Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids

Fisnik Loku, Patrick Düllmann, Christina Brantl and Antonello Monti
Additional contact information
Fisnik Loku: Institute of High Voltage Equipment and Grids, Digitalization and Energy Economics, RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany
Patrick Düllmann: Institute of High Voltage Equipment and Grids, Digitalization and Energy Economics, RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany
Christina Brantl: Institute of High Voltage Equipment and Grids, Digitalization and Energy Economics, RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany
Antonello Monti: E.ON Energy Research Center, Institute for Automation of Complex Power Systems, RWTH Aachen University, Mathieustraße 10, 52074 Aachen, Germany

Energies, 2021, vol. 14, issue 21, 1-17

Abstract: 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.

Keywords: converter-driven stability; MTDC Interoperability; multi-vendor MTDC networks; impedance calculation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/21/6899/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/21/6899/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:21:p:6899-:d:661296

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().