A REVIEW OF NON-CLASSICAL LOAD FREQUECNCY CONTROL (LFC) SCHEMESFOR MULTI-AREA INTERCONNECTED POWER SYSTEMS (MAIPS)

Abstract

Load frequency control (LFC) is a critical factor in the design of an electrical power system. To obtain and sustain a steady state operation of a power system for the delivery of quality power, generated power must at all times equal the load demand plus the losses. To achieve this state a Load frequency control system also known as Automatic Generation Control system is employed in an interconnected power system. The load-frequency control (LFC) is used to maintain the balance between load and generation in each control area as well as maintain the tie-line power flow in a multi area interconnected power system (MAIPS). The main goal of LFC is to minimize the transient deviations and steady state error to zero in advance. In this paper, a literature review of some non-classical LFC schemes employed by researchers for multi area interconnected power system (MAIPS), using different techniques is presented, some advantage sand drawbacks of the reviewed schemes highlighted, comparison of schemes stated.