SOS Based Solution for Optimization of Indian Power System

Abstract

This paper proposes a Symbiotic Organisms Search (SOS) algorithm based solution to optimize the control variables simultaneously to optimize the power system real power loss and voltage stability limit. This issue can be mathematically formulated as a problem of nonlinear equality and inequality limited optimization, with an objective function integrating real power loss and voltage stability limit. The problem formulation included transformers taps, unified power flow controller and its parameters as control variables. The efficacy of the proposed algorithm has been tested on Indian 24-bus system. The simulation results obtained with the proposed algorithm are compared with the real coded genetic algorithm (RCGA) for a single objective of minimizing real power loss and multi-objective minimization of real power loss and maximization of voltage stability. Results from simulation demonstrate the ability of the proposed algorithm in solving the optimization problem.