Method for optimizing the operation of a plurality of...

F - Mech Eng,Light,Heat,Weapons – 04 – D

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F04D 27/02 (2006.01)

Patent

CA 2463662

The invention relates to a method for optimizing the operation of several compressor units in a natural gas compression station. After a second or other compressor unit is started, the speeds of the running compressor units are set according to a fixed speed ratio in relation to characteristic data established for each compressor unit. Said fixed speed ratio is altered by adjusting the rate of flow to the same percentage via the speed of rotation until the preventive pump valves of the gas compressor station are closed, whereupon the operating points of the compressor units are guided, wherever possible, in the characteristic data thereof, to the maximum line of efficiency, the optimum set speed values are determined according to continuous operating characteristics of the gas compression station by alternative trimming or coordinated variation of the set speeds of the compressors, taking into account fuel consumption of the gas compression station. The stored fixed speed ratio is adjusted according to the optimum set speed values thus determined and stored.

L'invention concerne un procédé d'optimisation du fonctionnement de plusieurs compresseurs dans une station de compression de gaz naturel. Selon ledit procédé, après mise en marche d'un deuxième ou d'un compresseur ultérieur, les régimes des compresseurs en marche sont mis dans un rapport de régime fixe en fonction de données de champs caractéristiques enregistrées pour chaque compresseur, puis les points de fonctionnement des compresseurs sont amenés, dans la mesure du possible, à leur caractéristique de rendement maximale dans leurs champs caractéristiques. Ensuite, en fonctionnement continu de la station de compression de gaz naturel, des valeurs de régime de consigne optimales sont déterminées par redressement équilibré ou variation coordonnée des valeurs de régime de consigne des compresseurs, avec prise en compte de la consommation de la station de compression de gaz naturel. Sur la base de ces valeurs de régime de consigne optimales, le rapport de régime fixe est réglé et enregistré de façon correspondante.

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