期刊
ENERGY CONVERSION AND MANAGEMENT
卷 49, 期 2, 页码 193-204出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2007.06.021
关键词
load frequency control; H-infinity control; mixed H-2/H-infinity control; static output feedback control; robust performance; PI; linear matrix inequalities
In this paper, two robust decentralised proportional integral (PI) control designs are proposed for load frequency control (LFC) with communication delays. In both methodologies, the PI based LFC problem is reduced to a static output feedback (SOF) control synthesis for a multiple delay system. The first one is based on the optimal H-infinity control design using a linear matrix inequalities (LMI) technique. The second control design gives a suboptimal solution using a developed iterative linear matrix inequalities (ILMI) algorithm via the mixed H-2/H-infinity control technique. The control strategies are suitable for LFC applications that usually employ PI control. The proposed control strategies are applied to a three control area power system with time delays and load disturbance to demonstrate their robustness. (C) 2007 Elsevier Ltd. All rights reserved.
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