基于三电平电压源换流器的高压直流输电系统的控制策略研究  

Study on Control Strategy of Three-Level VSC-HVDC System

作　　者：刘洪涛[1] 徐政[1] 

机构地区：[1]浙江大学电机系,310027

出　　处：《电工技术学报》2003年第3期102-106,58,共6页Transactions of China Electrotechnical Society

基　　金：国家重点基础研究专项经费项目 (G19980 2 0 3 10 ) ;国家自然科学基金资助项目 (5 0 2 770 3 4)

摘　　要：分析了基于电压源换流器 (VSC)的高压直流输电系统的有功及无功控制原理 ,并以此设计出两端三电平VSC的控制器 ,控制器设计中采用了PI调节器和空间矢量PWM技术 ,并通过时域数字仿真验证了所设计控制器的优越性。This paper discusses the fundamental principles of the active and reactive power control for three-level VSC(Voltage Source Converter)based HVDC system The three-level converter structure is employed to enhance transmission capacity of the VSC-HVDC system.With the proposed three-level VSC-HVDC system,the corresponding control strategy is presented.Based on this control strategy,appropriate controllers using PI controllers and space vector PWM(SVPWM)technique are designed to control the active and reactive power at each end station.Digital simulation is done to verify the validity of the proposed control strategy and controllers.

关 键 词：电压源换流器 HVDC 三电平换流器 电压空间矢量PWM 

分 类 号：TM721.2[电气工程—电力系统及自动化]