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A Parametric Reduced-Order Model for Inverter Short-Circuit Response in Protection Studies

  • R. Mahmud
  • , O. Cornmesser
  • , S. Chakraborty
  • , J. Wang
  • , A. Hoke
  • , J. Cale
  • , B. Johnson
  • , P. Pinheiro
  • , R. Bainy
  • Colorado State University
  • University of Idaho

Research output: NLR › Poster

Abstract

This paper presents a reduced-order model (ROM) for grid-following (GFL) inverters that reproduces inverter fault current trajectories, including sub transients, transient, and steady-state phases, across a range of fault types, locations, and pre-fault operating points. . The proposed model is developed by: Constructing the positive- and negative-sequence current with parameterization fitted by large data training and fitting Validating using EMT simulation against EMT full model and demonstrating the ROM's capability to capture fault current magnitude, phase angle, and oscillatory transients. Building a standard EMT simulation platform library component for easy configuration and application.
Original languageAmerican English
PublisherNational Laboratory of the Rockies (NLR)
Number of pages1
DOIs
StatePublished - 2026

Publication series

NamePresented at the IEEE PES T&D Conference & Exhibition, 4-7 May 2026, Chicago, Illinois

NLR Publication Number

  • NLR/PO-5D00-100377

Keywords

  • inverter based resource
  • reduced order model
  • short circuit current
  • transmission line protection

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