RTE International has been contracted as a third-party consultant to perform gap analysis of Energinet’s existing project specifications and to adapt them accordingly for the Bornholm Island Energy project.
The work involves carrying out modelling and simulation requirements in relation to the high voltage direct current (HVDC) functionalities for the Bornholm Energy Island project.
It also includes producing specifications to de-risk the multi-vendor multi-terminal HVDC functionalities for the project.
Planned by the Danish TSO, Energinet, and the German TSO, 50Hertz, the energy island will be installed in the Baltic Sea by 2030.
As a first step, the offshore infrastructure will consist of offshore wind farms, with a total of 3GW of offshore wind capacity, located in Rønne Banke, connected to the AC substation at Bornholm Island.
Additionally, HVDC interconnectors running from Bornholm will connect to Zealand (Denmark) and Germany, and potentially to more countries in the future.
The BEI project has the potential to become the first multi-vendor multi-terminal DC link to be operational in Europe.
The project includes options for parallel operation on the AC, or multiterminal connection on the DC side.
The key deliverables of this project are intended for use by Energinet directly in the tendering process for developing the BEI project.
RTEi will review and update of offline simulation model requirements for HVDC and offshore wind farms as well as establish a multi-party offline model and data-exchange framework that takes into account the numerous stakeholders in the BEI project, including wind farm owners, HVDC equipment providers and wind turbine manufacturers.
It will also draft specifications for real-time simulation requirements for offshore wind farms connecting to the energy island.
RTEi HVDC Power Systems Expert Pierre Rault said: “The challenges of this complex and innovative project lie in the need for detailed and thorough specifications in multiple aspects of system development, which will play a key role in maximising the interoperability of an integrated system of multi-vendor, multi-terminal, and multi-stakeholder HVDC-connected OWPPs.
“In order to establish these specifications and criteria, one should be adequately informed of the state-of-the-art technological development in HVDC power system engineering, electromagnetic transients (EMT) modelling and simulation, as well as supporting multi-vendor interoperability studies.”