Dynamic Consensus Algorithm based Distributed Unbalance Compensation in Islanded Microgrids

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

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Abstract

In islanded microgrids (MG), distributed generators (DG) can be employed as distributed compensators for improving the power quality (voltage unbalance and harmonics) in consumer side. Hierarchical control is usually applied with different control levels differentiated. In case of voltage unbalance compensation, droop control and virtual impedance can be applied in primary control to help the positive sequence active and reactive power sharing. Secondary control is used to assist voltage unbalance compensation. However, if transmission line differences are considered, the negative sequence current cannot be well shared among DGs. Accordingly, this paper analyzes the power flow in unbalanced islanded MG, proposes a dynamic consensus algorithm based distributed negative sequence current sharing method. Experimental results are shown to demonstrate the effectiveness of the method.
Original languageEnglish
Title of host publicationProceedings of the IEEE Power & Energy Society General Meeting, PES 2015
Number of pages5
PublisherIEEE Press
Publication date2015
Pages1-5
DOIs
Publication statusPublished - 2015
EventIEEE Power & Energy Society General Meeting, PES 2015 - Sheraton Denver Downtown Hotel 1550 Court Place, Denver, Colorado, United States
Duration: 26 Jul 201530 Jul 2015

Conference

ConferenceIEEE Power & Energy Society General Meeting, PES 2015
LocationSheraton Denver Downtown Hotel 1550 Court Place
CountryUnited States
CityDenver, Colorado
Period26/07/201530/07/2015

Keywords

  • Islanded microgrid
  • Hierarchical control
  • Voltage unbalance compensation

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    Meng, L., Zhao, X., Firoozabadi, M. S., Dragicevic, T., Quintero, J. C. V., Guerrero, J. M., & Tang, F. (2015). Dynamic Consensus Algorithm based Distributed Unbalance Compensation in Islanded Microgrids. In Proceedings of the IEEE Power & Energy Society General Meeting, PES 2015 (pp. 1-5). IEEE Press. https://doi.org/10.1109/PESGM.2015.7285824