The 380kV transformer substation has already been constructed to a compact design using gas-insulated technology for the planned runway in the northwest of the airport. The 380kV overhead lines routed to this substation have to be laid underground for the last kilometer.
RWE Transportnetz Strom will implement this line section with two systems in the form of buried 380kV gas-insulated extra-high voltage lines (GIL). Each system has a transmission capacity of about 1,800MVA. The GIL link, consisting of two three-tube units, will be connected to the supply system in the spring of 2010.
Klaus Kleinekorte, technical director of RWE Transportnetz Strom, said: What we want to do with the pilot project is to try this transmission technology as an alternative to cable solutions. We have already carried out joint tests with Siemens on a prototype which have provided convincing proof of its technical feasibility.
