Optimal Phase Balancing Planning for Loss Reduction in Distribution Systems using a Specialized Genetic Algorithm

The unbalanced operation of distribution systems impairs the quality of power and increases investment and operation costs. Feeder reconfiguration and phase exchange are the two main approaches to phase balancing, the first being the most difficult to carry out due to the small number of sectionaliz...

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Autores:
Granada Echeverri, Mauricio
Gallego Rendón, Ramón Alfonso
López Lezama, Jesús María
Tipo de recurso:
Fecha de publicación:
2012
Institución:
Universidad EAFIT
Repositorio:
Repositorio EAFIT
Idioma:
spa
OAI Identifier:
oai:repository.eafit.edu.co:10784/14441
Acceso en línea:
http://hdl.handle.net/10784/14441
Palabra clave:
Distribution Systems
Phase Balance
Reduction Of Energy Losses
Sistemas De Distribución
Balance De Fases
Reducción De Pérdidas De Energía
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Acceso abierto
Description
Summary:The unbalanced operation of distribution systems impairs the quality of power and increases investment and operation costs. Feeder reconfiguration and phase exchange are the two main approaches to phase balancing, the first being the most difficult to carry out due to the small number of sectionalizers available in most distribution systems. On the other hand, the exchange of phases constitutes a direct, effective and low-cost alternative for the phase balance. The main contribution of this article is the proposal of an optimization model and a solution technique for phase balance planning in distribution systems. As for the optimization model, a mixed integer nonlinear formulation is proposed. On the other hand, the proposed solution technique consists of a specialized genetic algorithm. To show the effectiveness of the proposed methodology, several tests are carried out with two distribution systems of 37 and 19 bars, the latter with different load models. The results show that in addition to achieving the main objective of reducing losses, the phase balance allows obtaining other technical benefits such as the improvement of the stress profile and reduction of congestion in the system lines.