Optimal Design of Load Frequency Control of Single Area System

Abstract

In a single-area power system, if a load demand changes randomly, the frequency varies. The main aim of load frequency control (LFC) is to minimize the transient variations and to make sure that the steady state error is zero. Many modern and robust control techniques are used to implement an authentic controller. The objective of these control techniques is to produce and deliver power reliably by maintaining both frequency and voltage within the threshold range. As real power changes, system frequency gets affected and reactive power is dependent on variation in voltage level. Hence real power and reactive power are controlled separately. The role of automatic generation control (AGC) in power system operations under normal operating conditions is analysed. To study the reliability of various control techniques of LFC of the proposed system through simulation in MATLAB-Simulink.