High-gain observers for leak location in subterranean pipelines of liquefied petroleum gas
Résumé
This paper describes a scheme based on high-gain observers to detect and locate leaks in subterranean pipelines of liquefied petroleum gas (LPG). In fact, sub-observers connected in cascade are used to generate residuals that allow to detect when a leak occurs and, above all, to isolate the region of the pipeline where the leak is located. Once the region is identified, a dedicated observer is employed to more precisely estimate the leak position as well as its coefficient. The approach is validated with data from a real industrial LPG pipeline.