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General enquiries
Tel. +45 7916 6666
semco@semcomaritime.com

 

Semco Maritime
Esbjerg Brygge 30
DK- 6700 Esbjerg

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Electrical infrastructure

We are experts in offshore electrical engineering

The demand for renewable energy is growing and so is the scale of wind farms - and this is where we come in!

Engineering and design offerings

Our engineering 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. Click below to see an overview of our capabilities and offerings.
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Every aspect of offshore engineering


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:

Onshore substation
Complete civil, mechanical and electrical design and layout including landfall cables/transmission lines

Offshore substation
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.

Subsea cables
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.

Generic
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.

Case: Ørsted Wind Power A/S

Basic design of low voltage and utilities for Hornsea Two

The scope of work covered basic engineering design of one 1,380 MW offshore substation and one reactive compensation station including low voltage, utility and diesel systems, telecom, HVAC, fire alarm systems, cable systems and space optimisation, a specific cost-out process and 3D designs in the UK sector (2018).

Case: Niras A/S and Copenhagen Intrastructure Partners

Electrical ITT documents for Changfang

The creation of the electrical documents for the invitation to tender (ITT) for the offshore and onshore substations for the Changfang wind farm in Taiwan (2018). The engineering included the electrical system design and the equipment specifications.

Case: Northland Power and Yushan Energy

Full FEED study for Hailong II and Hailong III

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.

Case: Customer confidential

Full FEED study for HVDC platform

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.

Case: Jhong Jie Industrial Co. Ltd.

Feasibility study for alternative grid connection for Changhua

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.

Case: EPD Denmark A/S

Electrical FEED study for Vesterhav South and North

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.

Wherever you are in the world, we have technicians ready to serve you ...

 

Derek Phillips

Lead engineering and substation consultant

denp@semcomaritime.com
+45 7914 9294

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg
Denmark

Hasan Niels Jørgensen

Lead engineering and substation consultant

nhj@semcomaritime.com
+45 7916 6971

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg
Denmark

Engineering studies and concepts

Feel free to download our literature about electrical engineering. See project references and capabilities with engineering studies and concepts.