A Fuzzy Based Improved Intelligent Controller for Automatic Generation Control

H.D. Mathur*
Electrical and Electronics Engineering Group
Birla Institute of Technology and Science, Pilani
Rajasthan (India)-333031
E-mail:    mathurhd@gmail.com

H.V. Manjunath
Electrical and Electronics Engineering Group
Birla Institute of Technology and Science, Pilani
Rajasthan (India)-333031
E-mail:    hvmanju@bits-pilani.ac.in

* Corresponding Author

 
ABSTRACT
In this paper, a fuzzy logic controller is proposed for automatic generation control, which is also referred as load frequency control problem of electrical power system. The fuzzy controller is constructed as a set of control rules, and the control signal is directly deduced from the knowledge base and the fuzzy inference. The study has been designed for a two area interconnected power system with generation rate constraints. A comparison among a conventional PI controller, some other fuzzy gain scheduling controllers and the proposed fuzzy controller is presented and it has been shown that proposed controller could generate the best dynamic response following a step load change. Robustness of proposed controller is achieved by analyzing the system response with varying system parameters.

Index Terms—Fuzzy logic controller, Generation Rate Constraint, Intelligent Controllers, Load Frequency Control, Two-area power system.


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