SHIP TO SHORE CONNECTION FOR NAVY BASE

1. Energy Infrastructure
SHIP TO SHORE
CONNECTION
FOR NAVY BASE
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2. Shore connection
Frequency conversion shore - ship
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3. Introduction
The Italian Navy naval base “Mar Grande” in
Taranto, opened in June 2004, was created to
improve efficency and to reduce the impact on the
city of the old Naval Base.
The Navy Station is placed over an area of about 60
hectares and it is the most magnificent achievement
of the Italian navy in the post-war period.
NIDEC ASI has contributed to this project by
providing the electric system of the 50/60Hz
conversion stations.
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4. Scope Of Supply
The conversion system is made by:
• qty. 10 rotating converter systems complete with:
• excitation systems
• devices for starting/network connection
• MV switchboards
• Supervision and control system
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5. Rotating Converter System
The rotating converter systems are composed by:
• Qty.10 Motor-Generator sets 3000 kVA each, with a 10 pole synchronous motor
and a 12 pole synchronous generator, rigidly coupled for frequency conversion from
50 to 60Hz.
• Qty.2 (redundant) frequency converter to start-up each set and take it to the
synchronous speed
• Qty.20 exciter controls
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6. Rotating Machines Layout
MOTOR MASS (about)
GENERATOR MASS (about)
BASEPLATE MASS (about)
TOTAL MASS (about)
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9.900 kg
11.200 kg
12.000 kg
33.100 kg
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7. Overall Diagram
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8. Overall Diagram
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9. Rotating Machines Data
MOTOR MACHINE TYPE: MSN 800 Y 10 3 ph
synchrounous Type
GENERATOR MACHINE TYPE: GSN 800 Y 12 3ph
synchrounous Type
Rated power: 2520/2720 kW/kVA @ 600 r/min
Rated power: 2400/3000 kW/kVA @ 600 r/min
Rated voltage: 8000 V
Rated voltage: 8000 V
Rated frequency:
50 Hz
Rated frequency: 60 Hz
Poles: 10
Poles: 12
Power factor: 0.95
Power factor : 0.8
Ins. / Temp. Raise: F / F
Ins. / Temp. Raise : F / F
Design Temp.:
Design Temp.:
40°C (Air)
40°C (Air)
Excitation Type: Brushless
Excitation Type: Brushless
Cooling Method: IC 01 (self circulation)
Cooling Method: IC 01 (self circulation)
Total Mass (about): 9900 kg
Total Mass (about): 11200 kg
Enclosure: IP 23
Enclosure: IP 23
Mounting: IM 7315
Mounting: IM 7115
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10. Rotating Machines Layout
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11. Frequency Converter
Frequency converters:
• Based on NIDEC ASI type thyristor converter Silcovert S (LCI) with digital control
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12. Exciter System
Exciter system:
• The control of the excitation of the each motor/generator is done through an AC/DC converter
type NIDEC ASI Silcostat.
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13. Control System
The overall conversion system is managed via a control system PLC based with relevant HMI to
control and monitor its operation
The control system is in charge in particular of the automatic connection/disconnection of each
group in case of increased/decreased power needs.
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14. Main MV switchboard
Transformer
2004 –“Mar Grande”Naval base - Taranto
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