Load frequency control of hybrid power system using modified disturbance rejection controller

Abstract

This study reports the load frequency control (LFC) of a hybrid power system (HPS) assimilated with electric vehicle (EV) and renewable energy sources (RES). The inclusion of applicable system non linearities and intermittency in renewable sources in addition to EVs leads the power system to complexity, though more realistic. A healthy controlling scheme is the immediate requirement for a present power system. In this respect, a robust disturbance-rejection based proportional-integral (DR-PI) controller is explored for dynamic control of HPS. The proposed DR-PI controller’s domination is recognized by comparing it with other already proposed secondary controllers in literature. Eigen-value analysis is used to validate the stability of the developed HPS. The influence of EVs on system dynamic stability is also explored.