Director, EPC Sales, Renewables
Semco Maritime A/S
Esbjerg Brygge 30
From the onshore substation to and including the offshore substation and wind farm, our expertise covers every aspect involved in transmitting electricity from offshore turbines to the onshore grid. Thus, we can offer a full scope of engineering services, ranging from conceptual studies through front-end engineering and design (FEED), basic design, detailed design to procurement, construction, installation, operation and maintenance.
With more than 30 years of experience working in the offshore energy sector, we understand the challenges involved in operating in a harsh offshore environment. Moreover, when you are a long way from shore, you need reliable solutions you can count on.
Based on the vast in-house knowledge and experience of our engineering teams and external partners we can offer as an example the following key topics as part of a FEED:
Complete civil, mechanical and electrical design and layout including landfall cables/transmission lines
Complete offshore substation topside design covering all electrical and mechanical systems and all structural elements complying with requirements. Geotechnical design and design of piles, the substructure and foundations.
Electrical cable design, determination of the ideal voltage levels and optimal export and array cable layout.
Balance of Plant
Covering such topics as the overall wind farm single line diagram, the redundancy philosophy, preliminary grid study analysis to ensure grid compliance, overall SCADA architecture, a high-level protection philosophy and an operational philosophy to mention but a few.
Covering such topics as CAPEX and OPEX optimization, the project schedule, design parameters based on our experience and the local environment, employer’s technical requirements, tender package documentation and conceptual reports to mention but a few.
A full FEED study aimed at optimizing the grid connection solution for the Hailong II and Hailong III offshore wind farmsi n Taiwan (2018). The study included array cables, offshore substations, export cables, onshore substation, grid calculations and details around jacket construction and soil conditions and cost models for the fabrication of different sizes of offshore substations.
A full FEED study for all auxiliary systems for a 1.2 GW HVDC offshore substation, including construction, onshore testing, offshore installation, offshore testing and maintenance in the UK sector (2018). The FEED was developed in close corporation with the supplier of the HVDC/HVAC equipment and the yard.
The feasibility study consisted of a technical investigation regarding the grid connection of 6.5 GW of offshore wind farms in Taiwan (2017) including part of the export cable layout. The study included the design and layout of an onshore switching station, the route planning of 345 kV transmission lines to connect to the Taipower grid, cable corridors and a budget and a proposed financial model for bankability.
The FEED study consisted of a technical investigation in respect of utilization of 33 kV or 66 kV array grids in the Danish sector (2016). The study included the specification of all electrical disciplines, planning onshore substation designs, cable corridors and landfall sites, cost estimation model and development of a SCADA and station control systems.