Short-term combined economic emission hydrothermal scheduling (CEES) is a bi-objective problem: (i) minimizing fuel cost and (ii) minimizing pollutant emission. In this paper, quadratic approximation based differential evolution with valuable trade off approach (QADEVT) has been developed to solve the bi-objective hydrothermal scheduling problem. The practical hydrothermal system possesses vari...

Paper presents predator–prey based optimization (PPO) technique to obtain optimal generation scheduling of short-term hydrothermal system. PPO is a part of the swarm intelligence family and is capable to solve large scale non-linear optimization problems. PPO based algorithm combines the idea of particle swarm optimization concept with predator effect that helps to, maintain diversity in the sw...

0196-8904/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.enconman.2010.02.006 * Corresponding author. Tel.: +86 02787543127. E-mail address: [email protected] (J. Zhou). The short-term hydrothermal generation scheduling (SHGS) is a complicated nonlinear optimization problem with a set of operational and hydraulic constraints. A new approach is presented in this paper for solving the sh...

Different optimization methods have been applied to solve hydrothermal scheduling problems. This study reviews some of the common optimization methods and algorithms their strengths and weaknesses. The study found out that with time, old methods are improved upon and novel methods are developed to provide for more efficiency, faster convergence, robustness, and adaptability.

Lagrangian relaxation has been widely used in hydrothermal scheduling. Complicating constraints are relaxed by multipliers which are usually updated by a subgradient method (SGM). The SGM suffers from slow convergence caused by the non-differentiable characteristics of dual functions. This paper presents an algorithm that utilizes the Bundle Trust Region Method (BTRM) to update the multipliers ...

1423 ISSN: 2278 – 1323 All Rights Reserved © 2015 IJARCET  Abstract—This paper presents short-term fixed and variable head hydrotherml scheduling. An integrated PSO-SQP technique is applied to obtain the optimum scheduling of power generation. PSO is used as a global search optimization technique which explores the search space. Sequential quadratic programming (SQP) is used as a local search ...

This paper concerns the assessment of two methods for convex relaxation short-term hydrothermal scheduling problem. The problem is originally formulated as a mixed integer programming problem, and then approximated using both Lagrangian Linear relaxation. are quantitatively compared realistic data description Northern European power system, considering set representative days. We find that appr...

The short-term hydrothermal scheduling is a daily planning proposition in power system operation, a task which is usually more complex than the scheduling of all-thermal generation system. The classical iteration method involves time consuming three iterative loops for obtaining the optimal solution. This paper presents an analytical method for eliminating the two iterative loops of the classic...