Distribution Network Reconfiguration Considering Voltage and Current Unbalance Indexes and Variable Demand Solved through a Selective Bio-Inspired Metaheuristic

Cassio Gerez, Eduardo Coelho Marques Costa and Alfeu J. Sguarezi Filho
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Cassio Gerez: Polytechnic School, University of São Paulo—EPUSP, São Paulo 05508-010, SP, Brazil
Eduardo Coelho Marques Costa: Polytechnic School, University of São Paulo—EPUSP, São Paulo 05508-010, SP, Brazil
Alfeu J. Sguarezi Filho: Center for Engineering, Modeling and Applied Social Sciences (CECS), Federal University of ABC—UFABC, Santo Andre 09210-580, SP, Brazil

Energies, 2022, vol. 15, issue 5, 1-27

Abstract: Operation of distribution networks involves a series of criteria that should be met, aiming for the correct and optimal behavior of such systems. Some of the major drawbacks found when studying these networks is the real losses related to them. To overcome this problem, distribution network reconfiguration (DNR) is an efficient tool due to the low costs involved in its implementation. The majority of studies regarding this subject treat the problem by considering networks only as three-phase balanced, modeled as single-phase grids with fixed power demand, which is far from representing the characteristics of real networks (e.g., unbalanced loads, variable power and unbalance indexes). Due to the combinatorial nature of the problem, metaheuristic techniques are powerful tools for the inclusion of such characteristics. In this sense, this paper proposes a study of DNR considering balanced and unbalanced systems with variable power demand. An analysis of the direct influence of voltage unbalance index (VUI) and current unbalance index (CUI) is carried out for unbalanced cases. To solve the DNR problem, a selective bio-inspired metaheuristic based on micro bats’ behavior named the selective bat algorithm (SBAT) is used together with the EPRI-OpenDSS software (California, US, EPRI). Tests are initially conducted on balanced systems, aiming to validate the technique proposed for both demands and state their differences, and then they are conducted on unbalanced systems to study the influence of VUI and CUI in the DNR solution.

Keywords: unbalanced distribution systems; distribution network reconfiguration; current unbalance index; voltage unbalance index; variable demand (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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