A backtracking evolutionary algorithm for power systems
| Autor: | Chung-Fu Chang, Ji-Pyng Chiou, Chin-Ju Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
education.field_of_study
Mathematical optimization Optimization problem business.industry Backtracking Computer science Population Evolutionary algorithm Control reconfiguration 02 engineering and technology Nonlinear programming lcsh:TA1-2040 020204 information systems Differential evolution Simulated annealing 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Software engineering business education lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | MATEC Web of Conferences, Vol 119, p 01046 (2017) |
| Popis: | This paper presents a backtracking variable scaling hybrid differential evolution, called backtracking VSHDE, for solving the optimal network reconfiguration problems for power loss reduction in distribution systems. The concepts of the backtracking, variable scaling factor, migrating, accelerated, and boundary control mechanism are embedded in the original differential evolution (DE) to form the backtracking VSHDE. The concepts of the backtracking and boundary control mechanism can increase the population diversity. And, according to the convergence property of the population, the scaling factor is adjusted based on the 1/5 success rule of the evolution strategies (ESs). A larger population size must be used in the evolutionary algorithms (EAs) to maintain the population diversity. To overcome this drawback, two operations, acceleration operation and migrating operation, are embedded into the proposed method. The feeder reconfiguration of distribution systems is modelled as an optimization problem which aims at achieving the minimum loss subject to voltage and current constraints. So, the proper system topology that reduces the power loss according to a load pattern is an important issue. Mathematically, the network reconfiguration system is a nonlinear programming problem with integer variables. One three-feeder network reconfiguration system from the literature is researched by the proposed backtracking VSHDE method and simulated annealing (SA). Numerical results show that the perfrmance of the proposed method outperformed the SA method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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