云贵互联工程高坡换流站直流滤波器改造研究  

Study on Improvement of DC Filter in Gaopo Converter Station of Yunnan-Guizhou Interconnection Project

作　　者：李兵 石永立 王秋阳 陈亮 卢毓欣 LI Bing;SHI Yongli;WANG Qiuyang;CHEN Liang;LU Yuxin(Guiyang Bureau of China Southern Power Grid Co.,Ltd.,EHV Transmission Company,Guiyang 550081,China;China Southern Power Grid Co.,Ltd.,Scientific Research Institute,Guangzhou 510080,China)

机构地区：[1]南方电网超高压输电公司贵阳局,贵州贵阳550081 [2]南方电网科学研究院,广东广州510080

出　　处：《电工技术》2021年第15期135-137,共3页Electric Engineering

摘　　要：直流滤波器是抑制HVDC直流侧谐波最典型、最有效、应用最广的设施。云贵互联工程改建后原系统直流侧谐波、系统参数等将发生变化,其中高坡换流站直流滤波器的变化和影响最显著。根据云贵互联工程运行工况和相关设备定值提出高坡换流站直流滤波器改造方案,并基于阻抗频率特性和等效干扰电流对直流滤波器性能进行分析,综合技术、经济因素探索HVDC两端改三端工程直流滤波器最优改造方式。DC filter is the most typical,effective and widely used facility to suppress HVDC harmonics.After the reconstruction of the Yungui Interconnection Project,the original system DC side harmonics and system parameters will change.Among them,the change and impact of the DC filter of the Gaopo converter station is the most significant.According to the operating conditions of the Yungui Interconnection Project and the fixed value of related equipment,a high-slope converter station DC filter transformation plan is proposed.The performance of the DC filter is analyzed based on the impedance frequency characteristics and the equivalent interference current.Considering the technical and economic factors,the optimal transformation mode of DC filter in HVDC two terminal to three terminal project is explored.

关 键 词：三端直流输电 直流滤波器 等效干扰电流 阻抗频率特性 

分 类 号：TM723[电气工程—电力系统及自动化]