Title: A variable structure adaptive fuzzy logic stabiliser for a two-area load frequency control problem
Author: Khaled A. El-Metwally
Address: Department of Electrical Power and Machines, Cairo University, Giza, 12211, Egypt
Abstract: This paper presents a variable structure adaptive fuzzy logic control approach for designing a decentralised controller for load frequency control of interconnected power areas. The proposed variable structure adaptive fuzzy logic load frequency controller (AFLFC) is designed to improve the dynamic performance of the frequency and tie-line power flow under a sudden load change in the power areas. The AFLFC provides a stabilising signal to work in conjunction with the original integral controller. The effect of generation rate constraint (GRC) for both areas has been considered in the controller design. Time-domain simulations are performed to demonstrate the effectiveness of the proposed AFLFC. The simulation results show that the proposed AFLFC provides good damping and reduces the overshoot of the different area frequency deviations and also reduces the interchanged tie power.
Keywords: load frequency control; LFC; fuzzy logic; adaptive fuzzy control; variable structure; decentralised control; controller design; interconnected power areas.
Int. J. of Modelling, Identification and Control, 2010 Vol.9, No.1/2, pp.168-175
Available online: 01 Apr 2010