Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers

DC circuit breaker (DCCB) systems with a DC reactor in series are normally equipped in the voltage-sourced-converter-based multi-terminal DC (VSC–MTDC) systems for DC fault clearance. However, it is revealed that the use of DC reactors could undermine the system damping and deteriorate the system st...

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Autores principales:	Wenzhong Ma, Jianyi Gao, Guanyu Zhou, Yan Zhang, Kuitong Zhang, Jia Han, Lei Dong
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	HVDC stability analysis robust control power sharing Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/0c9a5cea649a4d27ae00e153d1d6dd42
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spelling	oai:doaj.org-article:0c9a5cea649a4d27ae00e153d1d6dd422021-11-25T19:06:13ZInvestigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers10.3390/sym131120372073-8994https://doaj.org/article/0c9a5cea649a4d27ae00e153d1d6dd422021-10-01T00:00:00Zhttps://www.mdpi.com/2073-8994/13/11/2037https://doaj.org/toc/2073-8994DC circuit breaker (DCCB) systems with a DC reactor in series are normally equipped in the voltage-sourced-converter-based multi-terminal DC (VSC–MTDC) systems for DC fault clearance. However, it is revealed that the use of DC reactors could undermine the system damping and deteriorate the system stability. In this paper, a controller based on hybrid sensitivity is proposed to improve the stability of power system and realize the power symmetry of multi-terminal systems. Firstly, based on a generalized MTDC small-signal model, an eigenvalue analysis is performed to provide deep insight into the stability issue imposed by DC reactors. Furthermore, a local controller based on hybrid sensitivity was proposed, and on this basis, a global controller was designed to solve asymmetrical power flow. Finally, a four-terminal VSC–MTDC model was built in Simulink to evaluate the performance of DC-PSS. Simulation results verify the effectiveness of the proposed controller in stabilizing MTDC systems and symmetrizing of power flow.Wenzhong MaJianyi GaoGuanyu ZhouYan ZhangKuitong ZhangJia HanLei DongMDPI AGarticleHVDCstability analysisrobust controlpower sharingMathematicsQA1-939ENSymmetry, Vol 13, Iss 2037, p 2037 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	HVDC stability analysis robust control power sharing Mathematics QA1-939
spellingShingle	HVDC stability analysis robust control power sharing Mathematics QA1-939 Wenzhong Ma Jianyi Gao Guanyu Zhou Yan Zhang Kuitong Zhang Jia Han Lei Dong Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers
description	DC circuit breaker (DCCB) systems with a DC reactor in series are normally equipped in the voltage-sourced-converter-based multi-terminal DC (VSC–MTDC) systems for DC fault clearance. However, it is revealed that the use of DC reactors could undermine the system damping and deteriorate the system stability. In this paper, a controller based on hybrid sensitivity is proposed to improve the stability of power system and realize the power symmetry of multi-terminal systems. Firstly, based on a generalized MTDC small-signal model, an eigenvalue analysis is performed to provide deep insight into the stability issue imposed by DC reactors. Furthermore, a local controller based on hybrid sensitivity was proposed, and on this basis, a global controller was designed to solve asymmetrical power flow. Finally, a four-terminal VSC–MTDC model was built in Simulink to evaluate the performance of DC-PSS. Simulation results verify the effectiveness of the proposed controller in stabilizing MTDC systems and symmetrizing of power flow.
format	article
author	Wenzhong Ma Jianyi Gao Guanyu Zhou Yan Zhang Kuitong Zhang Jia Han Lei Dong
author_facet	Wenzhong Ma Jianyi Gao Guanyu Zhou Yan Zhang Kuitong Zhang Jia Han Lei Dong
author_sort	Wenzhong Ma
title	Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers
title_short	Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers
title_full	Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers
title_fullStr	Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers
title_full_unstemmed	Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers
title_sort	investigation and control of damping in vsc–mtdc system with dc circuit breakers
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0c9a5cea649a4d27ae00e153d1d6dd42
work_keys_str_mv	AT wenzhongma investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers AT jianyigao investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers AT guanyuzhou investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers AT yanzhang investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers AT kuitongzhang investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers AT jiahan investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers AT leidong investigationandcontrolofdampinginvscmtdcsystemwithdccircuitbreakers
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Investigation and Control of Damping in VSC–MTDC System with DC Circuit Breakers

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