38 results about "High voltage insulators" patented technology

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 high-voltage porcelain insulator cleaning device and method with a multi-shaft cleaning ring, and belongs to the technical field of porcelain insulator cleaning. The high-voltage porcelain insulator cleaning device comprises a movable bearing unit, a cleaning medium supply unit, a multi-shaft cleaning unit and a control unit; the control unit and the cleaning medium supply unit are arranged on the movable bearing unit; the multi-axis cleaning unit is installed at the operation end of the movable bearing unit, and the multi-axis cleaning unit has multi-dimensional stretching and rotating adjustment degrees so as to adapt to cleaning of porcelain insulators at different positions and angles; the cleaning medium supply unit is communicated with the multi-shaft cleaning unit to supply a cleaning medium; the control unit is electrically connected with the cleaning medium supply unit and the multi-axis cleaning unit and used for receiving the detection signals and outputting control instructions. The problems that in an existing outdoor high-voltage porcelain insulator cleaning mode, the high-altitude operation safety risk is high, the operation efficiency is low, and cleaning of an asparagus area is not thorough can be effectively solved.

The invention provides a method and device for preventing pollution flashover of a high-voltage insulator in a humid and hot environment, and the method comprises the steps: obtaining an insulator surface image, leakage current, environment temperature and humidity, and rainfall data in real time through a multi-dimensional monitoring module; carrying out feature fusion processing on the multi-source data, and judging the pollution grade and the pollutant type of the insulator based on a pre-trained lightweight convolutional neural network and gradient boosting tree fusion model; according to the pollution grade and the pollutant type, the pressure of an air pump, the rotating speed of a brush and a cleaning mode are dynamically adjusted through a self-adaptive active cleaning module, and combined type cleaning operation is executed; and after cleaning is completed, the insulator state data are collected again, and if the pollution grade is not reduced to the preset threshold value, a secondary cleaning instruction is generated and early warning information is reported. According to the invention, accurate monitoring and self-adaptive active cleaning of the dirty state of the high-voltage insulator in the humid and hot environment can be realized, the anti-pollution flashover reliability is obviously improved, the pollution flashover risk is reduced by more than 90%, and the operation and maintenance cost is reduced by 40-50%.

The utility model discloses a connecting rubber sleeve for a high-voltage insulator, and the rubber sleeve comprises a sealing part which is disposed at the inner side of the connecting rubber sleeve, and is attached to the surface of the insulator; the outer side part and the sealing part are of an integrated structure; and the reinforcing part is arranged between the sealing part and the outer side part and is used for supporting the sealing part and the outer side part. The connecting rubber sleeve for the high-voltage insulator, provided by the embodiment of the utility model, is divided into the sealing part and the reinforcing part, and the reinforcing part is additionally arranged between the sealing part and the reinforcing part, so that the mechanical strength and durability of the connecting rubber sleeve are improved, and a sealing surface is formed between the sealing part and the surface of the insulator in the connecting / fixing process of the connecting rubber sleeve and the connecting rubber sleeve; therefore, the condition of discharge and / or short circuit of the insulator is effectively overcome, and meanwhile, as the reinforcing part is added, the stable support of the insulator can be ensured.

The invention relates to the technical field of high-voltage insulator detection, and provides a high-voltage insulator transverse crack laser ultrasonic non-contact detection method which comprises the following steps: step 1, building a detection system which comprises an industrial personal computer, a pulse laser, a light path system, an ultrasonic receiving system and a scanning system, the pulse laser and the ultrasonic receiving system are in two-way communication with the industrial personal computer through optical fibers, the optical path system is fixed to the scanning system, and the scanning system receives control signals of the industrial personal computer through an industrial bus. And 2, outputting a synchronous trigger signal by the industrial personal computer, and controlling the pulse laser to emit nanosecond laser with the wavelength of 1064nm. Live detection is realized through a non-contact design, and a blind area of a compact insulator is eliminated; the efficiency is improved by means of collaborative scanning, and batch standardized detection is met; the multi-modal fusion and standardization algorithm improves the recognition precision and realizes quantitative detection, the method can also adapt to the outdoor environment to reduce the misjudgment rate, and an efficient, accurate and reliable detection scheme is provided for power grid operation and maintenance.

The invention discloses an extra-high voltage direct current porcelain insulator with an optimized multi-umbrella-skirt structure, and relates to the technical field of high-voltage power transmission, and the insulator comprises a solid porcelain insulator body, a metal flange assembly fixed at the bottom of the solid porcelain insulator body, and a screw assembly for fixing the flange assembly on a mounting table. The screw rod assembly comprises a central screw rod and peripheral screw rods which are annularly arranged, the self-adaptive radial reinforcing assembly is further included, the extension section of the screw rod is sleeved with an abutting sleeve, a folding mechanism which is initially in a V shape is hinged between the abutting sleeves, and the folding mechanism is connected with the metal flange assembly through a hanging rod; the flange assembly pulls the folding mechanism to be flattened through the hanging rod, the abutting sleeve is driven to apply radial thrust to the screw rod, the screw rod is deformed to increase the locking force, and passive self-locking is achieved. According to the invention, the problem that the bottom connection of the extra-high voltage insulator is easy to loosen and age under large-tonnage tension is effectively solved, and the anti-pulling performance is obviously improved.

The invention discloses a high-voltage insulator capable of avoiding a corona discharge phenomenon, and relates to the field of insulators, the high-voltage insulator comprises a porcelain column, and a first umbrella skirt and a second umbrella skirt which are arranged at the outer side of the porcelain column, the top end of the porcelain column is provided with a ball seat, the bottom end of the ball seat is in threaded fit with a bottom rod, and the bottom end of the bottom rod extends out of the porcelain column; an arc-shaped block is fixed at the bottom of the extending end, and an arc-shaped slot is formed in the top end of the ball seat; the upper and lower insulators are in butt joint with the arc-shaped slots through the arc-shaped blocks to form a sphere, thereby increasing the curvature radius of the joint, enabling the surface electric field intensity to be more uniform, thoroughly avoiding the formation of a local strong electric field, fundamentally reducing the occurrence rate of corona discharge, and reducing the electric energy loss and electromagnetic interference. The structure that the two ends of the arc-shaped seam are high and the middle of the arc-shaped seam is low is formed between the arc-shaped block and the arc-shaped inserting groove and is a small-amplitude rotation space of the arc-shaped block, force can be unloaded through rotation under the action of wind force, and breakage or looseness caused by wind force impact in traditional rigid connection is avoided.

This utility model discloses a mud slurry iron removal device for ultra-high voltage insulator production, relating to the field of ceramic equipment technology. It includes an iron removal vessel with a top opening, a cover plate placed on top of the vessel, and a feed pipe connected to the interior of the vessel fixed to the top of the cover plate. The device is characterized by: a magnetic ring fixed to the inner circumference of the vessel; an iron discharge magnetic ring placed inside the magnetic ring on the bottom of the vessel's inner wall; a connecting rod fixed to the inner wall of the discharge magnetic ring; the top of the connecting rod fixed to the cover plate; the outer diameter of the cover plate being larger than the outer diameter of the vessel; two electric push rods fixed to the outer wall of the vessel; the telescopic ends of the electric push rods being fixed to the cover plate via connecting plates; a rotating rod extending through the cover plate into the vessel; and multiple stirring plates fixed to the outer side of the rotating rod at one end inside the vessel. This ensures sufficient contact between the mud slurry and the magnetic ring, improving the adsorption effect of iron impurities and achieving the cleaning of iron impurities from the magnetic ring.

The invention relates to a C6 repair-based HXD1 series locomotive high-voltage insulator residual life periodic performance research method, which comprises the following steps of: performing state grading, accelerated aging test and data fitting on a high-voltage insulator, establishing a thermal life model based on an Arrhenius equation, and accurately predicting the residual life of the insulator. The method has the advantages of being small in sample demand, easy and convenient to implement, high in prediction precision and the like, and is suitable for service life evaluation and maintenance decision making of the HXD1 series electric locomotive high-voltage insulator.

The present application relates to a kind of new energy distributed photovoltaic double-layer box-type substation, including box shell, high-voltage chamber, transformer chamber and low-voltage chamber, the high-voltage chamber is provided with inverted vacuum circuit breaker unit, integrated disconnecting switch, vacuum circuit breaker and grounding switch;High-voltage unit incoming line side is provided with high-voltage insulator, high-voltage lightning arrester and copper bar for connecting incoming line cable;Outgoing line side uses air insulation, and high-voltage current transformer and connecting copper bar are arranged.The new energy distributed photovoltaic double-layer box-type substation of the present application applies high-voltage cabinet inverted structure, transformer double-layer arrangement technology, low-voltage cabinet operation panel externalization and other technologies in the manufacture of box-type substation, reduces the area, compact structure, low cost, reliable performance and facilitates field construction and maintenance.

The invention discloses porcelain sand for extra-high voltage insulator production and a preparation method, the porcelain sand comprises the following components: 30-50 parts of formula mud, 13-18 parts of alumina powder, 10-15 parts of glaze powder, 4-9 parts of talc, 3-8 parts of first-class clay, 5-10 parts of second-class clay, and 4-9 parts of albite, the formula mud is prepared from the following components in parts by weight: 45 to 60 parts of kaolin, 25 to 30 parts of quartz sand, 10 to 15 parts of potassium feldspar, 8 to 10 parts of bentonite and 0.8 to 1.2 parts of carboxymethyl cellulose; the preparation method of the porcelain sand comprises the steps of ingredient grinding, magnetic separation for iron removal, filter pressing for dehydration, vacuum pugging, drying for sand making and high-temperature sintering. The porcelain sand has extremely high high temperature resistance, arc resistance and aging resistance, can be adhered to the root of an insulator blank through glue and is sintered and molded together with the blank, so that the root of the insulator can be better connected with a fitting through cement, and the overall mechanical strength and electrical performance of the insulator are improved.

The invention belongs to the technical field of steel smelting, rolling and forging processing, and discloses a method for improving the maximum tensile resistance stability of an extra-high voltage insulator steel foot, the steel grade is 45Mn2, and the production process comprises the steps of converter smelting, LF refining, RH vacuum treatment, continuous casting, rolling, straightening, blanking, forging and cooling. By controlling the steel-making DiZ value, controlling the out-of-roundness and the dimensional tolerance through steel rolling, controlling the material bending degree through straightening and controlling the final forging temperature and the cooling rate after forging, the stability of the maximum tensile resistance of insulator steel feet of different batches can be greatly improved, and the fluctuation range of the maximum tensile resistance compared with a reference value is controlled within + / -4.5 KN.

The invention discloses high-manganese alloy steel for an extra-high voltage insulator steel foot and a production process and a forging method of the high-manganese alloy steel, and the high-manganese alloy steel comprises the following components in percentage by weight: 0.471-0.490% of C, 0.180-0.260% of Si, 1.670-1.7% of Mn + Cr, 0.010-0.040% of Al, less than or equal to 0.025% of S and P, less than or equal to 0.0025% of Pb, and the balance of Fe and inevitable impurities. Through reasonable design of components, strict control of residual harmful elements Pb and H in the smelting process, implementation of a controlled rolling and controlled cooling process in the rolling process, positive and negative tolerance rolling according to environmental temperatures in winter and summer, and strict control of the heating temperature and the heating length in the forging process, the mechanical properties of a final product are as follows: the maximum tensile strength is stably controlled to be + / -5KN, and the tensile strength is controlled to be + / -5KN; and meanwhile, the crack occurrence rate of a user product is effectively controlled.

The utility model discloses a high-voltage insulator coaxiality detection tool for a GIS, which comprises a top plate and a substrate which are arranged in parallel, the upper part of the top plate is fixedly provided with a handle, the lower part of the top plate is symmetrically and fixedly provided with two guide sleeves, the upper part of the substrate is fixedly provided with guide columns at positions corresponding to the two guide sleeves respectively, and the guide columns are fixedly arranged on the upper part of the substrate. The two guide columns are matched with the lower portions of the corresponding guide sleeves in a sliding and inserted mode. The middle parts of the top plate and the base plate are respectively provided with an assembling hole I and an assembling hole II which have the same specification and are used for installing a detection tool, and the axes of the assembling hole I and the assembling hole II are combined. According to the utility model, the rapid detection of the coaxiality of the insulation torsion bar and the insulation cylinder can be completed by cooperating with a corresponding detection tool, so that the coaxiality detection process of the high-voltage insulator is more rapid and accurate, and the qualified rate of products can be improved.

The utility model relates to a plateau type long-life transformer. The technical problem to be solved by the utility model is to provide a plateau type long-life transformer. According to the technical scheme, the high-voltage transformer comprises an iron core, a coil, an upper supporting frame, an external connecting plate, a high-voltage insulator and a high-voltage wiring terminal assembly, the high-voltage wiring terminal assembly comprises a screw, an impact adjusting plate, an energy storage spring, an inner nut and an outer nut, and the upper supporting frame comprises a supporting frame body. The upper end and the lower end of the supporting frame body are perpendicularly bent to form a supporting frame upper portion and a supporting frame lower portion respectively, and the supporting frame upper portion is perpendicularly bent inwards to form supporting frame butt joint plates arranged at intervals. The high-voltage wiring terminal assembly has the advantages that the impact adjusting plate and the energy storage spring are introduced, and the anti-retreating clamping groove in the side part of the adjusting plate interacts with the adjusting clamping teeth on the adjusting opening of the butting plate, so that the high-voltage wiring terminal assembly has a dynamic buffering function, and loosening caused by vibration or impact is effectively reduced; and the operation reliability and the service life of equipment are improved.

This invention discloses a synchronous simulation system and method for testing insulators under high voltage and high current. The insulator testing system includes a high current generating device, an energy harvesting transformer, an insulating support, a high-frequency power conversion device, an AC power supply, a grounding metal support, a load, and a data acquisition and processing device. This insulator testing system can simultaneously provide the high voltage required for withstand voltage testing and the high current required for wireless power transmission; it controls the sequence of high voltage and high current excitation to measure various insulator parameters; and it controls the triggering sequence of high voltage and high current to achieve synchronous control of high current generation and efficiency testing. This invention enables withstand voltage testing of multi-stage coil high-voltage insulators by providing high voltage through an AC power supply, and controls the triggering sequence of high voltage and high current to test the transmission efficiency of multi-stage coil high-voltage insulators during short-term high current occurrences.

1. The name of the design product: high voltage insulator. 2. The use of the design product: insulator for high voltage, super high voltage overhead transmission line and transformer substation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This invention belongs to the technical field of electrical inorganic materials, specifically relating to a high-whiteness, high-voltage resistant insulator ceramic material and its preparation process. The ceramic material, by mass, consists of a basic component, a structure-regulating component, and an auxiliary phase component. Zirconia and niobium pentoxide are introduced to construct a composite regulation system, and various components such as talc, barium oxide, and magnesium oxide are combined to form a multiphase compatibility structure. The auxiliary phase uses rare earth oxides and borate fluxes to adjust the phase composition and stability. The preparation method includes steps such as raw material mixing, pressure filtration and mud refining, molding, drying and bisque firing, glazing, and high-temperature firing. A composite oxide glaze system is used for glaze construction. This invention features strong formulation synergy and precise structure regulation in its material composition and sintering process, making it suitable for the preparation of high-performance insulator ceramic products.

The invention relates to the technical field of cement-based adhesives, in particular to a cement-based electrical porcelain adhesive for an extra-high voltage insulator and a preparation method of the cement-based electrical porcelain adhesive for the extra-high voltage insulator. Early-stage and later-stage strength, salt corrosion resistance and toughness of the adhesive are improved by constructing a ternary synergistic effect of a quick-hardening mineral phase, a corrosion-resistant phase and a toughening phase; and a revolutionary cementing material with high hardness, high strength, corrosion resistance and toughness is provided for extreme environment power equipment such as extra-high voltage insulators, salt lake ocean wind power foundations and the like.

The invention relates to a high-voltage insulator cleaning device, and a driving assembly is connected with a shell. The first arc-shaped piece and the second arc-shaped piece are both in transmission connection with the driving assembly, the first arc-shaped piece and the second arc-shaped piece can be driven by the driving assembly to rotate around the set axis direction, the first arc-shaped piece and the second arc-shaped piece define a mounting space, and the mounting space is used for mounting a to-be-cleaned workpiece. The first laser emitting part is driven by the first arc-shaped part to move around the to-be-cleaned workpiece; the second laser emitting part is driven by the second arc-shaped part to move around the workpiece to be cleaned. The mounting frame is connected with the shell, and the mounting frame is in a non-closed ring shape; and the mounting frame is arranged corresponding to the to-be-cleaned workpiece in the mounting space in the set axis direction. The multiple nozzles are sequentially arranged on the inner side wall of the mounting frame at intervals along the mounting frame and used for spraying fluid to the to-be-cleaned workpiece in the mounting space. The cleaning effect on the high-voltage insulator can be effectively improved, and operation is easy and convenient.

The invention discloses a magnetic resonance wireless energy transfer multi-load constant voltage output system and method, and belongs to the field of wireless power supply, an N-level architecture (including a transmitting-relay unit, a receiving-transmitting unit and a relay-receiving unit, and a receiving unit is added when N is an even number) is adopted, and an S-type compensation topology and a DD / Q and DDQ differentiated coil structure are combined; cross coupling is eliminated through equivalent mutual inductance reconstruction and compensation capacitance dynamic adjustment, and zero-phase-angle input and multi-load constant-voltage output of the transmitting end are achieved. The innovation points lie in that the structure is compact and flexible, cross coupling suppression is effective, efficiency and stability are high, wired power supply can be replaced, the problems of difficult wiring and high maintenance cost in distributed scenes such as ultra / extra-high voltage insulator monitoring are solved, and the system has important engineering application value.

This invention relates to the field of data processing technology and discloses a digital operation and maintenance management method and system for the entire life cycle of ultra-high voltage insulators. The method includes: acquiring the digital genetic code of the insulator upon leaving the factory and anchoring it on the blockchain; simultaneously collecting dynamic phenotypic characteristics and micro-meteorological parameters related to grid connection; splicing and fusing the underlying heterogeneous data tensors, calculating edge weights based on wind direction and distance attenuation rules, and constructing a dynamic spatiotemporal map base; using a time-series graph convolutional network to perform deep evolutionary inference on the map, outputting a quantitative degradation risk score; dynamically generating differentiated operation and maintenance strategies and underlying control instructions based on this, and mapping virtual storage capacity demand parameters through trend extrapolation; identifying common defects, and issuing process optimization instructions to the manufacturing source after strict tamper-proof verification using blockchain. This invention completely breaks down cross-domain data silos, realizing a closed-loop leap from passive emergency repairs to predictive operation and maintenance and pre-scheduled supply chain scheduling for insulators.

The utility model discloses an embedded combined type high-voltage porcelain insulator, which comprises a porcelain bottle body and a binding post arranged at the upper part of the porcelain bottle body, a mounting base is arranged at the lower part of the porcelain bottle body, the mounting base is made of metal or nonmetal and is embedded on the porcelain bottle body, and the porcelain bottle body is made of an electric porcelain material. According to the utility model, the mounting base is made of metal or non-metal, and the porcelain bottle body is made of an electric porcelain material, so that the porcelain material with excellent insulating property, super-strong overvoltage resistance and natural hydrophobic property is creatively combined with a metal or non-metal structural member; the problems of poor reliability, high failure rate and the like in weather resistance, acid, alkali, salt mist, moist and dust environments of the conventional high-voltage insulators made of resin and DMC (Dimethyl Carbonate) materials are thoroughly solved.

The invention provides a high-voltage insulator pollution state monitoring method based on random undersampling and an adaptive lifting algorithm, and relates to the technical field of power system high-voltage equipment state monitoring. According to the method, meteorological and environmental data and directional dust retention conductivity are collected, a pollution accumulation index is constructed and converted into equivalent salt deposit density, and a state index grading system is established in combination with a salt spray test; and dynamic linkage of the state index and the maintenance activity is realized by utilizing RUSBboost model training and prediction. The method can accurately reflect the dirt accumulation and dissipation rule, improves the monitoring accuracy and real-time performance, optimizes the operation and maintenance strategy, reduces the cost, and improves the reliability of a power grid.

The invention relates to the technical field of insulator fixtures, and provides a lightweight composite insulator fixture which comprises a first main body and a second main body which are both provided with arc-shaped surfaces, and the arc-shaped surface of the first main body and the arc-shaped surface of the second main body define a clamping interval. Each of the first main body and the second main body comprises a carbon fiber layer and a Kevlar layer, and the carbon fiber layer is coated with the Kevlar layer. The invention further provides a manufacturing method of the light-weight composite insulator clamp. The composite material main body formed by the carbon fiber layer and the Kevlar layer can solve the problems of large size and heavy weight of a fixture body in the existing extra-high voltage insulator live-line replacement operation, and can meet the strength of the fixture, so that the fixture has lower weight while ensuring the structural strength, and is convenient to use. And the light weight requirement of the insulator replacement fixture is met.

A large-capacity wind power-dedicated new energy prefabricated substation, belonging to the field of substation technology, includes a prefabricated substation enclosure. Inside the enclosure are a high-voltage compartment, a transformer compartment, and a low-voltage compartment. The transformer compartment houses an oil tank with radiators extending to the outside of the enclosure on both sides. An oil conservator is located above the oil tank, connected to it via pipelines. The oil tank contains the transformer core and coils. The high-voltage compartment houses a high-voltage circuit breaker, with one side connected to a high-voltage insulator and the other side connected to the oil tank. The low-voltage compartment houses a low-voltage circuit breaker, with one side connected to the oil tank and the other side connected to the low-voltage incoming cable. The radiators extending to the outside of the tank, combined with the top oil conservator, form a natural oil circulation cooling channel, increasing the heat dissipation contact area and significantly improving the heat dissipation efficiency of the large-capacity transformer under high load, thus solving the problem of high-temperature operation of the unit.

The utility model discloses a hollow lead transformer, including high voltage insulator, low voltage insulator, shell, heat exchanger and circulating pump, it is equipped with a plurality of groups of high voltage insulator and low voltage insulator, and it is equipped with a plurality of groups of high voltage insulator and low voltage insulator transversely equidistant mode at the top of shell, heat exchanger is equipped on the front side and back side of shell, and circulating pump is equipped with the circulating pump. The circulating pump is mounted at the side bottom of the shell; an iron core, a confluence conduit and a plurality of groups of primary windings and secondary windings are arranged in the shell, the three secondary windings are respectively sleeved on a core column of the iron core, the three primary windings are respectively wound and sleeved on the secondary windings, the primary windings are led out to a high-voltage insulator through leads, and the secondary windings are led out to a low-voltage insulator through leads; the primary winding is formed by winding a hollow round wire, and the secondary winding is formed by winding a hollow flat wire. According to the device, the inherent heat dissipation problem is solved, and the problem of loss increase caused by the skin effect of current is solved.

The invention relates to the technical field of high-voltage insulator installation and maintenance, and provides a detection method for a high-voltage insulator, which comprises the following steps: 1, transmitting voltage impact to a to-be-detected high-voltage insulator through an impact voltage generator, and collecting three groups of charge data of current passing of the high-voltage insulator in real time, the voltage for data acquisition is changed in real time; and 2, establishing a data recording graph, and processing the charge data acquired in the step 1 to obtain stable charge quantity change data and instantaneous charge quantity change data. Through the impulse voltage generator and multi-step data processing, insulator defects and voltage-withstanding grades can be accurately evaluated, charge data are collected in real time and deeply analyzed, hidden dangers are rapidly positioned, a stability quantitative report is output, power system faults caused by insulator degradation are remarkably reduced, the reliability of a power transmission network is improved, and stable power supply is guaranteed. The operation and maintenance cost is reduced, and powerful technical support is provided for power system maintenance.

The invention discloses an extra-high voltage insulator three-dimensional infrared model reconstruction method and system. The method comprises the steps of obtaining aerial photography parameters and sending the aerial photography parameters to an unmanned aerial vehicle; the unmanned aerial vehicle receives the aerial photography parameters, flies according to the aerial photography parameters, collects an infrared image of the insulator in the flying process and sends the infrared image to the ground control station; receiving an infrared image of the insulator sent by the unmanned aerial vehicle; preprocessing each infrared image, calculating a camera pose of each infrared image, and generating a point cloud based on the plurality of preprocessed infrared images and the camera poses; fitting the point cloud by using a mixture model formed by K Gaussian components to obtain a 3D Gaussian mixture model; and mapping the infrared temperature of each infrared image to a 3D Gaussian mixture model to obtain an insulator three-dimensional infrared model. According to the insulator three-dimensional infrared model provided by the invention, infrared temperature information is fused, and the accuracy of defect identification can be improved.