向无源网络供电的VSC-HVDC系统控制策略  

Control Strategy of VSC-HVDC System Supplying Power for Passive Networks

作　　者：邹超[1] 王奔[1] 李泰[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《电网技术》2009年第2期84-88,110,共6页Power System Technology

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。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 synthesizedby 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.

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 

分 类 号：TM711[电气工程—电力系统及自动化]