DolWin3 gets upgraded
GE Renewable Energy’s Grid Solutions business has announced
that the offshore grid connection DolWin3
in the North Sea was recently upgraded.
The upgrades included enhancements to the valves and control system. In
addition to improving the overall performance of the grid connection system,
the upgrades also reduce maintenance.
Located approximately 80 kilometers from land, DolWin3
with the offshore converter platform DolWin gamma connects the Merkur
in the south-western part of the German North Sea with the onshore transmission
grid. It is operated by transmission system operator TenneT.
“The offshore grid connection DolWin3 has been transferring power from
wind generation in the North Sea to the German grid since the third quarter
of 2018. The updates that have recently been tested and certified give
us confidence that our grid connection will still be stable and reliable
in the future as we move toward our ultimate renewable energy goals in
the future,” said Marco Kuijpers, Director Large Projects Offshore
of TenneT. “In all these years of trustful cooperation, we have always
had a solution-oriented partner in GE.”
The DolWin3 project uses Voltage Source Converter (VSC) technology, the
newest HVDC technology featuring highly specialised power electronics,
which are designed to allow for enhanced operational capability, greater
power and frequency control, compared with line commutated converter (LCC)
“The completion of the final certification tests for DolWin3, along
with our recent award of the Sofia HVDC link, are further evidence that
GE’s Voltage Source Converter technology is now well established and that
GE has the ability to commercially deliver on these solutions,” said
Raj Iyer, Head of Grid Integration Solutions for GE’s Grid Solutions business.
“The DolWin3 upgrades incorporate learnings from our recently released
industry leading second-generation VSC valve and eLuminaTM control system.”
In July 2017, the heart of the DolWin3
grid connection, the DolWin gamma converter platform, was installed at
sea. The platform, built in Warnemünde, Mecklenburg-Western Pomerania,
covered a six-day journey along the German and Danish coasts to its final
location in the North Sea. Just over one year later, in the third quarter
of 2018, the 900 MW grid connection was put into operation.
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