318 results about "High voltage power lines" patented technology

A multi-sensor system can be attached to a high voltage power line, draw power from the power line inductively, and convert the power to lower voltages and direct currents for operating cameras, sensors, a processor, and communications equipment that provide persistent intelligence, surveillance, and reconnaissance capabilities. The multi-sensor system can detect and track targets in detection regions and transmit such detection data and other data from the camera and sensors to a remote operator who can initiate response actions and send control instructions to the multi-sensor system from the remote location.

Within one pixel element 200, two display circuits corresponding to the analog display mode and the digital display mode are disposed such that they are adjacent to each other. One of these two display circuits can be selected through the circuit selection circuits 40 or 43. Since the high voltage power line 150 of the retaining circuit 110, which is used under the digital display mode, also performs as the signal selection line 88, it is possible to have the high density integration of the pixel element 200. Also, the bias voltage Vsc supplied through the selection storage capacitor line 81 is same as the signal A. Therefore, the storage capacitor line 81 is connected to the drain of the TFT 122 of the signal selection circuit 120 so that the signal line 82 for supplying the signal A can be omitted. Thus, the high-density integration of the pixel element 200 can be achieved.

A modular raceway system for any combination of high voltage power lines and low voltage data communication lines uses a combination hinge-latch cover member and a single piece base member. The system incorporates an elliptical profile and eliminates conventional sidewalls, and presents the hinge-latch mechanism to releasably secure a cover member in a snap-lock manner to the base member.

Low voltage electrical power is supplied to a diagnostic control device in a sealed compressor. Electrical power is tapped from a high voltage power line and transformed to low voltage power that in turn operates the diagnostic control device. The diagnostic control device and the electric voltage transforming system are housed within the sealed compressor shell, thus eliminating the need for additional openings in the compressor shell. Other low voltage devices can be powered in this way.

The invention discloses a method and a two-connection board device for replacing tension insulator strings of high-voltage transmission lines with upspinning and charging. The insulator strings are loosened first by using special tools such as end wing clips and insulating pull plates; The pulleys and screw rods on the side make all the ends of the insulator strings disengage; finally, the pulleys on the ground wire brackets are used to rotate the porcelain bottle strings from the horizontal state to the vertical state, thus changing the complex operation into a relatively simple operation, which greatly shortens the time Potential working time to ensure the safe operation of the line; live replacement of the high-voltage transmission line tension insulator string double-connected plate device, including two wing cards and two screw screws, and also includes two pairs of insulating pull plates, one end of the two pairs of insulating pull plates They are respectively connected with two wings of the wing card, and the other ends are respectively connected with a lead screw, and the other ends of the two lead screws are respectively connected with the two wings of the other wing card. The structure is simple, easy to operate and low in cost.

A power supply system that supplies high-voltage power to a vehicle drive motor is provided to achieve reduction in size, weight and cost of power supply. The power supply system includes a plurality of battery modules connected in series. With the intermediate connection point of the battery modules as an electrical neutral point, power is supplied to a three-level inverter via a three-level-potential high-voltage power supply line having potentials of +150V and −150V relative to this neutral point. In the three-level inverter, direct-current electric power is converted into three-phase alternating-current electric power to drive an electric motor. Accordingly, the withstand-voltage performance required of control units or control elements connected to the high-voltage power supply line can be halved as compared with the related art, thereby allowing a reduction in the size, weight, and cost of the power supply system. Further, the electric power generated by a generator is converted into direct-current electric power by a three-level converter and supplied to the high-voltage power supply line to charge the battery modules.

A communication device for use on high voltage power lines provides for broadband communications over such high voltage power lines. The device has an impedance matching circuit configured to connect at one end to a high voltage line arrester of the high voltage power line, as well as a limiter circuit coupled to the other end of the impedance matching circuit to limit a voltage associated with a broadband signal. A noise blanker circuit is coupled at one end to this other end of the impedance matching circuit and is configured to inhibit presentation of a time delayed incoming signal to the broadband modem upon detection of electrical noise. The communication device can further comprise link aggregation and/or a differential circuit for providing non-inverted and inverted broadband signals for both reception and transmission. A corresponding method of communicating broadband information over a high voltage power line is disclosed.

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 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.

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.

A method for measuring a three-dimensional power-frequency electric field on basis of curve integral of equivalent charges on surfaces of transmission conductors includes acquiring relevant parameters of intensity of the three-dimensional power-frequency electric field of a transmission line at first; then building a three-dimensional model for the transmission line hung at different altitudes on the basis of a conductor catenary equation; determining the actual height of the corresponding conductor located at an optional position of the transmission line within a span; further obtaining the equivalent charges on the surface of the corresponding conductor located at the optional position of the transmission line within the span by a curve integral method for the equivalent charges on the surfaces of the conductors of the transmission line hung at the different altitudes; and finally, computing the intensity distribution condition of a space electric field generated by a multi-conductor system according to a field intensity superposition principle when the conductors at two ends of the span have different altitudes. By the aid of the method, an actual spatial erection condition of the high-voltage power line can be truly reflected, and the method is favorable for accurately computing the intensity of the three-dimensional space electric field of the high-voltage transmission line, and provides a reliable basis for evaluating an electromagnetic environment of the transmission line.

A control system for a power plant is provided, configured to influence actual HV characteristics of an HV power line at a point-of-interconnection to a grid. The control system includes an MV-compliant measurement system configured for connection with an MV power line of the power plant, and an evaluation unit. The evaluation unit is connected to the MV-compliant measurement system and is configured to determine calculated HV characteristics of the HV power line based on measurement values received from the MV-compliant measurement system at the MV power line and based on a model of a transformer. The transformer transforms from medium voltage on the MV power line to high voltage on the HV power line. The evaluation unit is configured to generate a control signal based on the calculated HV characteristics in order to control the power plant for influencing the actual HV characteristics of the HV power line.

The present invention relates to an insulated barrier preventing wildlife from simultaneously contacting an electrically energized and an electrically grounded surface, comprising: electrically insulated radially and axially extending members forming an hexagonal web having a first hexagonal rib that defines an opening offset from the geometric center of the barrier; and an insertion slot extending from an outer portion of said barrier to the offset opening for movement of said barrier onto electrical equipment utilizing and installation grip area for engagement with a gripping portion of an installation tool.

The invention discloses a device and a method for high-voltage power line insulator imaging and contaminant detection. The device comprises an unmanned aerial vehicle hanging cabin, a camera and a digital signal processor, wherein the unmanned aerial vehicle hanging cabin is arranged on a high-voltage power line, the camera is arramged on the unmanned aerial vehicle hanging cabin and is used for collecting videos and images of an insulator, the digital signal processor is arranged on the unmanned aerial vehicle hanging cabin, and comprises a video catching module, a video processing module, a video coding and decoding module and a video transmission module, the video catching module obtains a real-time image sequence of the insulator, the video processing module carries out target detection, tracking and pollution degree analysis, the video coding and decoding module carries out compression processing on the image, the network bandwidth is reduced, and the video transmission module realizes the network transmission on the final coding image sequence and pollution analysis result. The device and the method have the advantages that the high-definition camera and the video real-time monitoring system are used for realizing the automatic detection on the insulation pollution degree, the work efficiency of the circuit routing inspection can be effectively improved, and the circuit routing inspection automation is realized.

The invention relates to an ultraviolet detector based on a nanowire array, in particular to an ultraviolet detector based on a gallium oxide nanowire array and a preparation method thereof. The method comprises the steps that a gold thin film is deposited on an Al2O3 sapphire substrate through the radio frequency magnetron sputtering technology, then, spheroidizing annealing is performed on the obtained gold thin film and therefore gold particles are obtained; finally, Ga2O3 nanowire arrays grow on the gold particles. A photoelectric performance testing result of the ultraviolet detector shows that the detector has the good photoelectric response. The ultraviolet detector has the advantages that the obtained ultraviolet detector based on the gallium oxide nanowire array is stable in performance, has the strong photoelectric response to deep ultraviolet ray of a sun blind region, and is sensitive in reaction, small in dark current, capable of being applied to detection of fire alarm, high-voltage power line corona and the like; in addition, the preparation method has the advantages of being high in technological controllability, easy to operate, good in universality and capable of achieving restorability during repeated tests, and has the great application prospect.