A Review on Optimal Power Flow Solutionsunder Variable Load

Abstract

This paper reviews the optimal power flow solutions under variable load conditions. In this article we review the recent trend towards non-deterministic (random) search techniques and hybrid methods for OPF and give the review conclusions. These methods have become popular because they have a theoretical advantage over the deterministic methods with respect to handling of non convexity, dynamics, and discrete variables. Present commercial OPF programs can solve very large and complex power systems optimization problems in a relatively less time. In recent years many different solution methods have been suggested to solve OPF problems. The review contributes a comprehensive discussion of specific optimization techniques that can be applied to OPF Solution methodology.