Parallel tabu search algorithm for constrained economic dispatch

Ongsakul, Weerakorn; Dechanupaprittha, Sanchai; Ngamroo, Issarachai

doi:10.1049/ip-gtd:20040460

Cited by 19 publications

(9 citation statements)

References 7 publications

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“…The authors apply a parallel search technique to reduce the dependence of the convergence rate on the initial condition. A parallel tabu search algorithm, implemented on a system with 32 processors, is proposed in . The solution to the ED (quadratic and nonsmooth) formulation with ramp rate limits uses a neighborhood decomposition technique to split the search space into subspaces (subneighborhoods) and a competitive selection subroutine to update the best solution achieved by search subspaces.…”

Section: Methodologiesmentioning

confidence: 99%

Recent methodologies and approaches for the economic dispatch of generation in power systems

Ciornei

Kyriakides

2012

Int. Trans. Electr. Energ. Syst.

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The new tendencies in the power system organization and the fast-changing technologies in the power industry dictate the need to keep track of the international experience and activities in the field of the modern economic dispatch problem. The goal of this paper was to provide a detailed account for papers published after 1990, the year that saw the beginning of major transformations in the power system organization. A comprehensive survey on mathematical formulations and a general background of methods, analyses, and developments in the field of economic dispatch is presented for the past 20 years based on more than 150 publications. The research literature in the field is classified into sections covering economic dispatch in both regulated and deregulated (reregulated) energy markets and where variable, partial predictable electricity generation is part of the generation portfolio. A database of the most common test systems used in the literature to test different economic dispatch methodologies is also provided.understanding of the problem and of the progress made to date, as well as for the electric utility industry to choose the most relevant solutions for their systems.The idea behind the ED problem is that at the central power control center the load changes are continuously monitored (in real time) and the dispatcher regulates generation (typically only real power is considered) to match the total power generation with the total power demand. This generation regulation is performed in such a manner as to minimize the operating cost while satisfying all the operating constraints. Such constraints may include the load balance, the transmission constraints, the spinning reserve of the system, multiple emission requirements, and minimum upper and lower limits [9][10][11][12]. Important aspects of this optimization problem are that the generation cost of each individual unit is not proportional to the generation level of the respective unit and that the power systems are geographically spread out, and thus, the transmission losses are dependent on the generation and demand patterns and their flow within the system.In deregulated energy markets, the vertically integrated utilities serving their own load are replaced by competing entities in a horizontally integrated environment. The GENCOs are no longer responsible for meeting the daily load cycle, which is now the system operator's (SO) responsibility, but the net sum of a set of transactions is the one that determines the shape of a GENCO's profile. Thus, from the view point of GENCOs, the ED problem may be formulated as a maximization of the profit [11][12][13] or as a minimization of the cost incorporating power wheeling costs [14,15]. Further to the classical formulation of the ED problem, reactive power dispatch may also be considered.According to the newly established regulations toward climate change in many European countries and in the USA [16,17], variable renewable energy sources (RES), such as wind and solar, is expected to increase its penetrati...

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Section: Methodologiesmentioning

confidence: 99%

Recent methodologies and approaches for the economic dispatch of generation in power systems

Ciornei

Kyriakides

2012

Int. Trans. Electr. Energ. Syst.

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“…This evaluation of reliability is based on modern methods and mathematical techniques as observed above: technique of UGF (or U-transform) in [10][11][12]. The latter was applied for the estimate and the optimization of the solidity of the power circuit in [13,14], and interpret an occurring prolongation of function one ordinary moment [15]. The UGF, in our case, of a discrete variable E is thus given polynomial:…”

Section: Description Assessment Of Reliabilitymentioning

confidence: 99%

An Efficient Bat Algoritm for Series-parallel Power System Optimization

Amami¹,

Zeblah²,

Belafdal³

et al. 2016

J Electr Electron Syst

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Optimization techniques tend towards new methods, these methods are based on the nature of the impact thereof on the lifestyle of human beings, engineers working on new optimization approaches to achieve the objective of maximizing reliability of the electric current and with the minimal cost which means that our structure of network must answer this requirement, a new approach proves to solve major problems using a heuristic méta-which is called algorithm of beater (BA).

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“…A parallel TS for determining ramp rate constrained ED for generating units with nonmonotonically and monotonically increasing incremental cost functions was proposed (Ongsakul et al, 2004). To parallelize TS efficiently, neighborhood decomposition was performed to balance the computing load, and competitive selection was used to update the best solution reached among subneighborhoods.…”

Section: Load Forecasting and Economic Dispatchmentioning

confidence: 99%