Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids

A major challenge in the development of multi-vendor HVDC networks are converter control interactions. While recent publications have reported interoperability issues such as persistent oscillations for first multi-vendor HVDC setups with AC-side coupling, multi-terminal HVDC networks are expected t...

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Autores principales:	Fisnik Loku, Patrick Düllmann, Christina Brantl, Antonello Monti
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	converter-driven stability MTDC Interoperability multi-vendor MTDC networks impedance calculation Technology T
Acceso en línea:	https://doaj.org/article/7a6a5822bb924b68bd2d8411e57bfe44
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spelling	oai:doaj.org-article:7a6a5822bb924b68bd2d8411e57bfe442021-11-11T15:44:29ZEquivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids10.3390/en142168991996-1073https://doaj.org/article/7a6a5822bb924b68bd2d8411e57bfe442021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6899https://doaj.org/toc/1996-1073A major challenge in the development of multi-vendor HVDC networks are converter control interactions. While recent publications have reported interoperability issues such as persistent oscillations for first multi-vendor HVDC setups with AC-side coupling, multi-terminal HVDC networks are expected to face similar challenges. To investigate DC-side control interactions and mitigate possible interoperability issues, several methods based on the converters’ and DC network’s impedances have been proposed in literature. For DC network’s impedance modelling, most methods require detailed knowledge of all converters’ design and controls. However, in multi-vendor HVDC networks, converter control parameters are not expected to be shared due to proprietary reasons. Therefore, to facilitate impedance-based stability analyses in multi-vendor MTDC networks, methods that do not require the disclosure of the existing converter controls are needed. Here, detailed impedance measurements can be applied; however, they are time-consuming and require new measurement for a single configuration change. This paper proposes an equivalent impedance calculation method suitable for multi-vendor DC networks, which for available black-box models or converter impedance characteristics can be modularly applied for various network configurations, including different control settings and operating points, while significantly reducing the required time for obtaining an equivalent DC network impedance.Fisnik LokuPatrick DüllmannChristina BrantlAntonello MontiMDPI AGarticleconverter-driven stabilityMTDC Interoperabilitymulti-vendor MTDC networksimpedance calculationTechnologyTENEnergies, Vol 14, Iss 6899, p 6899 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	converter-driven stability MTDC Interoperability multi-vendor MTDC networks impedance calculation Technology T
spellingShingle	converter-driven stability MTDC Interoperability multi-vendor MTDC networks impedance calculation Technology T Fisnik Loku Patrick Düllmann Christina Brantl Antonello Monti Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
description	A major challenge in the development of multi-vendor HVDC networks are converter control interactions. While recent publications have reported interoperability issues such as persistent oscillations for first multi-vendor HVDC setups with AC-side coupling, multi-terminal HVDC networks are expected to face similar challenges. To investigate DC-side control interactions and mitigate possible interoperability issues, several methods based on the converters’ and DC network’s impedances have been proposed in literature. For DC network’s impedance modelling, most methods require detailed knowledge of all converters’ design and controls. However, in multi-vendor HVDC networks, converter control parameters are not expected to be shared due to proprietary reasons. Therefore, to facilitate impedance-based stability analyses in multi-vendor MTDC networks, methods that do not require the disclosure of the existing converter controls are needed. Here, detailed impedance measurements can be applied; however, they are time-consuming and require new measurement for a single configuration change. This paper proposes an equivalent impedance calculation method suitable for multi-vendor DC networks, which for available black-box models or converter impedance characteristics can be modularly applied for various network configurations, including different control settings and operating points, while significantly reducing the required time for obtaining an equivalent DC network impedance.
format	article
author	Fisnik Loku Patrick Düllmann Christina Brantl Antonello Monti
author_facet	Fisnik Loku Patrick Düllmann Christina Brantl Antonello Monti
author_sort	Fisnik Loku
title	Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
title_short	Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
title_full	Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
title_fullStr	Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
title_full_unstemmed	Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
title_sort	equivalent impedance calculation method for control stability assessment in hvdc grids
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7a6a5822bb924b68bd2d8411e57bfe44
work_keys_str_mv	AT fisnikloku equivalentimpedancecalculationmethodforcontrolstabilityassessmentinhvdcgrids AT patrickdullmann equivalentimpedancecalculationmethodforcontrolstabilityassessmentinhvdcgrids AT christinabrantl equivalentimpedancecalculationmethodforcontrolstabilityassessmentinhvdcgrids AT antonellomonti equivalentimpedancecalculationmethodforcontrolstabilityassessmentinhvdcgrids
_version_	1718434093512785920

Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids

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