期刊
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
卷 33, 期 3, 页码 699-707出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijepes.2010.12.027
关键词
Load frequency control; Robust control; Type-2 fuzzy controller; Generation Rate Constraint (GRC)
The Load Frequency Control (LFC) problem has been a major subject in electrical power system design/operation. LFC is becoming more significant recently with increasing size, changing structure and complexity in interconnected power systems. In practice LFC systems use simple Proportional Integral (PI) controllers. As the PI control parameters are usually tuned, based on classical approaches. Moreover, they have fixed gains; hence are incapable of obtaining good dynamic performance for a wide range of operating conditions and various load changes, in multi-area power system. Literature shows that fuzzy logic controller, one of the most useful approaches, for utilizing expert knowledge, is adaptive in nature and is applied successfully for power system stabilization control. This paper proposes a Type-2 (72) fuzzy approach for load frequency control of two-area interconnected reheat thermal power system with the consideration of Generation Rate Constraint (CRC). The performance of the Type-2 (12) controller is compared with conventional controller and Type-1 (Ti) fuzzy controller with regard to Generation Rate Constraint (CRC). The system parametric uncertainties are verified by changing parameters by 40% simultaneously from their typical values. (c) 2011 Elsevier Ltd. All rights reserved.
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