Renovation of the electrical substation 400/18 kV BE

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Renovation of the electrical substation 400/18 kV
BE
M. Delidais, A. Vairo

• ST/EL-NP

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Introduction powering CERN
The CERN is powered by
The 400/66/18 kV BEH-BE substation SPS pulsed
network, LEP (LHC) machine and general services
The 130/18 kV ME10 substation
Meyrin site and surface installations.
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Installed Power at the BE substation
LEP feeding 2 x110 MVA
SPS feeding 3 x 90 MVA
Reactive power of compensators 2 x 120 MVAR
Total reactive power of compensators with the
third Compensator 370 MVAR
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• Reasons for the renovation

New loads TI2, TI8 and the third compensator
Obsolescence of the main elements
switchboards, protection relays, control system,
etc.
Improve the performances and the reliability of
the electrical substation
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Side 400 kV

• Factory reconditioning of the 3 switchgears
  Magrini.

• Maintenance of the 3 line insulators.

• Set up of new control system for the 400 kV
  power lines.

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Side 18 kV

• Replacement of the existing switchboards 18kV
  Magrini with new Schneider MCset.

• Set up of new auxiliary systems.

• Set up of new control system including 18kV, 400
  kV sections and compensators.

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BE Substation - Future configuration

• Nouvelle implatation avec safe room

• New distribution configuration

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Budget

• Civil engineering safe room, cable
  passages 150.000 CHF
• False floor Safe room 50.000
• Dismantling and modification works 70.000
• 18kV Switchboard 2.520.000
• Control equipment 18kV section 690.000
• Control equipment 400kV section 295.000
• Insulated Busbars 665.000
• Reconditioning 400kV Switchgears 410.000
• Auxiliary systems (48 Vdc, UPS, etc.) 230.000
• LV installations 150.000
• Power cabling 50.000
• Cooling and ventilation systems 40.000
• General Services 30.000
• Miscellaneous 100.000
• TOTAL 5.460.000 CHF

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Planning
Starting of the interventions dismantling of the
existing 18kV power and control installation
13.11.2000
Commissioning of the new Substation
May-June 2001
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