Schneider Electric Industries Sas

Michel Clemence

Pascal Houbre

Erick Contini

Olivier Coutelou

Alain Moreux

Philippe Deschamps

Sylvain Clot

Jean-Luc Bertocchi

Xiaodong Shi

Alexandre Soleillant

Stephane Bediou

Frédéric Waterlot

Christian Lassalle

Stéphane Bediou

The invention relates to a device for measuring an electrical quantity of one phase of an AC electric current in an overhead electrical network, comprising: a sensor designed to be attached to an electric line of the network, the sensor including: an electrically conductive plate; an electrical conductor, designed to electrically connect the plate to the line, in order to circulate a first current from the line through the conductor; a processing unit, designed to determine the electrical quantity from value values of the first electric current and a value of a capacitance between the plate and ground. The device also comprises a generator, electrically connected to the conductor and designed to inject a second current through the conductor, the second current having a frequency other than the frequency of the first current, the processing unit also being designed to calculate the capacitance between the plate and ground as a function of the second current.

Device for measuring an electrical quantity of one phase of an AC electric current of an overhead electrical network

A detector for detecting at least one electric quantity in an electric conductor, and an overhead network for distributing electricity. The detector includes a frame on which a mechanism is fixed, the mechanism including a magnetic toroid, divided into two branches rotatable around an axis defined by the frame, between a separated position and a position closed around the electric conductor, a current sensor, divided into two branches rotatable around an axis defined by the frame, between a separated position and a position closed around the electric conductor, the current sensor performing an AC current measurement, a force transmitting element transmitting a rotational force to the magnetic toroid and the current sensor, the element being provided with at least one portion to receive the conductor by bearing, and a first clamp including two clamp arms, and a second clamp including two clamp arms.

Detector for overhead network and overhead network comprising such a detector

A current sensor including a measurement torus, arranged in a casing positioned around an electric conductor able to transmit an electric current, and a device for detecting a voltage in the electric conductor. The detection device is configured for surrounding the electric conductor when the current sensor is installed.

Current sensor and electric network comprising such a current sensor

A system for detecting an electrical fault in an electrical installation including several electrical conductors, the system including at least two measurement modules, each measurement module including first radioelectric communication device, a sensor for measuring each electrical magnitude associated with a corresponding electrical conductor and a first clock defined by a first initial instant and a first clock frequency, each measured value being suitable for being associated with a first instant of measurement, determined with respect to the first initial instant and as a function of the first frequency, an acquisition unit, including second radioelectric means adapted for communicating with the first radioelectric communication device.

System for detecting an electrical fault and associated method

A method detects at least one photovoltaic electricity production apparatus in an electrical distribution network including at least one electrical installation and at least one current sensor, each installation further including at least one electrical apparatus. The method includes acquisition, by a current sensor, of a plurality of active power profiles of a corresponding installation, computation, for at least one pair of active power profiles of a differential profile equal to the difference between the power profiles of the pair, computation of a coefficient of correlation between the differential profile or profiles computed and a reference profile, and detection of the presence of a photovoltaic electricity production apparatus among the electrical apparatus or apparatuses of the installation.

Method and device for detecting a photovoltaic electricity production apparatus in an electrical distribution network, and associated computer program product

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Chambery, France

Michel Clemence