Abstract：With respect to negative effects on system dynamic performance induced by time-delay of wide-area measurements, a direct iterative design approach for power system wide-area supplementary inter-area damping controller is proposed. A matrix inequality theorem based on state feedback as a asymptotic stability criterion on time-delay system is deduced from a known linear matrix inequality (LMI) theorem. The non-linear matrix inequality in the theorem is transformed into linear matrix inequality by variable substitution method. Then the damping controller design is converted to a cone complementarity problem subjecting to linear matrix inequalities and solved by iteration. The approach can directly obtain state feedback control matrix and has good convergence. Simulation results of a test system show that the wide-area damping controller is insensitive to time-delay to some degree and can damp inter-area low frequency oscillation very well.
罗珂, 刘玉田, 叶华. 计及时滞影响的广域附加阻尼控制[J]. 电工技术学报, 2010, 25(11): 136-141.
Luo Ke, Liu Yutian, Ye Hua. Wide Area Power System Damping Controller Considering Time-Delay. Transactions of China Electrotechnical Society, 2010, 25(11): 136-141.
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