Adaptive Partcle Swarm Optimization Pi Contro...

Adaptive Partcle Swarm Optimization Pi Controller Tuned Load Frequency Control

Author Name : S. Rajasomashekar, M. Udhaya

ABSTRACT

The primary concern in the designing of the interconnection of two power systems is the control of load frequency. It becomes more pronounced when the size and structure of the power system increase. It is necessary to maintain the frequency and power flow in the tie line, where two power systems are interconnected, without frequency deviation even under severe load disturbances. In this work, anAdaptive Particle Swarm Optimization PI Controller(APSO PI) has been proposed for solving the frequency variation problems arising due to uncertainty in loads in two interconnected power systems. The deviations in the frequency can be minimized by tuning the proposed controller. The time domain parameters and the error performance values are reduced by this modern intelligent PI controller. Two identical power plants are considered for the study. The error performance indices such as Integral Time Absolute Error (ITAE), Integral Square Error (ISE) and Integral Absolute Error (IAE) parameters. The proposed controller is tested by a sensitivity analysis of the change in system time constant parameter namely T_G (Governor). Hence, this controlled system is developed and simulated by using MATLAB. The performance of APSO PI is superior compared to the results obtained from Conventional PI controller.

Keywords: Automatic Generation Control, PI controller, Load Frequency Control, Adaptive Particle Swarm Optimization