Study and development of a modified droop control strategy for autonomous microgrids

Lucas S. Araujo, Dante I. Narvaez, Thais G. Siqueira, Marcelo G. Villalva

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

1 Scopus citations

Abstract

This paper develops a control strategy for converters in low voltage single phase isolated microgrids. Droop control technique for low voltage is used to control the active power as function of the voltage amplitude, and reactive power as function of frequency deviation. This control suppresses the use of physical communication between the power converters by simply local measurements, allowing its connection to the system without adjustment needs. Some concepts as microgrids and types of inverters connected as grid forming, providing and supporting inverters are introduced. It is demonstrated the droop control, and it is individualized for low-voltage systems, where it is more convenient to use active power as function of the magnitude of the voltage. A novel modified droop control equation is proposed to compensate the voltage drop at line resistance. The validity of this new approach is proven by simulations that compare both droop types and presents the effective improvement in active power-sharing and voltage regulation at common bus.

Original languageEnglish
Title of host publicationWCECS 2016 - World Congress on Engineering and Computer Science 2016
EditorsS. I. Ao, Warren S. Grundfest, Craig Douglas
PublisherNewswood Limited
Pages292-297
Number of pages6
ISBN (Electronic)9789881404718
StatePublished - 2016
Event2016 World Congress on Engineering and Computer Science, WCECS 2016 - San Francisco, United States
Duration: 19 Oct 201621 Oct 2016

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2225
ISSN (Print)2078-0958

Conference

Conference2016 World Congress on Engineering and Computer Science, WCECS 2016
Country/TerritoryUnited States
CitySan Francisco
Period19/10/1621/10/16

Keywords

  • Distributed generation
  • Droop control
  • Microgrids
  • Power electronics
  • Voltage regulation

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