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DQ Admittance Extraction for Inverter-Based Resources

Conference ·
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The power grid industry is pushing for electromagnetic transient (EMT)-based studies for generation interconnection and planning process due to high penetrations of inverter-based resource (IBRs). Vendor-specific and site-specific black-box IBR models are preferred in those simulation studies. For small-signal analysis, measurement-based admittance models are necessary. In this paper, we demonstrate the extraction of frequency-domain dq frame IBR models. These linear models are specific to operating conditions. We demonstrate two extraction methods: frequency scan and a step response-based method. The latter relies on converting time-domain responses to Laplace-domain expressions via eigensystem realization analysis (ERA). Both can lead to dq admittance representation and the latter is time saving.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
DOE Contract Number:
AC36-08GO28308
OSTI ID:
2229357
Report Number(s):
NREL/CP-5D00-88245; MainId:89020; UUID:1ccffee3-db91-428d-acbf-6a44924d3090; MainAdminID:71247
Country of Publication:
United States
Language:
English

References (9)

Data-Driven Dynamic Modeling in Power Systems: A Fresh Look on Inverter-Based Resource Modeling journal May 2022
Use of Frequency Scanning Techniques for Subsynchronous Resonance Analysis journal March 1979
Analysis, Design, and Implementation of Impulse-Injection-Based Online Grid Impedance Identification With Grid-Tied Converters journal December 2020
Admittance-Based Stability Analysis: Bode Plots, Nyquist Diagrams or Eigenvalue Analysis? journal July 2020
Identifying DQ-Domain Admittance Models of a 2.3-MVA Commercial Grid-Following Inverter via Frequency-Domain and Time-Domain Data journal September 2021
Three-phase AC system impedance measurement unit (IMU) using chirp signal injection
  • Shen, Zhiyu; Jaksic, Marko; Mattavelli, Paolo
  • 2013 IEEE Applied Power Electronics Conference and Exposition - APEC 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2013.6520673
conference March 2013
General Methodology for Analysis of Sub-Synchronous Interaction in Wind Power Plants journal May 2013
Time-Domain Measurement-Based $DQ$-Frame Admittance Model Identification for Inverter-Based Resources journal May 2021
Generalized impedance model and interaction analysis for multiple grid-forming and grid-following converters journal January 2023

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Related Subjects

POWER TRANSMISSION AND DISTRIBUTION
admittance model
eigensystem realization analysis
frequency scan
system identification