Reliability enhancement using optimal distribution feeder reconfiguration

Authors:
Abdollah Kavousi-Fard;Mohammad-Reza Akbari-Zadeh
Affiliations:
Young Researchers Club, Sarvestan Branch, Islamic Azad University, Sarvestan, Iran;Department of Electrical Engineering, Technical College, ShahidBahonar University of Shiraz, Shiraz, Iran
Venue:
Neurocomputing
Year:
2013

Citing 4
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Abstract

Failure statistics show that distribution networks engage the most contribution to the customer unavailability services. Optimal reconfiguration of distribution systems has many advantages like total power losses reduction, voltage profile enhancement, reliability improvement and so on. Therefore, in this paper a new multiobjective improved shuffled frog leaping algorithm (ISFLA) is proposed to investigate the distribution feeder reconfiguration (DFR) problem from the reliability enhancement point of view. Nevertheless, since the total cost of MW loss is an important and attractive subject to the electric power utilities, the total active power losses is also considered as an objective function in the investigations. Therefore, the objective functions of the problem to be optimized are system average interruption frequency index (SAIFI), system average interruption duration index (SAIDI), average energy not supplied (AENS) and the total active power losses. During the optimization process, the proposed ISFLA finds a set of non-dominated optimal solutions referred to Pareto optimal solutions that are kept in an external memory called repository. As the result of the conflicting behavior of the objective functions investigated, a fuzzy clustering technique is employed to control the size of the repository in the predetermined limits. The feasibility and the efficiency of the proposed method are examined by a standard distribution test system.