Coordinated Robust PID-based Damping Control of Permanent Magnet Synchronous Generators for Low-frequency Oscillations Considering Power System Operational Uncertainties  

作　　者：Rehan Sadiq Zhen Wang Chi Yung Chung Deqiang Gan Cunzhi Tong 

机构地区：[1]College of Electrical Engineering,Zhejiang University,Hangzhou 310058,China [2]The Hong Kong Polytechnic University,Hong Kong,China [3]State Grid Zhejiang Electric Power Company,Hangzhou 310007,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第4期1042-1051,共10页现代电力系统与清洁能源学报（英文）

基　　金：supported by the Major Program of National Natural Science Foundation of China(No.U2166601);the General Program of National Natural Science Foundation of China(No.52077196).

摘　　要：In recent years, with the growth of wind energy resources,the capability of wind farms to damp low-frequency oscillations(LFOs) has provided a notable advantage for the stabilityenhancement of the modern power grid. Meanwhile, owingto variations in the power system operating point (OP), thedamping characteristics of LFOs may be affected adversely. Inthis respect, this paper presents a coordinated robust proportional-integral-derivative (PID) based damping control approachfor permanent magnet synchronous generators (PMSGs)to effectively stabilize LFOs, while considering power system operationaluncertainties in the form of a polytopic model constructedby linearizing the power system under a given set ofOPs. The proposed approach works by modulating the DC-linkvoltage control loop of the grid-side converter (GSC) via a supplementaryPID controller, which is synthesized by transformingthe design problem into H-infinity static output feedback(SOF) control methodology. The solution of H-infinity SOF controlproblem involves satisfying linear matrix inequality (LMI)constraints based on the parameter-dependent Lyapunov functionto ensure asymptotic stability such that the minimal H-infinityperformance objective is simultaneously accomplished forthe entire polytope. The coordinated damping controllers forthe multiple wind farms are then designed sequentially by usingthe proposed approach. Eigenvalue analysis confirms the improveddamping characteristics of the closed-loop system forseveral representative OPs. Afterward, the simulation results, includingthe performance comparison with existing approaches,validate the higher robustness of the proposed approach for awide range of operating scenarios.

关 键 词：Permanent magnet synchronous generator(PMSG) low-frequency oscillation(LFO) proportional-integralderivative(PID) robust control H-infinity static output feed-back control linear matrix inequality(LMI) 

分 类 号：TM341[电气工程—电机]