电力系统保护与控制Issue(23)：102-106,5.
云广特高压直流输电工程换流阀过负荷能力分析与计算
Analysis and calculation of converter valve overload capability in Yunnan-Guangdong UHVDC transmission
摘要
Abstract
Yunnan-Guangdong ±800 kV DC transmission project is the first UHVDC transmission project in the world. The DC power transmission system must supply emergency power when the load increases or AC system malfunctions at the receiving end. It requires the DC power system to overload operating to increase its transmission capacity. This paper mainly studies the overload capability of the converter valve. It proposes a theory of calculating the overload capability based on the junction temperature and cooling capability of the valve cooling system. Moreover, with the specific data, it calculates and analyzes the overload capability of converter valve in Chuxiong-Suidong DC transmission project. The result indicates that this arithmetic can get the accurate overload capability of converter valve, which can provide reference and guidance to the design and operation of the practical HVDC transmission project.关键词
特高压直流输电/换流阀/过负荷能力/结温/冷却系统Key words
UHVDC/converter valve/overload capability/junction temperature/cooling system分类
信息技术与安全科学引用本文复制引用
胡永银,李兴源,李宽,杨光源..云广特高压直流输电工程换流阀过负荷能力分析与计算[J].电力系统保护与控制,2014,(23):102-106,5.基金项目
国家自然科学基金重点项目（51037003）；南网超高压检修中心资助（K-GY2012-046）This work is supported by National Natural Science Foundation of China (No.51037003) （No.51037003）
