Pedro A. Morgado
Civil Engineering Department and CEHIDRO, Instituto Superior Tåcnico, Technical University of Lisbon, Portugal
Helena M. Ramos
Civil Engineering Department and CEHIDRO, Instituto Superior Tåcnico, Technical University of Lisbon, Portugal
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http://dx.doi.org/10.3384/ecp110571440Published in: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden
Linköping Electronic Conference Proceedings 57:9, p. 1440-1447
Published: 2011-11-03
ISBN: 978-91-7393-070-3
ISSN: 1650-3686 (print), 1650-3740 (online)
This work focuses on the hydraulic aspects of a Pump as Turbine (PAT) when subjected to different working conditions; including accidental situations. This will provide useful information for the choice of the most adequate solution and will ensure a correct design and safe operation of the installed equipments. This work is supported by experimental data obtained in a series of tests performed at the university’s laboratory and by calibrated computational modelling. The obtained data was used to perform a sensitivity analysis on the relation between discharge variation; runaway time and rotational speed and make inferences about the expected peak overpressure in an accidental situation. Based on the results; the hydropower system may be characterized by a relevant set of calculated parameters that are of extreme utility in the construction and calibration of a computational model capable of accurately predicting different scenarios and alternatives.
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[2] Morgado; P.; Ramos; H.; “Renewable Energy Production Integrated in Water Supply Systems: Dynamic Effects Analysis” in Seminario Iberoamericano sobre Planificación; Proyecto y Operación de Sistemas de Abastecimiento de Agua; Valência (Espanha); 24-27 de Novembro de 2009 (in Portuguese).
[3] Streeter; VL e Wylie; EB; Hydraulic Transients. New York; McGraw-Hill Book Co.; 1967.
[4] Ramos; H.; Simulation and Control of Hydraulic Transients in Small Hydro. Modelling and Analysis of Induced Effects by Turbogenerator Overspeed (in Portuguese). Ph. D. Dissertation in Civil Engineering. Portugal; Instituto Superior Técnico; 1995.
[5] Ramos; H.; Almeida A.B; Experimental and Computational Analysis of Hydraulic Transients Induced by Small Reaction Turbomachines (in Portuguese). APRH; LNEC. Lisboa; 2001.
[6] Ramos; H.; Unconventional Dynamic Effects in Pressurized Hydraulic System (in Portuguese). Support document for the subject Transients in Elevation and Hydroelectric Systems from the PhD in Hydraulics and Water Resources. IST; DECivil; 2004.
[7] Ramos; H. and Almeida; A. B.; Parametric Analysis of Waterhammer Effects in Small Hydropower Schemes. HY/1999/021354. ASCE - Journal of Hydraulic Engineering. Volume 128; 7; pp. 689-697; ISSN 0733-9429; 2002.
[8] Ramos; H; Almeida; A. B.; Dynamic orifice model on waterhammer analysis of high and medium heads of small hydropower schemes. Journal of Hydraulic Research; IAHR; Vol. 39 (4); pp. 429-436; ISSN-0022-1686; 2001.
[9] Morgado; P.; Ramos; H.; “Dynamic Effects Analysis in Hydropower Systems” (in Portuguese); 10º Congresso da Água (Portugal); 2010
[10] Ramos; H.; Support document for the subject Elevation and Hydroelectric Systems Subject of the Hydraulic and Water Resource Msc. IST; DECivil; 2003.
[11] Lencastre; A. – General Hydraulic (in Portuguese). Hidroprojecto; 1983.
