A multi-objective optimization of the active and reactive resource scheduling at a distribution level in a smart grid context

Tiago Sousa, Hugo Morais, Zita Vale, Rui Castro

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In the traditional paradigm, the large power plants supply the reactive power required at a transmission level and the capacitors and transformer tap changer were also used at a distribution level. However, in a near future will be necessary to schedule both active and reactive power at a distribution level, due to the high number of resources connected in distribution levels. This paper proposes a new multi-objective methodology to deal with the optimal resource scheduling considering the distributed generation, electric vehicles and capacitor banks for the joint active and reactive power scheduling. The proposed methodology considers the minimization of the cost (economic perspective) of all distributed resources, and the minimization of the voltage magnitude difference (technical perspective) in all buses. The Pareto front is determined and a fuzzy-based mechanism is applied to present the best compromise solution. The proposed methodology has been tested in the 33-bus distribution network. The case study shows the results of three different scenarios for the economic, technical, and multi-objective perspectives, and the results demonstrated the importance of incorporating the reactive scheduling in the distribution network using the multi-objective perspective to obtain the best compromise solution for the economic and technical perspectives.
Original languageEnglish
JournalEnergy
Volume85
Pages (from-to)236-250
ISSN0360-5442
DOIs
Publication statusPublished - 2015

Keywords

  • Distributed energy resources
  • Energy resource management
  • Reactive power scheduling
  • Virtual power player
  • Voltage stability
  • Capacitors
  • Distributed power generation
  • Energy resources
  • Multiobjective optimization
  • Reactive power
  • Voltage control
  • Active and Reactive Power
  • Distributed Energy Resources
  • Distribution levels
  • Economic perspective
  • Energy resource managements
  • Power Scheduling
  • Transformer tap changers
  • Virtual power players
  • Scheduling

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