Modeling and experimental validation of power electronic loads and DERs for microgrid islanding simulations

Research output: Contribution to journalArticleAcademicpeer-review

31 Downloads (Pure)

Abstract

Microgrid islanding can improve the reliability of distribution networks by enabling load to be supplied even after a fault has occured nearby. The generation and load devices in microgrids are commonly interfaced by power electronics, causing a lack of inertia in the network. When microgrids transition from grid-connected to islanded operation after a fault, fast dynamics occur which have to be evaluated to assess stability during and after the transition. Their stability can be evaluated by time-domain simulations, however detailed and validated models of power electronic loads and distributed energy resources are required. This paper proposes component-based models of different types of power electronic loads, and single and three phase distributed energy resources. The models are validated with a variety of voltage and frequency transient experiments. A case study is performed where a modified version of the Cigre European LV residential network is islanded after a fault occurs. The results of the proposed, constant impedance and exponential load models are compared. The results indicate that the proposed models should be used for accurate analysis of the voltage and frequency stability during microgrid islanding simulations.
Original languageEnglish
Article number8902151
Pages (from-to)2279-2288
Number of pages10
JournalIEEE Transactions on Power Systems
Volume35
Issue number3
DOIs
Publication statusPublished - May 2020

Keywords

  • Microgrids
  • distributed generaton
  • dynamic models
  • islanding
  • load modeling

Fingerprint Dive into the research topics of 'Modeling and experimental validation of power electronic loads and DERs for microgrid islanding simulations'. Together they form a unique fingerprint.

Cite this