基于PR、PI联合控制的VSC-HVDC系统研究  

Research of VSC-HVDC Systems Based on PR & PI Joint Control

作　　者：罗德荣[1] 宋辉[1] 廖武[1] 饶志蒙 朱广辉 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082 [2]湘潭牵引电气设备研究所有限公司,湖南湘潭411101

出　　处：《控制工程》2015年第4期625-631,共7页Control Engineering of China

基　　金：科技部国际合作重点专项(2011DFA62240)

摘　　要：针对传统的电压源型直流输电(VSC-HVDC)的控制方法需要引入角度信息、复杂的坐标变换以及电压前馈补偿等缺点,提出PR(比例谐振)、PI(比例积分)联合的方法实现VSC-HVDC的控制。该方法不仅减少了系统的采样个数,降低了控制器设计难度,而且能够有效的抑制逆变侧输出电流中的直流分量,提高系统的稳定性和抗干扰能力。在MATLAB/Simulink仿真软件下完成了VSC-HVDC系统的功率跃变和故障仿真,其结果表明,所提控制方法具有较强的动态稳定性和较强的抗干扰能力。最后通过功率跃变实验验证了该控制方法的有效性。In view of the traditional voltage source model of HVDC （VSC-HVDC） control method needs to introduce the angle information, complex coordinate transformation and voltage feed forward compensation, this paper puts forward a control method using joint PR （proportional-resonant） and PI （proportion-integral） controller, which has the advantages of reducing the number of system samples, reducing the difficulty of controller design, ensuring the error free tracking of physical quantities, inhibiting DC component of the output current and enhancing the stability and anti-interference ability of the system. Power transitions and fault simulation of the VSC-HVDC system is completed under MATLAB/Simulink. The results show that the control method has strong stability and anti-interference ability. At last, the effectiveness of the proposed method is verified through the power step experiment.

关 键 词：电压源型直流输电 坐标变换 比例谐振 比例积分 双环控制 

分 类 号：TM721[电气工程—电力系统及自动化]