基于可控关断的电流源型直流输电系统设计及运行方式  

Design and Operation Mode of Based on Controllable Current Source Converter HVDC System

作　　者：张闻闻 陈龙龙 魏晓光 齐磊 高冲 贺之渊 陈其来 ZHANG Wenwen;CHEN Longlong;WEI Xiaoguang;QI Lei;GAO Chong;HE Zhiyuan;CHEN Qilai(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China;State Key Laboratory of Advanced Transmission Technology(Global Energy Interconnection Research Institute Co.,Ltd.),Changping District,Beijing 102209,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京市昌平区102206 [2]先进输电技术国家重点实验室(全球能源互联网研究院有限公司),北京市昌平区102209

出　　处：《中国电机工程学报》2022年第7期2532-2541,共10页Proceedings of the CSEE

基　　金：国家电网公司科技项目(基于可控关断的电流源型换流器关键技术研究与样机研究)(5500202058059A0000)。

摘　　要：分别从直流侧与交流侧分析了高压直流输电中可控电流源换流器的工作原理,并得出可控电流源换流器交直流侧关键参数的影响因素。在此基础上,以换流阀串联器件个数最低为目标,对滤波电容、联结变压器进行设计;以交流侧电流谐波衰减特性对滤波电感进行设计;以及从5个方面对直流侧平波电抗器参数进行设计。最后在PSCAD/EMTDC中搭建两端系统仿真模型,仿真结果表明,系统关键参数设计方法是合理可行的。The working principle of the controlled current source converter in HVDC transmission was analyzed from the DC side and the AC side respectively, and the influencing factors of the key parameters of the AC and DC side of the controlled current source converter were obtained. On this basis, the filter capacitor and connection transformer were designed with the minimum number of series devices of converter valve as the goal. The filter inductor was designed based on the harmonic attenuation characteristics of the AC side current. And the parameters of the DC choke were designed from five aspects. Finally, the simulation model of the two ends of the system was built in PSCAD/EMTDC, and the simulation results show that the design method of the main parameters of the system is reasonable and feasible.

关 键 词：直流输电系统 电流源型换流器 滤波电容 滤波电感 平波电抗器 

分 类 号：TM464[电气工程—电器]