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Estimation of the Operating Characteristics of the Adjustable Speed Gas Turbine Power Generation System During Partial Load Operation

[+] Author Affiliations
Naoyuki Nagafuchi, Nariyoshi Kobayashi

Hitachi, Ltd., Hitachinaka, Ibaraki, Japan

Motoaki Utamura

Hitachi, Ltd., Hitachi, Ibaraki, Japan

Paper No. 2000-GT-0173, pp. V002T04A024; 7 pages
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7855-2
  • Copyright © 2000 by ASME


This paper proposes an application of the simple cycle adjustable speed gas turbine power generation system for use as an independent power producer combined with a heavy duty gas turbine (output power 25MW, turbine inlet temperature 1400K class) having adjustable speed generators. Comparison results for a method to improve the thermal efficiency of this system using low NOx combustors are obtained.

The results of a performance study of the static characteristics for the system using forced IGV (Inlet Guide Vane) opening control during partial load adjustable speed operation, show an effect on thermal efficiency improvement. Comparison of the dynamic characteristics for the system using existing controllers and the system using the proposed controllers shows, the latter is able to restrain fluctuation of the fuel to air mass ratio during a transient changing the target rotational speed, under restricted operating conditions.

Copyright © 2000 by ASME



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