Designing and Simulation of Load Frequency Control of Four Area Interconnected Power System Using ANN and Tuned PID Controller

Abstract

In an interconnected power system, any little sudden load change in any of the regions causes the change of the frequencies of every zone. Additionally there's the variance of power in the tie line. Variable and uncertain power yield presents modern challenges to power system frequency stability. To ensure the secure and stable operation of power systems, the control for frequency deviation is examined in this work. Load Frequency Control (LFC) are used, to preserve the real frequency and the desired power yield (Megawatt) within the interconnected control system and to control the change in tie-line between control areas. So, an LFC is essentially a suitable control system for an interconnected power system, capable of bringing the frequencies of each area and the tie line powers back to unique set point values or exceptionally close to set point values after a load change. Usually accomplished through the use of conventional controllers such as PID. But the conventional controllers have a few demerits; they are exceptionally moderate in operation control. With the diverse power system component, it is exceptionally difficult to decide the gain of the PID setting according to changes within the working point. The advanced control (ANN) system features a part of the advantage over an ordinary PID controller. In this thesis work, the advanced control strategy PID control technique has been connected with ANN controller for LFC of four area power systems. The hybrid of PID and ANN controller is able of giving better reactions and is appropriate under different nonlinearities and implemented using MATLAB Simulink.