Patent ID: 9395262
Filing Date: 2016-07-19
CPC Classification: G01M

Claim Text:
1. A computer implemented method for detecting leaks in a pipeline network that are not detectable by a supervisory control and data acquisition (SCADA) system over an extended period of time, the method comprising: identifying a subsystem in the pipeline network, the subsystem comprising a plurality of stations that are topologically connected, the plurality of stations comprising a first station; accessing historical temporal sensor measurements of the stations in the subsystem, the historical temporal sensor measurements comprising sensor measurements captured at corresponding timestamps over a predetermined time-span; selecting, from the historical temporal sensor measurements, a first subset of temporal sensor measurements corresponding to timestamps without leak events; determining a benchmark value for the sensor measurements for the first station based on the first subset of temporal sensor measurements; selecting, from the historical temporal sensor measurements, a second subset of temporal sensor measurements corresponding to timestamps with leak events; detecting a leak in the subsystem by: triggering an indication of a leak detection in response to the first cumulative sum of differences being larger than the first predetermined threshold or smaller than the second predetermined threshold.