606 results about "Insulator strings" patented technology

The invention discloses an embedded power transmission line insulator chain defect identification method, system and device and a storage medium, and belongs to the technical field of defect identification, and the method comprises the steps: obtaining an insulator chain image, carrying out the insulator chain region positioning of the insulator chain image through color space change and image processing, and obtaining the coordinates of a target insulator chain; based on the target insulator chain coordinate, feature extraction is carried out on an insulator sheet, and an insulator sheet state vector is constructed; judging the state vector of the insulator sheet to obtain a suspected defective insulator list; calculating the insulator sheets in the suspected defect insulator list and detecting the surfaces of the insulator sheets to obtain the defect types and positions of the surfaces of the insulator sheets; and according to the defect type and position, the associated defect type code and description, generating structured power transmission line insulator defect report data, thereby improving the accuracy of defect identification, the fineness of defect classification and the practicability of a result report.

The invention relates to the technical field of electrical equipment defect monitoring, in particular to a high-voltage equipment defect positioning system and method based on multi-modal image fusion, and the system comprises an ultraviolet triggering module, a modal synchronization module, a space positioning module, a structure recognition module and a fusion diagnosis module. According to the method, automatic calibration of a suspected defect area can be realized by performing quantitative threshold judgment on a corona discharge signal in an ultraviolet image, the consistency of three-mode data in space and time dimensions is ensured, and the accuracy of the defect area is improved by comparing three types of coordinates of a lead hot spot, boundary geometry and a spot center in the image and performing registration offset correction. The image feature alignment precision is improved, the insulator chain light spot distribution path is extracted, the continuous distribution length is calculated and corresponds to the pollution level standard, automatic identification of the pollution level is achieved, a multi-modal image fusion feature block is constructed, and a risk sorting label is given. And the defect positioning accuracy and the comprehensive evaluation capability on the defect property and the influence degree are effectively improved.

The invention relates to an ultra-high voltage line lightning resistance level evaluation method and device based on a tower head gap structure. The method comprises the following steps: constructing a simulation model according to line structure information and electrical parameters of an extra-high voltage line and tower structure information of a power transmission tower; inputting lightning current waveform parameters and lightning channel wave impedance parameters of the extra-high voltage line into the simulation model to obtain voltage distribution information and current propagation characteristic information of the extra-high voltage line under a lightning stroke condition; flashover criterion information is determined according to the insulator string discharge voltage characteristic information and the tower head air gap breakdown voltage characteristic information of the extra-high voltage line; and according to the voltage distribution information, the current propagation characteristic information and the flashover criterion information, determining a lightning resistance level evaluation result. By adopting the method, the influence of the breakdown characteristic of the tower head air gap, the complexity of the tower structure and the dynamic characteristic of lightning current propagation on the lightning resistance level evaluation can be comprehensively considered, and the accuracy of the lightning resistance level evaluation result of the extra-high voltage line is improved.

The invention belongs to the technical field of insulator chain production, particularly relates to a power insulator manufacturing and assembling machine and an assembling process, and aims to solve the problems that manual assembling in the prior art is not only low in efficiency but also prone to bumping, the following scheme is provided: the power insulator manufacturing and assembling machine comprises a fixed base which is of a long-strip-shaped structure on the whole; a longitudinal through hole is formed in the middle, close to the feeding end, of the fixed base, a rectangular notch and an installation notch which are communicated with the longitudinal through hole are formed in the middles of the two sides of the longitudinal through hole respectively, a ground rail used for bearing an assembled insulator string is clamped in the installation notch, and a downward pressing mechanism is arranged on the portion, located above the longitudinal through hole, of the upper surface of the fixed base. According to the invention, the clamping mechanism can slide to a place far away from the butt joint pressing station before butt joint, namely during feeding, so that the safety performance is improved, the space of the feeding position is expanded, the collision risk of the insulator disc is reduced, the feeding stage can be replaced by a manipulator, the labor intensity is reduced, and the feeding precision is improved.

The invention discloses a zero-value insulator identification method and system based on multiple sensing modules. Firstly, space electric field probes are arranged in the space where two insulator strings are located, and the detection path of each probe is defined; then judging whether the insulator strings deflect or not by calculating the relative distance difference between the two insulator strings; if not, the space electric field effective value of each detection path at the same moment is collected, and whether a zero-value insulator exists or not is judged by calculating a symmetry judgment value; and if not, independently acquiring the effective value of the space electric field on the corresponding path of the insulator string at a set sampling interval, and judging whether the zero-value insulator exists or not by calculating the electric field deviation rate on each section of sampling path. The zero-value insulator in the insulator string under different postures can be accurately recognized, and the method has the advantages of being non-contact, high in real-time performance, capable of adapting to complex working conditions and the like.

The invention discloses a porcelain insulator zero value detection method based on voltage distribution and a related device. The method comprises the following steps: acquiring voltage effective value data of each insulator to be detected; drawing a curve according to the acquired voltage data of each insulator to be detected by taking the serial number of the insulator as a horizontal coordinate and taking the effective value of the voltage as a vertical coordinate; and analyzing whether a zero-value insulator exists in the to-be-detected insulator string according to the waveform trend of the curve. The step-down circuit with the core device being the capacitor is arranged in front of the input end of the voltage detection device, and the capacitor is connected to the porcelain insulator to be detected in parallel, so that the input voltage is effectively reduced, and the voltage detection device is protected from being damaged by overhigh voltage; the effective value of the measured voltage is obtained, the actual effect of the measured voltage can be reflected more accurately, the calculation process is simplified, and the efficiency is improved.

The invention discloses a multi-modal data fusion-based DC insulator degradation diagnosis method and system. The method comprises the following steps of obtaining infrared image data and current data of a to-be-detected insulator string; constructing an insulator chain model according to the infrared image data, and obtaining the temperature of each insulator according to the insulator chain model and the infrared image data; obtaining the theoretical temperature of each insulator according to the current data; and according to the theoretical temperature of the insulator and the temperature of the insulator, degradation identification of the insulator is realized. Obtaining historical maintenance data of the insulator, constructing a self-adaptive threshold according to the historical maintenance data of the insulator, and performing secondary judgment on a degradation identification result through the self-adaptive threshold; according to the method, the problems of diagnosis one-sidedness, poor environmental adaptability, low degradation positioning precision and the like caused by dependence on a single data source in a traditional method are effectively solved, and the accuracy, robustness and engineering practicability of direct current insulator degradation diagnosis are remarkably improved.

The invention belongs to the technical field of power transmission line operation and maintenance, and particularly relates to a working state live detection device and method for a horizontal insulator string, and the device comprises an unmanned plane, a robot, a robot hoisting mechanism, and a ground control terminal. The robot comprises a saddle-shaped frame, a state detection mechanism, a position recognition module and an axial walking mechanism, the state detection mechanism, the position recognition module and the axial walking mechanism are installed on the saddle-shaped frame, the state detection mechanism is electrically connected with the position recognition module and the axial walking mechanism, the saddle-shaped frame is provided with a balance weight, and the inner space of the saddle-shaped frame is in clearance fit with the outer diameter of an insulator string to be detected. The overall gravity center is lower than the lowest point of the insulator string. When the device is used for measurement, only the unmanned aerial vehicle needs to be controlled to hoist the robot to an insulator chain, the robot can perform self-positioning and complete detection piece by piece, multi-machine cooperative work can be realized, and the device is convenient, rapid and safe. The invention also provides an automatic detection method using the device, a non-transitory readable recording medium storing a program of the method, and a system comprising the medium.

The invention relates to the technical field of zero-value insulator detection, in particular to an iron stepping robot for insulator zero-value detection and a detection method.The robot comprises a core body, leg structures and feet, and the core body is responsible for generating leg control instructions, conducting zero-value detection analysis on insulator voltage and outputting a detection result; each leg structure adopts a three-stage rotating shaft design, wherein a first rotating shaft is connected with the core body to control the robot to move along an insulator string. And the second rotating shaft is used for adjusting leg actions to adapt to insulators at different positions and angles. And the third rotating shaft is connected with the foot and is used for finely adjusting foot actions to ensure accurate contact with an insulator iron cap. And the foot parts are used for clamping an insulator iron cap, stably collecting voltage and transmitting the voltage to the core body for analysis. The robot realizes automation of insulator zero value detection, has the advantages of high detection efficiency, high precision, safety, reliability, strong adaptability and the like, and effectively replaces a traditional manual detection mode.

The invention discloses an insulator protection device, which relates to the technical field of insulators. Dirt such as bird droppings causes the insulator's withstand voltage strength to decrease, resulting in flashover damage. The invention includes an insulator mechanism, an insulator string protection mechanism and an adjustment mechanism, wherein the insulator mechanism includes a support column and an insulator; the insulator string protection mechanism includes a card plate, a connecting rod is fixedly installed between two card plates, and a wind collecting plate clamped between the two card plates, a connecting plate is sleeved on the outside of the connecting rod, and a scraper one and a scraper two matching the insulator are fixed at one end of the connecting plate; the buffer assembly includes a sleeve; the adjustment mechanism includes a transmission plate slidably installed on the wind collecting plate, a guide rail matching the connecting plate is provided on the transmission plate, the transmission plate slides to adjust the distance between a plurality of connecting plates and simultaneously realizes the equidistant adjustment between a plurality of insulators, the wind collecting plate is rotated by wind force, so that the two scrapers rotate around the insulator, thereby limiting the insulator and cleaning its surface at the same time, thereby realizing the protection of the insulator.

The invention discloses a multi-union strain insulator detection device based on unmanned aerial vehicle mounting, which comprises a walking mechanism and a remote controller, the outer wall of the top of the walking mechanism is fixedly connected with a hanging ring, the outer wall of the walking mechanism is fixedly connected with a frame, the outer wall of the frame is fixedly connected with two length-adjustable guide mechanisms, and the length-adjustable guide mechanisms are fixedly connected with the remote controller. The guide mechanism is arranged on the frame and is symmetrical about the frame, the outer wall of the frame is fixedly connected with a mounting support, and the mounting support is located at the bottom of the guide mechanism and is symmetrical about the frame. During use, the unmanned aerial vehicle and the hanging ring are connected through the multiple sections of connecting rods, then the unmanned aerial vehicle is transported to an insulator of a power transmission line in an air mode, the unmanned aerial vehicle can move on the insulator through the walking mechanism, the two layers of detection mechanisms are arranged on the frame, and therefore an upper insulator chain and a lower insulator chain can be detected; in this way, the device can adapt to insulator strings with different diameters, and the device can be more stable during walking through the guide mechanism.

The invention relates to the technical field of power grid detection, in particular to a power grid line fault detection method, and the method comprises the steps: executing a detection program for an insulator string when the environment temperature of the position where the insulator string is located is in a first preset interval, and enabling the temperature change of the insulator string to be directly detected; when the environment temperature of the position where the insulator chain is located is in the second preset interval, a regulation and control program is executed on the insulator chain, the regulation and control program can adjust the environment position of the position where the insulator chain is located to the first preset interval from the second preset interval, and the influence of the environment temperature of the position where the insulator chain is located on the insulator chain is reduced; and thus, the accuracy of power grid line fault detection is improved.

The invention discloses a high-voltage electrical equipment insulator hot-line work robot and a working method, relates to the technical field of electrical equipment, and aims to solve the problem of low manual cleaning efficiency of insulator strings in the prior art. Comprising a base, a clamping assembly, a lifting assembly and an operation assembly, the clamping assembly comprises a clamping rod, a hoop and a clamping driving mechanism, one end of the clamping rod is rotationally connected with the base, the hoop is fixed to the other end of the clamping rod, and the clamping driving mechanism is located on the base to drive the clamping rod to swing; the operation assembly comprises a main guide rail, an operation head, auxiliary guide rails and an air pump, the two ends of the main guide rail are each slidably provided with one auxiliary guide rail, the operation head is slidably connected with the supporting rail, the initial position of the operation head is located in the main guide rail, the arc-shaped inner wall of the operation head is provided with an air hole and a camera, and the air hole is connected with the air pump located on the base through an air pipe; the camera is used for shooting an insulator chain surface image; the lifting assembly is located between the main guide rail and the base. According to the invention, automatic cleaning and detection of the insulator string can be realized.

The present invention relates to the technical field of insulator detection devices, and specifically discloses a high-voltage transmission line insulator safety detection device, including a frame, a lifting assembly is provided on the frame, a first motor is fixedly connected in the frame, a first bidirectional threaded rod is fixedly connected to the output end of the first motor, a first guide rod is fixedly connected in the frame, two moving seats are slidably connected in the frame, a nut seat is fixedly connected inside the moving seat, the nut seat is threadedly connected to the first bidirectional threaded rod, the first guide rod passes through the moving seat, a spacing adjustment assembly is provided at the bottom of the moving seat, and at least two arc frames are provided at the bottom of the spacing adjustment assembly. After being wrapped by the arc frame, it is supported by the walking assembly to walk on an insulator string in a vertical state or an insulator string in a horizontal state, and the resistance of the insulator can be detected by the detection assembly during the walking process.

The invention discloses an unmanned aerial vehicle mounted insulator detection device and a use method thereof. The unmanned aerial vehicle mounted insulator detection device comprises a hanging frame, a driving unit, a detection unit, a stabilizing unit and an auxiliary unit, the hanging frame comprises two center plates and two triple blocks connected with the two center plates, the opposite sides of the two center plates are fixedly connected with extension frames, and the extension frames and the center plates jointly form an inverted-U-shaped structure capable of bestriding an insulator chain; the driving unit is of a flexible belt transmission structure; the detection unit comprises a zero-value detector arranged on the extension frame, and the signal input end of the zero-value detector is electrically connected with a detection needle; the auxiliary unit comprises V-shaped sliding rails arranged at the two ends of the center plate, guide blocks connected to the two slopes of the V-shaped sliding rails in a sliding mode, a supporting shaft fixed to the guide blocks and a friction sleeve rotationally connected to the supporting shaft through a rotating sleeve. The problem that in the prior art, an insulator zero value detection device is large in displacement shaking amount on an insulator chain is solved.

The invention belongs to the technical field of power systems, and discloses an insulator string zero value diagnosis method and system, and the method comprises the steps: analyzing insulator strings of different string types, and determining the voltage distribution conditions of insulators at all positions of the insulator strings under a normal operation condition and a zero value insulator condition; determining the position of the sensitive insulator according to the determined voltage distribution condition; according to the voltage distribution value of the position of the sensitive insulator, determining a luminescence threshold value of an electroluminescent material; and selecting an electroluminescent material according to the luminescence threshold value, carrying out luminescence by using the electroluminescent material according to the voltage change of the sensitive insulator, and determining whether the insulator string to be diagnosed has a zero-value fault according to the luminescence state. According to the invention, the position of the sensitive insulator is searched in the insulator chain of the power transmission line, and the electroluminescent material is applied, so that a single-piece or double-piece insulator alarm function is realized when the insulator chain has a zero-value fault.

The invention discloses a lightning stroke windage yaw coupling risk assessment method for a power transmission line under a strong wind condition. The method comprises the following steps: acquiring meteorological parameters, line parameters and ground-to-ground lightning density; calculating the minimum air gap distance of each base tower under different windage yaw conditions; constructing an insulator string and air gap flashover criterion pilot model based on a pilot method; calculating the minimum wind speed value of the lightning resistance level and the gap flashover of each base tower; the electrical geometric model is improved based on a Monte Carlo algorithm, and the lightning trip-out rate is calculated; and evaluating a line risk level according to a calculation result of the lightning trip-out rate. According to the power transmission line lightning stroke windage yaw coupling risk assessment method under the strong wind condition, the accuracy of lightning stroke risk calculation can be improved, and a reference is provided for power transmission line lightning stroke windage yaw coupling risk assessment.

The invention provides a suspension type porcelain insulator, which is characterized by comprising an insulating body, a steel cap and a steel pin, the steel cap is fixedly connected to the upper portion of the insulation body, the steel foot is installed in the steel cap, and the bottom of the steel foot penetrates through the insulation body. The installation assembly is arranged in the steel cap, the adjusting groove is formed between the two sets of clamping tables, and the adjusting ball head can be placed in the adjusting groove; meanwhile, a fixing piece and an elastic piece are arranged outside the connecting rod, the clamping table is bonded to the bottom of the insulating body through an adhesive, and the steel foot can be steered through a horn groove and an adjusting groove, so that damage caused by overall vibration of the porcelain insulator in the gale weather can be effectively reduced, and after an insulator string is formed, damage to the insulator string is reduced in the gale weather. When a group of porcelain insulators deflect, the porcelain insulators below the group of porcelain insulators are forced to reset vertically under the action of gravity, namely, the porcelain insulators in the insulator string are integrated and are mutually independent, so that the wind resistance of the insulator string is effectively enhanced.

The invention discloses a method and system for detecting a zero-value insulator based on the change degree of electric field intensity, and the method comprises the following steps: generating a detection path position based on the spatial distribution condition of the electric field intensity of an insulator string, obtaining the signal data information of the electric field intensity of the insulator string, and constructing an electric field intensity curve of the insulator string; based on an insulator string electric field model, insulator sheet electric field intensity change feature recognition extraction processing is carried out on the insulator electric field intensity curve, electric field intensity feature extraction processing results of the insulator sheet with the electric field intensity abnormally and suddenly reduced and the adjacent insulator sheet are obtained, and electric field intensity change degree judgment processing is carried out; determining whether the insulator sheet is a zero-value insulator sheet or a low-value insulator sheet; the electric field intensity change degree judgment processing is performed on the insulator string electric field intensity signal data information based on the insulator string electric field model to determine the number of zero-value insulator sheets and low-value insulator sheets so as to judge whether the insulation degree of the insulator string is qualified or not.

The invention discloses a method and a combination tool for live-line installation or replacement of a windage yaw prevention insulator, and relates to the technical field of electric power auxiliary equipment, the installation method comprises the following steps: opening an upper-layer live-line lead, putting down an insulating lifting rope through an insulating fork-shaped pulley rod on a working layer, connecting the insulating lifting rope with an insulating lock rod, and installing a windage yaw prevention insulator on the upper-layer live-line lead. The method comprises the following steps: connecting an insulating lock head rod with an electrified lead of a working layer, tightening an insulating lifting rope, carrying out positioning control on the electrified lead, dismounting and mounting the windage yaw prevention insulator string, and finally repeating the steps to complete replacement of the windage yaw prevention insulator string of the next layer. The windage yaw prevention insulator string can be safely and efficiently installed or replaced, and the working space and the power supply reliability of operators are improved; the safe distance of the live lead can be adjusted, and a safe operation space is provided for operators.

The present application relates to the technical field of high-voltage transmission line operation and maintenance equipment, and in particular to an insulator string thermal deicing and cleaning device, comprising a connecting slide rod, wherein the number of the connecting slide rods is two and they are symmetrically arranged front to back, and the two connecting slide rods are commonly provided with two groups of upper and lower symmetrical clamping mechanisms for locking on the insulator string, the number of each group of the clamping mechanisms is two and they are symmetrical front to back, and the two connecting slide rods are commonly provided with two front to back symmetrical thermal deicing mechanisms for thermally melting the ice on the insulator string. By setting the connecting slide rod and the thermal deicing mechanism, the thermal deicing work can be applied to insulator strings in different setting states, thereby improving the adaptability, so that it is more convenient to perform deicing work on the insulator string, reducing the carrying of adapter equipment, and facilitating the staff to perform deicing work on the insulator string in a special environment in cold weather, so that it is more convenient.

The invention relates to the technical field of insulator string replacement, and provides a visual insulating pull rod for replacing a 110-500kV insulator string and an operation method, and the visual insulating pull rod can be used for replacing a 110-500kV insulator string by monitoring the tension data between a horizontal double-split conductor hook and a rainproof insulating pull rod in real time, and carrying out the preprocessing of the tension data and the overload early warning analysis of the insulating pull rod. The real-time tension value and an insulation pull rod overload early warning analysis result are sent to MR glasses, and the real-time tension value and an insulation pull rod early warning state are displayed through the MR glasses, so that the stress condition of the hot-line work tool is monitored in real time, an operator can conveniently know the stress condition of the hot-line work tool, and equipment damage and personnel injury are avoided; the rainproof insulating pull rod adopts a composite material and a silicone rubber umbrella skirt, so that the insulating property of damp in a humid environment can be improved; the real-time tension value and the early warning state of the insulating pull rod are displayed in the MR glasses, so that an operator can check conveniently, and the operation safety is improved without manually operating equipment.

The invention discloses a pin-removing device for replacing an insulator string at a ground potential. The pin-removing device comprises a main frame, a roller, a rack, an M-shaped pin-removing head and an R-shaped pin-removing head, the roller is rotatably arranged in the main frame; the rack is movably arranged in the main frame and is in meshed connection with the roller; the M-shaped pin removing head is fixed at one end of the rack; and the R-shaped pin removing head is fixed at the other end of the rack. Due to the fact that the M-shaped pin taking head and the R-shaped pin taking head are installed at the left end and the right end of the rack respectively, the problem that a traditional tool is difficult to take out an R-shaped pin needle is solved, and the innovatively developed pin taking device can take out the R-shaped pin easily and rapidly. And meanwhile, the M-shaped pin taking head completes pin taking in the mode that the tail of the pin is pushed forwards, the R-shaped pin taking head completes pin taking in the mode that the head of the pin is pulled reversely, and the two kinds of operation share one torsion transmission stroke and one set of in-place locking hole position. And the tool is simplified and the self-weight is reduced.

The present invention relates to the field of cleaning technology of electric power equipment, and specifically discloses an automatic cleaning device for insulators, comprising a cylinder with two ends transparent and an inner hollow, a wind collection ring for providing driving force is set on the outer surface of the cylinder, a group of cleaning mechanisms are respectively arranged at the two ends of the inner part of the cylinder, a walking mechanism is arranged between the two groups of cleaning mechanisms, the cleaning mechanism and the walking mechanism are both connected with a transmission mechanism, and the transmission mechanism penetrates the side wall of the cylinder outward and is connected with the wind collection ring by transmission; the cleaning mechanism comprises a plurality of groups of centripetal brushes, and the centripetal brushes rotate around the cylinder and move in a straight line along the extension direction of the insulator with the cylinder under the drive of the walking mechanism, so as to realize the spiral cleaning of the insulator surface without dead angle. The device can perform all-round and all-weather cleaning for both insulator strings and post insulators under wind drive, without the need for additional energy supply, and can be used for cleaning post insulators arranged at any angle, transformer outlet conical insulators, and insulator strings.

The invention belongs to the field of insulators, and particularly relates to a porcelain insulator string degradation detection method and system based on radial electric field change, and the method comprises the steps: carrying out the simulation of a three-dimensional electrostatic field model of a porcelain insulator string; obtaining a radial electric field distribution curve of the undegraded porcelain insulator string; obtaining a radial electric field distribution curve when a zero-value insulator exists in the degraded insulator string; comparing the radial electric field distribution curves of the undegraded porcelain insulator string and the degraded porcelain insulator string, and classifying different parts according to a high-voltage end part and a low-voltage end part during comparison; a plurality of simulation comparison data of an undegraded porcelain insulator string and a degraded porcelain insulator string with a zero-value insulator are obtained, a high-voltage end fault or a low-voltage end fault can be distinguished at a time through a radial electric field distribution curve, then the zero-value insulator sheet is positioned through a field intensity difference value, and meanwhile, the zero-value insulator sheet can be accurately positioned. And the degradation degree of the insulator can be analyzed through the field intensity difference value, so that maintenance personnel can know the degradation amplitude of the insulator conveniently, and subsequent maintenance is facilitated.

The invention discloses a broadsword clamp for replacing an LF type yoke plate insulator chain, and relates to the technical field of tools for live-line (power-off maintenance) operation of power transmission lines, the broadsword clamp comprises an LF type yoke plate insulator chain assembly to be replaced and a broadsword clamp clamped on the LF type yoke plate insulator chain assembly, the broadsword clamp comprises a front clamp, a rear clamp, a lead screw assembly and an insulating pull plate, the front clamp is clamped on the equipotential side yoke plate, the rear clamp is clamped on the ground potential side yoke plate, and the front clamp and the rear clamp are connected and tensioned through the lead screw assembly and the insulating pull plate so that the two ends of the insulator string can be released from being tightened, and an operator can conveniently dismount and replace insulators; the acting force originally located on the insulator is transferred to the clamp through the large-knife clamp. Through the design of the broadsword fixture, the efficiency and the safety of replacement operation are improved, meanwhile, the damage to an insulator is reduced to the greatest extent, and a solid guarantee is provided for stable and reliable operation of an electric power system.

This application relates to the technical field of transmission line sensor detection, specifically to an icing galloping detection method and system for power transmission and transformation lines based on optical fiber sensors. The method includes: obtaining the wind speed, wind direction, temperature, and relative humidity at each moment during each acquisition period in the environment where the power transmission and transformation line is located, as well as the tension data of the suspension insulator string connecting the power transmission and transformation line at each moment; calculating the trend change coefficient and wind force influence coefficient for each acquisition period to obtain the meteorological risk coefficient for each acquisition period; determining the galloping risk discrimination value for the current acquisition period; and detecting the icing galloping of the power transmission and transformation line based on the galloping risk discrimination value. This application can accurately evaluate the icing galloping state of the power transmission and transformation line, improve the accuracy of detecting the icing galloping of the power transmission and transformation line, and ensure the safe operation of the power transmission of the power transmission and transformation line.

The utility model discloses a ten-bundle conductor tension string suitable for ultrahigh altitude, which belongs to the technical field of tension strings and comprises two groups of tension string units. The tension string unit comprises two insulator strings which are arranged in parallel at an interval; one end of the insulator string is connected with an iron tower cross arm through the hanging point side fitting, and the other end of the insulator string is connected with a lead through the lead side fitting; the wire side fitting is provided with a shielding ring assembly. The wire side fitting is also provided with a grading ring which is wound on the tension string unit. According to the ten-bundle conductor strain insulator string suitable for the ultrahigh altitude, the structure can ensure that the electromagnetic environment and the air gap of a power transmission line do not exceed the limit under the condition of the ultrahigh altitude, the ecological environment protection requirement is met, and the engineering construction, the economic development and the ecological environment protection are organically combined.

The invention relates to the technical field of power grid data processing, in particular to a power grid digital twinning technology analysis method and system based on AI image recognition, and the method comprises the following steps: collecting a visible light image and an ultraviolet image of an insulator string through a multi-spectral camera carried by an unmanned aerial vehicle, and obtaining line leakage current waveform data at the same time; generating a multi-scale pollution feature matrix; calculating the equivalent resistivity of the polluted conductive path; reconstructing surface electric field distribution of the digital twin based on the equivalent resistivity, and simulating field intensity distortion gradients under different humidity conditions; when the field intensity distortion gradient reaches a preset percentage of the air breakdown field intensity, a graded early warning signal is generated; according to the invention, the electric field distortion of the dirty layer under different humidity conditions is simulated to generate the humidity-field intensity mapping relation, so that whether the insulation performance of the electrical equipment is affected or not can be judged.

The invention discloses an insulator anomaly detection method and system, and relates to the technical field of insulator anomaly detection, and the method comprises the steps: setting an insulator anomaly detection time interval, arranging a sensor for monitoring original temperature data including detection of a target insulator string, and carrying out the processing; gray mapping is carried out on the preprocessed original temperature data, the original temperature data are converted into gray images, and meanwhile, a deep learning model is constructed and trained; and using the trained deep learning model to identify and output an insulator string area in the picture, and judging whether the temperature of the insulator is abnormal or not according to the temperature data of the insulator string area. The method saves the detection time, manpower and material resources each time, can avoid the interference of other irrelevant factors on the judgment, can judge the position of the insulator string more efficiently than manual labeling, and is convenient for temperature anomaly judgment.