±800kV/10000MW换流站直流回路接头端子设计及测试  

Research on the Design Principle and Test of the Contact Terminals in Large Current Loop of±800 kV/10000MW UHVDC Converter Station

作　　者：陈鹏 马亮 曾静 邹荣盛 周国梁 CHEN Peng;MA Liang;ZENG Jing;ZOU Rong-sheng;ZHOU Guo-liang(Central Southern China Electric Power Design Institute Co.Ltd.of CPECC,WuHan 430071,China;HVDC Technology Department of CEEC,Wuhan 430071,China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,湖北武汉430071 [2]中国能建工程研究院高压直流技术研究所,湖北武汉430071

出　　处：《电力勘测设计》2022年第3期35-40,共6页Electric Power Survey & Design

摘　　要：直流回路接头端子发热目前已成为特高压换流站运维的严重问题,对电网的安全运行造成了巨大的威胁。根据接头端子相关的规程规范和大电流温升试验结论,给出额定直流电压±800 kV、额定直流输送容量10000 MW直流输电工程换流站的直流回路接头端子的设计原则。并以某±800 kV换流站典型的直流回路接头端子设计为例,通过分析大负荷工况下接头端子的红外测温结果,以验证所提出的直流回路接头端子设计原则能够满足规程规范对接头端子最高温度(温升)的要求,对提高特高压换流站的安全可靠性具有重要的实用价值。The abnormal heating phenomena of contact terminal in large DC current loop of the UHVDC converter station became one of the most serious problems,which caused serious impact on the operation reliability of the power grid.Base on existing codes and standards of contact terminal temperature rise and the results of large current temperature rise test,the design principle of the contact terminal in large DC current loop of DC voltage±800 kV,capacity 10000 MW converter station is put forward and introduced detailedly in this paper.Then,taking the design of 3 typical contact terminals in large DC current loop of a±800 kV converter station as an example,the infrared temperature measurement results of contact terminals on the large current operation condition are analyzed.The infrared temperature measurement results indicate that the design principle of the contact terminal in large DC current loop proposed in this paper is able to meet the requirements of existing codes and standards of the temperature(temperature rise)limit of the contact terminal.This design principle is significant to improve the maintenance ability and operation reliability of the UHVDC converter station.

关 键 词：特高压直流输电 换流站 接头端子 通流密度 

分 类 号：TM721.1[电气工程—电力系统及自动化]