The Siemens installation consists of one substation with four Geafol cast resin transformers, four air-insulated medium-voltage Nxair switchgears as well as one 16-MVA frequency converter. The cast resin transformers with a rated power of six and 16 MVA are especially suited for challenging environmental conditions, such as the salty air present at the port. The switchgear is robust and has a compact design, making it suitable for this application.
For an uninterrupted and
efficient power supply of the mooring ships the Siemens converter system
“Siplink” is used. It features a frequency converter and a software for central
controlling of the two berths. With the system, two medium-voltage networks
with different frequencies can be connected. In this
case the local distribution grid with 50 Hz and the ship’s onboard electrical
system with 60 Hz. Siplink synchronizes both networks and takes over the power
supply automatically within a few minutes. In addition, it coordinates the energy
supply of the ships’ two networks so that power can be supplied to both simultaneously.
“With this set up, we are able for the first time to supply two ships
simultaneously with the necessary 60-Hz onboard frequency by means of one shore
power system,” said Axel Mohr, head of sales for Distribution Systems, Region North,
at Siemens Smart Infrastructure. “We’re excited to support the Port of Kiel
with this sustainable solution, thereby taking on a leading role in Europe
together. Such systems will become increasingly important in the future, also
outside of Germany, as climate protection goals are implemented.
With its “Master Plan for 100% Climate Protection”, the City of Kiel has
an ambitious roadmap to be CO2-neutral by 2050. The new shore power system at the
Port of Kiel aims to support this goal with the reduction in CO2 emissions it will
bring. The shoreside power supply installed by Siemens in the spring of 2019 at
the Norwegenkai has already started operations. To date, it has helped slash CO2 emissions by about