Abstract
In this paper, we suggest a new algorithm for leak detection and localisation on gas pipeline. We decompose the pipeline in different sections of length L. We put two pressure sensors at the beginning of the studied section at location x = iL and two other pressure sensors at the end located at x = (i + 1)L where i = 0, horizontal ellipsis , N - 1 is the number of the studied section of pipeline. We also use two mass flow rate sensors at the beginning and end of each section. Our algorithm uses the gradient of squared pressure to locate the leak. We show that our new algorithm allows to locate the leak with 1.2% error in distance. We tested our algorithm on a pipeline of length 15 km and the average error was around 180 m. Therefore, the location error is around 180/15,000 = 1.2%.