±800 kV云广直流输电系统串联双阀组换流变分接开关125℃闭锁调整分析及处理  

Analysis and Dispose of Converter Transformer OLTC 125°C Blocking in Series Dual Groups of Yunnan-Guangdong ±800 kV DC Transmission Project

作　　者：陈灿旭[1] 刘茂涛[1] 张志朝[2] 宋述波[1] Canxu Chen;Maotao Liu;Zhichao Zhang;Shubo Song(Guangzhou Bureau, EHV Power Transmission Company, China Southern Power Grid, Guangzhou;EHV Power Transmission Company, China Southern Power Grid, Guangzhou)

机构地区：[1]中国南方电网超高压输电公司广州局,广州 [2]中国南方电网超高压输电公司,广州

出　　处：《智能电网（汉斯）》2013年第1期22-27,共6页Smart Grid

摘　　要：南方电网所有直流输电系统中,±800 kV云广特高压直流首次使用了真空有载分接开关,本文首先介绍真空有载分接开关的工作过程,然后总结分析了云广±800 kV直流输电工程中换流变分接开关125℃闭锁调整的原因,对其存在的风险进行深入剖析,最后提出有效的处理措施,降低云广特高压直流输电系统闭锁的风险。Yunnan-Guangdong ±800 kV DC transmission project is the first project which uses vacuum on-load tap- changer in all DC transmission projects of CSG. The paper introduces the operation of vacuum on-load tap-changer firstly, then summarizes and analyzes the cause of converter transformer OLTC 125°C blocking in Yunnan-Guangdong ±800 kV DC transmission project, and analyzes its risk thoroughly, at last, some effective measures which can depress the risk of blocking both pole in Yunnan-Guangdong ±800 kV DC transmission project are given.

关 键 词：特高压直流工程 换流变分接开关 125℃闭锁调整 

分 类 号：TM7[电气工程—电力系统及自动化]