Jørgen Salvesen

Simplified observer design and simulation for leak detection in fluid pipelines

A pipeline simulator and a procedure for leak detection and isolation are presented. The leak detection system uses a linearized system description in the design of observers. The design is based on extracting observable subsystems from the pipeline description which is done through the use of a numerical algorithm. The observer design is improved by finding the structure of the subsystems, providing an easier way to update the operating point and friction parameters of the system. Leak detection and isolation is tested against the pipeline simulator and the need for a correct operating point in the observers is confirmed.