Load Frequency Control by using Different Controllers in Multi-Area Power System Networks

Abstract

In order to ensure the Power System’s effectiveness every part requires a certain amount of control activities. In any interconnected power system, variation in load occurs, frequency variation and exchange of power of tie line show a significant difference, and to achieve the goal of zero variation in the frequency of power system as well as power flow of the tie -line, to attain the selected generating units there is use of some supporting controller/controlling action. The term "automatic generation control" refers to this control activity. The primary motive of LFC or automated generation control in a multi-area electrical system is to make frequency of every area as well as power flow of tie line constant. In this research paper, where two area power system with controllers like Integrator, PI and PID is used. After applying this three -control technique, it displays a comparison between the frequency deviation as well as change in the power flow of tie line of the AGC of two-area system by taking random controller value. AGC of two area electrical power system using controllers like Integrator, PI and PID in MATLAB/SIMULINK software is discussed. When Automatic generation control used properly, is essential for maintaining the frequency within acceptable bounds and adapting to changes in the power load. The most precise and reliable controller is a PID controller that controls process variables using a control loop feedback mechanism. This paper compares the stability of the system by using controller like Integrator, PI, PID by hit and trial method on different load.