96 results about "Pollution flashover" patented technology

The invention relates to a power transmission line fault risk grading evaluation method based on multistage early warning, and belongs to the field of power system safety. Comprising the following steps: acquiring an insulator surface pollutant data generation matrix; extracting spatial distribution characteristics of pollutants; leakage current waveforms under different humidity are calculated; extracting a leakage current harmonic component and pulse characteristics; dividing pollution flashover risk grades; matching the maintenance strategy and generating an equipment scheduling instruction; and performing fault risk grading evaluation to generate a report. According to the method, through multi-source data fusion and dynamic modeling, accurate evaluation and preventive maintenance of the pollution flashover risk of the insulator are realized, and the safety and reliability of a power system are improved.

The invention relates to the technical field of high-voltage switch equipment, and discloses a primary and secondary fusion pole-mounted circuit breaker which comprises a base, a front plate is arranged on the front side of the base, the base and the front plate are connected through a connecting plate, a first solid-sealed polar pole is arranged on the top of the base, and a second solid-sealed polar pole is arranged on the top of the front plate. A high-voltage input plate is arranged at the top of the solid-sealed polar pole I, a high-voltage output plate is arranged on one side wall of the solid-sealed polar pole I, the connecting frame is fixedly connected between the solid-sealed polar poles I, the bird repelling mechanism is arranged at the top of the connecting frame and used for repelling birds to prevent the birds from stopping, and the shielding mechanism is arranged at the top of the solid-sealed polar pole I. By means of the bird repelling mechanism, the all-weather and intelligent active bird repelling function is achieved, stable equipment operation is guaranteed, a dual-drive mode combining wind power and solar power is adopted, it is guaranteed that the bird repelling function is uninterrupted, pollution flashover or short circuit faults caused by bird activities to high-voltage insulation parts are effectively avoided, and the equipment operation reliability is improved.

The embodiment of the invention discloses an insulator pollution flashover dynamic monitoring and early warning system, and relates to a power equipment state monitoring technology, and the system comprises a data collection module which is used for collecting the multi-source monitoring data of the operation state of an insulator, and the multi-source monitoring data comprises an electrical parameter, an environmental parameter and a pollution parameter; the feature processing module is used for performing time-frequency analysis and coupling analysis on the multi-source monitoring data to obtain data after feature processing; the mixed kernel function support vector machine analysis module comprises a kernel function calculation engine, a dynamic weight adjustment unit and a model optimizer, the kernel function calculation engine is used for supporting parallel calculation of a Gaussian kernel function and a polynomial kernel function, the dynamic weight adjustment unit is used for adaptive adjustment based on feature importance, and the model optimizer is used for parameter optimization; the early warning output module is used for outputting pollution flashover early warning information and maintenance decision suggestions according to the analysis result; the problems that a common monitoring system is poor in adaptability to complex environments and low in early warning accuracy can be solved.

The invention relates to the technical field of power system state monitoring, and discloses an insulator defect detection method and device and a storage medium, and the method comprises the steps: collecting the leakage current of an insulator, and constructing a polarity conduction screening model through power frequency phase information, so as to generate a composite current sequence which highlights the polarization attribute of an interface; analyzing the nonlinear degree of the attenuation rate of the sequence drifting along with evolution time in a multi-stage diffusion evolution time domain, and generating an interface electrochemical mass transfer composite index; utilizing the index to invert and construct an interface polarization background reference and stripping the interface polarization background reference from the composite current sequence so as to extract an abnormal discharge pulse residual error; and finally, quantizing the pulse form distortion degree of the residual error, and performing suppression normalization operation on the distortion degree by using the index to output a judgment result. According to the invention, the interference of the interface mass transfer process is effectively eliminated, and the specific detection of the pollution flashover hidden danger is realized.

The embodiment of the invention discloses an insulator pollution flashover dynamic monitoring and early warning method, device and equipment and a storage medium, and relates to the technical field of power equipment state monitoring, and the method comprises the steps: collecting the multi-source monitoring data of the operation state of an insulator in real time, the multi-source monitoring data comprising an electrical parameter, an environmental parameter and a pollution parameter; performing feature fusion processing on the multi-source monitoring data to construct a feature matrix, and obtaining an environment-pollution dynamic coupling factor; a hybrid kernel function support vector machine model is constructed, the hybrid kernel function support vector machine model adopts a hybrid kernel function of a Gaussian kernel and a polynomial kernel, and the kernel function proportion is dynamically optimized through an adaptive weight adjustment mechanism; based on the feature matrix and the environment-pollution dynamic coupling factor, using the mixed kernel function support vector machine model to realize pollution flashover early warning; the problems that a traditional monitoring method is poor in adaptability to a complex environment and low in early warning accuracy can be solved.

The embodiment of the invention discloses an insulator pollution flashover test method considering the property of a pollution source, and the method comprises the steps: carrying out the pollution treatment of a sample insulator according to the property of the pollution source, and obtaining a test insulator; arranging the test object insulator and a test environment thereof; applying low voltage and steam mist to the test object insulator to enable the test object insulator to reach a saturated wet state; according to the method, a pollution test is carried out on the test object insulator by adopting a gradually-decreasing constant voltage method to obtain the flashover voltage of the test object insulator, the test object insulator can be smeared in a targeted manner according to the pollution source property of a certain area, and then the flashover voltage is obtained through the test, so that the representativeness and typicality of the test are improved, and more accurate test data are obtained; and guidance is provided for insulation configuration and operation maintenance of the power transmission line in the region.

The utility model discloses a novel line column type composite insulator, which comprises a fixed core body, a high-voltage end head is arranged at the top end of the fixed core body, an adhesive film is arranged at the joint of the high-voltage end head and a fixed umbrella cover, and the high-voltage end head and the fixed core body are fixedly adhered through the adhesive film. The bottom end of the fixed core body is sleeved with a metal accessory in a compression joint mode, a threaded connector is formed in the bottom end of the metal accessory, the metal accessory is in threaded connection with a screw assembly through the threaded connector, the outer side of the fixed core body is sleeved with a fixed umbrella cover, and part of the metal accessory is wrapped by the bottom end of the fixed umbrella cover. And the fixed umbrella cover integrally wraps the high-voltage end socket at the upper end. According to the utility model, the electrical performance of a product can be effectively improved, the creepage distance of the product is reasonably and effectively increased, the anti-pollution flashover capability of the insulator is greatly improved, the normal service life of the insulator can be effectively ensured, and the production efficiency of the product is improved.

The present invention provides an intelligent analysis system for porcelain insulators that combines mechanical and electrical properties, and relates to the field of monitoring data processing technology. The present invention can accurately track the path, speed, and direction of pollution flashover propagation from the starting porcelain disk to other porcelain disks by fusing multimodal images and time series analysis, thereby realizing dynamic modeling of the pollution flashover evolution process, effectively breaking through the limitations of the traditional static assessment model, and significantly improving the real-time and accuracy of risk assessment. The present invention marks the earliest pollution abnormal porcelain disk as the starting point of pollution flashover propagation through retrospective analysis of the integrated fusion abnormal points, and constructs a propagation chain and time series, which helps to identify key node porcelain disks and establish fault prediction logic based on evolutionary relationships. Through the dual-channel triggering mechanism, the early warning capability is significantly improved, ensuring that intervention can be made in the early stages of the risk, effectively preventing flashover from spreading to the entire string of insulators and causing system accidents.

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 invention discloses a power distribution station house intelligent inspection robot based on an AI large model and a control system thereof, and relates to the technical field of power distribution station house inspection. And a multi-modal large model based on power distribution station house industry data fine adjustment is integrated in the multi-modal data processing module, and the multi-modal data processing module is used for processing and analyzing multi-modal data acquired by the path-finding camera, the distance measuring radar and the inspection information acquisition assembly and outputting an inspection result and a control instruction. According to the invention, the multi-mode large model based on power distribution station house industry data fine adjustment is arranged in the main control assembly, so that intelligent diagnosis and comprehensive pre-judgment of the state of key equipment of the power distribution station house are realized. The robot can fuse and analyze multi-source data such as infrared thermal imaging, partial discharge ultrasonic waves, sulfur hexafluoride gas concentration and the like and identify specific hidden dangers of a power distribution station room such as overheating of a switch cabinet contact, abnormal oil level of a transformer bushing, pollution flashover risk of an insulator and the like, so that targeted early warning and maintenance suggestions are output; and traditional data acquisition is improved into intelligent diagnosis and comprehensive pre-judgment.

The application relates to the technical field of power equipment inspection, in particular to a power equipment inspection method and system based on visual identification; the method comprises the following steps: collecting visible light images, infrared images, ultraviolet images and environment working condition identifiers, and generating a multi-environment three-mode inspection data set; mapping the visible light images, the infrared images and the ultraviolet images to an insulator cross-mode surface coordinate grid to obtain a three-mode coordinate observation point set, and generating a mode environment applicability structure; constructing a three-mode time sequence fingerprint, analyzing the time sequence change relationship of the three-mode time sequence fingerprint based on the environment working condition identifiers, and identifying a high-humidity sensitive grid set; performing state integration processing on the three-mode time sequence fingerprint of the spatial position in the insulator cross-mode surface coordinate grid, generating pollution flashover hidden danger judgment information of a target insulator, and outputting a power equipment inspection result containing the pollution flashover hidden danger judgment information. The application realizes the positionable inspection judgment of insulator pollution flashover hidden dangers in a high-humidity pollution environment.

The application discloses a power distribution network communication fault type identification method and device, electronic equipment and storage medium, the method comprises the following steps: obtaining the voltage mode time-frequency matrix before and after the occurrence of the power distribution network communication fault, extracting the voltage fundamental wave amplitude, the voltage main harmonic amplitude and the voltage main harmonic amplitude frequency before and after the occurrence of the communication fault; obtaining the current mode time-frequency matrix before and after the occurrence of the power distribution network communication fault, extracting the current direct current amplitude, the current main harmonic amplitude, the current main harmonic amplitude frequency and the current total frequency band amplitude before and after the occurrence of the communication fault; based on the above parameters, a criterion is constructed to determine whether the power distribution network communication fault type is a lightning flashover communication fault or an insulator pollution flashover communication fault. Through the implementation of the application, the lightning flashover communication fault and the insulator pollution flashover communication fault in the power distribution network can be effectively identified, thereby significantly improving the operation reliability of the power distribution network and ensuring the safe and stable operation of the power system.

The present application discloses a method, device and electronic equipment for determining the number of insulators on a transmission line, and belongs to the field of electric power engineering technology. The method for determining the number of insulators on a transmission line includes the following steps: obtaining first basic data of a number of insulators on the transmission line, the first basic data including configuration information, pollution degree and altitude of the insulators; determining first correction data corresponding to the insulators based on the first basic data, the first correction data including: test salt density and upper and lower surface area pollution ratio correction coefficient; generating fitting data corresponding to the insulators based on the first basic data and the first correction data, the fitting data representing the single-piece pollution flashover voltage under different test salt density conditions; predicting the configuration result of the single-piece pollution flashover voltage based on the selected test salt density and the selected test salt density, the configuration result is used to configure the number of insulators under the selected test salt density, actual pollution degree and actual altitude conditions. The present application can improve the efficiency of configuring the number of insulators.

The invention belongs to the technical field of insulators, and discloses an anti-pollution flashover umbrella skirt structure optimized composite insulator which comprises an insulating core rod and a plurality of umbrella skirt units arranged on the insulating core rod in a sleeving mode, each umbrella skirt unit comprises a main umbrella skirt body and an auxiliary umbrella skirt body, and an annular pollution dredging and flow guiding inclined face is arranged on the upper umbrella face of each main umbrella skirt body. The radial inclination angle of the sewage draining and flow guiding slope is gradually increased in a gradient manner outwards along the radial direction of the umbrella body; the edge of the lower umbrella surface of the main umbrella skirt body is provided with an annular arc-resisting rib; the arc cutting fracture structures cut off the circumferential development path of an electric arc, the annular arc blocking ribs lengthen the creepage path of the electric arc, meanwhile, the arc cutting fractures of the upper and lower adjacent main umbrella skirt bodies are distributed in a staggered mode, axial through of the electric arc is eradicated, the arc extinguishing probability is remarkably improved, and the arc extinguishing effect is improved. And pollution flashover is thoroughly inhibited, and the device is suitable for severe working conditions such as counter-weight pollution and rainstorm.

The invention relates to the technical field of high-voltage insulation, and particularly discloses a high-voltage bushing with a self-cleaning hydrophobic surface and a preparation method thereof.The preparation method comprises the steps that the outer insulation surface of the high-voltage bushing is subjected to cleaning and activation pretreatment; a coating composition containing a low-surface-energy polymer adhesive and a functional filler subjected to hydrophobic treatment is uniformly applied to the surface of the pre-treated sleeve in a spraying manner and the like; and finally, a firmly combined functional coating is formed on the surface of the sleeve through curing treatment. The invention further provides the high-voltage bushing prepared through the method, the pollution flashover resistance of the bushing can be remarkably improved, the surface self-cleaning effect can be achieved by means of rain wash, the operation and maintenance workload is greatly reduced or eliminated, and the high-voltage bushing is particularly suitable for power equipment operating in the outdoor high-pollution and high-humidity severe environment.

The invention relates to a post porcelain insulator pollution flashover state monitoring method based on multi-modal information digital conversion and fusion, and the method comprises the steps: obtaining a visible light image and an infrared image of a post porcelain insulator, and carrying out the segmentation of the visible light image at the bottom layer of the visible light image and the infrared image through an improved YOLOv11-MLL model, obtaining an insulator area of the visible light image and an insulator area of the infrared image; the insulator pollution degree of the insulator area of the visible light image is obtained through extraction of a Gaussian process regression model; insulator temperature rise information of an insulator area of the infrared image is extracted through a character recognition technology; obtaining a discharge ultraviolet pulse waveform of the pillar porcelain insulator, and extracting to obtain insulator discharge information; calculating an IDFI index according to the insulator pollution degree, the insulator temperature rise information and the insulator discharge information; and judging the pollution flashover state of the pillar porcelain insulator according to the IDFI index and a preset threshold value. Compared with the prior art, the accuracy and reliability of pollution flashover state monitoring are improved.

The utility model discloses an auxiliary umbrella cover which is used for covering an insulator in operation, the insulator comprises an insulator, a sheath and a spiral umbrella skirt, the sheath and the spiral umbrella skirt are arranged outside the insulator, and the spiral umbrella skirt is in a continuous spiral shape on the periphery of the sheath along the axial direction of the insulator. The spiral umbrella skirt comprises a plurality of single-circle spiral umbrella skirts which are sequentially connected in the axial direction of the insulator, the auxiliary umbrella cover is a spiral single-piece umbrella cover, the auxiliary umbrella cover is adhered to the upper surface of the spiral umbrella skirt through an adhesive, and the auxiliary umbrella cover at least continuously covers the upper surface of one single-circle spiral umbrella skirt. The auxiliary umbrella cover is tightly bonded on the spiral umbrella skirt, so that the problem of aging of the insulator is effectively solved, the maintenance cost of the insulator is reduced, the auxiliary umbrella cover is long in service life and not easy to pollute and damage, and the ice flashover resistance, rain flashover resistance and pollution flashover resistance of the insulator are improved.

The present invention relates to the technical field of power equipment monitoring and diagnosis, and specifically to a method for calculating the flashover voltage of a composite insulator under heavy pollution conditions. The method comprises inputting initial parameters into a target pollution flash circuit model to calculate the arc root radius; calculating the target residual pollution layer resistance based on the arc root radius, and calculating the initial arc current based on the Newton secant method; calculating the pollution layer voltage gradient and arc voltage gradient based on the initial arc current; determining whether flashover has occurred based on the initial local arc length and the insulator creepage length; and, if flashover has not occurred, correspondingly increasing the initial local arc length or the initial applied voltage based on the magnitude of the pollution layer voltage gradient and the arc voltage gradient until the pollution flashover voltage is calculated when flashover occurs. The present invention implements the calculation of the flashover voltage of a composite insulator under heavy pollution conditions and has excellent application prospects.

The application discloses an elastic anti-pollution flashover anti-icing anti-corrosion coating material and a preparation method thereof. The coating material comprises, in parts by weight, 80-120 parts of a silicone modified polycarbonate polyurethane resin, 2-10 parts of a modifier, 15-30 parts of a pigment and filler, 0.5-1 part of a defoaming agent, 0.5-1 part of a leveling agent and 0.5-1 part of a dispersing agent. The modifier is a nitrogen-doped porous carbon loaded with phosphate or a nitrogen-doped porous carbon modified by zinc nitride loaded with phosphate. The nitrogen-doped porous carbon and the nitrogen-doped porous carbon modified by zinc nitride in a layered structure are added to the coating system as a barrier modifier, and the carbon material loaded with phosphate is added to the coating. Under long-term use of the coating, the phosphate released by the carbon material loaded with phosphate can be stably hydrolyzed, so that loose iron oxides are converted into a corrosion-resistant phosphide film, and the corrosion is inhibited.

The application relates to a preparation method of a rare earth-carbide composite phase-containing anti-pollution flashover tempered glass substrate, and relates to the technical field of tempered glass preparation. Rare earth oxides, carbide powder and grinding aids are mixed to obtain a rare earth-carbide composite powder; base raw materials, the rare earth-carbide composite powder, fluxing agents and clarifying agents are mixed to obtain mixed raw materials; the mixed raw materials are sent into a glass melting furnace for melting, argon is introduced for stirring, and clarification is carried out; the clarified glass liquid is injected into a mold for pressing and forming, and after demolding, the glass is sent into a tempering furnace to obtain a tempered glass intermediate to obtain the rare earth-carbide composite phase-containing anti-pollution flashover tempered glass substrate; the application can effectively improve the internal stress distribution of the glass, reduce defects, and improve the bending strength and pollution flashover voltage of the tempered glass.

The application belongs to the technical field of power equipment insulation, and is especially a composite insulator for power overhead line, which comprises a core rod, the core rod is rigidly arranged, and the two ends of the core rod are fixedly connected with a first fitting and a second fitting respectively, the first fitting is used for being connected with a tower, and the second fitting is used for hanging a conductor, a full-peripheral sealing patch is fixedly attached to the outer surface of the core rod along the length direction; and an umbrella skirt body, the umbrella skirt body is a one-piece molding structure of silicon rubber, and the inner side wall of the umbrella skirt body is adapted to the outer surface of the full-peripheral sealing patch. The application has the advantages of reliable sealing performance, high mechanical strength, good pollution flashover resistance, convenient installation and maintenance, and can effectively prevent water, dust and corrosive medium from invading, improve the stability and service life of the insulator in complex environment, and meet the high performance requirements of the power overhead line on the insulating components.

The application discloses a kind of power transmission and transformation equipment outer insulation pollution monitoring and evaluation system and method, belong to power transmission and transformation equipment state monitoring and evaluation field, it includes multimode enhanced perception terminal, online pollution component spectrum sensing module, multi-physical field dynamic electric-thermal simulation module, pollution flashover mechanism diagnosis and margin correction module and intelligent operation and maintenance decision module.The present application adopts spectrum sensing analysis identification and quantifies the proportion of easily soluble salt, slightly soluble salt and other components in the pollution layer;Based on the proportion of the components, run the multi-physical field dynamic electric-thermal simulation model, simulate the process of pollution layer moisture absorption, evaporation and dry band formation, output the corrected pollution flashover voltage data;And combine the insulator health index evaluated by high-frequency acoustic signal, use decision matrix to generate intelligent operation and maintenance suggestions for replacement, cleaning or coating.The present application can accurately evaluate the pollution flashover risk from the microscopic components and physical mechanism level, improve the reliability of pollution flashover early warning and the pertinence of operation and maintenance action.

The invention belongs to the technical field of coatings, and particularly relates to an anti-pollution flashover coating as well as a preparation method and application thereof. The anti-pollution flashover coating is prepared from the following raw materials in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 5 to 8 parts of a cross-linking agent, 0.1 to 0.5 part of a modified titanate catalyst, 40 to 80 parts of a flame retardant, 12 to 30 parts of a reinforcing agent, 200 to 300 parts of a solvent, 2 to 5 parts of a coupling agent, 2 to 10 parts of functional filler and 0.5 to 2 parts of hexamethyldisilazane, wherein the viscosity of the hydroxyl-terminated polydimethylsiloxane ranges from 3000 mPa.s to 50000 mPa.s, and the viscosity of the hydroxyl-terminated polydimethylsiloxane ranges

The application discloses a substation insulator pollution flashover monitoring method and device, electronic equipment and storage medium. Among them, the method comprises the following steps: collecting the pollution flashover sound wave data of the target monitoring insulator, filtering the pollution flashover sound wave data, and obtaining the target sound wave data; determining the target environment data of the environment where the target monitoring insulator is located, wherein the target environment data comprises at least one of equivalent salt density data, temperature and humidity data and air dust content data; the target sound wave data and the target environment data are input into the pollution flashover evaluation model for pollution flashover evaluation, and the target pollution flashover grade is obtained; the target pollution flashover grade is used as the pollution flashover monitoring result corresponding to the target monitoring insulator. The application monitors the pollution flashover of the insulator from multiple dimensions (sound wave and environment), and improves the accuracy of the substation insulator pollution flashover monitoring.

The application discloses an insulator super-hydrophobic anti-pollution flashover coating and a preparation method thereof, and belongs to the technical field of anti-pollution flashover coatings. The preparation method comprises the following steps: spraying a bottom coating on the surface of a cleaned insulator, wherein the bottom coating comprises 30-45 parts of polydimethylsiloxane, 15-20 parts of micron modified aluminum hydroxide, 3-5 parts of micron modified titanium dioxide, 5-10 parts of nanometer modified silicon dioxide, 45-55 parts of a dispersing agent and 1-2 parts of a curing agent; after the bottom coating is cured, a surface coating is sprayed, and the coating is obtained after curing; the surface coating comprises 6-10 parts of polydimethylsiloxane, 7-15 parts of micron modified silicon dioxide, 3-5 parts of micron modified titanium dioxide, 0.5-5 parts of nanometer modified silicon dioxide, 75-85 parts of a dispersing agent and 0.6-0.9 parts of a curing agent. The super-hydrophobic anti-pollution flashover coating has good hydrophobic self-cleaning performance, anti-pollution flashover capacity, high durability, good anti-impact capacity and self-repairing capacity.

The utility model relates to the technical field of insulators, in particular to a novel pillar mixed porcelain insulator, which comprises a porcelain body, and a plurality of porcelain umbrella skirts are formed on the outer wall of the porcelain body; the insulating protective sleeve is sleeved on the porcelain umbrella skirt and is matched with the porcelain umbrella skirt in shape; the porcelain head is fixedly connected with the end part of the porcelain body; the flange is sleeved on the porcelain head; and the bonding part is arranged between the flange and the porcelain head and is used for mutually fixing the porcelain head and the flange. According to the invention, a layer of silicone rubber insulation protection sleeve is formed on the porcelain umbrella skirt, so that the novel pillar mixed porcelain insulator not only retains the excellent mechanical performance of the original porcelain pillar insulator, but also has the excellent anti-pollution flashover performance of a composite pillar insulator.

The utility model discloses a composite insulator capable of improving pollution flashover, which belongs to the technical field of insulators and comprises a steel foot, a porcelain piece arranged on the steel foot, a steel cap arranged on the porcelain piece, a plurality of annular grooves arranged on the porcelain piece along the length direction, and antifouling rubber belts arranged in the annular grooves. Compared with single-layer silicon rubber coating, the ceramic piece-antifouling rubber belt-ceramic piece-antifouling rubber belt alternate composite structure can more effectively maintain hydrophobicity, even if local silicon rubber is aged, partial unaged rubber can still maintain the overall hydrophobic characteristic, pollution flashover is prevented, and the service life of the ceramic piece-antifouling rubber belt-ceramic piece-antifouling rubber belt is prolonged. The problem of hydrophobicity attenuation caused by aging of the whole rubber in the all-composite insulator is avoided, dirt adhesion is reduced, the anti-pollution flashover capability is enhanced, and the service life is prolonged.

The embodiment of the invention relates to a structural data determination method and device for an umbrella skirt damage insulator, equipment and a medium. The method comprises the steps that umbrella skirt damage data of a current insulator and insulation attribute data of a complete insulator corresponding to the current insulator are acquired; determining a first relation function, a second relation function and a third relation function corresponding to the umbrella skirt damage data; wherein the first relation function represents the relation between the pollution flashover voltage and the creepage distance, the second relation function represents the relation between the grading ring field intensity and the grading ring pipe diameter, and the third relation function represents the relation between the umbrella skirt field intensity and the cover depth; and determining improved structure data corresponding to the current insulator according to the insulation attribute data, the first relation function, the second relation function and the third relation function. Therefore, the insulation characteristic of the insulator still meets the required insulation effect after the umbrella skirt is damaged.

The invention discloses a preparation method of a full-dimensional cement-based super-infiltration insulator material. The preparation method comprises the following steps: obtaining Portland cement slurry; sequentially adding a silane coupling agent and an ultra-infiltration modifier into the Portland cement slurry to obtain first mixed slurry; compounding calcium carbonate particles, diatomite and hydrophobic silicon dioxide particles with different particle sizes in the first mixed slurry, uniformly stirring, and then adding an active mineral admixture to obtain second mixed slurry; and carrying out compression molding and curing treatment on the second mixed slurry, and demolding and curing to obtain the full-dimensional cement-based super-infiltration insulator material. The full-dimensional insulator does not depend on a surface functional coating, a low-temperature compression molding process is adopted, a super-hydrophobic block material with a compact interior and a multi-stage rough surface structure is formed, the material body has super-infiltration, high mechanical strength and high electrical insulation performance, and then the problem of pollution flashover prevention of electrical equipment is fundamentally solved.

The application discloses a protective cover with a self-cleaning function for a drop-out fuse, which comprises a polyvinyl chloride (PVC) protective cover base body and a self-cleaning nano composite coating coated on the surface of the protective cover base body. The protective cover base body is made through an injection molding process and has a folding design to adapt to and protect the drop-out fuse and prevent short circuit caused by contact of small animals. In order to solve the problem of dirt in an outdoor environment, the application adopts an electrostatic spraying method to prepare a nano composite coating composed of TiO2 nanofibers and polyvinylidene fluoride (PVDF) on the surface of the base body. The coating has super-hydrophobic and self-cleaning functions, can significantly improve the surface insulation performance of the protective cover and reduce pollution flashover accidents. The protective cover of the application has excellent super-hydrophobic, self-cleaning and durable performances after product inspection and is suitable for complex outdoor environments, effectively guaranteeing the safe operation of the drop-out fuse.