Special Issue Article Open Access

Automatic Generation Control in Restructured Power System with Wind Integrated System

Abstract

This paper presents the analysis of load frequency control (LFC) of a deregulated two-area power system with Doubly Fed Induction Generators (DFIGs) integrated into both the areas. The deregulation of power system has led to develop the new companies for generation, transmission and distribution of power. To study the effects of the bilateral contracts of companies on the system dynamics, the conventional two-area power system is modified. The LFC becomes even more challenging when wind generators are also integrated into the system in deregulated environment and also creates highly competitive and distributed control environment. The overall inertia of the system reduces during disturbances, as the wind unit does not provide inertia and isolates from the grid. To provide inertial support to the system through modified inertial control scheme and arrests the frequency deviation after disturbance by DFIGs integration. To improve the frequency response of the system the kinetic energy of the wind turbine is drawn as the inertial control responds to frequency variations. The optimal values of the speed control parameters of the DFIG-based wind turbine have been obtained using Particle Swarm Optimization (PSO) technique used to enhance the participation of the doubly fed induction generator (DFIG) in the frequency control.

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