Hydrothermal Scheduling using Hybrid Algorithm (T-0405) (MFN 5056)

Abstract

The basic purpose of hydrothermal scheduling is to reduce the cost of thermal plants. To achieve this goal one has to meet certain constraints of hydro and thermal plants. In this regard one has to satisfy different constraints of the hydraulic and thermal power systems. In Short term hydro thermal scheduling load demand follows a periodic variation for one day or a week therefore interval for this range small. For such a short interval the head may be taken constant. The amount of water required for the short range problem is determined by the long range problem [1]. If all the constraints are considered then the short term hydrothermal scheduling (STHS problems becomes complex and nonlinear. The problem has been resolved by numerous traditional and non-conventional procedures. Some of them include random integral programming (MIP) [2], dynamic programming (DP) [3], [4], gradient search method (GSM) [5], particle swarm optimization (PSO) [6], “Quasi-oppositional teaching learning based optimization” [7], “colonel real-coded quantum-inspired evolutionary algorithm” [8] and multi-objective differential evolution method for STHS [9]. In the proposed method following objectives are achieved. A new algorithm is introduced that can minimize the cost of objective function. The proposed algorithm follows the constraints given. Algorithm is capable of identifying the difference between local and global maxima. It is capable of successfully clearing the sensitivity analysis and does not has decreased diversity problem. It has good processing time as compare to the current algorithms.