Performance Validation of Cooperative Secondary Controllers in Autonomous AC Microgrids Under Communication Delays

Rubi Rana, Subham Sahoo, Sukumar Mishra, Jimmy Chih-Hsien Peng

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Abstract

To enhance the stability and resiliency in autonomous microgrids, distributed frequency and voltage restoration controllers are prominently used. These controllers are executed using consensus algorithm which allows them to work
in a cooperative manner by exchanging information among their neighbors. This information exchange is achieved through a cyber network which inherently exhibits time delays, packet loss, etc. However, traditional approaches in simulation do not translate an accurate model to incorporate the abovementioned variables in a cyber channel. Thus, a SimEvents based communication model is designed to simulate all the intermittent communication parameters. Along with this, a small-signal analysis of an autonomous inverter based microgrid considering the maximum time delay as the stability margin is investigated. Upon determining the time delay margin, the value of the delay is tested in MATLAB/SIMULINK environment to validate the stability margin from theoretical studies.
Original languageEnglish
Title of host publication2019 IEEE Power & Energy Society General Meeting (PESGM)
Number of pages5
Place of PublicationAtlanta, GA
PublisherIEEE
Publication dateAug 2019
ISBN (Print)978-1-7281-1982-3
ISBN (Electronic)978-1-7281-1981-6
DOIs
Publication statusPublished - Aug 2019
Externally publishedYes
Event2019 IEEE PES General Meeting - Atlanta, United States
Duration: 4 Aug 20198 Aug 2019

Conference

Conference2019 IEEE PES General Meeting
Country/TerritoryUnited States
CityAtlanta
Period04/08/201908/08/2019
SeriesIEEE Power and Energy Society General Meeting
ISSN1944-9925

Keywords

  • AC Microgrid
  • Communication delay
  • Modeling and control
  • Consensus control
  • SimEvents
  • Robust control
  • Time-delay analysis

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