Summary
Driven by large-scale offshore wind integration targets, HVDC technology is evolving from traditional point-to-point links toward meshed, multiterminal (MT), multivendor (MV) HVDC grids, for which interoperability must be de-risked; the core objective of the InterOPERA project. To support the definition of functional specification, a study process for early-stage
Read more Read lessHVDC grid design based on generic models and EMT simulations has been proposed and applied to the three-terminal demonstrator base case. This paper presents both the general methodology for conducting preliminary insulation coordination studies and the transient analysis of DC faults in the ±525 kV (highest voltage), 2 GW bipolar benchmark. Key outcomes include the validation of DC-side equipment withstand voltage requirements and the definition of suitable neutral system parameters. Numerical results illustrate the need for a coordinated assessment of the grounding configuration and the surge arrester design, providing guidance on the standardisation efforts required to support the development of future MT MV HVDC grid.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B4_10790_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | France |
| Study committees | |
| File size | 2 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
DE FOUCAUD Benoît - RTE France; POUGET Julien - RTE France; PETIT Ambroise - RTE France; RAULT Pierre - RTE France; CARDOZO Carmen - RTE France; DENNETIERE Sébastien - RTE France
Keywords
Multi-terminal HVDC grids, Bipolar HVDC, Insulation coordination, DC circuit breakers.
