Efficient modeling of DFIG- and FSC-based wind turbines for frequency stability analysis

Research output: Contribution to journalArticleResearchpeer review

Authors

Research Organisations

View graph of relations

Details

Original languageEnglish
Pages (from-to)338–351
Number of pages14
JournalElektrotechnik und Informationstechnik
Volume140
Issue number2
Early online date13 Mar 2023
Publication statusPublished - Apr 2023

Abstract

The contribution of wind turbines (WTs) to enhance the frequency stability of power systems is traditionally analyzed using commonly applied root mean square (RMS) models. RMS WT models require smaller simulation time steps compared to conventional active devices (i.e., synchronous generators and dynamic loads) due to the comparatively smaller time constants of the converter controllers. Such small time steps become relevant in simulations of large-scale power systems with a high level of WT penetration and lead to high computational time and effort. This paper presents simplified simulation models of a doubly-fed induction generator-based WT and a full-scale converter-based WT, which enable higher simulation time steps due to the negligence of very small time constants with no relevant effects in the time frame of interest of frequency stability analysis. The models are derived from detailed RMS WT models based on fundamental machine and converter equations. In order to verify the validity of the underlying simplifications, the simplified models are compared to the detailed RMS models with a focus on their general behavior in case of step responses and their frequency responses in the event of a frequency drop in a 220 kV test system. For this purpose, both the detailed RMS WT models as well as the simplified WT models are extended with a droop-based fast frequency response controller and implemented in a MATLAB-based RMS simulation tool. The results of the case studies show feasible and comparable general behavior of the WT models as well as plausible frequency responses.

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Efficient modeling of DFIG- and FSC-based wind turbines for frequency stability analysis. / Goudarzi, Farshid; Reus, Lucas; Hofmann, Lutz.
In: Elektrotechnik und Informationstechnik, Vol. 140, No. 2, 04.2023, p. 338–351.

Research output: Contribution to journalArticleResearchpeer review

Download
@article{fd1dd6fb241b4ba19bfaae766e433e9a,
title = "Efficient modeling of DFIG- and FSC-based wind turbines for frequency stability analysis",
abstract = "The contribution of wind turbines (WTs) to enhance the frequency stability of power systems is traditionally analyzed using commonly applied root mean square (RMS) models. RMS WT models require smaller simulation time steps compared to conventional active devices (i.e., synchronous generators and dynamic loads) due to the comparatively smaller time constants of the converter controllers. Such small time steps become relevant in simulations of large-scale power systems with a high level of WT penetration and lead to high computational time and effort. This paper presents simplified simulation models of a doubly-fed induction generator-based WT and a full-scale converter-based WT, which enable higher simulation time steps due to the negligence of very small time constants with no relevant effects in the time frame of interest of frequency stability analysis. The models are derived from detailed RMS WT models based on fundamental machine and converter equations. In order to verify the validity of the underlying simplifications, the simplified models are compared to the detailed RMS models with a focus on their general behavior in case of step responses and their frequency responses in the event of a frequency drop in a 220 kV test system. For this purpose, both the detailed RMS WT models as well as the simplified WT models are extended with a droop-based fast frequency response controller and implemented in a MATLAB-based RMS simulation tool. The results of the case studies show feasible and comparable general behavior of the WT models as well as plausible frequency responses.",
keywords = "Doubly-fed induction generator, Efficient modeling, Frequency stability analysis, Full-scale converter, Model reduction, Wind turbine modeling",
author = "Farshid Goudarzi and Lucas Reus and Lutz Hofmann",
note = "Open Access funding enabled and organized by Projekt DEAL.",
year = "2023",
month = apr,
doi = "10.1007/s00502-023-01128-2",
language = "English",
volume = "140",
pages = "338–351",
journal = "Elektrotechnik und Informationstechnik",
issn = "0932-383X",
number = "2",

}

Download

TY - JOUR

T1 - Efficient modeling of DFIG- and FSC-based wind turbines for frequency stability analysis

AU - Goudarzi, Farshid

AU - Reus, Lucas

AU - Hofmann, Lutz

N1 - Open Access funding enabled and organized by Projekt DEAL.

PY - 2023/4

Y1 - 2023/4

N2 - The contribution of wind turbines (WTs) to enhance the frequency stability of power systems is traditionally analyzed using commonly applied root mean square (RMS) models. RMS WT models require smaller simulation time steps compared to conventional active devices (i.e., synchronous generators and dynamic loads) due to the comparatively smaller time constants of the converter controllers. Such small time steps become relevant in simulations of large-scale power systems with a high level of WT penetration and lead to high computational time and effort. This paper presents simplified simulation models of a doubly-fed induction generator-based WT and a full-scale converter-based WT, which enable higher simulation time steps due to the negligence of very small time constants with no relevant effects in the time frame of interest of frequency stability analysis. The models are derived from detailed RMS WT models based on fundamental machine and converter equations. In order to verify the validity of the underlying simplifications, the simplified models are compared to the detailed RMS models with a focus on their general behavior in case of step responses and their frequency responses in the event of a frequency drop in a 220 kV test system. For this purpose, both the detailed RMS WT models as well as the simplified WT models are extended with a droop-based fast frequency response controller and implemented in a MATLAB-based RMS simulation tool. The results of the case studies show feasible and comparable general behavior of the WT models as well as plausible frequency responses.

AB - The contribution of wind turbines (WTs) to enhance the frequency stability of power systems is traditionally analyzed using commonly applied root mean square (RMS) models. RMS WT models require smaller simulation time steps compared to conventional active devices (i.e., synchronous generators and dynamic loads) due to the comparatively smaller time constants of the converter controllers. Such small time steps become relevant in simulations of large-scale power systems with a high level of WT penetration and lead to high computational time and effort. This paper presents simplified simulation models of a doubly-fed induction generator-based WT and a full-scale converter-based WT, which enable higher simulation time steps due to the negligence of very small time constants with no relevant effects in the time frame of interest of frequency stability analysis. The models are derived from detailed RMS WT models based on fundamental machine and converter equations. In order to verify the validity of the underlying simplifications, the simplified models are compared to the detailed RMS models with a focus on their general behavior in case of step responses and their frequency responses in the event of a frequency drop in a 220 kV test system. For this purpose, both the detailed RMS WT models as well as the simplified WT models are extended with a droop-based fast frequency response controller and implemented in a MATLAB-based RMS simulation tool. The results of the case studies show feasible and comparable general behavior of the WT models as well as plausible frequency responses.

KW - Doubly-fed induction generator

KW - Efficient modeling

KW - Frequency stability analysis

KW - Full-scale converter

KW - Model reduction

KW - Wind turbine modeling

UR - http://www.scopus.com/inward/record.url?scp=85149881244&partnerID=8YFLogxK

U2 - 10.1007/s00502-023-01128-2

DO - 10.1007/s00502-023-01128-2

M3 - Article

VL - 140

SP - 338

EP - 351

JO - Elektrotechnik und Informationstechnik

JF - Elektrotechnik und Informationstechnik

SN - 0932-383X

IS - 2

ER -

By the same author(s)