Schneider Electric Industries Sas

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Safran Electrical & Power

Diego Alberto

Vincent Heiries

Bartosz Boguslawski

Philippe Brun

Raphaël Toufflet

Pierre Perichon

Jean-Pierre Meley

Venanzio Ferraro

Marco Ranieri

Emmanuel Bussy

Nicolas Rossi

Jean-Pierre Gauthier

Maxime Durand

Massimo Secci

Jérôme Genoulaz

Anthony Papillon

Xavier Godechot

Raimund Summer

Christophe Trebosc

Diana El Khoury

A method for classifying a partial discharge in an insulator of an electrical conductor of a medium voltage or high voltage electrical device, the method allowing a partial discharge to be classified from between at least one first class and a second class distinct from the first class. The method includes: obtaining a set of samples each corresponding to at least one partial discharge, determining a classification model by automatic learning based on at least one statistical quantity of the samples of the set, acquiring a new sample corresponding to at least one partial discharge, and determining the class of the partial discharge associated with the new sample acquired using the classification model.

Method for classifying a partial discharge in an electrical conductor of a medium voltage electrical device

Monitoring the condition of an electrical apparatus based on an estimated temperature of a conductor in the electrical apparatus, including receiving a measured temperature value from a first thermal sensor disposed in the electrical apparatus and configured to sense temperature at a location separated from the conductor by an insulator, generating an estimated conductor temperature value based on applying a non-linear model to the measured temperature value, and monitoring the condition of the electrical apparatus based on the estimated conductor temperature. The non-linear model may include a Hammerstein Wiener model.

Electrical apparatus thermal monitoring

A method for determining an operational status of a switching device for switching an electrical unit including a first circuit and a second circuit, each circuit respectively including: a vacuum breaker including a fixed electrode and a mobile electrode; and a control device connected to the mobile electrode via an elastic device. The method including: for each of the first and second circuits, determining a transition instant at which the mobile electrode comes into contact with the fixed electrode; determining a difference between the transition instant of the first vacuum breaker and the transition instant of the second vacuum breaker; determining that the operational status is a first status known as 'nominal synchronization' if the difference is less than a threshold; and determining that the operational status is a second status known as “abnormal synchronization” if the difference is greater than the threshold.

Switching device for a medium voltage electrical circuit

A method for detecting an abnormal event in an insulator of an electrical conductor of a medium-voltage or high-voltage electrical device. The method includes: acquiring a set of successive samples of a vibration signal associated with the electrical conductor; determining a modelled value of a following sample based on the acquired set of samples and on a prediction model, the prediction model being obtained through machine learning of the vibration signal based on a set of samples acquired in reference conditions in which the electrical conductor is free from any abnormal event; acquiring the following sample of the vibration signal; calculating a difference between the value of the acquired sample and the modelled value; and if the calculated difference is greater than a predetermined threshold, detecting an abnormal event in the electrical conductor.

Method for detecting an abnormal event in an electrical conductor of a medium voltage electrical device

A method for testing capacitive current switching of a circuit breaker, including:

Method for testing capacitive current switching of a circuit breaker

Method for monitoring for partial discharges in an electrical installation comprising at least one electrical cubicle, the electrical cubicle comprising at least one item of medium-voltage or high-voltage electrical equipment.

System for monitoring for partial discharges in an item of electrical equipment via gaseous emissions

Method for detecting a state of a switching unit, the switching unit comprising an element that is movable between a first position and a second position.

Determining a state of a switching unit

A method for detecting and locating a fault affecting an electrical cable includes the steps of (a) placing a first sensor and a second sensor along the cable, the second sensor being an acoustic sensor; (b) detecting the occurrence of the fault with the first sensor at a first time, and with the second sensor at a second time; (c) taking into account a propagation speed of an acoustic wave generated by the fault; (d) estimating a position of the fault depending on the first time and on the second time, on the basis of the propagation speed resulting from step (c); (e) determining a reference propagation speed depending on the position resulting from step (d) of the fault, and comparing said reference propagation speed with the propagation speed taken into account in step (c); and, (f) depending on the comparison, validating the position resulting from step (d) or reiterating steps (c) to (f) while adjusting, in step (c), the propagation speed taken into account.

Method for detecting a fault occurring in a cable

A method of detecting an electric arc in an electrical system from a signal originating from at least one sensor detecting acoustic waves in the system, including: a) calculating by means of a processing device, over a sliding window of signal samples, at least one statistical parameter selected from the skewness and the kurtosis of the signal; b) detecting a possible occurrence of an event by taking into account said at least one statistical parameter; and c) performing a frequency analysis of the signal enabling to identify an electric arc when an event is detected at step b).

Method of detecting an electric arc by analysis of its acoustic signature

The invention relates to a device for detecting an electric arc based on an analog output signal () of at least one acoustic wave sensor (), this device including: an analog-to-digital converter () capable of sampling and digitizing the output signal () of the sensor (); a digital processing circuit () capable of implementing a frequency domain analysis of the digital output signal () of the converter () enabling to detect the possible presence of an arc based on its acoustic signature; and an analog circuit () for detecting the exceeding of a power threshold by the output signal () of the sensor (), wherein the digital processing circuit () is configured to implement the frequency domain analysis only on detection of the exceeding of a threshold by the analog circuit ().

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Corenc, France

Diego Alberto