Delay-dependent Wide-area Damping Controller Synthesis Approach Using Jensen’s Inequality and Evolution Algorithm  

作　　者：Wencheng Wu Xiaoru Wang Hong Rao Baorong Zhou 

机构地区：[1]the School of Electrical Engineering,Southwest Jiaotong University,Chengdu,Sichuan Province 610021,China [2]the Southwest Electric Power Design Institute,Sichuan Province 610056,China [3]the State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China

出　　处：《CSEE Journal of Power and Energy Systems》2023年第5期1774-1785,共12页中国电机工程学会电力与能源系统学报（英文）

基　　金：supported by the National Key Research and Development Program of China(2016YFB0901001).

摘　　要：A time-delay-dependent wide-area damping controller synthesis approach,based on Jensen’s integral inequality and evolution algorithm,is developed to suppress the adverse effect of time delay on the supplemental control of high-voltage direct current(DC)transmission systems.Initially,the state-space model of hybrid AC/DC systems with time delay is derived and the delay-dependent criteria for the stability of the closed-loop system are provided based on Jensen’s integral inequality.Subsequently,initial solutions are randomly generated to overcome the difficulty of solving the nonlinear matrix inequality.Finally,the time-delay stability upper bound of the controller is optimized using the differential evolution algorithm.In comparison to popular time-delay stable controller design methods,such as the free-weighting-matrix approach,the proposed method based on output feedback realization requires fewer decision variables and is more suitable for large-scale hybrid AC/DC systems.Three examples are introduced to verify the effectiveness of the proposed method.

关 键 词：Damping suppression delay-dependent control differential evolution algorithm Jensen’s inequality output feedback time-varying delay wide-area control 

分 类 号：TM712[电气工程—电力系统及自动化] TM44