Stability Study and Modelling of a Pilot Controlled Regulator

El Golli Rami, Bezian Jean-Jacques, Grenouilleau Pascal, Menu François

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DOI: 10.4236/msa.2011.27116                

Abstract

With the increase of gas consumption and the expansion of the associated distribution network, Gaz de France set up a research program to develop a methodology and a library of models to study the stability of any type of pressure regulator. The pressure level is controlled by pressure regulating stations. The objective of this study is to point out the working conditions that lead to instabilities. Some experiments and numerical simulations have been carried out to identify the relative influence of several parameters on the amplitude of oscillations. It turned out from measurements and simulations that the amplitudes of the downstream pressure are especially sensitive to the upstream pressure and to the size of the downstream volume.

Keywords

Regulator, Stability, Regulation, Simulation, Experimental Design, Pumping

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	B. Delenne, L. Mode and M. Blaudez, “Modelling and Si-mulation of a Gas Pressure Regulator,” European Simulation Symposium, Erlangen, Germany, 26-28 October 1999.
[2]	B. Delenne and L. Mode, “Modelling and Simulation of Pressure Oscillations in a Gas Pressure Regulator,” Proceedings of American Society of Mechanical Engineers, Vol. 7, Orlando, 2000.
[3]	Association Technique de l’Industrie et du Gaz en France, Manuel pour le transport et la distribution du gaz, titre V “Détente et Regulation du Gaz” 1990. ISBN 2-8655-044-7
[4]	K. J. Adou, “Etude du Fonctionnement Dynamique des Régulateurs-Detendeurs Industriels de Gaz,” Ph.D. Thesis, Université Paris VI, Paris, 1989.
[5]	F. Favret, M. Jemmali, J. P. Cornil, F. Deneuve and J. P. Guiraud, “Stability of Distribution Network Governors —R&D Forum Osaka Gas,” 1990.
[6]	J. Goupy, “Plans D'expériences Pour Surface de Réponse,” Dunod, Paris, 2000.
[7]	J. Goupy, “La Méthode des Plans d'expériences: Optimisation du Choix des Essais et de L’interprétation des Résultats,” Dunod, Paris, 1988.
[8]	H. W. Earney, “Causes and Cures of Regulator Instatbility,” Fisher controls international, Inc, Marshalltown, 1996.
[9]	C. Carmichael, “Gas Regulators Work by Equalizing Opposing Forces,” Pipe Line & Gas Industry, 1996, pp 29-33.
[10]	J. P. Schlienger and E. Bordenave, “Ecoulement Instationnaires de Gaz en Conduite,” 11 ème Congrès International du Gaz à Nantes, 1994.
[11]	H. Schlichting, “Boundary Layer Theory,” McGraw Hill Book Company, Auckland, 1979.
[12]	Idel'cik, “Spravotchnik po Guidravlitcheskim Soprotivleniam,” Memento des Pertes de charges, Gosenergoizdat, Moscow, 1960.
[13]	J. Taine and J. P. Petit, “Transfert de Chaleur; Thermique; Ecoulement de Fluide,” Dunod, Paris, 1989.
[14]	D. Y. Peng and D. B. Robinson, “A New Two-Constant Equation of State,” Industrial & Engineering Chemistry Fundamentals, Vol. 15, No. 1, 1976, pp. 59-64. doi:10.1021/i160057a011
[15]	H. W. Liepmann and A. Roshko, “Elements of Gas Dynamics,” John Wiley and Sons Inc., Hoboken, 1962.
[16]	A. Jeandel, F. Favret, L. Lapenu and E. Lariviere, “ALLAN. Simulat Ion, a General Tool for Model Description and Simulation,” International Conference of the International Building Performance Simulation Association, Adlaide, 16-18 August 1993.
[17]	M. Nakhlé, “NEPTUNIX an Efficient tool for Large Size Systems Simulations,” In 2nd Internationnal Conference on System Simulation, Lieges, Belgium, 3 December 1991.