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Electric drive solutions
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Dedicated solutions for electric LNG
Over past decades, liquefaction of natural gas has matured to become an economically
viable as well as a technically and commercially proven scheme for shipping
natural gas from remote production locations to distant consumers. Reducing the
specific cost of LNG by upscaling liquefaction trains and increasing their productivity
through innovative technologies is a recognized industrial trend. The reduction
of greenhouse-gas emissions and construction times has become an additional issue,
challenging traditional approaches.
Enter Siemens. With a complete range of rotating and electrical equipment, power
generation, transmission and distribution systems, industrial controls & automation,
and life-cycle services, Siemens provides a host of solutions designed to realize
maximum LNG plant availability, and meet any of tomorrow’s challenges, technical,
economical or environmental.
Innovative design, excellence in engineering and project management, maximum
lifetime value, and uncompromising compliance with health, safety, environmental
and industry standards are common denominators for all components, products,
systems and services in the Siemens LNG portfolio. Moreover, through its global manufacturing
and service network, Siemens ensures maximum customer proximity
and local content. Combining our competence and strengths with yours, we can
together push the limits of LNG plant productivity even further, to meet the most
rigorous contractual commitments of LNG production and delivery.
Statoil’s Melkøya Island LNG plant near Hammerfest, Norway.
The world’s first all-electric LNG plant, its main refrigerant compressors
are powered by two massive Siemens 65-megawatt
variable-speed drive systems (VSDS). Siemens also delivered the
compression solutions for methane mix and CO2 re-injection.
The unique advantages of electric LNG
While today’s vast majority of refrigeration compressors in LNG liquefaction
plants are driven by gas turbines, E-LNG schemes stand out as an
economically and ecologically superior approach — despite a higher
initial investment for a larger thermal power plant. With variable-speed
electric motors available for all relevant refrigerant compressors, the
concept of electrical liquefaction of natural gas (E-LNG) can be applied
equally well to all recognized and proprietary LNG liquefaction cycles,
offering a host of benefits. The E-LNG concept has been made feasible
by Siemens’ distinctive technology position in large motors and drives,
which are available to match the top end of the refrigerant-compression
duties now demanded by the scale-up of LNG train capacities.
 more
A single source from power to compressionProcuring a comprehensive power-to-compression solution from a single
point of responsibility offers a host of benefits for end-customers
and EPCs alike. A single point of contact means a significant reduction
of interfaces, simplifying project management and communications.
Moreover, engineering time as well as erection and commissioning costs
are reduced through harmonized equipment and handling.
more
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