Agent-based Distributed Unbalance Compensation for Optimal Power Quality in Islanded Microgrids

Lexuan Meng, Tomislav Dragicevic, Josep M. Guerrero, Juan Carlos Vasquez, Mehdi Savaghebi, Fen Tang

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

9 Citations (Scopus)
455 Downloads (Pure)

Abstract

In microgrids, the distributed generators (DG) can be used as distributed compensators so as to compensate the voltage unbalances in the critical bus. However, the power quality disturbance in generator sides and local buses may be affected and exceeds the limit. It can be more convenient to implement tertiary control so as to adjust the compensation efforts among DGs and ensure the acceptable power quality in local buses. Moreover, as centralized control methods have certain disadvantages, such as low flexibility, expandability and heavy computation burden, this paper proposes an agent-based distributed hierarchical control method. Communication links are required between neighboring units. Consensus algorithm and optimization algorithm are implemented in tertiary control for global information discovery and local optimal decision-making respectively. The tertiary control gives lower level controller a tertiary compensation gain to adjust the local DG compensation effort so as to ensure the acceptable power quality in the local bus while keeping the best power quality in critical bus. Simulation results are shown to demonstrate the effectiveness of the method.
Original languageEnglish
Title of host publicationProceedings of the IEEE 23rd International Symposium on Industrial Electronics, ISIE 2014
Number of pages6
PublisherIEEE Press
Publication dateJun 2014
Pages2535-2540
DOIs
Publication statusPublished - Jun 2014
EventIEEE International Symposium on Industrial Electronics, ISIE 2014 - Istanbul, Turkey
Duration: 1 Jun 20144 Jun 2014

Conference

ConferenceIEEE International Symposium on Industrial Electronics, ISIE 2014
CountryTurkey
CityIstanbul
Period01/06/201404/06/2014

Keywords

  • Microgrids
  • Optimization
  • Voltage unbalance compensation
  • Consensus algorithm
  • Distirbuted hierarchical control

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