Siting and Sizing of Capacitors in Distribution Systems for Annual Cost Savings Using ISSA-WF

Abstract

In present days' scenario, it is obligatory for the Distribution System (DS) utilities to focus on reduction in Power Loss (P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Loss</inf> ) thereby efficiency improvement. Now-a-days many researches on cost-based power or energy loss reduction are being focused. This study presents Weight Factor based improved Salp Swarm Algorithm (ISSA-WF) for optimal placement and capacity determination of reactive power compensating device along the radial DSs which will assist in suppression of P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Loss</inf> and improvement in bus voltage with maximum net cost saving subject to satisfying equality and inequality constraints. No sensitivity index has been adopted in this work to identify the weak buses that require compensation. The efficiency of the projected method has been validated using standard IEEE 33 bus and renowned Indian 118 bus radial DSs under three different load levels. The outcomes of ISSA-WF have been compared against existing methods available in the literature under two different categories (P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Loss</inf> reduction based and P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Loss</inf> reduction with cost based). From the simulated results, it has been evidenced that ISSA-WF effectively reduces the power loss with considerable improvement in cost saving.