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portation to and from the site and loading of the vessel. On the 79th
day from the start up of the installation, the 72nd and last turbine was
delivered to its final destination at Nysted Wind Farm.
The commissioning works commenced as soon as the first turbine
had been installed and proceeded on parallel to the installation. Grid
connection was established in the beginning of July, 2003 and on July
13th the first power was exported to shore. By the end of August,
all turbines had been commissioned and were in automatic operation,
and following a three-month adjustment and testing period, the
project was taken over on December 1st 2003, one month ahead of
schedule.■
Fact about Nysted Offshore wind farm:
Owner: E2, DONG, Sydkraft
Operator: E2, SEAS Transmission
Project Rating: 165.6MW installed capacity
Turbine type: Bonus 2.3MW Combistall
Service provider: Bonus Energy A/S
Key dates:
October 8th 2001: Contract awarded to BONUS Energy A/S
May 11th 2003: First turbine installed on site
July 13th 2003: The first power is exported to shore
August 31st 2003: All turbines are commissioned
December 1st 2003: The wind farm is taken over by the owners
4 Offshore Center Denmark
Newsletter ON/OFF 3 - August 2004
Results from the
development
project “How to
board an Offshore
Wind Turbine”
by Ulrik C. Jensen, RAMBØLL & Peter Blach,
Offshore Center Danmark
Offshore Center Danmark has, within a development project financed
by the Danish Ministry of Science, Technology and Development
(VTU), seized the initiative to review and develop suggestions for
safe and economical methods to board offshore wind turbines. The
results from the development project were not envisaged as the suggested
solution for actual projects, but as a description of generic
methods of landing including advantages and drawbacks, which later
will be adapted to actual conditions.
After a project period of one year, the results of the project were
made available to the offshore wind turbine industry and the educational
institutions, on a session June 10th at the “Offshore Wind
turbine—Surrounding Facilities” conference at Aalborg University in
Esbjerg.
Offshore wind turbines are a segment of the wind turbine business
growing rapidly these years. It is also a type of installation that holds
great technical, environmental and economical challenges. A lot of
knowledge from the offshore oil & gas related business can be used
during the installation of offshore wind turbines, but the area also
holds its unique challenges. An excellent example is boarding of the
wind turbines, which is partly similar to what is known from oil drilling
platforms, but partly has it own characteristic features.
During the task of making offshore wind turbines a reliable and costeffective
energy source, safe access to the installations is an essential
component.
In connection with the considerations to be made, it is vital to take
into mind that the transfer of personnel and equipment to the wind
turbines should be done as safely as possible taken into account the
heavy sea conditions that often exist at an offshore wind farm.