Real Power Minimization with Voltage Profile Enhancement Using Series and Shunt FACTS Controllers – Sine Cosine Algorithm Approach

Abstract

Proper management of reactive power resources is essential for the secure and stable functioning of power systems in the standpoint of voltage stability. The main purpose of optimal reactive power dispatch (ORPD) is to detect the settings of control variables such as the voltage rating of generators, reactive power injection of VAR compensators and tap ratios of the tap setting transformers in order to decrease the grid congestion with one or more objective of minimizing the active power loss for a fixed economic power schedule while taking on a given set of constraints. In this paper, Flexible AC Transmission System (FACTS) controllers named as Static Var Compensator (SVC) and Thyristor Controlled Series Capacitor (TCSC) are added to the conventional ORPD problem for active power loss minimization with voltage profile improvement. As well, this report presents the application of sine cosine algorithm (SCA) to find the optimal solution of ORPD (with and without FACTS devices) of power arrangement with different examination systems (Standard IEEE 14-bus, IEEE 57-bus and IEEE 118-bus) with distinct cases such as minimization of active power losses and improvement of voltage profile. Simulation results demonstrate the high tone and accuracy of the proposed algorithm, and considering the quality of the solution obtained, the proposed algorithm appears to be efficient and robust to solve the ORPD problem (with and without FACTS devices) comparing with existing literatures.