35 results about "Insulator strings" patented technology

This application provides a method and system for monitoring and alarming the tilt of overhead ground wire suspension insulator strings. The method includes: synchronously acquiring insulator string operating status and environmental data through a multi-sensor acquisition module, including micro-meteorological, tilt angle, infrared image sensors, and a right-angle gate module; performing Kalman filtering, noise reduction, normalization, and LZ77 compression on the data to form a unified feature dataset; real-time anomaly detection and data upload at the edge using a lightweight CNN-LSTM fusion model; and fault type identification and severity assessment via ResNet in the cloud, including accurate displacement calculation; generating early warning information and maintenance suggestions by combining historical data and maintenance strategies, and pushing them through a multi-channel method including tower-side audible and visual alarms and mobile terminal push notifications. This application achieves all-weather, high-precision monitoring, improves the accuracy of anomaly identification and alarm timeliness, ensures the safe operation of transmission lines, and reduces power outage losses.

This invention discloses a testing device for tension insulator strings in high-voltage transmission lines, belonging to the field of power line inspection technology. The device includes a C-shaped semi-enclosed support mechanism, a walking drive mechanism, a defect detection mechanism, and a radial adaptive locking adjustment mechanism. The C-shaped semi-enclosed support mechanism adopts an open frame that can be wrapped around the outside of the insulator string. A radial adaptive locking adjustment mechanism is installed at the opening, and an adaptive flexible fitting component is configured on the inner side to achieve assembly gap compensation and stable fitting. The walking drive mechanism adopts a tracked structure adapted to the insulator contour and is combined with a skirt limiting structure to achieve anti-slip and anti-detachment. The defect detection mechanism integrates visual inspection and electrical parameter detection components, enabling online identification of icing, surface damage, and zero / low-value insulation defects. This invention is easy to assemble, highly adaptable, and provides accurate detection, significantly improving inspection safety and automation levels. It is suitable for online automated inspection of tension insulator strings in high-voltage transmission lines.

This application provides a multi-view detection method and related equipment for the distribution and bridging degree of frost on suspension insulators, belonging to the field of intelligent monitoring technology for transmission lines. The method includes: extracting and registering the foreground of the insulator before and after icing from a group of images taken from multiple perspectives; locating the axial position range of each umbrella unit using the axial gradient distribution features of the ice-free reference image; extracting and quantifying the ice edge using the circumferential gradient saliency features of the iced image; defining and calculating multi-dimensional parameters such as the circumferential / axial distribution non-uniformity of the ice, the bridging degree of local umbrella units, and the overall bridging degree of the insulator string; and finally comprehensively evaluating the uniformity of the icing distribution and the bridging risk level, outputting a quantitative report and operation and maintenance decision recommendations. This application effectively overcomes the detection challenges of variable perspectives and complex lighting conditions in natural scenes through bidirectional gradient feature collaboration and multi-view adaptation mechanisms, providing accurate and reliable technical support for power grid icing prevention and disaster reduction.

This utility model relates to the technical field of surge arresters, specifically a surge arrester for line overvoltage protection, including a surge arrester mounting base, a surge arrester body, an insulator string, and a surge arrester assembly. The surge arrester body is connected to a fixing point on the surge arrester mounting base, and an insulator string is fixed to an external mounting point on the surge arrester body. An insulator string is also provided at a mounting point on the surge arrester assembly. In this utility model, expanding foam is filled inside the plastic cover. The expanding foam can expand and fill the outside of the ceramic ring, connecting ring, and threaded ring, providing anti-collision protection for the ceramic ring, connecting ring, and threaded ring. When the surge arrester terminal is wrapped with rubber, the expanding foam and the plastic cover shield the silicone rubber jacket, preventing cracking and powdering of the transformer inlet terminal under ultraviolet radiation and ozone. The expanding foam and the plastic cover prevent damage to the transformer inlet terminal of the surge arrester.

The application discloses a four-ground-wire lightning protection communication intelligent pole tower, which comprises a pole tower body, a first cross arm, a second cross arm and a third cross arm arranged horizontally from bottom to top on the pole tower body, insulator strings arranged at the lower parts of the two ends of the first cross arm, the second cross arm and the third cross arm, conductors arranged at the lower ends of the insulator strings, two extension arms arranged above the third cross arm, pigeon-type ground wire supports arranged at the top ends of the extension arms, inner side ground wire fittings arranged on the sides of the pigeon-type ground wire supports close to the pole tower body, outer side ground wire fittings arranged on the sides of the pigeon-type ground wire supports away from the pole tower body, inner side ground wires arranged on the inner side ground wire fittings, outer side ground wires arranged on the outer side ground wire fittings, and the height of the inner side ground wires being higher than the height of the outer side ground wires. The four-ground-wire lightning protection communication intelligent pole tower has the advantages that the reasonable arrangement of the four ground wires can obtain more excellent lightning protection performance, and the four ground wires are made of OPGW composite optical cables, so that the communication capacity is improved.

This invention provides a method, system, and storage medium for automated and high-precision batch soft and hard collision verification of transmission line insulator string attachment points based on GIM models. It relates to the field of tension insulator string collision verification technology and includes: identifying all tension insulator string tower attachment points to be tested and their corresponding hardware components from the model; constructing a refined model library; completing the initial import and placement of the refined model; achieving precise alignment of the hardware components with the refined tower attachment point model in spatial position and orientation; driving the refined model from a static installation state to a dynamic spatial state under specific operating conditions; and performing hard collision checks on each inspection unit in the dynamic spatial state. This invention liberates designers from tedious and repetitive work, resulting in an order-of-magnitude improvement in verification efficiency.

The application discloses a high-stability high-low voltage complete switch device, relates to the technical field of high-low voltage complete switch devices, and comprises a transformer body, the top surface of the transformer body being provided with a bottom plate. Three first insulator strings and a rectangular connecting plate are arranged on the top surface of the front side of the bottom plate, and a U-shaped high-voltage wire clamp is installed at the front end of the rectangular connecting plate. Three second insulator strings and an L-shaped connecting plate are arranged on the top surface of the rear side of the bottom plate. A pair of conductive swing arms are hingedly arranged between the L-shaped connecting plate and the rectangular connecting plate, and a third insulator string is hingedly arranged at the middle of each pair of conductive swing arms. An L-shaped contact plate is arranged on the back surface of the L-shaped connecting plate, a U-shaped low-voltage wire clamp is assembled at the rear end of the L-shaped contact plate, and the bottom plate is connected with each L-shaped contact plate through a swing arm mechanism. The application integrates conductive, insulating and transmission structures, is firm in wiring, strong in anti-disturbance capacity, accurate in action response, high in conductive efficiency, good in protection performance, suitable for severe working conditions, low in failure rate, excellent in overall stability, and capable of meeting the long-term reliable use requirement of high-low voltage switching.

The application discloses a high-stability high-low voltage complete switch device, relates to the technical field of high-low voltage complete switch devices, and comprises a transformer body, wherein the top surface of the transformer body is provided with a bottom plate. Three first insulator strings and a rectangular connecting plate are arranged on the top surface of the front side of the bottom plate, and a U-shaped high-voltage wire clamp is installed at the front end of the rectangular connecting plate. Three second insulator strings and an L-shaped connecting plate are arranged on the top surface of the rear side of the bottom plate. A pair of conductive swing arms are hingedly arranged between the L-shaped connecting plate and the rectangular connecting plate, and a third insulator string is hingedly arranged at the middle of each pair of conductive swing arms. An L-shaped contact plate is arranged on the back surface of the L-shaped connecting plate, a U-shaped low-voltage wire clamp is assembled at the rear end of the L-shaped contact plate, and the bottom plate is connected with each L-shaped contact plate through a swing arm mechanism. The application integrates the conductive, insulating and transmission structures, is firm in wiring, strong in anti-disturbance capacity, accurate in action response, high in conductive efficiency, good in protection performance, suitable for severe working conditions, low in failure rate, excellent in overall stability, and capable of meeting the long-term reliable use requirement of high-low voltage switching.

This invention relates to the field of live-line maintenance of high-voltage electrical equipment, and particularly to a live-line insulation cleaning robot system and control method for high-voltage electrical equipment. The method includes: processing scheduling instructions and equipment parameters to obtain safe approach data; controlling the robot to move to the work point, deploying the first robotic arm insulation barrier and collecting working status data to form a safe cleaning zone; acquiring images of insulator strings and identifying the distribution and level of contamination; generating the cleaning trajectory and control data of the second robotic arm; executing the spraying of insulating cleaning fluid, simultaneously collecting leakage current and surface conductivity data and dynamically adjusting cleaning parameters; and retracting the robotic arm and robot based on the live-line data, and generating a maintenance report. This invention, through active insulation barriers and real-time electrical parameter feedback closed-loop control, achieves safe permissioning and dynamic adjustment of the live-line cleaning process, significantly improving the operational safety and intelligence level of live-line insulation cleaning of high-voltage electrical equipment.

This invention discloses a vibration and collision prevention device for tension insulator strings based on multi-degree-of-freedom adjustment. The device is installed between adjacent insulator strings and includes two sets of fixed bases, two sets of hinge assemblies, a buffer assembly, and two sets of limiting assemblies. The fixed bases are symmetrically fixed to the outer walls of adjacent tension insulator strings. The hinge assemblies are fixed to the opposing sides of the two fixed bases and consist of a series-arranged universal ball joint and a rotary hinge joint. The axial ends of the buffer assembly are respectively hinged to the two sets of hinge assemblies. The buffer assembly includes a stroke adjustment unit and a damping unit. The limiting assemblies are located at the axial ends of the buffer assembly, and their limiting stroke matches the extension stroke of the stroke adjustment unit. This device constructs a multi-degree-of-freedom hinge system through the hinge assemblies, preventing additional bending moments from occurring in the insulator strings under vibration conditions. Simultaneously, the buffer assemblies integrate spacing adjustment and damping vibration reduction functions, compressing the device volume, shortening the vibration transmission path, and effectively blocking vibration transmission.

The utility model belongs to high -voltage transmission line detection technical field, and disclose a kind of rotor type strain insulator deterioration detection device, including arched frame and the control system of installation in arched frame surface, travelling mechanism, detection mechanism and guiding mechanism, two groups of rotors of opposite rotation are rotatably installed in the four corners of arched frame, and binocular camera is installed in the middle of the four around arched frame;The detection mechanism includes steering gear installed in the bottom center of arched frame and adjusting frame connected with the output end of steering gear, and the front and rear ends of adjusting frame are connected with sleeve pipe.The above-mentioned scheme solves the problem that the existing device needs to be landed on insulator string during operation, but the surface of insulator string can be approximately regarded as a cylindrical surface, which is not suitable for the landing of the device, and the device has the risk of falling.

This application discloses a support device for supporting insulators of energized transmission lines, belonging to the field of power maintenance equipment. It includes a tower body, with a mounting base fixedly installed on the upper side of the tower body. An insulator string passes through and is installed on the left side of the mounting base. A fixing base is fixedly installed on the lower side of the tower body, and an alarm device is mounted on the right side of the fixing base. In strong winds, the insulator string shakes violently. Under this violent shaking, the insulator string overcomes the elasticity of spring one, pushing a push plate to squeeze hydraulic rod one. Hydraulic rod one retracts, and hydraulic rod two extends, causing a limit rod to extend outward, releasing the limit. A bell on the rotating drum rotates and sounds, alerting workers that the insulator string is shaking violently. This design allows the alarm device to automatically trigger and deactivate based on the degree of shaking of the insulator string, greatly improving the accuracy and timeliness of the alarm.

This invention relates to a quick-cleaning device for the surface contamination of insulator strings in power equipment, comprising a pull rod; a cleaning assembly is provided on the pull rod, the cleaning assembly including a fixing ring, connecting blocks, and cleaning brushes. The fixing ring is disposed on the pull rod, and multiple connecting blocks are evenly distributed circumferentially along the inner ring of the fixing ring. Multiple cleaning brushes are respectively hinged to corresponding connecting blocks via hinge shafts, with the bristles of the multiple cleaning brushes facing the center of the fixing ring. Each cleaning brush of this invention can rotate around the hinge shaft, flexibly changing the range of bristle convergence according to the different diameters of the insulator strings, achieving synchronous cleaning of the insulator strings from top to bottom and left to right, improving cleaning effect and efficiency, and reducing manual labor intensity.

The present application relates to the technical field of power system state monitoring, and provides a power multi-modal data acquisition and processing method and system based on machine learning, which comprises: acquiring ultraviolet images, infrared temperature and sag data of power lines; performing insulator pollution flashover feature fusion and time series prediction through a convolutional neural network and a long short-term memory network, and outputting insulator safety evaluation by using a random forest; performing sag data fusion through Kalman filtering and support vector regression, combining neural network temperature compensation and deep Q network early warning, and outputting sag safety evaluation; and outputting power multi-modal data processing results by comprehensively evaluating the two results. The present application captures the complex time series correlation and fusion features between power multi-modal data through a machine learning algorithm, realizes time series correlation analysis in multi-modal defect identification of power transmission line suspension insulator strings, and realizes multi-sensor data fusion and temperature compensation in overhead transmission conductor sag monitoring.

This utility model discloses a potential tool for tension insulator strings, comprising an insulating crossbar. One end of the insulating crossbar is rotatably connected to an insulating side bar A, and the other end of the insulating crossbar is rotatably connected to an insulating side bar B. Its structure is reasonable. This utility model connects the crossbar side clamp to the insulating crossbar via a rotatable connection from the insulating side bar A, and fixes it at an angle with bolts. The crossbar side clamp is then inserted into the corresponding position on the tower. Using adjustable-length clamps and nuts, it is tightened for fixation. The adjustable-length clamps are applicable to different types of towers, minimizing the possibility of incompatibility and installation failure due to incompatibility with different tower types. This effectively improves the applicability of the potential tool for tension insulator strings.

This invention provides a method and system for configuring icing insulation for insulator strings at ultra-high voltage / extra-high voltage levels. It involves obtaining the flashover voltage of the first insulator string through artificial flashover experiments at different pollution levels and altitudes, determining the altitude correction coefficient for the first insulator string at different altitudes, as well as the flashover voltage and pollution withstand voltage of individual insulator pieces. Then, based on a second correction coefficient, a third correction coefficient, and the pollution withstand voltage, the flashover voltage of individual insulator pieces of the second insulator string at 0 meters altitude under natural conditions is determined. Finally, based on the altitude correction coefficient, system voltage, and the flashover voltage of individual insulator pieces of the second insulator string, the icing insulation configuration of the second insulator string is determined. This method and system are applicable to the design of polluted external insulation in ultra-high voltage / extra-high voltage transmission and transformation projects, significantly reducing the workload of testing and solving the problem of simulating and controlling the icing state of certain insulators.

This invention relates to the field of power equipment condition monitoring and fault diagnosis technology, and provides a method and system for locating porcelain zero-value insulators under non-uniform pollution conditions. The method includes: obtaining the offset distance of abrupt changes in the theoretical axial electric field distribution curve of the insulator string under non-uniform pollution and uncorrected conditions based on finite element simulation software; calculating the ratio of all offset distances to the axial length of a single insulator to obtain a set of insulator disc number correction values; acquiring the actual axial electric field distribution curve of the insulator string; identifying the pollution conditions on the surface of the insulator string; and extracting corresponding correction values ​​from the insulator disc number correction value set according to the non-uniform pollution conditions and the current line voltage level to correct the zero-value insulator location. This method improves the reliability of locating porcelain zero-value insulators under non-uniform pollution conditions.

The application relates to a wind deviation suppression straight-line power transmission tower, which comprises a tower leg, a tower body and a tower head arranged in sequence along a first direction, the first direction being a height direction of the power transmission tower, the tower head comprising: at least one first conductor cross arm, the first conductor cross arm comprising a first hanging point and a second hanging point; at least one first auxiliary cross arm located between the first conductor cross arm and the tower leg in the first direction, a normal projection of the first auxiliary cross arm on a first plane at least partially overlapping a normal projection of the first conductor cross arm on the first plane, the first direction being perpendicular to the first plane, the first auxiliary cross arm comprising a first connecting point; and at least one Y-shaped insulator string, the Y-shaped insulator string comprising three edge connecting ends, the three edge connecting ends of the Y-shaped insulator string being connected with the first hanging point, the second hanging point and the first connecting point respectively. The application can improve the wind deviation suppression capacity of the power transmission tower.

The present application relates to a kind of power engineering overhaul insulator string auxiliary lifting equipment.The technical problem to be solved by the present application is to assist lifting installation of insulator, high-voltage line is affected by wind and shakes, and reduces the probability of insulator pollution flashover.In order to solve the above technical problem, the present application provides a kind of power engineering overhaul insulator string auxiliary lifting equipment, including scissor lift, lifting operation platform, opening and closing control system, line catching system and cleaning system, etc.;scissor lift top is equipped with lifting operation platform.The present application realizes the automatic lifting of insulator, and the outer surface and inner side of insulator are cleaned during lifting process, reduces the possibility of insulator pollution flashover during installation and use process, and for the electric wire that is violently swung by strong sea wind on sea, automatic capture positioning can be carried out, and the effect of insulator installation is facilitated.

The application provides a power transmission line galloping online monitoring and evaluation method and system, the method comprising: based on a distributed clock synchronization algorithm, calculating the phase coefficient between acceleration signals detected by different sensor units in the same span to construct a phase matrix; performing eigenvalue decomposition on the phase matrix to separate galloping modes of different orders according to the size of the eigenvalue, and detecting the phase difference, amplitude ratio and non-linear index of each galloping mode to construct a galloping non-linear feature vector; inputting mechanical load, electric force and magnetostrictive force as boundary conditions to reconstruct the three-dimensional stress field of the conductor, insulator string, fitting and tower; comparing the calculation results with the material allowable stress and fatigue limit of each key part to generate corresponding galloping risk levels and warning information. The application can greatly improve the monitoring and evaluation efficiency of the power transmission line galloping.

This invention discloses a finite element method for finding the shape of a multi-span transmission line based on the BFGS optimization algorithm. The method includes the following steps: discretizing the transmission line with insulator strings using finite element methods to obtain multiple two-node rod elements; defining the endpoints of the two-node rod elements as discrete nodes, and forming a node set based on the multiple discrete nodes; constructing a total potential energy function of the system based on the node set, and using the total potential energy function as the objective function to transform the transmission line shape finding problem into an unconstrained optimization problem; iteratively solving the objective function to output the set of node coordinates that minimizes the total potential energy; calculating the axial stress of each two-node rod element by combining the material parameters and cross-sectional parameters of the transmission line and insulator strings; and using the axial stress and the final set of node coordinates as the finite element shape finding result of the transmission line.

This utility model discloses a non-binding locking device for fixing overhead insulated conductors, relating to the field of conductor fixing technology. It includes an insulation string clamp and a conductor clamp. The insulation string clamp comprises a first clamp and a second clamp, which are fixed opposite to each other on the outside of a first groove in the insulator string. Threaded rods are fixedly connected to the upper surfaces of both the first and second clamps. The conductor clamp is fixed above the insulation string clamp by connecting the threaded rods. High-damping pads are fixedly installed on the front and rear sides of the bottom of the conductor clamp. A nut is threaded onto the outer side of the threaded rod, and a spring washer is provided below the nut. A cotter pin is installed through the upper end of the threaded rod. This non-binding locking device for fixing overhead insulated conductors solves the problems of low efficiency and easy loosening in traditional binding processes, achieving non-binding installation, improving efficiency, and providing excellent vibration resistance. It is suitable for fixing 10kV and below overhead insulated conductors, ensuring the safe operation of power distribution lines.

The present application relates to the technical field of fault prediction, in particular to a kind of meteorological disaster fault analysis method and system of electric power equipment, comprising the following steps: obtaining the real-time wind speed, wind direction and air pressure data acting on transmission line and insulator string, calculating the tension vector and spatial displacement of transmission line under wind load, generating the real-time swing coordinates of the line, and substituting the X-axis, Y-axis and Z-axis components of the real-time swing coordinates of the line into the spatial position analytical matrix.In the present application, the air breakdown voltage threshold under the current environment is calculated by combining real-time air pressure data and applying the Bashen law ionization formula, the grid operating phase voltage is compared with the dynamic physical threshold by difference, the multi-physical field coupling diagnosis logic is constructed by fusing meteorology, mechanics, electromagnetism and insulation physics, the real-time and accuracy of transmission line windage discharge fault diagnosis under complex environment such as strong wind are improved, and the limitation that single electrical quantity monitoring is difficult to represent environment-induced fault is overcome.

The application provides a method for live replacement of a jumper string insulator, comprising the following steps: a tower electrician and an equipotential electrician reach a corresponding work point; two pulleys are hung on both ends of a cross arm, the two ends of a control rope are threaded through the pulleys and extended to the ground, the control rope between the two pulleys is connected with a weight, a ground staff pulls the movable end of the control rope downward, the load at the weight is transferred, and the jumper insulator string is not stressed; a new jumper insulator string is replaced; the old jumper insulator string is removed, and the staff gets off the tower, and the replacement of the jumper insulator string is completed. The pulley block and the weight are used in cooperation, the support of the weight can be completed on the ground, extra staff is not needed to support the weight in the air, the staff at the jumper is reduced, the possibility of accidental collision is reduced, the movable opening of the first insulator is increased, and the old jumper insulator string is conveniently taken off and the new jumper insulator string is conveniently restored.

This invention discloses an insulator zero-value detection device, comprising a mounting frame, a driving unit, a detection unit, and a stabilizing unit. The mounting frame is an inverted U-shaped structure capable of straddling an insulator string. The detection unit includes a zero-value detector mounted on an extension frame, with its signal input terminal electrically connected to a detection head, which is driven to rotate up and down by a flip motor. The stabilizing unit includes two symmetrically arranged top pressure skids, which are connected to an extension frame via two movable columns. The driving unit is a flexible belt drive structure with multiple slide rails evenly distributed on it. Two sliders are slidably connected within each slide rail, and the two sliders are connected to both ends of an auxiliary clamp. Magnetic blocks are provided on the opposite sides of the two sliders, and these magnetic blocks can cooperate with a central plate to control the opening and closing of the auxiliary clamp. This invention addresses the problem in existing technologies where the detection device exhibits poor stability during movement on the insulator string, thus affecting the quality of insulator detection.

The present application relates to the technical field of insulator detection, and particularly relates to a multi-station strength detection device for insulator manufacturing, which comprises a base, a string-type insulator to be detected is arranged above the base, an electric hydraulic rod for tension detection is arranged at the bottom of the string-type insulator, an insulator clamp for clamping is further arranged at the side of the string-type insulator, and a test mechanism for driving the insulator clamp to move is further arranged above the base; the string-type insulator, the electric hydraulic rod, the insulator clamp and the test mechanism are cooperated to drive the insulator clamp and the string-type insulator to rotate synchronously to a specified angle, the inclined use state of the string-type insulator in the actual working condition is accurately simulated, the insulator can be disassembled and replaced through the insulator clamp, the stress condition of the insulator in the on-site replacement process can be simulated, the mechanical strength of the insulator during the replacement operation can be accurately detected, and the strength detection requirement of the insulator in the whole use scene is met.

This invention discloses a method for identifying zero-value insulators based on pollution level correction, belonging to the field of transmission line insulation condition detection and intelligent inspection technology. This method comprehensively considers the pollution level of the target area, insulator string type, voltage level, and local electric field distribution characteristics. It combines dual-probe local electric field detection with a pollution level correction mechanism to achieve accurate identification of zero-value insulators in complex environments. The method includes the following steps: S1: Acquire local electric field data; S2: Calculate the deviation rate η; S3: Detect the pollution level to obtain P; S4: Calculate the correction coefficient Kpoll; S5: Update the deviation rate criterion; S6: Determine whether it is a zero-value insulator. This invention maintains a high accuracy rate in identifying zero-value insulators under different pollution environments, including light, medium, heavy, and extremely heavy pollution, significantly reducing the probability of false positives and false negatives, and exhibiting better environmental adaptability and robustness. The algorithm structure is clear and computationally intensive.