Offshore energy hubs - high level system description and requirements

In this document Energinet is presenting high-level conceptual descriptions of a generic offshore Energy Hub, without naming specific countries, detailed topologies, or specific solutions. 

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The intention with the document is to guide research projects which seek to investigate solutions for the future offshore development and integration of Offshore Energy Hubs. 

One of the major design decisions to be made for Offshore Energy Hubs (OEH), is whether the HVDC-VSC interconnectors of the hub should be coupled on the AC or the DC of the offshore substation. This decision has impact on multiple aspects of the hub design, such as:

  1. Cost of the electrical infrastructure
  2. Transmission losses
  3. Electrical system robustness
  4. Market operation of the electrical components
  5. The future expandability of the system

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