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Hydrogen Cooled Generators0 pages
HYDROGEN COOLED, 2 POLE
TURBOGENERATORS
PRODUCT SPECIFICATION
Introduction
Hydrogen cooled generators, designed to be driven by both gas turbines and
steam turbines, are used extensively in thermal and nuclear power plants.
The characteristics of these machines are the result of an in-depth
knowledge, gained from BRUSH’s extensive experience, and the latest design
techniques, backed by modern manufacturing methods and plant. To date, a
total of 106 hydrogen cooled generators have been installed, providing a total
of 11,250MW and establishing an enviable reputation for reliability and
availability.
The machine hall of Melnik II Power Station
in the Czech Republic.
Features
Hydrogen cooled generators provide the following features:
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Reduced weight of active components.
More economical operation, particularly under part load conditions.
Improved efficiency as a result of significantly reduced ventilation
losses.
Extended insulation life.
Specifications
The machine hall of Nováky Power Station
in the Slovak Republic.
Voltage range:tt
Speed:ttt
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Excitation:t
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Output range:tt
up to 18kV
3000 rev/min for 50Hz operation
3600 rev/min for 60Hz operation
Brushless or static
200 – 375MVA
Hydrogen cooled generators comply fully with the provisions of the relevant
international standards.
The most common standards are:
Installing the generator stator at Mejillones
Power Station in Chile.
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CSN EN 60034-1+A1+A2
IEEE C50.13 at 60Hz
IEC 60034-1 at 50Hz
IEC 60034-3 at 50Hz
Gas supply system
The gas supply system, which can be “tailored” to suit the individual
requirements of a power station layout, incorporates the equipment for
scavenging air from the generator with carbon dioxide and for the first
fill and subsequent continuous maintenance of the hydrogen coolant. A
“freezing out” process achieves hydrogen drying.
Inserting the rotor of a turbogenerator at
Sevo Power Station in Finland.
