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The Project for the Consolidation
and Upgrade of the CERN
Electrical Distribution System
Geneva, October 24th – 26th, 2012
Why the review ?
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The Electrical Engineering Group has started a major
consolidation and upgrade project which has to be
submitted to the scrutiny of experts and users in
order to validate the technical choices.
Why this project ?
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During the construction years of the LHC, the
infrastructure systems were somehow neglected and
have, for some parts, reached the end of their lifetime.
In addition, with the new projects that CERN is
undertaking, some resizing has become necessary.
2 - Roberto Saban
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
What is the Impact ?

The flagship of the CERN accelerator complex is the
LHC which is essentially made of high-tech
superconducting components: the superconducting
magnets and the superconducting accelerating cavities
in the collider and the superconducting magnets in the
experiments. They are served by the biggest complex
of cryogenics plants in the world.
Any interruption of power entails very long
downtimes of the collider and the associated
experiments: a few minutes take days to recover.
3 - Roberto Saban
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Electrical
Engineering Group
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The EL Group operates the CERN electrical
distribution network, which supplies
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the accelerator complex,
the associated experiments,
the computer centres and
the office buildings.
Also, the Group analyses and makes projections on
the electrical energy consumption and manages the
relations with the energy suppliers. It is the
responsibility of the Group to renovate and extend
the network as equipment ages and new needs arise.
4 - Roberto Saban
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
Why Now ?
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After three years of operation, the accelerator
complex is going to be shutdown for approximately
two years to carry-out major repair, maintenance,
consolidation and upgrade work: LS1
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Many of the consolidation and upgrade actions can
take place while the accelerator complex is in
operation, others can only take place during a
shutdown. Part of the consolidation and the first
phase of the upgrade campaigns have been studied,
procured, prepared and have started. A lot is planned
during LS1 and beyond.
5 - Roberto Saban
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Reviewers
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Academia
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Sidi-Rachid Cherkaoui
EPFL
Obtained his MSc degree at the EPFL, after a four year experience in industry
joined the EPFL power system laboratory where he achieved his PhD thesis in
the field of optimal operation topologies for distribution systems. In this
respect, he was the recipient of the ABB Swiss Award’93. He lead the research
activities in the field of optimization and simulation techniques applied to
electrical power and distribution systems.
Since 2009, as senior scientist, he is the head of the power system group
(PWRS) at EPFL. Presently the main research topics of his group are
concentrated on electricity market deregulation, distributed generation and
storage with reference to distribution systems and smart grids, and power
system vulnerability mitigation.
Industry
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6 - Roberto Saban
Joaquin Cabetas
Iberdrola
Electrical Engineer with a specialization in Power Systems, he did the Power
Systems Engineering Course at Schenectady (NY) and has worked at Iberdrola
Group in Spain and Brazil since 1984. At the present, he is the Director of
Planning and Asset Management of Iberdrola Distribution Spain.
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Reviewers
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Industry
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7 - Roberto Saban
Ivano Gentilini
ENEL
Is an Electrical Engineer, currently responsible for Primary Substations standardization
in the Engineering and Standardization Department, Infrastructures and Network
Division of ENEL. He has previously held a position in the same department in the
Infrastructures and Network Division, in charge for the activities related to the
following electrical network components: HV/MV transformers, instruments
transformers, Petersen coils. He has a number of publications on this subjects and is an
active member of Technical Committees and Working Groups of the IEC and the
corresponding national society, the CEI.
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Reviewers
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High-energy physics labs
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8 - Roberto Saban
Frederick Bordry
CERN
Graduated from the Ecole Nationale Supérieure d’Electronique, d’Electrotechnique,
d’Informatique et d’Hydraulique in Toulouse, France, with a PhD in engineering and
another in science from the Institut Nationale Polytechnique, also in Toulouse. He
spent the first ten years of his career teaching and conducting research at these two
institutes. He worked two years in Brazil (1979-1981) as professor at the Federal
University of Santa Catarina (Florianópolis). In 1981, he was appointed senior lecturer
at the Institut National Polytechnique. He joined CERN in 1986 in the group working
on power converters for LEP. In 1988 he moved to the Operations Group as engineer
in charge of the SPS and LEP. Later he joined the Converter Group as the head of
design for power converters for the LHC. He was appointed leader of the Power
Converter Group in 2002, a position he held until December. In 2008 he was also the
deputy head of the Accelerators and Beams Department. As of 1 January 2009 he is
the Head of the CERN Technology Department. The Technology Department is
responsible for technologies which are specific to existing particle accelerators,
facilities and future projects.
Jean-François Bouteille
ESRF
Earned his PhD in automatic control, signal processing and power electronics. He
joined ESRF in 1987 where he was head of the booster power supply head, (power,
electronics, digital regulations software) and supervision of the 50Hz distribution at
ESRF. In 1995 he became deputy of the power supply group and responsible for the
quality of the electrical power at ESRF, then Head of the Power Supply Group. His
domain of activity today includes the design of new high gradient magnets and global
approach of ESRF power systems. Also, he is encouraging all the synergy between the
accelerator division and the technical services for efficient use of electrical energy.
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Reviewers
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High-energy physics labs
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9 - Roberto Saban
Serge Claudet
CERN
Graduated in 1989 as Mechanical Engineer from the Ecole Nationale des Arts &
Metiers in Paris (France). At CERN since 1991, with helium refrigeration projects for
the LEP superconducting cavities, and since 1997 for all type of helium refrigeration
and infrastructure for the LHC. Since 2007 and the first LHC cool-down, he is Head of
the LHC Cryogenics Operation team.
Hans-Jörg Eckoldt (Chair)
DESY
Electrical Engineer to day leading the section of the Magnet Power Supplies and
Modulators. He is responsible for the General Electrical Supply, the Water Cooling, the
Air Conditioning and Heating, the Tunnel Ventilation, Magnet Power Supplies and the
RF Supply
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Reviewers
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High-energy physics labs
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10 - Roberto Saban
Steven Hayes
FNAL
Is an Electrical Engineer in the FERMILAB Accelerator Electrical Engineering Support
Department. He spent most of his 36 years at the lab working on the power
converters for the large accelerators but now work on all converters from the Ion
Source to the experiments. This includes the Proton Source, Main Ring, Tevatron and
Main Injector. The Accelerator Electrical Engineering Support Department designs and
maintains all of the power related items needed for the converters to work correctly.
The Department is also busy with the upgrade of the present power grid in the
proton source.
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Reviewers
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High-energy physics labs
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11 - Roberto Saban
Marzio Nessi
CERN
Earned his Ph.D. in physics from ETH Zurich, Switzerland. As a research staff member
at Rice University, he worked on experiments at Brookhaven National Laboratory, at
Fermilab and at CERN. He has been active in collider physics at CERN since 1989,
starting in the UA2 experiment. He has been involved with the ATLAS experiment
from the beginning, and is presently the ATLAS Technical Co-ordinator.
Yves Thurel
CERN
Is a Power Electronic Engineer who designed a 4-quadrant power converter for LHC:
LHC120A-10V and followed two other contracts for the same type of power
converters: LHC600A-10V and LHC600A-40V which totalize 750 4-quadrant power
converters installed in LHC, ranging from 1 kW to 24 kW. He has become a specialist
in the Electromagnetic Compatibility domain and radiation hardness for the Power
Converter Group. He is currently in charge of the Radiation-To-Electronics EPC
Power Converters Project, and is designing new radiation tolerant power converters
for LHC. Finally, since 2009, he leads the Low Power Converter section in the EPC
group.
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Programme
Wednesday
October 24th
AM
The Status
Thursday
October 25th
Friday
October 26th
AM
AM
Coffee Break
The Consolidation &
Upgrade Project
The Distribution
Network
Q&A
Coffee Break
Lunch
PM
The
Transmission/Transpo
rt Network
Site Visit
The Protection
System
Dinner
Power Quality
Preparation of the
Draft report
Coffee Break
Presentation of the
Conclusion of the
External Review
Lunch
PM
12 - Roberto Saban
Discussions with
Specialists and
Preparation of the
Draft Report
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Speakers
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François Duval
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Davide Bozzini
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Member of the Operations Section in the EN-EL Group
Jean-Pierre Sferruzza
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Head of the High Voltage Section in the EN-EL Group
Henry de Maynard
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Head of the Electrical Engineering Group (EN-EL)
Member of the High Voltage Section in the EN-EL Group
Karsten Kahle
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Head of the High Power Converters Section in the Electrical
Power Converters Group (TE-EPC )
13 - Roberto Saban
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012
The Questions
Item 1 The scope of the consolidation is in-line with the needs. Not too short,
not too much.
Item 2 All the issues present in the network today have been addressed in
the consolidation plan. Nothing fundamental has been forgotten.
Item 3 All the equipment proposed for the renovations/consolidations will
guarantee optimal operation conditions up to 2035.
Item 4 The present CERN electrical distribution network cannot cope with
the 7 TeV operation of the LHC.
Item 5 All the new needs justifying the upgrade have been correctly
addressed. Not too short, not too much.
Item 6 All the design aspects (power, availability, reconfigurability, energy
quality) of the upgrade have been studied sufficiently.
Item 7 Are the present consolidation and upgrade projects appropriate and
is their cost accurate?
Item 8 To what extent an overall (but feasible) reconfiguration/redesign
would result in a more robust and better energy quality network.
14 - Roberto Saban
The Project for the Consolidation and Upgrade of the CERN Electrical Distribution System
October 11th, 2012