基于电压源型换流器的三端直流输电系统控制仿真研究  

The Simulation Control Research of MTDC Transmission System Based on VSC

作　　者：郑荣进[1] 余晓鸿[2] 熊玮[3] 周丹[3] 

机构地区：[1]福建工程学院,福州福建350108 [2]湖北省电力公司物流服务中心,湖北武汉430074 [3]华中科技大学电力安全与高效湖北省重点实验室,湖北武汉430074

出　　处：《华中电力》2011年第2期32-35,共4页Central China Electric Power

基　　金：福州市工业集成自动化行业技术创新中心(2010-PT-124)

摘　　要：VSC-HVDC技术是指采用全控型功率半导体器件的电压源换流器的直流输电技术,致力于研究基于VSC换流器的高压直流输电以及三端直流输电系统的运行与控制问题。建立了VSC换流器静态模型并设计了PI控制器,分析了适用于VSC-MTDC的电压下降和主从式控制两种运行模式的特点,并由此设计了一种与有源网络以及无源网络相连的并联三端系统,对其稳定运行以及潮流翻转的稳定运行进行了仿真试验。测试结果表明,运行控制性能良好,三端均能达到容量预设定值。VSC-HVDC technology means the utilization of full-controlled power semiconductor devices as voltage source converter on the DC transmission system.This paper aims at studying the problem of HVDC based on VSC converter.Furthermore,it studies the operation and control problems of tri-terminal DC transmission system.A VSC converter static model and a PI controller are established.Then,we analyzed the characteristics of two operation modes for VSC-MTDC,including voltage drop and the master-slave control.On the basis of above studies,a tri-terminal HVDC system connected to passive and active networks is established.The scenarios of stable operations and reversal of power flow are analyzed.It is shown with the test result that the performance of the operation and control is satisfactory and indexes achieve the preset capacities.

关 键 词：直流输电 VSC(电压源型换流器) 多端直流输电 

分 类 号：TM711[电气工程—电力系统及自动化]