Konferensartikel

Transient Simulation of the Power Block in a Parabolic Trough Power Plant

Heiko Schenk
German Aerospace Center (DLR), Institut of Solar Energy, Germany

Jürgen Dersch
German Aerospace Center (DLR), Institut of Solar Energy, Germany

Tobias Hirsch
German Aerospace Center (DLR), Institut of Solar Energy, Germany

Thomas Polklas
MAN Diesel & Turbo SE, Process Industry/Engineering Steam Turbines

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp15118605

Ingår i: Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Linköping Electronic Conference Proceedings 118:65, s. 605-614

Visa mer +

Publicerad: 2015-09-18

ISBN: 978-91-7685-955-1

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

In the field of concentrated solar power (CSP) plants, parabolic trough systems with thermal oil as heat transfer fluid represent the technically and economically most mature technology. Due to storage systems these plants produce electricity on demand. However, a considerable portion of the annually collected thermal energy is consumed for the start-up procedure. In fact, after shut-down periods thermal masses must be reheated and additionally further energy losses due to imperfect start-up procedures occur. The present work has been carried out within the TURIKON project. The main goal is to evaluate and to optimize the transient behavior, namely the start-up of parabolic trough plants with thermal oil. For this purpose, a dynamic model was developed. An internal DLR solar library was used for the modelling of the solar field while the power block is modelled with the publically available ThermoPower library where some components had to be adapted for the needs of CSP plants. In the present publication first results are shown in order to demonstrate the capabilities of the plant model. The dynamic behavior of the power plant during normal operating mode and during a warm and a hot start-up procedure is evaluated and the warm start-up procedure energetically optimized. Keywords:

Nyckelord

transient power block simulation; parabolic trough; concentrated solar power

Referenser

Aalborg CSP. Aaalborg CSP steam plant configuration, 2015/04/16, www.aalborgcsp.com.

Francesco Casella and Francesco Schiavo. Modelling and Simulation of Heat Exchangers in Modelica with Finite Element Methods, 3rd International Modelica Conference, pp. 343-352, 2003.

Francesco Casella and Francesco Pretolani. Fast Start-up of a Combined-Cycle Power Plant - a Simulation Study with Modelica.pdf, 5th International Modelica Conference, pp. 7, 2006.

Francesco Casella. ThermoPower - Open library for thermal power plant simulation, 2015/04/17, http://thermopower.sourceforge.net/.

Tobias Hirsch. Fortschritt-Berichte Energietechnik, Reihe 6, No. 535, VDI Verlag, Dynamische Systemsimulation und Auslegung des Abscheidesystems für die solare Direktverdampfung in Parabolrinnenkollektoren, 2005, ISBN: 3-18-353506-8.

Tobias Hirsch, Markus Eck, Wolf-Dieter Steinmann. Simulation of transient two-phase flow in parabolic trough collectors using Modelica, 4th International Modelica Conference, Vol. 1, pp. 403-412, 2005.

Tobias Hirsch and Markus Eck. Simulation of the Start-Up Procedure of a Parabolic Trough Collector Field with Direct Solar Steam Generation, 5th International Modelica Conference, pp. 135-143, 2006.

Tobias Hirsch, Heiko Schenk, Norbert Schmidt, Richard Meyer. Dynamics of Oil-based parabolic Trough Plants - Impact of transient Behaviour on Energy Yields, 16th Solar PACES Conference, pp. 8, 2010.

Tobias Hirsch, Jan Fabian Feldhoff, Heiko Schenk. Start-Up Modeling for Annual CSP Yield Calculations, Journal of Solar Energy Engineering, 134 (3), pp. 031004-1..9, 2012, DOI: 10.1115/1.4006268.

Protermo Solar. Protermo Solar - Asociación Española de la Industria Solar Termoeléctrica, 2015/04/16, http://www.protermosolar.com.

Citeringar i Crossref