Enable Recite

Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the ITER Organization publication(s) that you have requested. ITER Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from ITER Organization.

For more information, see our Privacy policy.

News & Media

Latest ITER Newsline

  • FEC 2020 | E-conference opens, participation never higher

    The 28th IAEA Fusion Energy Conference (FEC) is off to an auspicious start. Open to the public for the first time thanks to the technical possibilities of an al [...]

    Read more

  • Vacuum vessel in Europe | Fitting the pieces virtually

    A 'virtual fit' tool developed by the European Domestic Agency is helping the vacuum vessel manufacturing team anticipate the challenge of final assembly—the mo [...]

    Read more

  • Gas injection system | Last manifolds completed in China

    Contractors to the Chinese Domestic Agency have completed an important part of the gas injection system—the distribution manifolds that carry gas species from t [...]

    Read more

  • Magnets | Seventh vertical coil reaches ITER

    Seven toroidal field coils have reached ITER in the past year. The latest, TF3 from Europe, passed through the ITER gates on Friday 3 May. The European and Japa [...]

    Read more

  • Tritium Building | Work resumes

    The energy-producing plasmas in ITER will be fuelled in equal measure by the hydrogen isotopes deuterium and tritium. Deuterium is a stable element that industr [...]

    Read more

Of Interest

See archived entries

Electrical network

Independance Day

For over 10 years, power has been supplied to ITER by the neighbouring CEA research facility. Since Saturday, however, the entire ITER site is independently powered from an electrical substation that draws power directly from the four hundred thousand volt (400 kV) national electrical grid. This power is needed initially to support ongoing construction activities.

Members of the electrical engineering and science/operations groups at ITER have a reason to smile: the first ITER system has successfully entered operation. (Click to view larger version...)
Members of the electrical engineering and science/operations groups at ITER have a reason to smile: the first ITER system has successfully entered operation.
After several months of tests and commissioning, the first ITER system—electrical distribution—has entered into operation. 

Four large transformers supplied by the US Domestic Agency step down the voltage to twenty two thousand volts (22 kV), which is then switched through a set of busbars into cables that distribute it around the site to transformers supplying each building.

The switching equipment was supplied by the US Domestic Agency and installed by the European Domestic Agency. By combining different in-kind contributions, along with the central control system developed by the ITER Organization itself, the electrical distribution system demonstrates the integration that will be continued now for each system to come.

Making such a switchover is not a simple process. It required the entire ITER site to be "turned off" so that the high voltage connections could be reconfigured. All construction work was halted, computer servers switched over onto their back-up generators, worksite offices closed, and silence settled onto the construction site for the first time in years as ventilators, pumps and machines slowed to a stop.

In a temporary control room on the platform, engineers worked during Saturday's shutdown to reconfigure the high voltage connections. Outside, the worksite was exceptionnally quiet ... (Click to view larger version...)
In a temporary control room on the platform, engineers worked during Saturday's shutdown to reconfigure the high voltage connections. Outside, the worksite was exceptionnally quiet ...
Meanwhile in a temporary control room setup in the Substation Building engineers worked on reconfiguring the networks, while teams of operators drove around the site switching off each building one at a time. At the end, the only building left with lights on was the substation itself, which supplies its own power. After the main incoming switches were swapped over, the buildings were switched back on one by one. Engineers watched carefully as the electrical load rose on each circuit, checking that the protection settings were correctly made and that the equipment worked as expected.

Before nightfall all the buildings were back to normal and the generators could be switched off. The next step was to wait for the start-of-work Monday. As building heating systems turned on and activity began, the loads increased and the new system settled down without a hitch.

The first ITER system has thus entered operation—the first of many such steps as we complete construction, take each system into operation, and build up to integrated commissioning, which will mark the official start of the ITER operations phase. Integrated commissioning will conclude with the machine's First Plasma.


return to the latest published articles