Superpowerful Combined Cycle Power Units
With One Gas Turbine
Author(s)
A. Zaryankin, A. Mager, A. Rogalev & I. Komarov
Abstract
This paper deals with different ways to increase the unit capacity of combined
cycle power plants (CCPP) with an in-line equipment layout using a single gas
turbine. The transition to a double flow gas turbine using a low-speed low
pressure compressor connected with a low-speed steam turbine is a revolutionary
way to solve the above problem. The double-shaft compressor is commonly
designed with two additional internal bearings and is offered as a solution. The
first stages of such a compressor (low pressure compressor (LPC)) connect with
the steam turbine, but the second high-pressure group of stages (high-pressure
compressor (HPC)) is driven by the gas turbine. So the gas turbine unites a
start-up at the base of the HPC. The low pressure compressor and steam turbine
can be designed with low revolution speed, which considerably increases air
flow through the compressor and leads to an increase in the combined cycle
power plant’s power capacity.
Keywords: combined cycle power plant (CCPP), gas turbine unit (GTU), air
compressor with steam turbine drive, double-flow compressor, additional steam
boiler.
Keywords
combined cycle power plant (CCPP), gas turbine unit (GTU), air
compressor with steam turbine drive, double-flow compressor, additional steam
boiler.
Related Book
Other papers in this volume
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