Generation cost minimization based distributed coordination control in DC microgrids

Mohamed Zaery, Emad M. Ahmed, Mohamed Orabi

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

5 Scopus citations

Abstract

This paper develops a new fully distributed coordination control scheme for optimally reducing the total generation cost (TGC) in DC microgrids that includes different types of dispatchable distributed generations (DGs). It presents the normalized running cost as a comprehensive economical dispatching problem (EDP) solving method to overcome the drawbacks of the conventional EDP solving techniques. The proposed controller optimizes load sharing between DGs and regulates microgrid's average voltage using tertiary and secondary control levels. Through local voting protocol, the tertiary controller equalizes DGs normalized costs to schedule the output power of each DG at the optimum point while satisfying inequality constraint. Furthermore, generation-demand equality constraint could be realized by secondary control level through regulating the average voltage across the microgrid. Feasibility of the proposed controller in case of load variations, plug and play capability, and communication failures are verified by the experimental studies in a lab-scale DC microgrid.

Original languageEnglish
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2816-2821
Number of pages6
ISBN (Electronic)9781509053667
DOIs
StatePublished - 17 May 2017
Externally publishedYes
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: 26 Mar 201730 Mar 2017

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Country/TerritoryUnited States
CityTampa
Period26/03/1730/03/17

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

Keywords

  • DC microgrids
  • Distributed control
  • Economical dispatch problem

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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