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A master's thesis from Aalborg University
Book cover


Dynamic Simulation of Compressor Control Systems

Translated title

Dynamic Simulation of Compressor Control Systems

Term

10. term

Publication year

2008

Submitted on

Pages

85

Abstract

Centrifugal compressors used for gas compression are complex fluid-flow machines with a limited operational range and control of the compressors is crucial for safe and efficient operation. A model has been created for simulation of a separation and gas compression system by using HYSYS DynamicsTM. Based on the theory for centrifugal compressors and control theory a control strategy has been applied to the model based on the available equipment. The model has been used to investigate how the gas compression system responds to changes in the compressor inlet flows and conditions. The simulations performed have resulted in suggestions to modifications to the system.

Centrifugal kompressorer er komplekse maskiner, der ofte benyttes til naturgas kompression. På grund af et begrænset operationsinterval er det essentielt at regulere kompressorerne for at sikre en pålidelig og effektiv drift. En model for et separations- og gaskompressionssystem er opbygget i proces simulations-programmet HYSYS DynamicsTM. Et kompressor reguleringssystem baseret på teorien for centrifugal kompressorer og generel reguleringsteori er implementeret i modellen. Ved brug af modellen er det undersøgt hvorledes kompressionssystemet reagerer på ændringer i flow og sammensætning af gassen. På baggrund af simuleringerne er der givet forslag til modifikationer af systemet.