On Calculation and Optimization of Energy Systems PUBLIC ACCESS

[+] Author Affiliations
Peter Ortmann, George Gyarmathy

Swiss Federal Institute of Technology (ETH), Zurich, Switzerland

Paper No. 96-GT-394, pp. V004T10A024; 8 pages
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7875-0
  • Copyright © 1996 by ASME


Most modern plants offer a variety of control methods which can be used one-by-one or in combination. For instance, in case of CC plants, control methods can comprise e. g. fuel control, adjustable compressor guide vanes and various feed preheat options. For the actual part-load operation the knowledge of optimum combinations is of great interest.

A computer code based on standard mathematical optimization tools for large non-linear systems of equations has been developed and tested on various gas-turbine and CC power plant configurations. The code can be employed to plants of almost any level of complexity and to any particular plant layout.

The range of control action is always limited by technological constraints imposed by mechanical, thermal, chemical or other limits and prescribed by the equipment manufacturer. The optimization code has been devised to respect an arbitrary number of such conditions as e. g. flue gas temperature, steam turbine moisture, gas turbine exit temperature and the like.

Such limits and operating instructions concerning the observance of certain parameter ranges (e. g. limits prescribed for sake of life-cycle extension) can be introduced into the optimization procedure.

Copyright © 1996 by ASME
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