Optimal energy management of unbalanced three-phase grid-connected microgrids

Juan S. Giraldo, Jhon A. Castrillon, Carlos A. Castro, Federico Milano

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

This paper presents a non-linear optimization problem based on nodal current injections to solve the optimal energy management of unbalanced, three-phase, grid-connected microgrids. The focus is on the modelling of small synchronous machines under unbalanced operation. Inverter-interfaced distributed energy resources, i.e., renewable sources and energy storage systems, are also considered and described. The proposed formulation minimizes the cost of the energy consumed by the microgrid while satisfying active and reactive power balances, the devices operational constraints, as well as current and voltage operational limits. The proposed model is tested using the IEEE 123 node test feeder and compared to commonly used formulations. Simulation results show the impact of unbalanced models on the energy management of three-phase microgrids.

Original languageEnglish
Title of host publication2019 IEEE Milan PowerTech, PowerTech 2019
PublisherIEEE
ISBN (Electronic)9781538647226
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes
Event13th IEEE Milan PowerTech 2019 - Milan, Italy
Duration: 23 Jun 201927 Jun 2019
Conference number: 13
https://attend.ieee.org/powertech-2019/

Conference

Conference13th IEEE Milan PowerTech 2019
CountryItaly
CityMilan
Period23/06/1927/06/19
Internet address

Keywords

  • Optimal energy management
  • Renewable energy sources
  • Unbalanced generator model
  • Unbalanced microgrid

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