FAULT DETECTION FOR TRANSPORT PIPELINES BASED ON KULLBACK INFORMATION

Leak detection and location of fluid transport pipelines often requires flow measurements which may be unavailable in practice.In this paper a new leak detection method based on kullback information is proposed,in which leak is detected by analyzing the time sequence of the pressure gradient at the inlet and out-let of the pipeline.It requires only 4 pressure measurements,namely,2 at each end of pipeline.Furthermore,computational expenditure is small,and can be implemented easily.Its effectiveness and practicality have been shown by test results on a 10mm×120m experimental water pipeline.