基于ERGA和混合H_2/H_∞方法的交直流并联系统分散控制  

Design of decentralized controllers for parallel AC-DC system based on effective relative gain array and mixed H_2/H_∞ control

作　　者：赵睿 卢斯煜 涂亮 柳勇军 

机构地区：[1]南方电网科学研究院,广东广州510000

出　　处：《电力系统保护与控制》2016年第24期44-51,共8页Power System Protection and Control

基　　金：南方电网公司科技项目(CSGTRC-K132012)

摘　　要：提出一种基于有效相对增益阵列和混合H_2/H_∞方法的交直流并联系统分散控制方法。该方法首先根据有效相对增益阵列(ERGA)指标和总体最小二乘-旋转不变技术确定附加阻尼控制器安装地点和反馈信号配对方案,再基于混合H_2/H_∞控制理论设计分散控制器,抑制交直流并联输电系统中存在的区域间和区域内低频振荡。有效相对增益阵列指标考虑了传递函数矩阵的动态和静态过程,混合H_2/H_∞控制理论可计及控制代价和系统的不确定性。EMTDC/PSCAD实例仿真证明了控制器的有效性。The HVDC and excitation decentralized controllers for parallel AC-DC system based on effective relative gain array and mixed H2/H∞ control are proposed. The results of effective relative gain array（ERGA） which combines the advantage of both relative gain array and dynamic relative gain array studies suggest the effect of control loop configurations. Based on the ERGA analysis and multi objective mixed H2/H∞ control synthesis, the designed controllers which simultaneously consider the output disturbance rejection, ensure the robustness against model uncertainties, and reduce the control cost could provide efficient damping against the inter-area and local modes of oscillations. The effectiveness of the new design is demonstrated with EMTDC/PSCAD simulation.

关 键 词：高压直流输电系统 有效相对增益阵列 分散控制 混合H2/H∞控制 

分 类 号：TM721.3[电气工程—电力系统及自动化]