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Reconfiguração Ótima De Sistemas De Distribuição De Energia Elétrica Baseado No Comportamento De Colônias De Formigas
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pereira, Fernando Da Silva |
| Copyright Year | 2010 |
| Abstract | PEREIRA, F. S. Optimal reconfiguration of the electric power distribution systems using a modified ant colony system algorithm. 2009. 105 f. Tese (Doutorado) Escola de Engenharia de São Carlos, Universidade de São Paulo , São Carlos, 2009. The objective of this work is to present a novel me thodology for obtaining new configurations of the distribution system in order to minimize the active power losses without violating operational constraints. For this, it is considered that any distribution system is operating in a steady state and that it is balanced, therefore it can be represented by a one-line diagram. The reconfiguration is done in order to redistribute de current flows on the distribution power lines, transferring loads among the feeders and imp roving the voltage profile along the system. Such problem can be formulated as a mixed i nt ger nonlinear programming problem. Due to its inherent combinatorial characteristic an d since its solution by classic optimization techniques is not appealing, heuristic and metaheur istic techniques are thus better suited for its solution. Although these latter do not guarante e a global optimum, they are able to find good solutions in a relatively short time. The solu ti n of the reconfiguration problem in this approach makes use of a novel methodology based on ant colony behavior, when these search for victuals in nature. In this technique, the arti ficial ants (agents) explore the environment (distribution system) and exchange information amon g them in order to find the topology that provides the smallest active losses. For the active losses calculation, this work also presents a novel approach for the solution of the power flow p roblem for radial distribution systems. The solution of the power flow problem is used by syste m operators in order to determine the state and operational conditions of power systems. Basica lly, the most common techniques used in the power flow solution are based on either Newton’ s or Gauss’ approaches. However, due to particular characteristics of distribution systems such as the high ratio of r/x and the radial topology, these methods present convergence problem s and are not efficient in most of the cases. Thus, this novel technique consists in assoc iating Newton’s and the penalty function approaches. The matter of the ill-conditioned Jacob ian matrix in Newton’s method is overcome with the penalty function method. Some te sts performed in different systems are then presented in order to assess the effectiveness of both proposed techniques. |
| File Format | PDF HTM / HTML |
| DOI | 10.11606/T.18.2010.tde-28042010-151514 |
| Alternate Webpage(s) | https://teses.usp.br/teses/disponiveis/18/18154/tde-28042010-151514/publico/Fernando.pdf |
| Alternate Webpage(s) | https://doi.org/10.11606/T.18.2010.tde-28042010-151514 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
