27-01-2012, 12:15 PM
Siemens AG, Power Generation, Germany
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INTRODUCTION
The world’s power generation markets have been deregulated to a large extent over the past few
years, and this process is still ongoing. In order to remain competitive, power plants need to have
features that match with the requirements of the changing market. With the focus on cost
efficient production of electricity, the most important requirements of today are low overall lifecycle
costs, high reliability, availability and operating flexibility.
TWO CYLINDER DESIGNS UP TO 700MW
For the power range from 100MW to 700 MW, Siemens provides two optimized two-cylinder
steam turbine designs with single and double flow low pressure sections. (Fig. 1). For
applications with lower power output or high back pressures, the HE product line with single
flow LP is used
MODULAR CONCEPT TO COVER A BROAD POWER RANGE
For given main steam conditions and condenser pressure, power output is directly linked to the
mass and volume flow passing the steam turbine. In order to achieve optimum velocities – and
hence low losses – within different sections of the machine, a series of modules of different sizes
are required for each element of the
turbine.
Turbine Modules
For the K-Turbine, the full
application range from 100-700 MW
(for 60Hz) is covered with four
module sizes (Fig. 2). All modules
are based on the same design
philosophy in order to apply similar
proven design features to all turbines.
