Optimized Damping Control of Power System Using Partial Left Eigenstructure Assignment
Zhong Qishu1, Tang Zhijun2, Jin Tao1
1. College of Electrical Engineering and Automation Fuzhou University Fuzhou 350116 China; 2. State Grid Fujian Electric Power Research Institute Fuzhou 350007 China
Abstract：This paper presents an optimized design of power system damping controller based on partial eigenstructure assignment in linear systems. Eigenvalue and eigenvector of critical oscillating modal are set simultaneously using partial left eigenstructure assignment (PLEA). Extra control degrees of freedom is assigned to partial left eigenvector for improving dynamical damping performance of power system. A dynamical compensator type controller is introduced to replace traditional power system stabilizer (PSS). In this way, additional control freedom is increased and the requirement of inputs to the controller can be fulfilled using PLEA. In the last, weighting multi-objective sub-functions are built, and the parameter design of damping controller can be formulated as a single-objective nonlinear programming problem and solved using group search optimizer (GSO). Simulation results of IEEE-39 system model under multiple operating conditions demonstrate that the controller designed using proposed PLEA can efficaciously damp low-frequency oscillation in power system, yielding a better control performance and robustness in comparison than that of traditional PSS designed using residues method.
仲启树, 唐志军, 金涛. 基于部分左特征结构配置的电力系统优化阻尼控制[J]. 电工技术学报, 2018, 33(13): 3012-3022.
Zhong Qishu, Tang Zhijun, Jin Tao. Optimized Damping Control of Power System Using Partial Left Eigenstructure Assignment. Transactions of China Electrotechnical Society, 2018, 33(13): 3012-3022.
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2018, Vol. 33 
