A multiobjective placement of switching devices in distribution networks incorporating distributed energy resources

A. Vieira Pombo, Joao Murta-Pina, V. Fernão Pires

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

With the growth of Distributed Energy Resources (DER) in electrical systems, an increase in the benefits with the reconfiguration of radial networks related to the use of renewable energy is expected. However, in some countries the reconfiguration of radial networks has some limitations like the impossibility of island operation. Also, many of them have contracts with Distributed Generation (DG) operators that force them to buy all the available generation of electricity. After a fault these limitations increase DG unavailability resulting in a waste of resources in the form of payments of available electricity generation not used. In this paper we propose a multiobjective optimal placement of switching devices considering DG unavailability, network reliability and equipment cost, with no island network operation. Two approaches are proposed in this multiobjective problem. In the first approach, besides the minimization of the equipment cost and the reliability indices, it is proposed an extra objective function that considers the minimization of the Distributed Generation Unavailability Index (DGUI). In the second approach two new composite indices comprising DG, interruption duration and interruption frequency are presented. Results obtained from a case study using a real utility distribution network are presented and discussed. (C) 2015 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)34-45
Number of pages12
JournalElectric power systems research
Volume130
DOIs
Publication statusPublished - Jan 2016

Keywords

  • Multiobjective optimization
  • Switches and protective devices
  • NSGA-II
  • DGUI (Distributed Generation Unavailability Index)
  • Composite indices CISAIDI-DC and CISAIFI-DG
  • No-Island operation
  • DG ALLOCATION
  • RELIABILITY
  • GENERATION
  • RECONFIGURATION
  • OPTIMIZATION
  • IMPROVEMENT
  • ALGORITHM
  • SYSTEMS

Cite this