Requirements for interconnection of HVDC links with DC-DC converters

Daniel Gomez A. (1, 2) , Juan Paez (1, 3) , Marc Cheah-Mane (2) , Jose Maneiro (1) , Piotr Dworakowski (1) , Oriol Gomis-Bellmunt (2) , Florent Morel (1)

1 SuperGrid Institute SAS
2 Centre d'Innovació Tecnològica en Convertidors Estàtics i Accionaments (CITCEA-UPC), Universitat Politècnica de Catalunya, ETS d'Enginyeria Industrial de Barcelona
3 G2ELab - Laboratoire de Génie Electrique de Grenoble

The number of high voltage direct current (HVDC) links continue to increase over the years, most of them, for offshore applications or bulk power transmission over long distances. The present paper evaluates the possible development of a direct current (dc) grid in Europe given the present, and future, HVDC links. Eight potential cases for the interconnection between close links are suggested as starting scenario for a multiterminal network. The need of a dc-dc converter and its special requirements are evaluated in function of suggested interconnections. As an example, a case study is chosen to evaluate the behavior of an interconnection between line commutated converter (LCC) and voltage source converter (VSC) link using a front-to-front (F2F) isolated converter.

Mots clés: HVDC offshore grid; dc-dc converter; HVDC transmission; Modular Multilevel Converter (MMC); Line Commutated converter (LCC)

Domaines: Energie électrique; Electronique

Daniel Gomez A., Juan Paez, Marc Cheah-Mane, Jose Maneiro, Piotr Dworakowski, et al.. Requirements for interconnection of HVDC links with DC-DC converters. IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, Oct 2019, Lisbon, Portugal. pp.4854-4860, ⟨10.1109/IECON.2019.8927640⟩. ⟨hal-02432353⟩