PA #28 for ITER's electrical network signed
For those who keep track, the score is up to 28. On Monday night, at the end of a long and intense first day of the ITER Management Advisory Committee meeting, Director-General Kaname Ikeda and Didier Gambier, the Head of the European Domestic Agency, signed the Procurement Arrangement for engineering detailed design of the ITER steady state electrical network (SSEN) and the pulsed power electrical network (PPEN).
In summary, the SSEN and the PPEN consist of 75 power transformers, 250 high and medium voltage switch rooms, 750 low voltage distribution networks and 100 km of medium and low voltage cables.
The SSEN and PPEN are supplied via the French National Grid at 400kV. The current is then transformed to appropriate voltage levels and distributed to all the ITER electrical components. In the event of loss of power supply from the National Grid, the SSEN will continue to serve the important electrical components via a system of standby supplies that incorporates on-site high voltage diesel generators, low voltage uninterruptible power supplies and DC batteries.
In terms of size and complexity, the SSEN distributes 120 MW, which is approximately twice the power of an equivalent system utilized on a large nuclear power plant. The PPEN is designed to distribute up to 500 MW continuous power.
This Procurement Arrangement covers the engineering detailed design of the SSEN and PPEN and it is worth about EUR 11 million. The contracts for the procurement and the installation of the SSEN and PPEN materials are planned to be signed in 2010 and 2011. "It's a major achievement for the Electrical Engineering Division, and I would like to thank all people involved in this effort," Joel Hourtoule, SSEN Section Leader and Responsible Officer in charge of this part of the project, said after the signing ceremony.
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