 [2]江苏天南电力器材有限公司,江苏如皋226500

出　　处：《中国电力》2019年第3期95-101,共7页Electric Power

基　　金：国家电网有限公司科技项目(特高压交流工程降噪关键技术深化研究;SGTJ0000KXJS1700118)~~

摘　　要：目前特高压工程采用的三联悬垂串过长,影响了工程投资。为解决三联悬垂串过长问题,在借鉴中国±800 kV直流和1 000 kV交流工程金具设计、制造、建设及运行经验基础上,结合特高压交直流线路悬垂串金具结构的特点,通过对悬垂串内三变二联板、三角联板和平型挂板等金具组合的优化设计,提出三联双线夹悬垂串中三变二联板放在低压侧,同时采用单板式三角板与双板式三角板连接的方式代替原高压侧金具,通过串型三维建模、力学性能和电气性能仿真分析及真型电晕性能试验研究,成功设计出1 000 kV交流工程用紧凑型三联悬垂串及配套金具,缩短串长600 mm,技术经济效益显著。The length of triple suspension insulator string adopted in the UHV projects is always so long that it may result in the waste of engineering investment.In this article,so as to solve the problems mentioned above,the optimum design of the threevariable-two plane,triangle joint plate and hanging plate in suspension string was carried out based on the experience in design,manufacture,construction and operation of fittings used in±800 kV UHVDC projects and 1 000 kV UHVAC projects.It is proposed that the three-variable-two plate in the three-wire clip suspension string should be placed on the low-voltage side and the original fittings at high voltage side should be replaced by the connection of the single-plate triangle plate and the double-plate triangle plate.Thought the careful simulation analysis of the mechanical characteristics and electrical characteristics of the proposed,as well as the real-model corona characteristic test research,the compact triple suspension string and matching fittings for the 1 000 kV projects were successfully designed.The total length of the insulator string can be reduced about 600 mm which can improve the economic benefit obviously.

关 键 词：悬垂串 紧凑型 三维建模 仿真计算 真型试验 特高压 

分 类 号：TM752[电气工程—电力系统及自动化]