1041 results about "High voltage transmission lines" patented technology

A system and method in which an overhead high voltage transmission line sensor system is able to measure one or more of temperature, current, and line sag for a conductor within a high voltage transmission line system. The sensor system may be able to clamp to a transmission conductor or splice, harvest power from the transmission line, and/or transmit data corresponding to measurements of current, temperature, and line sag.

The invention relates to a high voltage overhead transmission line line-inspection unmanned aerial vehicle photoelectric detection device belonging to the technical field of power line inspection. The invention aims at solving the problem of single technology of the existing overhead transmission line line-inspection. The high voltage overhead transmission line line-inspection unmanned aerial vehicle photoelectric detection device mainly comprises an unmanned aerial vehicle, a GPS (global position system) inertial integrated attitude azimuth detection device, a damping device, a rotation detection nacelle, a ground data receiving processor and a controller. The high voltage overhead transmission line line-inspection unmanned aerial vehicle photoelectric detection device is characterized in that the GPS inertial integrated attitude azimuth detection device is arranged at the inner part of the unmanned aerial vehicle; the rotation detection nacelle is hung below the unmanned aerial vehicle by the damping device; a photoelectric stabilized platform is installed in the rotation detection nacelle; flexible combination of any two or more of a visible light camera, an ultraviolet ray imager and a full-digital dynamic thermal infrared imager and a laser ranging device are borne on the photoelectric stabilized platform; and the rotation detection nacelle is provided with a visible window. With the adoption of the high voltage overhead transmission line line-inspection unmanned aerial vehicle photoelectric detection device, a high voltage transmission line can be monitored, and a comprehensive and precise high voltage overhead transmission line line-inspection task is realized by combining interchange among a plurality of sensors.

The invention provides a branch pruning robot for overhead high-voltage transmission line live working. The branch pruning robot comprises a robot working platform, a spindle drive box, a gravity center adjusting device, an operating arm swing joint and a tail end tool, wherein the robot working platform serves as a mobile carrier of the robot and is hung on a wire through a pair of antisymmetric mechanical arms; a longitudinal spindle is arranged in the spindle drive box and can be rotated by 360 degrees; the operating arm swing joint of the robot is fixedly connected with the spindle and driven by a motor to rotate along with the spindle; the operating arm swing joint can drive an operating arm to swing leftwards or rightwards by 30 degrees, and cone-shaped body space with a 60-degree solid angle below the robot can be completely covered in the robot working area; the tail end tool is carried at the tail end of the operating arm and provided with an independent power supply and control system. The branch pruning robot can replace manual operation, is safe, reliable and easy to operate, and improves branch pruning efficiency, and the functions of the robot are expanded.

The invention discloses a self-made heat conductor and heating equipment into which an insulating heat conduction material is embedded and an implementation method of the self-made heat conductor andthe heating equipment. The self-made heat conductor is of a coaxial cable structure, and comprises an outer conductor, the insulating heat conduction material and an inner conductor. The insulating heat conduction material is good in heat conduction and has an insulating capability. The insulating heat conduction material surrounds the outer side of the inner conductor to completely surround the periphery of the inner conductor, so that the inner conductor and the outer conductor are completely isolated from each other. The heating equipment has the two types of sending-end heating equipment and receiving-end heating equipment. The sending-end heating equipment applies alternating current or direct current between the outer conductor and the inner conductor of the self-made heat conductorthrough an output power supply of an anti-icing and de-icing power transmission device to achieve the anti-icing and de-icing purpose, and the receiving-end heating equipment is connected with a loadthrough a receiving-end steel core to achieve the anti-icing and de-icing work. By means of the self-made heat conductor and heating equipment into which the insulating heat conduction material is embedded and the implementation method of the self-made heat conductor and the heating equipment, heating of steel core resistors of the self-made heat conductor and the heating equipment themselves is effectively utilized, the cost is low, and the effect is good. Under the control of a control center, the anti-icing and de-icing work is implemented and can be implemented online when a high voltage transmission line works, and the safety of electric equipment is guaranteed.

The invention provides a three-dimensional visual processing method of an extra high voltage transmission line, which comprises the following steps: synchronously acquiring laser point cloud data and digital image data along a transmission line corridor through an airborne laser radar measurement system, and carrying out three-dimensional visual processing and professional analysis in combination of line design parameters and operating parameters after data processing and three-dimensional modeling so as to provide an efficient means for the maintenance and the management of the transmission line of an electric power enterprise. The invention further provides a three-dimensional visual processing system for the extra high voltage transmission line, which comprises a three-dimensional data generation module and a three-dimensional data visual operation module, wherein the three-dimensional data generation module is used for receiving digital image data and laser point cloud data obtained by the laser radar measurement system and generating the three-dimensional scene of the transmission line corridor; and the three-dimensional data visual operation module is used for carrying out three-dimensional visual operation on the three-dimensional data of the transmission line corridor.

The invention discloses a patrol robot system for an overhead high-voltage transmission line. The patrol robot system comprises a robot, the overhead line and a ground base station. The overhead line is supported through a cross bar. The robot comprises a robot body, a battery, a walking device, a single-chip microcomputer, a monitor device and a mobile communication device. The ground base station comprises a ground communication device and a ground monitor device. The ground base station and the robot are connected in a satellite communication mode. A robot platform is arranged on one side of the overhead line. The walking device comprises a walking mechanism and an obstacle avoidance mechanism. The walking device is connected with the single-chip microcomputer. The monitor range of the patrol robot is wider, environmental interference resistance is higher, the better obstacle avoidance mechanism is provided, a rest area is provided for the patrol robot, the service life of the patrol robot is prolonged, an automatic charging device is provided, work loads of workers are reduced, and the work of patrolling high-voltage lines and ultra-high-voltage lines can be completed excellently.

The invention discloses a fault positioning method for a transmission line and belongs to the technical field of power systems. The fault positioning method comprises the following steps: arranging a Rogowski coil-based broadband core-through traveling wave detection device on the high-voltage transmission line; acquiring a current traveling wave signal of a three-phase line; performing singular value detection by applying the phase mode conversion and wavelet mode maximum principle; accurately identifying the traveling wave line mode wave head, and accurately determining the wave head arrival time by using a GPS high-precision clock; and measuring the wave speed of real-time traveling wave mode on line according to different wave head time difference information to realize accurate fault positioning. The fault positioning method has the advantages of effectively avoiding two main factors influencing the traveling wave fault positioning precision, along with high positioning precision and accurate and reliable fault positioning result.

The invention provides an extra high voltage transmission line online monitoring system, comprising that a data collection terminal collects comprehensive load, temperature of a transmission line, inclination angle of a pole, inclination angle of an insulator string, leakage current of the insulator string, meteorological information, vibration of transmission line and vibration of the pole, transmits the collected signals to a central data processing unit; the central data processing unit performs anti-interference process on each signals, packs and transmits to a background analysis device through a wireless communication network, and displays data information on a GIS electronic map; the background analysis device determines whether the transmission line is abnormal or not based on each signal and combination of mathematical model, transmits alarm information in time when being abnormal. The invention performs anti-interference process on the collected data, is capable of shielding interference of extra high voltage strong electromagnetic field and accurately monitoring working conditions of extra high voltage transmission line.

A method of tapping a high voltage transmission line for input into a power distribution substation and system for the conversion of the tapped high voltage electricity to medium voltage electricity are disclosed. The method comprises the steps of dividing the transmission line and attaching the conductors to the primaries of at least two transformers via a series connected first disconnect switch, second disconnect switch and circuit breaker. A bus interconnects the first disconnect switch and the second disconnect switch and the bus of the first transformer bay is connected to the bus of the second transformer bay using a circuit breaker. The system comprises an insulator dividing the transmission line into separate conducting lines and attaching them to the primaries of at least two transformers via a series connected first disconnect switch, second disconnect switch and circuit breaker. A bus interconnects the first disconnect switch and the second disconnect switch and the bus of the first transformer bay is connected to the bus of the second transformer bay using a circuit breaker. The secondaries of said power transformer output the medium voltage electricity.

The invention relates to a method for intelligently diagnosing thermal defects of a high-voltage transmission line based on an infrared image, being a method for automatically detecting thermal defects of a transmission line in a shot infrared image in a sports mode. The method comprises the following operating steps of: 1, adopting parts in a clustering recognition line based on line object perception; effectively removing the influence of heating of automobiles running on the ground, ground heat sources and reflecting heat of pole towers in complex natural scenery to thermal defect diagnosis of lines; 2, and adopting a relative temperature difference method to diagnose whether the recognized line part has thermal defects, eliminating the influence of additional temperature rise due to solar radiation, and meanwhile reducing errors due to inaccurate parameters of detected distance, environmental temperature, humidity, wind speed and the like. According to the method, the efficiency of detection for the thermal defects of the transmission line can be effectively increased. The method is effectively applied to inspection business of vehicle-mounted or helicopter transmission lines.

The invention provides a traveling wave direction pilot protection method, which comprises the following steps of: respectively acquiring a wave head polarity of a current fault initial traveling wave and an initial polarity of a power frequency component in a voltage fault traveling wave at the first side of the high voltage transmission line, and respectively acquiring a wave head polarity of a current fault initial traveling wave and an initial polarity of a power frequency component in a voltage fault traveling wave at a second side of the high voltage transmission line; comparing a wave head polarity of a current fault initial traveling wave with an initial polarity of a power frequency component in a voltage fault traveling wave at a local side so as to determine a fault direction at the local side; and exchanging information of a fault direction at the first side with information of a fault direction at the second side, comparing the information of the fault directions between the two sides, judging whether the high voltage transmission line has an internal fault and determining whether to carry out the operation of relay protection. The invention also provides a traveling wave direction pilot protection device and a traveling wave direction pilot protection system, which can be applied to the high voltage transmission line and can rapidly and accurately detect the fault and the type of the fault and carry out protection operation.

The invention relates to a texture-based insulator fault diagnostic method. According to the invention, a visible light image collected in the inspection process of a high voltage transmission line by a helicopter is used as an object to be processed, and the diagnosis can be carried out based on an insulator fault of the visible light image. The method comprises the following steps of: inputting an insulator image, carrying out gray processing, obtaining a bounding rectangle and rotating, carrying out a GLCM (gray level co occurrence matrix) method, blocking, obtaining textural features, carrying out Gabor filtering, blocking, calculating block-mean value and variance, performing feature fusion, and determining whether to have a string-drop phenomenon based on a threshold value. The method provided by the invention diagnoses the insulator string-drop characteristic by texture, integrates the thoughts of the most classical GLCM texture diagnostic method in the texture diagnosis and the recent research focus Gabor filter texture diagnosis, adjusts the parameter settings of the GLCM and the Gabor filter and efficiently and accurately finds out the string-drop insulators. The method can effectively improve the efficiency of the thermal defect detection of the power transmission line and can be effectively applied to the inspection business of the vehicle-mounted or helicopter power transmission line.

The invention discloses a traveling mechanism of a robot on a high voltage transmission line, which is characterized in that 3 traveling arms including a fore arm, a middle arm and a rear arm are arranged on a robot main body. When the robot travels on the transmission line, the fore arm and the rear arm are on the same side of the transmission line, and the middle arm is on the other side of the transmission line. Each traveling arm comprises a traveling wheel, a lifting arm, a braking mechanism and a swing arm, wherein one end of the swing arm is connected with the robot main body through a swing joint, and the other end is connected with the lower end of the lifting arm; the traveling wheel is installed at the side part on the upper end of the lifting arm; and the braking mechanism is installed on the lifting arm and below the traveling wheel. The traveling mechanism can drive the robot to conveniently cross various obstacles on the transmission line, and the stability is good.

The present invention relates to a robot which runs along a multi-splitting overhead high voltage transmission line, in particular to the structure improvement of a robot which runs along the whole course of an overhead high voltage transmission line. The present invention creatively connects the lower end of a big arm with a gravity adjusting mechanism by a support frame. The gravity adjusting mechanism has the function of adjusting the gravity of the robot at proper time during the process that the robot moves forwards by two arms in turn, so as to ensure that the robot is stable during the running process, can not cause the gravity excursion of a whole operation vehicle and cause the phenomenon that the operation vehicle can not run stably on a transmission line. In addition, the robot can run along the whole line of the overhead high voltage transmission line and can span over or avoid various kinds of barriers on the line, and the robot is not required to be conveyed from one side of a pole tower to the other side by manpower, thereby greatly shortening the auxiliary time for the robot to operate, improving the work efficiency and ensuring the safety of the detection process.

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.

The invention provides a conducting wire deicing method and device for a high-voltage transmission line. The conducting wire deicing device comprises a conducting wire walking robot, a rotating deicing device, a power device and a control device, wherein the conducting wire walking robot is driven by a fuel generator; the rotating deicing device is arranged on the conducting wire walking robot and used for removing ice coated on the conducting wire by rotating strike force; the power device is coupled with the rotating deicing device and used for driving the rotating deicing device to rotate; and the control device is used for controlling the movement of the conducting wire walking robot and the rotation of the power device. In the conducting wire deicing device for the high-voltage transmission line, a rotating strike rod, a vibration shock hammer and an ice scraping shovel are arranged on the conducting wire walking robot and simultaneously work to effectively remove the ice coated on the conducting wire by transverse shock, axial shock and axial extrusion.

The present invention provides an inductive power supply for producing well-regulated noise-free supply of power suitable for sensitive equipment from a power transmission line. In an embodiment of the invention, the inductive power supply can be easily and safely attached to a high voltage transmission line for retrieving low voltage, AC or DC power. The inductive power supply utilizes an inductor, which is also known as a current transformer, to retrieve power from the transmission line. Energy storage components such as super capacitors may be optionally employed to store energy for later use. The electrical output of the power supply is a regulated low voltage output to power a load, e.g., sensitive electronics such as wireless devices and other microelectronics. The power supply further includes a sealed compartment for housing various types of low power devices coupled to the regulated low voltage output.

The invention relates to a high-voltage transmission line fault identification method based on computer vision, which relates to the technical field of high-voltage transmission line running state monitoring. The invention aims at solving the problem of high false alarm rate of the existing high-voltage transmission line on-line monitoring system. 11) carrying out edge detection on the transmission line image according to the edge detection algorithm, a strong edge image is obtained, and edge endpoints and edge directions are obtained from the strong edge image. Since the gradient direction ofthe edge endpoints is perpendicular to the edge direction, an edge connection window is selected according to the gradient direction of the edge endpoints, and edge connection points are selected inthe edge connection window according to a Hough transform method, and the edge connection points are connected into an edge image. Step 2, screening the transmission lines from the edge images of thetransmission line images by adopting a transmission line detection algorithm based on phase grouping; Step 3, the transmission conductor is processed to identify the fault on the transmission line. Itis used to identify transmission line faults.

The invention discloses an automatic receiving and releasing device of an unmanned aerial vehicle for high-voltage transmission line inspection, and belongs to the technical field of unmanned aerial vehicle application and power detection. The automatic receiving and releasing device of the unmanned aerial vehicle is composed of four parts, namely, a turnover-plate-type closed box which can be opened and closed automatically, a central parking apron which can be lifted and lowered automatically, a two-way push-rod-type clamping fixation mechanism installed on the central parking apron and theturnover-plate-type closed box, and a ground control system. The autonomous landing of the unmanned aerial vehicle is completed by adopting a GPS and vision complementary positioning method and a double-graphics fast recognition and positioning algorithm, so that it is ensured that the unmanned aerial vehicle lands accurately on a landing platform composed of the parking apron which can be liftedand lowered automatically and a turnover-plate-type cabin door. The automatic receiving and releasing device of the unmanned aerial vehicle for high-voltage transmission line inspection provides a practical and effective solution for unmanned and intelligent inspection operation of transmission lines, particularly for autonomous launching and automatic positioning and landing and automatic charging of the unmanned aerial vehicle in the transmission line inspection, and can be applied to ground carrying robots, automobiles or ground base stations.

The invention discloses a device and a method for measuring voltage of a noncontact charge induced high-voltage transmission line, and relates to an electronic sensor in the field of intelligent power grids. The device comprises a voltage testing sensor; the voltage testing sensor comprises an electric field sensor, a voltage correcting sensor, a data processing module and a signal output module, wherein the electric field sensor is used for acquiring electric field signals around the transmission line, the data processing module is used for receiving the electric field signals and converting the electric field signals into voltage signals, and the signal output module is used for receiving the voltage signals, processing the voltage signals and outputting the processed voltage signals to a display; and the electric field sensor comprises two hemispherical shell types electrodes and a measurement capacitor placed in a cavity formed by two hemispherical shells, and two polar plates of the measurement capacitor are connected with the hemispherical shell types electrodes respectively. Because the acquired signals are digitally transmitted, the precision is improved, the measuring range is wide, and saturation is not caused; and because the sensors are single-pole noncontact sensors, the installation is simple, the detachment is convenient, the volume is small, and great convenience is brought to construction and maintenance of the power grids.

The invention provides a two-arm swing obstacle-clearing type line walking robot body, relating to a technique of robots. The invention is designed based on the scheme that an arm is fixed in cables and the other arm rotates around a fixed arm along with a body with counterweight movement in the main obstacle-clearing procedure. The two-arm swing obstacle-clearing type line walking robot body is characterized by comprising a body, a balance movable body and two working arms, wherein the body is composed of a stand and two sets of arm span adjusting components; the balance movable body consists of a counterweight component and a control box with a storage battery; the two working arms are respectively composed of the same rotating component, swinging component, traveling component and clamping component; the working arms are respectively mounted on two movable bodies of the body, wherein five degrees of freedom included in the movable bodies and one degree of freedom included in the balance movably body can provide all functions for check and obstacle clearance. The invention is suitable for the polling operation of high-voltage transmission line multi-line stage, and can prevent obstacles of shockproof hammers, suspension clamps, strain clamps, insulator chains, towers, and the like.

The invention relates to a deicing method for a high-voltage power transmission line and a device. The device is located on a supporting plate of a travel carriage on the high-voltage power transmission line and fixedly provided with an electrolytic cell filled with strong electrolyte solution and the like. The storage battery is charged continuously through electromagnetic inducing electrical energy which is from a solar cell panel and is generated under wind power or movement of three electromagnetic induction coils that are suspended on a beam and from a solar cell plate. The storage battery is connected with the electrolytic cell. Hydrogen and oxygen generated by the electrolytic cell enter a combuster through a delivery pipe, a one-way valve, a polycarbonate pipe and a lock net adaptor, respectively; a spring sheet metal and a thin plate that form an ice and snow detector as well as an electrode connected with a power line of a high-voltage boosting circuit below the reed pipe are arranged at the top of the combuster below the high-voltage transmission line. When the thin plate is covered by ice, and elastic metal and thin plate bend downwards, the free end and the magnetic block at the top of the combuster attract each other, and the power line of a high-voltage boosting circuit is switched on. Mixture of hydrogen and oxygen in the combuster combusts so that the piston body in the combuster strikes the high-voltage transmission line to enable the ice and snow to fall off.