Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems: Preprint

Shahil Shah; Przemyslaw Koralewicz; Robert Wallen; Vahan Gevorgian

Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems: Preprint

Shahil Shah, Przemyslaw Koralewicz, Robert Wallen, Vahan Gevorgian

Research output: Contribution to conference › Paper

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 testbed components including a 7 MVA grid simulator, 5 MW dynamometer, medium-voltage measurement system, and 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 and characterization of grid-forming inverters using impedance measurements.

Original language	American English
Number of pages	11
State	Published - 2019
Event	2019 Energy Conversion Congress and Exposition (IEEE ECCE) - Baltimore, Maryland Duration: 29 Sep 2019 → 3 Oct 2019

Conference

Conference	2019 Energy Conversion Congress and Exposition (IEEE ECCE)
City	Baltimore, Maryland
Period	29/09/19 → 3/10/19

Bibliographical note

See NREL/CP-5D00-75853 for paper as published in IEEE proceedings

NREL Publication Number

NREL/CP-5D00-73173

Keywords

control interactions
impedance measurement
impedance measurements
renewable generation
resonance
stability
storage

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

https://www.nrel.gov/docs/fy19osti/73173.pdf

Cite this

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title = "Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems: Preprint",

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 testbed components including a 7 MVA grid simulator, 5 MW dynamometer, medium-voltage measurement system, and 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 and characterization of grid-forming inverters using impedance measurements.",

keywords = "control interactions, impedance measurement, impedance measurements, renewable generation, resonance, stability, storage",

author = "Shahil Shah and Przemyslaw Koralewicz and Robert Wallen and Vahan Gevorgian",

note = "See NREL/CP-5D00-75853 for paper as published in IEEE proceedings; 2019 Energy Conversion Congress and Exposition (IEEE ECCE) ; Conference date: 29-09-2019 Through 03-10-2019",

year = "2019",

language = "American English",

}

TY - CONF

T1 - Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems: Preprint

AU - Shah, Shahil

AU - Koralewicz, Przemyslaw

AU - Wallen, Robert

AU - Gevorgian, Vahan

N1 - See NREL/CP-5D00-75853 for paper as published in IEEE proceedings

PY - 2019

Y1 - 2019

N2 - 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 testbed components including a 7 MVA grid simulator, 5 MW dynamometer, medium-voltage measurement system, and 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 and characterization of grid-forming inverters using impedance measurements.

AB - 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 testbed components including a 7 MVA grid simulator, 5 MW dynamometer, medium-voltage measurement system, and 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 and characterization of grid-forming inverters using impedance measurements.

KW - control interactions

KW - impedance measurement

KW - impedance measurements

KW - renewable generation

KW - resonance

KW - stability

KW - storage

M3 - Paper

T2 - 2019 Energy Conversion Congress and Exposition (IEEE ECCE)

Y2 - 29 September 2019 through 3 October 2019

ER -

Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems: Preprint

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

Access to Document

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Cite this