Abstract：The model of power system with multiple time delays is constructed for wide area measurement information with different transmission distances. The damping controller signals are divided into two parts: The first level of control is derived from local signals without time delays. The second level of control is supplied by a coordinator using global states with different multiple time delays. The delay fractioning based on Lyapunov-Krasovskii approach is used to derive a delay-dependent steady stability criterion, and the criteria of stability are formulated as feasibility problems of linear matrix inequality(LMI). The model is reduced by the model reduction method. The time-delay output feedback control is realized for wide-area power system. Meanwhile, the maximum delay times is calculated. In addition, the relationship between the delay fractioning of the criteria and the damping controller is discussed. Finally, taking a two-area four-machine power system as an example, the results of simulation in time-domain show that performance of the proposed controller in this paper is effective.
古丽扎提·海拉提, 王杰. 多时滞广域测量电力系统稳定分析与协调控制器设计[J]. 电工技术学报, 2014, 29(2): 279-289.
Gulizhati Hailati, Wang Jie. Multiple Time Delays Analysis and Coordinated Stability Control for Power System Wide Area Measurement. Transactions of China Electrotechnical Society, 2014, 29(2): 279-289.
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