A Droop-Based Frequency Controller for Parallel Operation of VSCs and SG in Isolated Microgrids

Wessam Arafa Hafez, Karar Mahmoud, Abdelfatah Ali, Mostafa F. Shaaban, Poria Astero, Matti Lehtonen

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

1 Citation (Scopus)

Abstract

Microgrids are a novel concept for modern power distribution networks that integrate renewable power sources and increase power control capabilities. This system's essential problem is controlling the frequency in island mode. Using the synchronous generator (SG) control approach, the microgrid frequency is more stable due to the inertial features of the SG. In this regard, this paper presents a control algorithm for voltage source converters (VSC)-based distributed generators (DGs), which emulates the principal behavior of synchronous machines and can support inertia to the grid and reduce frequency gradients considering the parallel operation of the SG. The controller is designed based on droop control theory, and a supervisory center controller is implemented to maintain system frequency close to a nominal value of the whole microgrid. The simulation results demonstrate that the system frequency is stabilized even in different and sudden load changes in the island mode where the microgrid is fed by multiple VSC units and a SG. The Simulink model of the system is designed using MATLAB Simulink Software.

Original languageEnglish
Title of host publication2022 23rd International Middle East Power Systems Conference, MEPCON 2022
PublisherIEEE
Number of pages6
ISBN (Electronic)978-1-6654-6363-8
DOIs
Publication statusPublished - 26 Jan 2023
MoE publication typeA4 Conference publication
EventInternational Middle East Power Systems Conference - Cairo, Egypt
Duration: 13 Dec 202215 Dec 2022

Publication series

Name2022 23rd International Middle East Power Systems Conference, MEPCON 2022

Conference

ConferenceInternational Middle East Power Systems Conference
Abbreviated titleMEPCON
Country/TerritoryEgypt
CityCairo
Period13/12/202215/12/2022

Keywords

  • Isolated Microgrid
  • Synchronous generator and Voltage source converter
  • Virtual Inertia

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