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E-LNG - Electric drive solutions - Statoil, Hammerfest One of two liquefaction compressor drivers rated 65 MW at 3600 rpm for the Statoil
Snøhvit project in Hammerfest (Norway). These LCI-supplied 2-pole brushless synchronous
motors are complemented by a 32 MW/3600 rpm and one 16 MW/6600 rpm
motor, all of which have been full-load full-speed tested prior to shipment to
the site.
Additional Siemens scope of supply:
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VSDS-driven compressor string for the methane mix train; |
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32-MW VSDS for the liquefication compressor; |
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CO2 re-injection compressor; |
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harmonic study; |
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containerized load-commutated inverter (LCI) frequency converter
units, drive control and fault diagnosis systems; |
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transformers; |
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containerized harmonic filters; |
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converter cooling systems and auxiliary equipment. |
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E-LNG - Electric drive solutions - NAM, GroningenOne of three motor-driven natural-gas compressors rated 38 MW/4200 rpm at NAM’s
UGS facility near Groningen, Netherlands. Operational since 1986, these machines
were the largest VSDS at that speed until the Hammerfest drives were built in
2004.
Additional Siemens scope of supply:
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entire electrical system from 150 kV power supply to medium and
low-voltage distribution; |
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harmonic filters, including installation and commissioning; |
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LTSA for the drive systems. |
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E-LNG - Electric drive solutions - NAM, Groningen
One of NAM’s compressor stations
producing natural gas from the Groningen gas field in the Netherlands. A
series of 16 (ultimately 21) motor-driven depletion compressor sets rated 23
MW at 6100 rpm have been supplied since 2001, the world’s first electrical
high-speed variable-speed drive systems in that class with active magnetic
bearings.
Additional Siemens scope of supply:
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harmonic filter plant and all auxiliaries; |
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fan motors for cooling banks; |
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system integration; |
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conceptual and detail engineering; |
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network analysis and vibration studies. |
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E-LNG - Electric drive solutions - North AfricaTwo starter/helper motors rated 17 MW at 3600 rpm supply starting power and
additional torque for the gas turbines at an LNG plant in North Africa. A total of
eight such 2nd-generation variable-speed drive systems have been ordered for
mechanically driven LNG refrigeration compression systems since 2003, using 2-pole
solid-steel turbo-rotor motors with brushless excitation and LCI-type variable-frequency
drives. |
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E-LNG - Electric drive solutions - STEAG, GermanyTwo boiler feed-pump drivers rated 15.6 MW at 5100 rpm for the German utility
company STEAG. These LCI-supplied motors operate successfully since 1981 in a
thermal power plant 24 hours/365 days without being disassembled for service. The
drives initiated the industrial use of high-speed LCI drives and have many similar
installations. |
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