Application of Linear Quadratic Gaussian and Coefficient Diagram Techniques to Distributed Load Frequency Control of Power Systems

Applied Sciences

Tarek Hassan Mohamed²  Ahmed A. Zaki Diab¹  Mahmoud M. Hussein²  Minho Shin³ 

[1] Department of Electrical Engineering, Faculty of Engineering, Minia University, Main road, 61111 Minia, Egypt; E-Mail:;Department of Electrical Engineering, Faculty of Energy Engineering, Aswan University, Sahary, 81528 Aswan, Egypt; E-Mail:;Department of Electrical Engineering, Faculty of Energy Engineering, Aswan University, Sahary, 81528 Aswan, Egypt; E-Mail

关键词: load frequency control (LFC);    coefficient diagram method (CDM);    linear quadratic Gaussian (LQG);    integral control (I);    kalman filter;   

DOI  :  10.3390/app5041603

来源: mdpi

【 摘 要 】

This paper presented both the linear quadratic Gaussian technique (LQG) and the coefficient diagram method (CDM) as load frequency controllers in a multi-area power system to deal with the problem of variations in system parameters and load demand change. The full states of the system including the area frequency deviation have been estimated using the Kalman filter technique. The efficiency of the proposed control method has been checked using a digital simulation. Simulation results indicated that, with the proposed CDM + LQG technique, the system is robust in the face of parameter uncertainties and load disturbances. A comparison between the proposed technique and other schemes is carried out, confirming the superiority of the proposed CDM + LQG technique.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.