155 results about "Overhead power line" patented technology

The invention discloses a power distribution overhead line icing measurement method, and belongs to the technical field of icing measurement, and the method comprises the steps: calculating the icing risk probability of a key position coordinate through an icing risk probability model, and constructing a high-precision sensor deployment multi-objective function through the combination of the icing risk probability, and carrying out the high-precision sensor deployment; constructing an asymmetric icing physical model to perform icing state analysis on the fused high-precision sensing data to obtain icing weight distribution and icing direction of the power distribution overhead line; and carrying out real-time early warning feedback on the icing weight distribution and the icing direction of the power distribution overhead line. According to the method, the ice layer weight distribution and the asymmetric direction of each key point of the power distribution overhead line are dynamically calculated by adopting a mode of combining a nonlinear fusion algorithm and a physical and mechanical model, and meanwhile, a risk probability model and a heuristic deployment optimization strategy are introduced, so that high-precision sensor precise layout and dynamic early warning feedback are realized; and the spatial resolution and response efficiency of icing monitoring are remarkably improved.

The invention discloses an overhead power line icing thickness detection method and system based on a structure perception framework, and the method comprises the steps: firstly obtaining point cloud data of a power transmission line, preprocessing the point cloud data, and inputting the preprocessed point cloud data into a structure perception semantic segmentation network; the network adopts a four-level encoder-decoder architecture, an encoder extracts multi-scale features through local space encoding, cross-scale space attention fusion and local aggregation operation, and a decoder realizes feature fusion in combination with a jumper connection mechanism and outputs a lead semantic segmentation result; extracting a conductor point set based on a segmentation result and carrying out Euclidean clustering strand splitting; performing biplane projection and polynomial fitting on each strand of wire to construct a three-dimensional center line; and finally calculating the distance from the point to the center line, selecting a peripheral point set to calculate the wire envelope radius, and combining the radius of the bare wire to obtain the icing thickness. Measurement deviation caused by point cloud shielding, wire bending and asymmetric icing is effectively solved, millimeter-level precision non-contact ice thickness detection in a complex environment is achieved, and reliable technical support is provided for power grid disaster prevention.

The utility model discloses an unmanned aerial vehicle with a deicing device, and relates to the field of deicing of high-voltage overhead conductors, the unmanned aerial vehicle is provided with the deicing device, the deicing device comprises a microwave generator and an ultrasonic generator which are oppositely arranged, and a power transmission line is located between the microwave generator and the ultrasonic generator. Microwaves and ultrasonic waves emitted by the microwave generator and the ultrasonic generator face the power transmission line. According to the utility model, the ice layer is cracked by utilizing high-frequency vibration heating generated by ultrasonic waves and microwaves, so that the purpose of removing the ice layer is achieved. According to the method, a power grid line does not need to be contacted, and line damage possibly caused by direct impact is avoided.

An unmanned aerial vehicle (UAV) configured for autonomous operation includes an electric propulsion system comprising a plurality of motors and a plurality of rotors and a sensor system. A control system receives data from the sensor system for controlling the electric propulsion system. A battery system includes a plurality of battery cells and a charging system for receiving power a by electro-magnetic induction from a power line cable. The UAV is for inspection of AC-overhead power lines. A method includes operating the UAV comprising generating image data relating to an overhead power line by the sensor system, approaching a power line cable by the UAV, receiving power from the power line cable by the charging system and charging the battery with the power received, and the UAV taking off from the cable.

The invention discloses an overhead power transmission line icing removing device, and relates to the technical field of power transmission lines, the overhead power transmission line icing removing device comprises a device main body with a side portion provided with an ice removing block and a heating member, the ice removing block and the heating member are in contact with an overhead power transmission line, a first moving member is arranged in a first housing of the device main body, and a second moving member is arranged in a second housing; the overhead transmission line is fixed between the first moving part and the second moving part, a deicing part is arranged in the second shell, an ice scraping part is arranged in the first shell, and the deicing part and the ice scraping part are both in contact with the overhead transmission line. Deicing is carried out through the deicing block, the heating piece, the deicing piece and the ice scraping piece of the device main body, the guide wheel for moving is adaptive according to the size of the power transmission line, the contact area between the guide wheel groove and the power transmission line is increased, the phenomenon that the guide wheel slips on the power transmission line is avoided, and the device can stably move on the power transmission line and is convenient to use. And subsequent deicing work on the surface of the power transmission line can be carried out.

The invention relates to a secondary composite deicing device and method for an overhead transmission line. The device comprises an unmanned aerial vehicle mechanism, a moving mechanism, a first-stage deicing assembly and a second-stage deicing assembly. The first-stage deicing assembly and the second-stage deicing assembly are installed at the front end of the moving mechanism, and the second-stage deicing assembly is located between the moving mechanism and the first-stage deicing assembly. The first-stage deicing assembly comprises an arc-shaped clamping jaw, a clamping piece, a vibration motor, a detection piece and a control unit, the clamping piece is used for adjusting the opening angle of the arc-shaped clamping jaw, the vibration motor is used for driving the arc-shaped clamping jaw to knock an ice layer, the detection piece is used for detecting the thickness of the ice layer, and the control unit is used for adjusting the clamping force of the clamping piece and the knocking frequency of the vibration motor; the secondary deicing assembly comprises an ice shovel and an angle adjusting part, the ice shovel is of a U-shaped structure and is rotatably fixed to the moving mechanism, the angle adjusting part is in driving connection with the ice shovel, and the front end of the ice shovel abuts against the electric wire during deicing. Compared with the prior art, the method has the advantages of high deicing efficiency, high adaptability and the like.

A control system 40 for operating a work machine 10 around an over-head power line 42 has an electric field sensor 41 and an operator input, such as a user interface 6. If the output from an electric

This invention discloses a cost control method for comparing and selecting mechanized construction route schemes for overhead power lines. The method involves planning the route based on actual project conditions, determining the initial route length L1, the terrain proportions of the areas traversed by the route, the overall short-distance transport distance, the construction scale, the selection of conductors and ground wires, and the selection of tower modules. It also calculates the cost per kilometer of the project structure under different terrain conditions. The route is then adjusted to be closer to existing rural roads, village roads, and farm roads, reducing the overall short-distance transport distance. The cost per kilometer of the project structure under different terrain conditions is calculated accordingly. Based on the difference in cost per kilometer before and after adjustment, combined with the project route length and the proportions of different terrains, the increased length ΔL of the economical route is calculated. The relationship between the difference between the adjusted route length L2 and the original route length and ΔL is determined. If L2 - L1 ≤ ΔL, the adjusted route is more economical. This method effectively plans more economical and reasonable route schemes that are convenient for mechanized construction.

This invention relates to the field of overhead power line maintenance technology and discloses a grounding operation robot, including a pole-climbing device, a robotic arm, and a grounding ring installation device. The pole-climbing device is used to climb power poles, and the robotic arm is mounted on the pole-climbing device. The grounding ring installation device includes a nut-tightening fixture, a grounding ring holder, a first connecting bracket, and a first drive mechanism. The first connecting bracket is connected to the robotic arm, and the robotic arm is used to drive the first connecting bracket to move. The nut-tightening fixture, the grounding ring holder, and the first drive mechanism are all mounted on the first connecting bracket. The grounding ring holder supports the grounding ring, and the first drive mechanism drives the nut-tightening fixture to move closer to and away from the grounding ring holder. The nut-tightening fixture is used to tighten the clamp bolts of the grounding ring. This grounding operation robot improves the safety of maintenance personnel, eliminates the need for a lift vehicle to support maintenance personnel, has fewer site restrictions, and improves the flexibility of maintenance operations.

Systems, methods, and apparatuses can control work machine movement to prevent collision with an overhead power line. With the work machine performing machine movement relative to the overhead power line, a combination of the magnitude of electric field sensed by any one of a plurality of electric field sensors and velocity of machine movement for an associated position and / or movement sensor can be monitored to determine whether such combination reaches or exceeds one or more predetermined thresholds. Operations regarding machine control can be performed responsive to the combination reaching or exceeding each of the one or more predetermined thresholds.

The utility model discloses an electric power overhead line crossing tool, and relates to the technical field of overhead lines. At present, an overhead line crossing tool is time-consuming in installation and limited in application range, and affects the fixing efficiency and applicability. A sliding groove is formed in the surface of the fixing plate. A sliding rod is arranged in the sliding groove. The bottom of the sliding rod is fixedly connected with a clamping plate. The upper surface of the fixing plate is rotationally connected with a rotating shaft. The outer side of the rotating shaft is fixedly connected with a rotating plate. The outer side of the fixing plate is fixedly connected with a connecting plate which is fixedly connected with a supporting frame, a worm is arranged below the supporting frame, the upper surface of the supporting frame is fixedly connected with a guide rail, and a moving block is arranged on the guide rail. According to the utility model, the overall mounting and dismounting difficulty is reduced, telegraph poles with different radiuses can be clamped and fixed, routes with different radiuses can be limited, and the positions and the number of the moving blocks are convenient to adjust.

The invention discloses an electric tensioner and method for an overhead transmission line, and relates to the technical field of tensioner equipment, the electric tensioner comprises a supporting frame, a traction mechanism for pulling a cable is arranged on one side in the supporting frame, and an overhead conveying mechanism for regulating and controlling the traction tension of the cable is arranged on one side in the supporting frame; and a driving mechanism for driving the traction mechanism and the overhead conveying mechanism to rotate is arranged in the supporting frame. Passive torsion release is achieved through the conical wire wheel and the inclined arrangement, due to the fact that the wire wheel is of a conical structure and is arranged in an inclined mode, when a cable slides on the surface of the wire wheel, controlled sliding and self-adaptive rotation are generated under the controllable friction force effect provided by a rubber sheet, and through the synergistic effect of the conical wire wheel and the inclined arrangement, the cable can be driven to rotate in a controlled mode. Therefore, the cable gradually releases the internal accumulated torsion stress in the conveying process.

The application discloses an overhead transmission line spacer, and relates to the technical field of electric power fittings, which comprises a frame, a plurality of supporting arms provided on the frame, a wire clamp provided at one end of each supporting arm, a limiting pin provided at the other end of each supporting arm, a waist hole provided on the frame, and a swing channel provided on the frame for swinging of the lower arm. The limiting pin is inserted into the corresponding waist hole to limit swinging of the supporting arm. The supporting arm is composed of an upper arm and a lower arm. The upper arm is rotationally connected with the frame, and the limiting pin is arranged on the lower arm. The trigger mechanism and the accommodating cavity are arranged on the lower arm. The spare pin and the A elastic member are arranged in the accommodating cavity. The spacer for the overhead transmission line can automatically restore the limiting capacity after the original limiting function is lost, and the allowable swinging angle of the lower arm is limited in a range smaller than the original limiting range, so that the wire dancing is inhibited by stricter constraints, the phase-to-phase flashover and the fatigue risk of the fitting are significantly reduced, and the anti-dancing reliability and the line operation safety of the spacer under severe working conditions are greatly improved.

This utility model relates to recorders of emergency events and processes in electrical networks, specifically to fault location devices on overhead power lines (OPLs). The technical result consists of improving the fault location accuracy by taking into account the actual lengths of the OPL overhead sections. To this end, a unit for determining the actual wave propagation velocity in the damaged section and a wave fault location unit are connected via their additional inputs to the output of a unit for determining the actual length of the OPL overhead sections, the input of which is connected to a wire temperature sensor at the device's installation location.

The invention discloses an integrated insulation hoop for an overhead power cable of a distribution network and a use method thereof, the integrated insulation hoop comprises an insulation hoop and a cable fixing piece, and the cable fixing piece is detachably installed on the insulation hoop; the cable fixing part comprises a plurality of fast-pressing fixing wire clamps, and each fast-pressing fixing wire clamp comprises a wire clamp body, a cover plate, a connecting rod and a wrench. The first end of the wire clamp body is hinged with the cover plate, the second end of the wire clamp body is hinged with one end of the connecting rod, and the other end of the connecting rod is hinged with the wrench; the cable clamp body and the cover plate are arc-shaped, and a cable accommodating space is defined by the cable clamp body and the cover plate; good insulation performance can be achieved under the condition that an insulator does not need to be additionally installed, so that installation steps are simplified, the overall structure is more compact, space is saved for an original power transmission channel, and space power transmission line installation is improved.

The application relates to a power transmission line intelligent route selection method based on an adaptive node optimization ant colony algorithm, which comprises the following steps: based on geographic information system, environment factors are determined, a hierarchical analytic hierarchy process model is established, and various environment factors are quantified; based on a GIS grid map, a geographic space is divided into a regular matrix composed of multiple square units, power transmission line construction costs of each basic area are obtained by combining the hierarchical analytic hierarchy process model, and total route costs are obtained; according to the total route costs and the GIS grid map, intelligent route selection is carried out through the adaptive node optimization ant colony algorithm, and an optimal path is obtained. Compared with a traditional ant colony algorithm used for intelligent route selection, the ant colony algorithm used in the application increases adaptive adjustment, local variation and node optimization mechanisms, and the convergence precision and stability of the algorithm are improved; the application realizes a new overhead power line automatic optimization wiring method, and is helpful for automatically selecting the most economical route to establish a new line.

The application discloses an overhead power transmission line automatic clamping and tightening device and method, and belongs to the technical field of overhead power transmission line erecting equipment. The device is provided with a shell fixing ring positioned at a fixed part of a tower, a shell body is mounted on the lower surface of the shell fixing ring, and a lifting motor is mounted on the left rear surface of the shell body. The device comprises a synchronous wheel one mounted on the output shaft of the lifting motor, and a synchronous belt is rotatably mounted on the outer surface of the synchronous wheel one. The overhead power transmission line automatic clamping and tightening device is provided with a shell fixing ring convenient for hoisting, and the starting of the lifting motor is matched to control the use of the synchronous wheel one, the synchronous wheel two and the ratchet wheel, linkage adjustment gear two is rotated to control the rotation of the transmission sprocket one, so that the chain is controlled to move and convey the clamped clamping pieces, the clamping pieces are improved to clamp the line and stably tighten the limit, and the use of the pawl one and the pawl two avoids loosening of the clamping pieces of the automatic clamping mechanism during tightening.

The utility model relates to power system transmission line technical field discloses an overhead power line protection hardware, including two fixed rings, the adjacent side of two fixed rings is provided with protection mechanism, the top of fixed ring is provided with stabilizing mechanism, the stabilizing mechanism is used for adaptive adjustment under extreme terrain, the bottom of fixed ring is provided with stabilizing component, the protection mechanism includes two buffer rings, the opposite side of two buffer rings is fixedly connected with fixed shaft, the outer wall middle end of fixed shaft is fixedly connected with stress block, the adjacent side of two stress blocks is fixedly connected with spring left and right ends all. In the utility model, after the snow melts, the spring and the buffer block reset the bent electric wire, avoid long -term deformation damage, effectively improve the problem of existing technology under heavy ice pressure loss electric wire, significantly improve the power line security and durability.

The invention relates to a power cable for an overhead transmission line, which is applied to the field of cables, and is characterized in that a snow removal line is laid on a cable body in the same length direction, two ends of the snow removal line are positioned on the cable body through double-ring pieces, and the double-ring pieces and the snow removal line are inflated to realize bulging of the snow removal line and rotation of the snow removal line and the double-ring pieces; compared with an existing mode that a snow removing mechanism moves along the surface of the cable body to remove snow, on the one hand, the snow removing effect is guaranteed, the snow removing speed is increased, on the other hand, due to the arrangement of the double-ring pieces and the hollow snow removing lines, the load of the cable body is not prone to being increased, and the snow removing efficiency is improved. And in the snow removal process, the cable does not need to move along the length direction of the cable body, so that the sag of the cable body is not easily increased, and the surface of the cable body is not easily damaged by friction.

The invention relates to a foundation for a tower for a wind turbine, a transmitter, for example for mobile communications, or an overhead power line, with at least two superimposed foundation levels (2, 3), wherein at least two foundation levels (2, 3) each have at least two adjacent prefabricated concrete elements (4, 5), wherein the prefabricated concrete elements (4, 5) each have at least one base section (41, 51) and at least one web section (42, 52), each of which has a bottom surface (411, 511, 422, 522), wherein the at least one base section has at least one opening for receiving a tendon, which are arranged such that the openings of superimposed base sections (41, 51) are aligned, wherein at least one offset section (43, 53) is provided between the base section (41, 51) and the web section (42, 52) of the at least two concrete elements (4, 5) of at least one foundation level (2, 3). is,so that the undersides (422, 522) of the web sections (42, 52) of the concrete elements (4, 5) of at least two superimposed foundation levels (2, 3) can be arranged essentially at the same height.

The utility model discloses a grounding device for a low-voltage overhead line of a distribution network, which comprises a conductive grounding pillar, an insulating support is connected onto the conductive grounding pillar through a threaded lock sleeve, and an insulating clamping plate for insulating and clamping the low-voltage overhead line is arranged on one side of the upper end face of the insulating support. An insulating support is arranged on a conductive grounding pillar, a movable insulating clamping plate is slidably arranged on the insulating support, an insulating clamping plate is fixedly arranged on the insulating support, and rubber protection clamping sleeves are arranged at the two ends of an inner side arc-shaped clamping groove in front of and behind the movable insulating clamping plate and the insulating clamping plate. The movable insulation clamping plate is arranged on the movable insulation clamping plate, movably penetrates through the insulation clamping plate and enables the limiting insertion rod to be inserted into the limiting insertion hole for limiting, so that the movable insulation clamping plate is grounded, clamped and fixed when the low-voltage overhead line utilizes the locking rod; and meanwhile, the rubber protection jacket is used for protecting the steering grounding of the clamping side end in the clamping rotation direction of the low-voltage overhead line, so that the steering grounding of the low-voltage overhead line is further improved, and a better protection effect is achieved.

This utility model discloses a ranging device for measuring the sag attitude of overhead lines, belonging to the field of overhead line sag detection technology. It includes a sag detection device and a protective assembly. The sag detection device is an integrated structure, and the protective assembly is disposed on the outside of the sag detection device. The protective assembly includes a metal shielding cover, an epoxy-siloxane mixed coating, a hard aluminum alloy protective layer, a waterproof membrane, a stainless steel inner protective layer, and a transparent protective plate. The metal shielding cover is disposed on the outside of the sag detection device, and its outer surface is coated with an epoxy-siloxane mixed coating. This ranging device for measuring the sag attitude of overhead lines, through the protective assembly, provides comprehensive protection for the device itself, effectively preventing damage from weather changes. The fixing assembly allows for quick and stable installation of the device, preventing it from easily loosening.

The present application belongs to the technical field of overhead transmission line inspection, and provides a monitoring system and method for overhead transmission line inspection, specifically comprising the following steps: obtaining inclination data and wind speed data of an overhead transmission line tower, determining abnormal characteristics of the inclination data of the tower, if it is determined that there are abnormal characteristics, performing scene matching analysis on the wind speed data, if it is matched as a weak wind scene, triggering a confusion scene discrimination process; the confusion scene discrimination process specifically comprises: performing state analysis on the fluctuation amplitude of the inclination data through a short-term window. More accurate distinction between weak wind low-frequency vibration and two types of easily confused risks of basic real settlement, optimization of the misjudgment problem caused by frequency domain overlap, improvement of the inclination risk determination accuracy of the tower, and reduction of the dispersion of operation and maintenance resources, reduction of invalid inspection caused by vibration misjudgment settlement, and reduction of the overhead transmission line inspection and operation and maintenance cost.

The utility model discloses an anti-torque ultrahigh-strength anti-corrosion wooden pole, which relates to the technical field of anti-corrosion wooden poles, and comprises an anti-corrosion wooden pole used for cable communication construction, optical cable wiring and power overhead; a clamping groove is formed in one side of the anti-corrosion wood pole, a limiting block is arranged on one side of the interior of the clamping groove, a clamping block is arranged on the other side of the anti-corrosion wood pole, and an abutting block is arranged at one end of the clamping block. According to the anti-corrosion wooden pole, the clamping block on the left side of one set of anti-corrosion wooden pole makes contact with the clamping groove in the other set of anti-corrosion wooden pole, the abutting block on the clamping block extends to the other end of the clamping groove along the hole in the left side of the limiting block in the clamping groove, and the other set of anti-corrosion wooden pole is shifted along the clamping groove till the clamping block and the abutting block just abut against the two ends of the limiting block; according to the anti-corrosion wooden pole, the two sets of short anti-corrosion wooden poles are lengthened into the long anti-corrosion wooden pole, when the anti-corrosion wooden pole is used, only the long anti-corrosion wooden pole needs to be cut, and when the short anti-corrosion wooden pole needs to be lengthened, the anti-corrosion wooden pole can be used by connecting the clamping blocks, the clamping grooves and the limiting blocks in series.

The present application belongs to the technical field of overhead transmission line inspection, and provides a method and system for overhead transmission line inspection, comprising: comparing the airflow disturbance period corresponding to each line clamp area in the region inspection time sequence, screening out the time-repeated inspection area, and performing inspection interference analysis on the time-repeated inspection area to evaluate whether the initial inspection path planning is reasonable; if the initial inspection path planning needs to be adjusted, obtaining the priority inspection value corresponding to each time-repeated inspection area, re-planning the initial inspection path according to the priority inspection value, and obtaining the final inspection path, so that the priority of each non-interfered inspection area can be determined, and the inspection is arranged in the order from large to small according to the priority inspection value when the initial planned inspection path is adjusted, thereby avoiding frequent long-distance flight or unnecessary wandering of the unmanned aerial vehicle during the inspection process, and improving the inspection efficiency of the unmanned aerial vehicle on the line clamp area of the high-speed overhead transmission line.

The present application relates to overhead power line operation maintenance and detection repair technical field, disclose a kind of composite insulator rod core heating infrared image defect training sample generation method, comprising: from the original defect-free image in defect-free inspection infrared sample library is taken out and is converted into normalized gray image by image preprocessing operation;The heating point of composite insulator rod core in normalized gray image is positioned, and heating point pixel information is obtained;Generate heating area mask on original defect-free image based on heating point pixel information using region growing algorithm;Original defect-free image is synthesized using heating area mask for heating effect, and defect simulation image is generated;Calculate the circumscribed rectangle frame of heating area mask, generate the defect label of defect simulation image, according to defect simulation image and its defect label, generate defect training sample. Expand existing unmanned aerial vehicle power inspection infrared image data sample set.

Provided are a non-contact live detection apparatus and a live detection method. The non-contact live detection apparatus includes a processing unit and a detection unit and an image collection unit which are both communicatively connected to the processing unit. The detection unit includes an electromagnetic wave sensor and at least three ultrasonic sensors. The image collection unit is configured to collect an insulation defect picture of an overhead power line detected by the detection unit. The processing unit is configured to obtain the spatial coordinates, two-dimensional pixel coordinates, electromagnetic wave intensity, and ultrasonic intensity of an insulation defect location according to a detection result of the detection unit and perform identification on the insulation defect picture.

This invention proposes a de-icing robot and its kit for overhead power transmission line ground wires suitable for helicopters, belonging to the field of power transmission line ground wire de-icing technology. To avoid the safety risks of personnel being hoisted on helicopters for de-icing operations, the de-icing robot for overhead power transmission line ground wires suitable for helicopters includes a hoisting mechanism (11) and a robot body (12) connected vertically. The hoisting mechanism (11) includes an outer cylinder (111) and a claw arm (112), which can extend outside the outer cylinder (111) or retract into the outer cylinder (111). The de-icing robot and its kit for overhead power transmission line ground wires suitable for helicopters can take advantage of the advantages of helicopter operating platforms, such as being unrestricted by terrain and having a wide coverage area, while also taking advantage of the safety, high efficiency, and stable performance of de-icing robots.