交直流互联系统区间振荡广域阻尼控制系统设计  

Design of wide-area damping control system for inter-area oscillations in AC/DC hybrid power system

作　　者：王彤[1] 马静[1,2] 杨奇逊[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]美国弗吉尼亚理工大学电气与计算机系,黑堡市弗吉尼亚州24061

出　　处：《电力系统保护与控制》2012年第8期30-37,89,共9页Power System Protection and Control

基　　金：国家自然科学基金项目(50907021;50837002);'111'引智计划(B08013);中央高校基本科研业务费专项资金项目(11MG01;09QX64);加利福利亚能源委员会公共利益能源研究项目(TRP-08-06)~~

摘　　要：针对交直流互联系统区间振荡问题,构建了基于特征值转移因子理论的统一协调广域阻尼控制方案。首先,提出了能够反映多维振荡模式转移关系的非负定特征值转移因子矩阵,推导了能够统一协调各直流附加控制器的最优控制输入向量。然后,根据特征值转移因子矩阵的特征,利用可控性指标选择合适的控制器落点,同时利用贡献因子优选反馈信号。对美国西部电网频域和时域仿真结果表明,广域阻尼控制系统能够有效协调多个直流附加控制器,统一将不稳定区域的多个振荡模式快速、平稳地转移到稳定区域,同时该系统在通信延时、信号缺失以及参数不确定性等情况下均具有良好的鲁棒性。Eigenvalues shifted factor based wide-area damping control system is proposed for the inter-area oscillations in AC/DC hybrid power system. Firstly, nonnegative eigenvatues shifted factor matrix with respect to the shifting of multi-dimension modes are presented. Detail derivation of optimum input vector coordinating DC additional controllers are proposed. Then the optimum locations for controllers are chosen by controllability according to the characteristic of eigenvalues shifted factor. The contribution factors are proposed to select the most effective feedback signals. The simulation results of Western Electricity Co-ordination Council （WECC） demonstrate that wide-area damping control system can coordinate multiple DC additional controllers to move the dominant modes to stable area. Meanwhile, the robustness of wide-area damping control system is tested in the conditions of time delay, loss of signals and uncertainty of models.

关 键 词：区域间低频振荡 特征值转移因子 直流附加控制 PMU 鲁棒性 

分 类 号：TM712[电气工程—电力系统及自动化]