POWER SUPPLY FOR SKA: a technological challenge .
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POWER SUPPLY FOR SKA: a technological challenge.
Dr. Germano Bianchi INAF-IRA
Rome SKA Meeting, 19-20 June 2012
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The win win solution will bring the construction of the SKA radiotelescope in two remote areas (South Africa and Australia). The system power supply will represent a technological challenge.
AUSTRALIA
SOUTH AFRICA
Low frequency band
Medium-High frequency band
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Power generation technologies
Green energy:
Nuclear
Hydrocarbons
• Gas• Petrol• Carbon
• PV solar panel• Solar thermodynamic• Wind turbines• Hydroelectric• Biomasses
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Green energy solution
POWER STORAGE
Advantagies:1. It is a free energy2. Local generation:
• It does not need power grid• No fuel transportation
3. No CO2 emission
Disadvantagies:1. Discontinuous generation
The more suitable solution is the green energy.
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Present storage solutions
1. Batteries2. Hydrogen3. Thermal (chemical salt)4. Flywheel
Flywheel
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Power Requirements
AA-low: 10 MW
AA-mid: 30 MW
Dishes:15 MW
Super computers and facility: 40 MW
Central site/infrastructure:10 MW
(power consumption estimated in SKA phase II)
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TOTAL: 105 MW 920 GWh/year
Power RequirementsPO
WER
(MW
)
Dishes AA-mid AA-low Super computer Infrastructure0
5
10
15
20
25
30
35
40
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Processing Engines currently available
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PV
chargecontroller
Battery
DC-DCconverterSolar
charger
Front-end
Self-powered solution ….
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Conclusion- Solar and wind at present seems to be the more
suitable renewable energy to be exploited for SKA - Storage technologies need to be deeply investigated
- In the design phase, reliability and low power consumption must be one of the more important constraints to be considered.
THANK YOU