Networked Predictive Wide-Area Damping Control Considering Communication Delays
Yao Wei1, Wen Jinyu1, Sun Haishun1, Cheng Shijie1, Jiang Lin2
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China; 2. The University of Liverpool Liverpool L693GJ UK
Abstract：With respect to the some problems of wide-area control power system, such as operating condition variation and communication delays et. al, a wide-area damping controller (WADC) based on networked predictive control (NPC) is proposed. The NPC, based on the modified generalized predictive control (GPC), increase networked delay compensator (NDC) to compensate the communication delays. Besides, the controlled auto-regressive moving average (CARMA) model, which is used as predictive model, is identified online using the recursive least-squares (RLS) with a variable forgetting factor algorithm. The simulation results of the two-area four-machine power system show that the proposed WADC can not only improve the damping performances of the inter-area oscillation, but also compensate both the constant and random communication delays effectively.
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2012, Vol. 27 
