Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems

Research output: Contribution to conferencePaperpeer-review

7 Scopus Citations

Abstract

This paper presents the impedance characterization of utility-scale wind turbines and PV/storage inverters using a multimegawatt grid simulator-based grid integration testbed. The paper describes the testbed components including a 7 MVA grid simulator, 5 MW dynamometer, medium-voltage measurement system, and a real-time control system used for automated impedance characterization of wind turbines and inverters. Different aspects of impedance measurement are discussed, including the selection of the magnitude and type of perturbation, measurement of frequency cross-coupling between sequence impedance responses, and the alignment of the reference frame for sequence impedance measurement. The paper also demonstrates high-fidelity validation of EMT simulation models from turbine manufacturers and characterization of grid-forming inverters using impedance measurements.

Original languageAmerican English
Pages2609-2616
Number of pages8
DOIs
StatePublished - Sep 2019
Event11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
Duration: 29 Sep 20193 Oct 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Country/TerritoryUnited States
CityBaltimore
Period29/09/193/10/19

Bibliographical note

See NREL/CP-5D00-73173 for preprint

NREL Publication Number

  • NREL/CP-5D00-75853

Keywords

  • control interactions
  • impedance measurement
  • impedance measurements
  • renewable generation
  • resonance
  • stability
  • storage

Fingerprint

Dive into the research topics of 'Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems'. Together they form a unique fingerprint.

Cite this