Juergen Bimbaum
Siemens AG, Energy Sector, Erlangen, Germany
Markus Joecker
Siemens AG, Energy Sector, Finspång, Sweden
Kilian Link
Siemens AG, Energy Sector, Erlangen, Germany
Robert Pitz-Paal
German Aerospace Center, Institute of Technical Thermodynamics, Cologne, Germany
Franziska Toni
Siemens AG, Energy Sector, Erlangen, Germany
Gerta Zimmer
Siemens AG, Energy Sector, Muelheim, Germany
Ladda ner artikel
http://dx.doi.org/10.3384/ecp09430055Ingår i: Proceedings of the 7th International Modelica Conference; Como; Italy; 20-22 September 2009
Linköping Electronic Conference Proceedings 43:82, s. 702-707
Publicerad: 2009-12-29
ISBN: 978-91-7393-513-5
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
Steam turbine technology is one of the leading technologies used in electricity production since more than one hundred years. In recent time requirements for steam turbines have been changing slowly. Steam turbines are not longer used in power plants with high operation times and a high full load share only; but are also implemented in combined cycle power plants or solar thermal power plants. This type of plants requires good dynamic behavior of the steam turbine due to fast and frequent start ups and daily cycling.
To optimize the performance of this kind of power plants and their components it is necessary to simulate and analyze their dynamic behavior. Therefore; a general model approach for steam turbines within Modelica has been developed. This model approach is based on a general model; which can be adjusted to the necessary model depth as described in this paper.
Steam turbines in a solar thermal power plant with direct steam generation must fulfill special requirements regarding their dynamic behavior. Hence; this model is applied as an example to explain the behavior of an industrial steam turbine used in such plants. Furthermore; this paper shows first results of simulations with turbine models. To validate the model; the results are compared with results from the Siemens internal steady state calculation tool. Since results stay within the estimated accuracy; the model approach can be used for further calculations.
The dynamic behavior of the turbine is analyzed by using typical solar irradiance disturbances. This analysis shows that no critical operation points occur within the turbine.
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