456 results about "Composite insulators" patented technology

The invention relates to the technical field of artificial intelligence, and discloses an AI-based composite insulator internal defect ultrasonic detection method, which comprises a multi-mode ultrasonic probe array module, a signal preprocessing module, an AI defect analysis module, a dynamic parameter optimization module, an edge calculation module and a visual report module, the method comprises the following steps: acquiring a full-dimensional signal through a multi-modal ultrasonic probe array, and inputting the full-dimensional signal into a deep space-time convolutional neural network for defect recognition after adaptive noise reduction and feature fusion; the detection precision is improved by combining dynamic waveform matching and multi-physics coupling analysis; model lightweight and real-time processing are realized by adopting transfer learning and edge calculation. The system integrates the functions of parameter adaptive optimization, three-dimensional visualization and Internet of Things cooperation, solves the problems of low efficiency and high false detection rate of a traditional detection method, and improves the intelligent level and engineering applicability of composite insulator defect detection.

The invention provides a joint denoising method and system based on multi-source noise suppression and sparse representation, and belongs to the technical field of noise suppression in ultrasonic detection of power equipment, and the method comprises the steps: synchronously collecting an ultrasonic echo signal, a vibration signal and an electromagnetic signal of a composite insulator; decomposing the ultrasonic echo signal into a plurality of modal components and undecomposed signal margins; extracting a dominant frequency component in the vibration signal, and identifying a resonance noise feature overlapped with the frequency band of the ultrasonic signal; detecting a pulse interference event in the electromagnetic signal, marking occurrence time and a frequency range, and generating a pulse event feature; performing frequency band suppression and time domain threshold processing on the modal component according to the resonance noise characteristics and the pulse event characteristics; performing sparse representation coding on the processed modal components, executing multiple rounds of iterative screening and orthogonalization processing, and screening an atom set matched with defect echoes; and reconstructing the de-noised ultrasonic signal by using the screened atom set, and combining the de-noised ultrasonic signal with the undecomposed signal margin to output a final result.

The invention relates to the technical field of composite insulator detection, in particular to an autonomous recognition method and system for typical defects of an ultrahigh-voltage line composite insulator, and the method comprises the steps: collecting an inspection image of the ultrahigh-voltage line composite insulator; calculating a temperature rise characteristic coefficient by using the color characteristics in the visible light image and the infrared image and the relationship between the color characteristics and the environment humidity; calculating a defect identification coefficient in combination with the spatial characteristics of the temperature rise phenomenon of the composite insulator; and finally, detecting and identifying typical defects of the composite insulator by utilizing the defect identification coefficient. The invention aims to improve the recognition quality of the typical defects of the composite insulator of the ultrahigh-voltage line.

The invention discloses a composite insulator defect detection method and system based on a multi-source signal and VMD decomposition, and the method is characterized in that the method belongs to the technical field of power system and equipment monitoring, and comprises the steps: synchronously collecting an ultrasonic echo signal, a mechanical vibration signal and an infrared thermal image signal of a composite insulator, and carrying out the timestamp alignment; performing CEEMDAN denoising and VMD decomposition on the ultrasonic echo signal in sequence to extract time-frequency domain features, and generating an ultrasonic feature vector; performing frequency domain transformation on the mechanical vibration signal to extract fundamental frequency and harmonic characteristics, and generating a vibration characteristic vector; performing surface temperature abnormal feature extraction on the infrared thermal image signal to generate an infrared auxiliary feature vector; the ultrasonic feature vector, the vibration feature vector and the infrared auxiliary feature vector are spliced into a fusion feature vector, and after dynamic weight distribution, the fusion feature vector is input into a multi-layer perceptron model for defect classification; and analyzing and positioning the internal defect position of the composite insulator by combining the ultrasonic signal propagation path time delay and the vibration mode, and generating a three-dimensional visual report.

The invention discloses a global optimization design method and device for a glue injection opening of a composite insulator umbrella skirt sheath injection molding mold, electronic equipment and a storage medium, and belongs to the technical field of mold optimization design. Establishing a composite insulator umbrella skirt sheath injection molding mold physical model; determining the number of glue injection ports; the position of the glue injection port is parameterized, and the value range of the position parameters of the glue injection port is determined; sampling is carried out within the value range of the glue injection port position parameters; determining boundary conditions of a glue injection process, and establishing a sample library; establishing a mapping model of glue injection port position parameters and glue injection result parameters, and evaluating model precision; the position of a glue injection opening is optimized; simulation calculation is conducted on the model containing the glue injection pipeline, pipeline arrangement is adjusted according to the time when the glue in the pipeline reaches the glue injection opening, and it is guaranteed that the time when the glue reaches the glue injection opening is consistent. According to the method, the number of numerical simulation times can be greatly reduced, then the optimal design process of the glue injection opening position is remarkably accelerated, the design period is shortened, and the design cost is saved.

The invention discloses an infrared image composite insulator heating defect identification method and system under a complex background. The method comprises the following steps: S1, obtaining a composite insulator infrared image; s2, performing image segmentation on the infrared image of the composite insulator to obtain a composite insulator rod core area mask; s3, performing temperature decoding on the infrared image source data of the composite insulator to obtain a temperature data matrix corresponding to each pixel; s4, extracting corresponding temperature data from the temperature data matrix based on the composite insulator rod core area mask to obtain a rod core mask matrix with temperature; and S5, carrying out temperature rise difference analysis on the rod core based on the rod core mask matrix, and carrying out heating abnormity judgment and temperature rise defect range determination based on the temperature rise difference analysis. According to the scheme, the reference value is determined through the mean value by utilizing the characteristics that the temperature distribution of the rod core is relatively uniform under the normal condition and the temperature distribution is not uniform under the abnormal condition, so that the influence of the environment on temperature rise analysis can be avoided, the influence of individual abnormal data can be overcome, and the judgment precision is ensured.

The invention relates to a lightning protection composite insulator insulation cooperation detection and structure optimization method based on digital twinning. The method comprises the following steps: obtaining a structure parameter, a real-time environment parameter and an operation electrical parameter of a lightning protection composite insulator to be detected; constructing a digital twinborn simulation field domain model; establishing a preliminary digital twinborn simulation platform; obtaining an updated preliminary digital twinborn simulation platform; establishing an insulation cooperation equivalent model to obtain an optimized design scheme; and carrying out real-time monitoring and early warning on the insulation cooperation condition of the lightning protection composite insulator according to the insulation cooperation equivalent model. According to the invention, the insulation state of the insulator and the lightning arrester can be monitored in real time, real-time tracking of the insulation performance is realized, and once the insulation performance is abnormal, early warning can be immediately given out to remind operation and maintenance personnel to take measures in time, so that equipment faults or safety accidents caused by insulation failure are effectively avoided; performance bottlenecks and potential problems of the equipment can be found in time, and targeted maintenance suggestions are provided for operation and maintenance personnel.

The invention discloses a power transmission line anti-galloping phase-to-phase spacing device, which belongs to the technical field of power transmission lines, and is characterized in that two connecting plates, two connectors, two cross universal joints and two rod type composite insulators are arranged between two adjacent six-split damping spacers; each connecting plate is connected with a cross universal joint through a connector, and the cross universal joints are further connected with the ends of the rod type composite insulators. A hydraulic shock absorber is arranged in the middle of the two rod type composite insulators; a damping ball is arranged in the center of a triangle formed by the rod type composite insulators; an outer viscous damper, a first connecting rod and a second connecting rod are arranged between the hydraulic shock absorber and the damping ball; the first connecting rod and the second connecting rod are connected to the two sides of the outer viscous damper respectively, the damping ball is connected with the first connecting rod, and the hydraulic shock absorber is connected with the second connecting rod through the connecting ferrule. The problems that in the prior art, under the long-time line use condition, wires are damaged, the safety of a power transmission line is affected, and cost is high are solved.

The invention discloses an edge end composite insulator heating defect judgment system, device and method. The method comprises the following steps: receiving an infrared picture heating detection request from a handle of the unmanned aerial vehicle through an infrared image acquisition module; the model training conversion module is used for training and converting a composite insulator image detection segmentation model; the composite insulator detection module is used for automatically identifying and positioning a target of a composite insulator; the composite insulator segmentation module extracts a complete shape contour of the composite insulator; the composite insulator center line extraction module is used for extracting the center line of a composite insulator core rod; a composite insulator center line temperature fitting extraction module extracts a corresponding temperature value; and the composite insulator heating defect detection module judges the heating condition of the corresponding composite insulator. The method has the beneficial effects that the heating defect identification of the unmanned aerial vehicle infrared picture of the power transmission line at the edge end of the inspection site is realized, and the intelligent and automatic level of the heating defect detection of the composite insulator of the power transmission line is improved.

The invention relates to the technical field of insulators, and discloses an extra-high voltage icing flashover prevention composite insulator which comprises a core rod, a first umbrella skirt, a second umbrella skirt, a third umbrella skirt and connecting fittings, the first umbrella skirt, the second umbrella skirt and the third umbrella skirt are distributed at intervals in the axial direction of the core rod, and the connecting fittings are arranged at the two ends of the core rod; the radial size of the first umbrella skirt is larger than that of the second umbrella skirt, the radial size of the second umbrella skirt is larger than that of the third umbrella skirt, one first umbrella skirt, at least one second umbrella skirt and at least one third umbrella skirt form an umbrella skirt group, and the first umbrella skirt is located at the upper part of the umbrella skirt group; the first umbrella skirt is provided with a bulged surface with a high middle and a low periphery, the bulged surface is convexly provided with a plurality of diversion ribs, each diversion rib is provided with a first end and a second end, and the diversion ribs are arranged obliquely to the radial direction of the first umbrella skirt; the projections of the plurality of diversion ribs of two adjacent first umbrella skirts in the radial cross section are distributed at intervals in the circumferential direction. Water can be quickly drained, icing is reduced, ice ridge bridging is inhibited, and the device is suitable for extra-high voltage re-icing scenes.

The invention discloses a composite insulator fault detection method based on YOLOV8, and relates to the technical field of graphic data reading, and the method comprises the steps: synchronously collecting an infrared image and a visible light image of a composite insulator, taking the infrared image and the visible light image as dual-mode images, carrying out the cooperative preprocessing, obtaining a registered dual-mode image, and generating a significance hot area graph; constructing an improved target detection network, and inputting the registered bimodal image into the improved target detection network to obtain a detection result of the composite insulator and a pixel-level contour of a fault area; obtaining a final overheating grade based on a physical mechanism diagnosis model, and calculating an intensity loss rate estimated value of a current fault based on a pixel-level contour of a fault area; and generating and outputting a structured diagnosis report based on the fault type, the absolute temperature data matrix, the final overheating level, the strength loss rate estimated value and the fault area pixel level contour. According to the invention, the technical problem of poor detection effect caused by incomplete composite insulator fault detection in the prior art is solved.

The invention discloses a forming method of a high-bending-strength composite insulator winding pipe, which comprises the following steps: firstly, an inner layer structure of the insulator winding pipe is prepared by a pultrusion process, the inner layer structure is cylindrical, the outer diameter of the inner layer structure is matched with the inner diameter of the winding pipe, and a plurality of uniformly distributed cambered surface bulges are formed on the surface of the inner layer structure; a reinforced interface layer is formed on the outer wall of the inner layer structure, is formed by aramid fiber preform fabric, and is treated by a modified epoxy glue solution by adopting a three-dimensional orthogonal weaving process; the interface layer is tightly attached to the inner layer structure, epoxy / polyurethane glue liquid is coated outside the interface layer, and a semi-finished winding pipe product is formed; the winding pipe semi-finished product is subjected to pre-curing treatment, a small number of uncured groups are reserved, external packaging is conducted through an injection molding method, a winding pipe blank with an outer layer structure is obtained, and the outer diameter of the winding pipe blank is matched with that of the finished product; and demolding the winding pipe blank, fettling and carrying out quality inspection to obtain a finished product of the high-bending-strength composite insulator winding pipe. The method can remarkably improve the mechanical strength and durability of the winding pipe, and has wide application prospects.

The invention discloses a method and a system for predicting the service life of an anti-ultraviolet aging composite insulator, and relates to the technical field of composite insulators. The method comprises the following steps: collecting product information of a to-be-evaluated anti-ultraviolet aging composite insulator, determining the corrected predicted life of the to-be-evaluated anti-ultraviolet aging composite insulator based on the product information, and predicting the service life of the to-be-evaluated anti-ultraviolet aging composite insulator based on the corrected predicted life of the to-be-evaluated anti-ultraviolet aging composite insulator. The method comprises the steps of determining an appearance state comparison value of a to-be-evaluated anti-ultraviolet aging composite insulator, determining a microscopic state comparison value of the to-be-evaluated anti-ultraviolet aging composite insulator, determining a comprehensive state value of the to-be-evaluated anti-ultraviolet aging composite insulator, and determining an actual predicted life of the to-be-evaluated anti-ultraviolet aging composite insulator based on the comprehensive state value. The problems that in the prior art, service life prediction is insufficient in accuracy, influences caused by environmental factors are not fully considered, and the service life prediction is lack of comprehensiveness are solved.

The invention relates to the technical field of image fusion, in particular to a multispectral channel image space alignment fusion method and device for avoiding image dislocation, and the method comprises the steps: collecting to-be-detected images of a composite insulator on different spectral channels on a power transmission line, and extracting an edge contour corresponding to the composite insulator in each to-be-detected image; angular points of the edge contour are extracted, and response values of all the angular points are obtained; obtaining symmetrical angular points corresponding to the angular points; calculating the saliency of each angular point; obtaining each matching point corresponding to each angular point, and determining the defect degree of each matching point; determining the matching degree of each angular point; and obtaining the feature responsivity of each corner point, screening all corner points in each to-be-detected image, extracting the feature points of each to-be-detected image, and performing image fusion. According to the method, the feature point matching precision can be improved, the efficiency and precision of multi-spectral channel image space alignment fusion are improved, and the image fusion effect is improved.

The invention relates to the technical field of external insulating materials for power equipment, in particular to silicone rubber, a preparation method thereof and application of the silicone rubber in a composite insulator. The silicone rubber is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber raw rubber, 5-20 parts of hydrophobic silicon dioxide aerogel powder, 3-15 parts of conductive and heat-conducting filler, 10-30 parts of modified aluminum hydroxide, 15-35 parts of fumed silica, 1-3 parts of a silane coupling agent and 2-5 parts of a structuring control agent, 1-4 parts by weight of a low surface energy auxiliary agent, and 0.5-2 parts by weight of a vulcanizing agent. The silicone rubber provided by the invention integrates long-acting hydrophobic anti-icing, active low-power-consumption ice melting and excellent arc ablation resistance, has long-term stability, and is especially suitable for high-voltage insulators in severe environments such as heavy ice areas and heavy dirty areas.

The invention discloses a composite insulator large cluster parachute heating defect judgment interference suppression method. The system comprises an infrared image acquisition and preprocessing module, a composite insulator target detection and positioning module, a composite insulator temperature field analysis module, a large umbrella group reflection area identification module, a composite insulator central axis reconstruction module and a heating defect intelligent diagnosis and interference suppression module. Complex infrared image analysis is converted into refined analysis of a temperature field and geometric features, and meanwhile, a strategy of combining deep learning and morphology is introduced to improve the precision of target detection and segmentation and ensure the robustness of central axis reconstruction and interference suppression. The method has the beneficial effects that the false alarm rate can be obviously reduced, the detection accuracy of the real heating defect is improved, the result is highly consistent with the interpretation result of an artificial expert, the processing efficiency is high, and the method is suitable for a large-scale unmanned aerial vehicle inspection scene.

The invention discloses a composite insulator linear dimension laser measuring device, and relates to the technical field of laser measuring devices, the composite insulator linear dimension laser measuring device comprises a support frame, an electric control slide rail is fixedly installed between two ends of the top of the support frame, and a laser measuring instrument is slidably connected in the electric control slide rail; through the arrangement of the arc-shaped gear ring and the arc-shaped limiting frame, the device can be adapted to the surface clamping of the composite insulators with different end shapes, and can be tightly attached to the ends with different shapes, so that the composite insulators are kept at stable positions and postures in the measurement process, and are prevented from shaking or shifting, thereby ensuring the accuracy and repeatability of laser measurement. According to the technical scheme, the clamp can be used for accurately positioning insulators with irregular ends, measuring errors caused by position changes can be avoided, in addition, the clamp can be suitable for composite insulator ends of various different shapes and specifications, reliable clamping can be achieved for round, square or other special-shaped ends, diversified measuring requirements are met, and the clamp is suitable for large-scale popularization and application. And the application range and the universality of the clamping device are improved.

The invention discloses a composite insulator wear degree evaluation method and system based on multi-source information weighted fusion, and relates to the technical field of power equipment state monitoring. The method mainly comprises the following steps: acquiring a plurality of mechanical and electrical performance parameters representing the wind-sand erosive wear degree of the composite insulator, calculating a weight coefficient of each performance parameter by adopting an entropy weight method, and calculating a comprehensive wear index by utilizing the weight coefficients. And according to the comprehensive wear index, a wear degree grade is established, and quantitative evaluation of the wear state of the composite insulator is realized. According to the invention, the mechanical and electrical performance degradation condition of the insulator can be comprehensively reflected, and a scientific basis is provided for safe operation and maintenance decision of a power grid.

The invention relates to the technical field of insulators, and discloses an AC rod-shaped suspension type composite insulator and a preparation method thereof, and the preparation method comprises the following steps: mixing and stirring an umbrella skirt raw material and a reinforcing material to obtain a premix, mixing the premix to form a rubber compound, and vulcanizing the rubber compound to obtain an umbrella skirt; after the hardware fitting flanges are connected to the upper end and the lower end of the core rod in a pressing mode, the surface of the core rod is coated with an insulator adhesive, the core rod is covered with the umbrella skirts, and the composite insulator is obtained through compaction and drying. The umbrella skirt raw material and the reinforcing material are mixed to serve as an insulator umbrella skirt which is adhered to the core rod, and the prepared alternating-current rod-shaped suspension type composite insulator has excellent mechanical strength, hydrophobic performance, heat-resistant stability and insulating performance.

The invention relates to the technical field of insulator casting, in particular to an adjustable combined insulator casting device. Comprising an adjustable casting device and a discharging mechanical arm arranged on the discharging side of the adjustable casting device, and further comprises a treatment box. The side part of the treatment box is provided with a connected film treatment mechanism, and the connected film treatment mechanism is used for removing connected films among the umbrella skirts and blowing the umbrella skirts; core rod driving mechanisms are arranged on the two sides of the treatment box, and the core rod driving mechanisms are used for clamping the two sides of the core rod and driving the core rod to rotate in the axial direction; a core rod clamping mechanism is arranged at the execution end of the unloading mechanical arm; according to the invention, the technical problem of how to realize automatic unloading and coating film removal of the composite insulator is solved.

The invention belongs to the field of intelligent inspection of power equipment, and particularly relates to a transformer substation unmanned aerial vehicle dual-light inspection route planning method. According to the method, original laser point cloud of substation equipment is simplified, an equipment semantic lattice diagram containing high-altitude environment attributes and equipment semantic tags is constructed, dual-light inspection constraint parameters, namely infrared temperature precision and visible light resolution, are analyzed, and a semantic-environment dual-constraint initial route is generated; and flight and dual-light equipment parameters are dynamically adjusted in combination with a high-altitude environment, and routing inspection coverage completeness and data qualification are ensured through semantic weight driven dynamic obstacle avoidance and dual-light data quality closed-loop verification. According to the method, the route coverage is larger than or equal to 99%, the dual-light data qualification rate is larger than or equal to 95%, the redundant route mileage is reduced by 30%, the method is adaptive to a high-altitude transformer substation suspension type porcelain insulator and composite insulator dual-light inspection scene, and high-quality data support is provided for joint detection of insulator infrared thermal defects and visible light surface defects.

The present invention provides an intelligent gripping and wire clamp mounting device for a fully automatic drainage operation, and an operation method. The device comprises: a wire clamp body, used for fixing a drainage wire; a wire clamp fixing mechanism, used for fixing and positioning the wire clamp body; a wire clamp gripper, used for gripping the wire clamp body from the wire clamp fixing mechanism and connecting the wire clamp body to an electrified cable to complete a drainage operation; and an operation platform, connected to the wire clamp gripper and providing electrical power for the wire clamp gripper. According to the present invention, during use, the wire clamp fixing mechanism is mounted on a composite insulator of a cross arm of a 10 kV pole and tower, the design of the wire clamp fixing mechanism can safely fix a drainage wire clamp for a long time, and is suitable for a complex severe weather environment, and manual deployment and automatic robot gripping are facilitated. According to the wire clamp gripper of the present invention, a pneumatic motor serves as a driving force device for tightening a screw, and a pneumatic push rod serves as a power device of the wire clamp gripper. Mutual decoupling is achieved, electromagnetic interference is avoided, the electric insulativity is high, the cost is low, and technical popularization is easy. An operator is far away from an electrified cable, so that the electrical shock risk is reduced. The labor intensity is reduced, and the operation efficiency is improved.

The invention relates to the technical field of insulator forming, and particularly discloses a composite insulator umbrella skirt vulcanization forming device which comprises a base, an upper die holder and a lower die holder are arranged on the base, the lower die holder can ascend and descend on the base, a plate body is arranged in the lower die holder, a wing plate is arranged on the plate body, and the wing plate is arranged on the lower die holder. The lower die holder can descend relative to the plate body when approaching the upper die holder, and can ascend relative to the plate body when being far away from the upper die holder; according to the composite insulator umbrella skirt vulcanization forming device, through adjustment of the material frame, when the lower die base descends, a formed insulator is automatically sent out from the position between the upper die base and the lower die base, discharging of the insulator is well carried out, the trouble of manual carrying is omitted, and when the lower die base is lifted, the material frame is not prone to falling off. And a new insulator core rod is automatically fed between the upper die holder and the lower die holder, so that a new round of vulcanization forming operation of an insulator umbrella skirt is facilitated, the insulator core rod is better fed, and the insulator processing efficiency is improved.

The invention discloses a lightning arrester test system and test method, the test system comprises a test chamber and a conveying mechanism, and the conveying mechanism can convey a to-be-detected lightning arrester to the test chamber and transfer the detected lightning arrester from the test chamber to a designated position; the test chamber comprises a test area and a control room. The test area is internally provided with a test power supply, a lifting assembly, a high-voltage contact grading ring, a composite insulator, a binding post contact cylinder, a power frequency test device, a continuous current test device and a partial discharge test device. The test power supply is connected with the high-voltage contact grading ring through the control circuit; the high-voltage contact grading ring is connected with the lifting assembly through a composite insulator; and the binding post contact cylinder is connected with a control circuit. A control assembly is arranged in the control chamber and can generate a test report according to test data, and the conveying mechanism and the lifting assembly are both connected with the control assembly. According to the lightning arrester test system disclosed by the invention, the working efficiency is improved, and the labor intensity of workers is reduced.

The invention discloses a method for detecting the water absorption rate of silicone rubber by combining near infrared spectroscopy with CPO-SVM, and belongs to the technical field of detection of high- The invention aims to solve the problems of destructive sampling, complex operation, sensitivity interference, strong subjectivity of indirect evaluation and the like in the traditional detection method. The method comprises the following steps: firstly, obtaining a composite insulator silicone rubber sample, and collecting near infrared spectrum data of the composite insulator silicone rubber sample; then, carrying out standard normal variable transformation pretreatment on the spectroscopic data to eliminate interference caused by physical property difference on the surface of the sample; then, accurately extracting a key wavelength from the high-dimensional spectral data by using a competitive self-adaptive reweighting algorithm; and finally, establishing a support vector machine model optimized by a crown porcupine optimization algorithm, and carrying out quantitative analysis on the water absorption rate of the silicone rubber. According to the method, rapid, accurate and nondestructive detection of the water absorption rate of the silicone rubber is realized, real-time and reliable data support is provided for operation and maintenance of a high-voltage insulating material, safe and stable operation of a power grid is effectively guaranteed, and the method has a wide application prospect.

The invention relates to the technical field of electric transmission line electrical insulating materials, in particular to a modulus gradient epoxy resin based composite insulator and a preparation method thereof. The sheath is divided into a plurality of layers, and each layer is formed by a resin mixture obtained by mixing an epoxy resin matrix and an inorganic filler; the epoxy resin matrix at least comprises epoxy resin and a curing agent; in a plurality of layers of the sheath from outside to inside, Young modulus is distributed in a gradient decreasing manner, and elongation at break is distributed in a gradient increasing manner; the adjacent sub-layers of the sheath form a nonlinear interface profile. The composite insulator provided by the invention has excellent tracking resistance, excellent tensile property and excellent gradient structure interface performance.

The invention relates to the technical field of image feature extraction, in particular to a composite insulator multispectral feature extraction method and device considering corona characteristics, and the method comprises the steps: collecting a multispectral image of a composite insulator, and carrying out the registration and fusion of the multispectral image, and obtaining a composite image; extracting an insulator image in the composite image; for any connected domain in the insulator image, whether the connected domain is subjected to corona change or not and whether the connected domain is influenced by sunshine or not are analyzed according to brightness differences, texture features and time sequence change features of the same connected domain in HSV spaces of visible light, infrared and ultraviolet images, and according to the time sequence change features of the connected domain influenced by sunshine; and further analyzing the key feature region of the composite insulator so as to extract the key feature region which is greatly influenced by the corona phenomenon in the insulator image. The invention aims to effectively eliminate the interference of environmental factors such as sunlight irradiation, thereby improving the accuracy and reliability of corona detection.

The invention discloses an insulator quality detection device with an intelligent clamping function, and relates to the technical field of electric power equipment detection.The insulator quality detection device comprises a detection box, a driving unit, an anti-movement unit, an intelligent clamping unit and a composite insulator, and the detection box is used for installing and fixing the driving unit, the anti-movement unit, the intelligent clamping unit and the composite insulator; the driving unit is used for providing torsional force, the anti-movement unit is used for preventing axial movement of the composite insulator in the test process, the intelligent clamping unit is used for clamping the composite insulator, and after the composite insulator is clamped and fixed through the intelligent clamping unit, the torsional force is provided through the driving unit for torsion test. Through the anti-play unit, the composite insulator is prevented from axial play in the rotation process, and the situation that the axial play introduces extra friction force and changes the stress state, and consequently the measured torque value is not pure, and the test result is not accurate is avoided.

The utility model discloses a hollow composite insulator convenient to install, and relates to the field of hollow composite insulator devices, the hollow composite insulator comprises a hollow composite insulator main body and a support frame, and the hollow composite insulator main body is fixedly installed at the top of the support frame through an installation assembly. According to the hollow composite insulator, the supporting plate is installed at the bottom of the hollow composite insulator body, the contact area between the bottom of the hollow composite insulator body and the supporting frame can be increased through the supporting plate, the force distribution can be more uniform by increasing the contact area between the hollow composite insulator body and the supporting frame, and the connection stability is enhanced; when the core rod is subjected to external force, the force can be better transmitted to the supporting frame through the supporting plate, the situation that local pressure of the hollow composite insulator body is too large can be reduced through the supporting plate, and deformation or damage caused by local stress concentration of the hollow composite insulator body and the supporting frame is avoided. And the strength of the hollow composite insulator after integral installation is improved.