320 results about "High voltage power lines" patented technology

A power line communication device is provided that in one embodiment includes a parameter sensor device configured to measure a parameter of a power line, a modem configured to transmit parameter data over a power line, and a controller communicatively coupled to the current sensor device and modem. The parameter sensor device may include a current sensor device that includes a Rogowski coil. For measuring the current or other parameter of a higher voltage power line conductor, the parameter sensor device may be configured to provide data to the controller via a non-conductive communication link, such as via a wireless, fiber optic, or radio frequency transponder link. In addition, the parameter sensor device may include an isolated power source and receive power via a fiber optic conductor or inductively from the power line.

The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a single power line wire. An exemplary device includes a high frequency inductive coupling toroid for data signals, a second (50-60 Hz) inductive coupling toroid for providing power, signal conditioning electronics for the receive and transmit signal, a fiber optics interface for electrical isolation purposes, and a weather-proof enclosure. In a preferred embodiment, the toroids are hinged for ease of installation on a power line. A pair of such couplings on either side of a fiber-optic isolator can be used to bridge transformers.

A method and apparatus for handling and / or stringing energized conductor for a high voltage power line conductor for a high voltage power line is provided. The method includes bringing components and workers to the same electrical potential and transferring power from one contractor to another. Associated apparatus is also described.

The present invention discloses a spinning electricity replacing method and a double yoke-plate device of high-tension transmission line strain insulator. A wing-shaped card and an insulation drawplate and other special tools on the end are used to firstly loose the stain insulator; a pulley block and a lead screw on the sides of a cross arm and a lead wire are used to complete break away the twoends of the strain insulator; finally the pulley block arranged on a ground bracket is used to rotate a porcelain insulator from a horizontal state to a vertical state, thus changing the complicated operation to the simple operation, greatly shortening the equipotential operation time and ensuring the safe operation of the line. The double yoke-plate device of high-tension transmission line strain insulator includes two wing-shaped cards and two lead screws as well as two insulation drawplates; one end of the two insulation drawplates is respectively connected with the two wings of the two wings of the wing-shaped card and the other end is respectively connected with the lead screw; the other end of the two lead screws is respectively connected with the two wings of the other wing-shaped card. The present invention has the advantages of simple structure, easy operation and low cost.

A power supply generated through a set of current transformers is disclosed. The current transformers may be removably attached to a primary power line such as a high voltage power line. The power supply may be used to power a device or charge a battery for a device that requires a low voltage input. The power supply may be used in underground vaults and pad mounted chambers that contain high voltage power lines. The power supply may generate a low voltage direct current out put that is not available in the vicinity of high voltage power lines in an underground vault or pad mounted chamber.

A current monitoring device (CMD) with a set of electromagnetic field sensors located within one or more grounded housings positioned within the combined electromagnetic fields generated by one or more electric power lines. The CMD includes electronics, typically located within the grounded housings, defining impedance networks that combine the measurements received from the field sensors to create output signal indicative of electric current values for the phase conductors. The housings can be conveniently attached and to transmission line towers, distribution line poles, and high voltage power line supports in transmission and distribution substations. The CMD controls response equipment, such as a circuit interrupter that responds to current disturbances detected by the CMD. The CMD may also include communication for sending the current values to a remote controller, such as a central control station, that implements a wide range of response equipment.

The high-voltage insulator for securing a high-voltage wire in an electrical plant or in an electric power line comprises an insulating body, the first end of which is used for mechanically connecting to a high voltage wire and / or to a fixing device, the second end being provided with a metal fixture which is fastened thereto and is used for attaching the insulator to a tower. In order to impart lighting protection properties to the insulator, it is also provided with a multi-electrode system consisting of m electrodes, which are mechanically coupled to the insulation body and are arranged between the ends thereof. The electrodes are disposed in such a way as to form an electric discharge between the adjacent electrodes, between the electrode adjacent to the first end of the insulation body and the high voltage wire or the fixture thereof and between the electrode adjacent to the second end of the insulation body and the metal fixture connected to the tower. The insulator is provided with means for compensating the reduction of the insulator creepage path caused by the multi-electrode system. The electric power line using the insulators of this type do not require lighting dischargers.