Suez Groupe

Suez International

Francis Campan

Guillaume Cussonneau

Pierre-Antoine Jarrige

Abel Dembele

Guillaume Gancel

A method for the detection of anomalies in a networked water distribution system is provided. It improves detection methods based on an iterative modification of control variables of the network, by determining a reduced set of entities of the water distribution network on which control variables should be iteratively modifier. The invention increases the computing costs, and the reliability of such methods of detecting anomalies in a water distribution system.

Combined method for detecting anomalies in a water distribution system

A method and a system for detecting anomalies in a water distribution system comprises a network of nodes, and is equipped with sensors of at least water velocity at a subset of the nodes. The water distribution system is modeled by a hydraulic model. The method comprises parametrizing the hydraulic model with initial values of a set of control variables, using the sensors to obtain values of state variables of the network at the nodes, using the hydraulic model to calculate predicted values of state variables, recursively calculating the values of control variables which, applied to the hydraulic model, permit to obtain the predicted values of state variables the closest to the observed values, and classifying nodes of the network based on the values of control variables.

Method for detecting anomalies in a water distribution system

Disclosed is a device for measuring at least one physical, chemical or biological parameter of a fluid, flowing in a pipe belonging to a fluid-distribution network, the device being installed in a cut on the pipe at the fluid delivery point, the pipe thus including a first section and a second section, the device including at least one sensor provided with a measurement end. The device also includes: a body including an opening forming a flow line, and at least one insertion recess capable of receiving the measurement end of the at least one sensor, the insertion recess opening into the flow line; an attachment unit arranged to connect a first end of the flow line with an end of the first section and a second end of the flow line with an end of the second section, to allow the fluid to flow through the flow line.

Smart measurement system at the delivery point of a fluid

Disclosed is a method for detecting anomalies in a distribution network equipped with sensors. The steps are:

Method for detecting anomalies in a distribution network

A hydraulic model of the network is used that describes the structural data and the laws governing the distributed flows. The model is fed with operational data relative to primary input parameters and, using the model, theoretical values are obtained for primary output parameters. The theoretical values are compared with measured values. In case of a significant deviation, the corresponding primary output parameter becomes a secondary input parameter in an inverse model including new secondary output parameters, which are added relative to the direct model and which correspond to primary input parameters. The secondary output parameters are, by priority, those to which the primary output parameter exhibiting the abnormal value is particularly sensitive. If necessary, the method is implemented iteratively by progressively restricting the number of the secondary output parameters.

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Antony, France

Francis Campan