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向无源网络供电的VSC-HVDC系统控制策略
引用本文:邹超,王奔,李泰.向无源网络供电的VSC-HVDC系统控制策略[J].电网技术,2009,33(2):84-88.
作者姓名:邹超  王奔  李泰
作者单位:邹超,ZOU Chao(西南交通大学电气工程学院,四川省成都市,610031);王奔,李泰,WANG Ben,LI Tai(西南交通大学电气工程学院,四川省,成都市,610031)  
摘    要:在同步旋转坐标系下,利用电压源型高压直流输电(voltage source converter based high voltage DC,VSC-HVDC)的暂态数学模型,提出了一种向无源网络供电的VSC-HVDC系统新型控制策略。基于非线性系统反馈线性化控制的逆系统方法,推导了VSC-HVDC的逆系统模型,构造了伪线性系统,实现了对VSC-HVDC系统有功功率和无功功率的解耦。采用极点配置方法对该伪线性系统进行了综合,设计了控制器,并对反馈线性化中重要的隐动态问题进行了讨论,保证了控制系统的稳定性。仿真结果表明,该控制器具有较好的动态性能。

关 键 词:极点配置  电压源型高压直流输电(VSC-HVDC)  逆系统理论  隐动态
收稿时间:2007-09-28

Control Strategy of VSC-HVDC System Supplying Power for Passive Networks
ZOU Chao,WANG Ben,LI Tai.Control Strategy of VSC-HVDC System Supplying Power for Passive Networks[J].Power System Technology,2009,33(2):84-88.
Authors:ZOU Chao  WANG Ben  LI Tai
Affiliation:School of Electrical Engineering;Southwest Jiaotong University;Chengdu 610031;Sichuan Province;China
Abstract:In synchronous rotating coordinate system, by use of the transient mathematical model of voltage source converter-high voltage DC (VSC-HVDC) system a new control strategy of VSC-HVDC that supplies power for passive networks is proposed. Based on the inverse system method for feedback linearization control of nonlinear system, the inverse system model of VSC-HVDC is derived and corresponding pseudo-linear system is constructed, thus the decoupling of active power and reactive power in VSC-HVDC system is implemented. Finally, the constructed pseudo-linear system is synthesized by pole assignment method and a VSC-HVDC controller is designed, and the important implicit dynamic problem in feedback linearization is researched to ensure the stability of the control system. Simulation results show that the designed VSC-HVDC controller possesses good dynamic performance.
Keywords:Pole assignment  voltage source converter based high voltage DC(VSC-HVDC)  Inverse system method  Implicit dynamic
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