Stability Assessment of A Radial Grid With Power Converters

The increase proportion of power converters causes stability problems in the radial grid. To address these issues, this paper firstly proposes a unified modeling procedure and applies it to two types of converters. Secondly, the impedance models are used to analyze the stability of a radial grid wit...

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Main Authors: Xingqi Liu, Zhixiang Zou, Jiajun Yang, Jian Tang, Zhiren Liu, Giampaolo Buticchi, Zheng Wang, Ming Cheng
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Open Journal of Power Electronics
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9664237/
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author Xingqi Liu
Zhixiang Zou
Jiajun Yang
Jian Tang
Zhiren Liu
Giampaolo Buticchi
Zheng Wang
Ming Cheng
author_facet Xingqi Liu
Zhixiang Zou
Jiajun Yang
Jian Tang
Zhiren Liu
Giampaolo Buticchi
Zheng Wang
Ming Cheng
author_sort Xingqi Liu
collection DOAJ
description The increase proportion of power converters causes stability problems in the radial grid. To address these issues, this paper firstly proposes a unified modeling procedure and applies it to two types of converters. Secondly, the impedance models are used to analyze the stability of a radial grid with converters under four cases. The influence of the short circuit ratio (SCR) and line impedance on system stability are investigated. Then, a comprehensive sensitivity analysis is performed in order to investigate the effects of parameters variations on the closed-loop poles of the system under different conditions. Finally, the accuracy of the model and theoretical analysis are verified by simulations and Hardware-in-the-Loop (HiL) tests.
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spelling doaj.art-7d66e3ac11b84fad9a806fa96dcc7ea92022-12-21T19:38:09ZengIEEEIEEE Open Journal of Power Electronics2644-13142022-01-013617410.1109/OJPEL.2021.31385099664237Stability Assessment of A Radial Grid With Power ConvertersXingqi Liu0https://orcid.org/0000-0001-7228-2295Zhixiang Zou1https://orcid.org/0000-0002-3837-3334Jiajun Yang2https://orcid.org/0000-0002-4186-6615Jian Tang3Zhiren Liu4Giampaolo Buticchi5https://orcid.org/0000-0003-0470-3259Zheng Wang6Ming Cheng7https://orcid.org/0000-0002-3466-234XSoutheast University, Nanjing, ChinaSoutheast University, Nanjing, ChinaUniversity of Nottingham Ningbo China, Ningbo, ChinaSoutheast University, Nanjing, ChinaState Grid Wuxi Power Supply Company, Wuxi, ChinaUniversity of Nottingham Ningbo China, Ningbo, ChinaSoutheast University, Nanjing, ChinaSoutheast University, Nanjing, ChinaThe increase proportion of power converters causes stability problems in the radial grid. To address these issues, this paper firstly proposes a unified modeling procedure and applies it to two types of converters. Secondly, the impedance models are used to analyze the stability of a radial grid with converters under four cases. The influence of the short circuit ratio (SCR) and line impedance on system stability are investigated. Then, a comprehensive sensitivity analysis is performed in order to investigate the effects of parameters variations on the closed-loop poles of the system under different conditions. Finally, the accuracy of the model and theoretical analysis are verified by simulations and Hardware-in-the-Loop (HiL) tests.https://ieeexplore.ieee.org/document/9664237/Radial gridgrid-following convertergrid-forming converterimpedance modelcomplex frequency domainstability
spellingShingle Xingqi Liu
Zhixiang Zou
Jiajun Yang
Jian Tang
Zhiren Liu
Giampaolo Buticchi
Zheng Wang
Ming Cheng
Stability Assessment of A Radial Grid With Power Converters
IEEE Open Journal of Power Electronics
Radial grid
grid-following converter
grid-forming converter
impedance model
complex frequency domain
stability
title Stability Assessment of A Radial Grid With Power Converters
title_full Stability Assessment of A Radial Grid With Power Converters
title_fullStr Stability Assessment of A Radial Grid With Power Converters
title_full_unstemmed Stability Assessment of A Radial Grid With Power Converters
title_short Stability Assessment of A Radial Grid With Power Converters
title_sort stability assessment of a radial grid with power converters
topic Radial grid
grid-following converter
grid-forming converter
impedance model
complex frequency domain
stability
url https://ieeexplore.ieee.org/document/9664237/
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AT zhixiangzou stabilityassessmentofaradialgridwithpowerconverters
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AT zhirenliu stabilityassessmentofaradialgridwithpowerconverters
AT giampaolobuticchi stabilityassessmentofaradialgridwithpowerconverters
AT zhengwang stabilityassessmentofaradialgridwithpowerconverters
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