Abstract: An anti-rotation device for suspending a load under a machine for lifting and moving this load includes a sling system provided with a fastener to the machine. It further includes a spreader beam, having a main longitudinal axis and a yaw rotation vertical transverse axis, including: a system for upper fastening to the sling system so it can be suspended in a substantially horizontal arrangement of its main longitudinal axis and free about its vertical transverse axis under the machine using the sling system; a system for lower fastening to the load, allowing driving of the load by the spreader beam about its vertical transverse axis. The spreader beam includes a propulsion unig disposed in such a way as to engage its rotation, selectively in one direction or in the other, about its vertical transverse axis when it is suspended from the machine via the sling system.

Abstract: A facility for monitoring a portion of a high-voltage electrical power transmission network includes: a plurality of local electrical stations for connecting high-voltage lines, each local electrical station implementing a first communication protocol dedicated to an internal communication between electrical devices; at least one remote monitoring site connected to each of the local electrical stations by a remote control network implementing a second communication protocol dedicated to the remote control. One of the local electrical stations, as a main electrical station, includes an automated mechanism for additional monitoring configured to receive, process, and transmit data conforming to the first communication protocol. The main electrical station is connected to each of the other local electrical stations by an additional monitoring network, distinct from the remote control network, implementing the first communication protocol.

Abstract: This system (40) for dynamically determining maximum electric current carrying capacities comprises: means (44) for storing a model (54) of a network portion (10), a thermal equilibrium relationship (56), operating limit temperatures and conduction parameters; and a receiver (46) for wind speed values measured by wind measurement stations (24, 26, 28, 30). It further comprises a computer (48) programmed (62, 64, 66, 68) to: apply a model (60) of wind propagation from at least one selected station towards singular points of the model (54) of the network portion, in order to estimate a wind speed value at each singular point; and calculate at least one maximum capacity value at each singular point on the basis of the thermal equilibrium relationship (56), of each operating limit temperature, of each conduction parameter and of weather parameters (58), taking into account said wind speed value estimated at each singular point in the thermal equilibrium relationship (56).

Abstract: This electric current transmission cable includes a non-anodized bare conductor based on aluminum or an aluminum alloy having a hydrophilic external specific surface intended to be in contact with the atmospheric environment, and an inside volume intended to conduct an electric current. The external specific surface of the bare conductor has a first roughness parameter, defined as the arithmetic mean deviation, measurable by profilometry, of peaks and valleys in comparison to a predetermined average profile over a reference length or surface, equal to or greater than 1.9 ?m. In addition, the inside volume of the bare conductor has oxygen doping of its aluminum-based or aluminum alloy-based components at a ratio equal to or greater than 20%, to a depth of at least 300 nm with respect to the external specific surface.

Abstract: A method for monitoring a high-voltage electric-current transmission line includes: determining (100) the ampacity (A) of the high-voltage line from a distribution temperature, conduction parameters and meteorological parameters; measuring (202) the current strength effectively transmitted by the high-voltage line using at least one sensor; and monitoring (204), by a monitoring device connected to the sensor, an excess of ampacity (A) by the current strength measured. The determining (100) of the ampacity (A) includes: selecting (108, 110, 112, 114, 116) a value of this ampacity (A) by optimizing a probability of exceeding the distribution temperature, with this probability defined based on a joint probability model (P) of operating current strength and temperature that depends on meteorological parameters; and recording (118) the selected ampacity value in a storage unit of the monitoring device.

Abstract: This system (40) for dynamically determining maximum electric current carrying capacities comprises: means (44) for storing a model (54) of a network portion (10), a thermal equilibrium relationship (56), operating limit temperatures and conduction parameters; and a receiver (46) for wind speed values measured by wind measurement stations (24, 26, 28, 30). It further comprises a computer (48) programmed (62, 64, 66, 68) to: apply a model (60) of wind propagation from at least one selected station towards singular points of the model (54) of the network portion, in order to estimate a wind speed value at each singular point; and calculate at least one maximum capacity value at each singular point on the basis of the thermal equilibrium relationship (56), of each operating limit temperature, of each conduction parameter and of weather parameters (58), taking into account said wind speed value estimated at each singular point in the thermal equilibrium relationship (56).

Abstract: A facility for monitoring a portion of a high-voltage electrical power transmission network includes: a plurality of local electrical stations for connecting high-voltage lines, each local electrical station implementing a first communication protocol dedicated to an internal communication between electrical devices; at least one remote monitoring site connected to each of the local electrical stations by a remote control network implementing a second communication protocol dedicated to the remote control. One of the local electrical stations, as a main electrical station, includes an automated mechanism for additional monitoring configured to receive, process, and transmit data conforming to the first communication protocol. The main electrical station is connected to each of the other local electrical stations by an additional monitoring network, distinct from the remote control network, implementing the first communication protocol.

Abstract: A method for locating a defect in an electric link includes measuring at least one part of components of an electromagnetic field in a vicinity of an estimated location of the defect at plural places along the link; deducing, via a processor, from the measuring an estimation of variation of at least the part of the components of the electromagnetic field along the electric link in a vicinity of the estimated location of the defect; and estimating, via the processor, a new location of the defect as a function of the estimated variation of at least the part of the components of the electromagnetic field.

Abstract: A method for monitoring a high-voltage electric-current transmission line includes: determining (100) the ampacity (A) of the high-voltage line from a distribution temperature, conduction parameters and meteorological parameters; measuring (202) the current strength effectively transmitted by the high-voltage line using at least one sensor; and monitoring (204), by a monitoring device connected to the sensor, an excess of ampacity (A) by the current strength measured. The determining (100) of the ampacity (A) includes: selecting (108, 110, 112, 114, 116) a value of this ampacity (A) by optimizing a probability of exceeding the distribution temperature, with this probability defined based on a joint probability model (P) of operating current strength and temperature that depends on meteorological parameters; and recording (118) the selected ampacity value in a storage unit of the monitoring device.