1186 results about "Lightning arrester" patented technology

The invention discloses a power supply method and a power supply system for on-line monitoring equipment of a lightning arrester, and the method specifically comprises the steps: activating a multi-source energy module according to a preset priority order based on the operation state and environment parameters of the lightning arrester, and supplying power to the on-line monitoring equipment; based on the output characteristics of the multi-source energy module and the residual electric quantity of the on-line monitoring equipment, a constant voltage-constant current hybrid power supply strategy in a conventional mode or an anti-interference power supply strategy in an abnormal mode is executed on the on-line monitoring equipment; and processing the historical leakage current, environmental temperature and humidity and vibration spectrum characteristics of the lightning arrester acquired by the online monitoring equipment through the LSTM prediction model, predicting the energy supply trend of the online monitoring equipment in the preset future time, and dynamically adjusting the working parameters of the online monitoring equipment according to the energy supply trend. According to the invention, stable power supply of the lightning arrester on-line monitoring equipment in a complex environment is realized, and the power supply reliability and the equipment availability are improved.

The invention relates to the technical field of image recognition, in particular to a lightning arrester fault thermal imaging picture recognition method and system combined with gaze prediction, and the method comprises the steps: carrying out the down-sampling of an original thermal imaging image to a fixed size, sequentially passing through a multi-layer convolution and a Spatial Softmax layer, and outputting a predicted gaze point track sequence, extracting a key area and a non-key area according to the intensity of the fixation point track sequence; reconstructing the key area to obtain a compressed and recombined target area; inputting the non-key region into a variational auto-encoder to obtain a low-dimensional potential feature vector; and inputting the image-structure joint feature representation into an EffiCroprViT model, and finally obtaining a lightning arrester fault classification result. Local and global features are efficiently fused, the calculation complexity is reduced, background noise interference is effectively suppressed, real-time and accurate identification and early warning of the fault state of power equipment are realized, and the fault classification method has the advantages of high efficiency, high reliability and high reliability. Therefore, the safety and stability of power grid operation are ensured.

The invention discloses a self-sensing monitoring method, system and equipment based on a lightning arrester, and relates to the technical field of power equipment monitoring. The self-sensing monitoring method, system and equipment based on the lightning arrester comprises the following steps: S1, collecting lightning stroke data in real time through multi-sensing fusion, and performing data cleaning and standardization processing on the lightning stroke data; s2, adopting a three-mode sensing and three-source power supply cooperation mechanism to realize state-driven adaptive sensing and energy path switching; s3, automatically scheduling a communication path according to a communication type and link quality, dynamically analyzing and compensating transmitting power, and completing authentication encryption and multi-hop secure transmission; s4, lightning stroke characteristics are extracted, an equipment life prediction model is constructed, residual life prediction is realized, and equipment health grade division and operation strategy adjustment are carried out according to the residual life prediction model; and S5, calculating an electric leakage deviation value by reconstructing a current waveform, triggering graded early warning and linking a communication power and energy supply strategy. The problem that the operation of a power system is affected due to large leakage current monitoring errors is solved.

The invention discloses a lightning arrester on-line monitoring method and device, and relates to the field of intelligent monitoring, and the method comprises the steps: firstly collecting original current and voltage waveform data, carrying out the frequency domain decomposition operation, then introducing an intelligent prediction mechanism, carrying out the intelligent prediction of a phase error based on the fundamental voltage phase, temperature change and harmonic characteristics, and finally, carrying out the calculation of the phase error. And performing phase angle correction operation and preliminary calculation of resistive current on the fundamental current and voltage by using the corrected phase information, and introducing a historical data smoothing algorithm to perform noise reduction optimization on a result. And finally, comparing the analyzed and processed resistive current with a preset threshold value, and judging whether an alarm prompt is generated or not. Therefore, real-time evaluation and abnormal alarm of the operation state of the lightning arrester are realized, so that a powerful guarantee is provided for safe operation of a power system.

The invention discloses a power transmission line lightning arrester fault defect analysis method and system, and relates to the technical field of intelligent operation and maintenance of power equipment, and the method comprises the following steps: obtaining a lightning arrester simulation model; simulating a preset defect working condition by adjusting parameters of the lightning arrester simulation model, executing simulation for a plurality of times, and constructing a defect state feature set; acquiring multi-dimensional time sequence monitoring data during a single discharge action period of the lightning arrester, acquiring equivalent strength data based on the deep learning model, and accumulating the equivalent strength data to obtain accumulated equivalent action strength; performing feature similarity matching on the defect state feature set and the action feature vector of the multi-dimensional time sequence monitoring data, and identifying the defect type of the lightning arrester; and carrying out proportion calculation on the accumulated equivalent action intensity and preset tolerable action intensity, and if a preset alarm condition is met, outputting alarm information. The method is used for solving the problems that a traditional lightning arrester monitoring pair lacks structural modeling, and accurate defect evaluation and dynamic early warning are difficult to achieve.

The invention discloses a wide temperature range compensation method for resistive current of a lightning arrester, which belongs to the technical field of online monitoring of power equipment, and comprises the following steps: acquiring waveform data under a reference low-temperature working condition, and establishing an initial capacitive harmonic base; acquiring working condition data at any temperature in real time, performing harmonic decomposition, and analyzing to generate a nonlinear distortion feature vector; dynamically correcting the initial base by using the feature vector, and carrying out subtraction operation on the total current harmonic wave to obtain a final resistive current harmonic wave vector; and reconstructing an instantaneous resistive current waveform through inverse transformation and calculating a characteristic value. According to the technical scheme, the initial capacitive harmonic wave base is established, the nonlinear distortion feature vector is generated based on the harmonic distortion of the real-time working condition quantification temperature and valve plate nonlinear coupling, and dynamic feedback correction is conducted on the base, so that the real resistive current waveform in the wide temperature range can be accurately separated and reconstructed, and the accuracy of the real resistive current waveform in the wide temperature range is improved. And the accuracy and reliability of lightning arrester state evaluation are improved.

The invention provides a capacitive equipment resistive current taking-free PT signal measurement method suitable for a lightning arrester, and relates to the technical field of capacitive equipment resistive current measurement. The method comprises the following steps: deploying a non-contact electric field coupling sensing array; acquiring a multi-channel main induction signal and an equipment high-voltage side induction electric field signal; performing cascade filtering processing to obtain a filtering reference signal; dynamically correcting the phase deviation of the filtered reference signal to obtain a calibration reference signal; collecting a leakage current signal, and separating to obtain a resistive current component; and constructing a dielectric loss factor multivariable dynamic compensation model based on the deep belief network, embedding a capacitive equipment operation duration cumulative effect factor, and updating parameters in real time through an online learning algorithm to obtain a resistive current measurement result. High-precision measurement of resistive current is realized through an advanced technology, a model is established in combination with multiple environment parameters and equipment operation duration, adaptability is improved, and long-term accurate monitoring is guaranteed through online parameter updating.

The invention relates to a lightning arrester leakage ammeter self-calibration method and system, and the method comprises the following steps: disconnecting a main leakage ammeter from an external main measurement loop, and closing a calibration loop of a redundancy calibration sensor and a reference current source after a preset time is delayed; controlling a reference current source to output standard signals with different current magnitudes, collecting the standard signals by using a redundancy calibration sensor, extracting effective signal components, and performing environment compensation; iteratively calculating a relative error between the effective signal component and the standard signal, if the relative error is less than or equal to a second threshold value, updating a calibration coefficient according to a ratio of the standard signal to the effective signal component, and correcting a measurement result of the main leakage ammeter based on the calibration coefficient; if the relative error is greater than a third threshold value, locking output and uploading fault information; otherwise, recording as one exception, and carrying out maintenance early warning according to the number of exceptions. Compared with the prior art, the self-checking and real-time calibration of the leakage ammeter of the lightning arrester can be completed on the premise of not influencing the operation of power equipment.

The utility model discloses a lightning arrester electrical performance test tool, which relates to the field of lightning arresters and comprises a device body, a transmission plate is slidably connected in the device body, a cover plate is connected to the outer surface of the transmission plate, a power connection port is installed in the cover plate, a lightning arrester body is slidably connected in the cover plate, and the lightning arrester body is connected with the power connection port. A limiting hole is formed in the device body, a supporting base is installed in the device body, a water outlet pipe is communicated with the interior of the device body, a water tank is connected to the outer surface of the device body, a water pumping pipe is communicated with the interior of the water tank, and a water spraying plate is installed in the device body. Through cooperation of the cover plate, the water spraying plate and other parts, the cover plate can move, so that the power connection port is in contact with the upper ends of the lightning arrester bodies at different heights, the water spraying plate can spray water, spraying simulation is performed on the lightning arrester bodies, and the problem that deviation exists between a rainy day and a real detection result is solved.

The invention discloses a lightning arrester fault positioning method, which comprises the following steps of S1, installing an intelligent monitoring terminal externally connected with multiple sensors near a lightning arrester, monitoring the lightning arrester by adopting the multiple sensors, and preprocessing monitored data; s2, transmitting the monitoring data to a power operation and maintenance center by using the Internet of Things (IoT) to realize remote real-time monitoring; and S3, comparing long-term monitoring data with a normal lightning arrester database, and analyzing whether an abnormal trend exists or not. According to the invention, the fault condition of the lightning arrester is analyzed by combining the data monitored by multi-sensor fusion and adopting an intelligent analysis method, the problem that a slight fault and aging are difficult to distinguish is effectively solved, the fault position is corrected through the AI model, the fault positioning precision is improved, and the fault positioning accuracy is improved. In addition, the service life of the lightning arrester can be effectively prolonged in cooperation with the mode of intelligently adjusting the maintenance period through the AI prediction model, and the use requirement is met.

The invention relates to the technical field of lightning protection devices, and discloses a remote monitoring method, system and terminal for the running state of a lightning protection device, and the method comprises the steps: a first processor obtains the electrical data of a first lightning protection device through a preset first mutual inductance sensor, calculates the surge component data, calculates the change trend data according to a first period, and transmits the change trend data to a second processor; and matching with the trend template to generate a first state identifier, if matching, identifying to be good, otherwise, identifying to be abnormal. And the first processor establishes local wireless temporary connection with a second processor connected with a second mutual inductance sensor within a set distance according to a second period and sends a first state identifier, and the second processor stores the identifier and a communication address of the first processor. And the second processor generates a second state identifier corresponding to the second lightning protection device, inserts the two state identifiers into own equipment information, and wirelessly sends the two state identifiers to a remote background. According to the method, remote monitoring of the operation state of the lightning protection device is achieved, abnormal conditions can be found in time, and the operation and maintenance efficiency is effectively improved.

The invention discloses a lightning arrester installation tool, and belongs to the technical field of distribution network operation and maintenance. The tool comprises a connecting clamping jaw, a limiting plate, a distance adjusting module, a clamping clamping jaw, a drainage wire clamp module and a base hook, wherein the connecting clamping jaw can be used for pre-assembling the lightning arrester on the ground, and an impact wrench is used for automatically tightening the lightning arrester; the limiting plate is accurately positioned through the guide long plate; the distance adjusting module adjusts height through an electric push rod and a guide rail; the clamping jaw is driven by the steering engine to clamp the lightning arrester; the base hook hangs the wire by means of force, and the roller assists in stabilizing. The installation method comprises ground pre-assembly and high-altitude installation, the insulator does not need to be dismantled, the on-pole operation time is shortened by 50%, and the efficiency is doubled. Power failure can be avoided, operation and maintenance intensity is reduced, power supply reliability is improved, and the method is suitable for distribution network non-power-failure operation.

The invention provides a fault indication device of a lightning arrester and the lightning arrester. The fault indication device comprises a target resistor, a low-melting-point alloy, a counterweight and a shell, the target resistor, the low-melting-point alloy and the counter weight are all located in the shell; the first end of the target resistor is connected with a shell of the lightning arrester, the second end of the target resistor is grounded, the upper end of the low-melting-point alloy is in fixed contact with the target resistor, and the lower end of the low-melting-point alloy is connected with the balance weight; the shell comprises a visual subarea at the bottom; the target resistor generates different heat according to the magnitude of the leakage current of the lightning arrester, and when the temperature of the target resistor is higher than the melting point temperature of the low-melting-point alloy, the low-melting-point alloy is melted, and the counterweight falls into the visual partition. According to the device, by triggering melting of the low-melting-point alloy, advanced visual early warning can be provided before the lightning arrester breaks down, and the problem that fault indication of the lightning arrester is not timely is solved.

The utility model relates to the lightning arrester test technical field, and discloses an electric power switch cabinet lightning arrester test support comprising a support assembly, the support assembly is connected with a fixing assembly, the support assembly comprises a support tube, the outer wall of the support tube is provided with support legs in a surrounding manner, the support tube is internally provided with an adjusting rod in a sliding plugging manner, and the adjusting rod is connected with the fixing assembly. A plurality of fixing grooves are formed in the adjusting rod, a threaded rod is inserted into the supporting pipe in a threaded mode, limiting blocks matched with the fixing grooves are arranged on the threaded rod, the fixing assembly comprises a fixing table fixedly arranged at the top of the adjusting rod, a plurality of first sliding grooves are formed in the upper surface of the fixing table in a surrounding mode, and fixing blocks are arranged in the first sliding grooves in a sliding mode. According to the utility model, the height of the device can be adjusted, so that tests can be carried out at different heights, test data are enriched, test results are improved, meanwhile, test cost is saved, lightning arresters with different sizes can be fixed by the fixed block which can be adjusted in a sliding manner, and the practicability is high.

The invention relates to the field of lightning arrester parameter measurement, in particular to a lightning arrester parameter measurement system and method.The lightning arrester parameter measurement system comprises an induction unit, a detection unit, a data processing unit and a control and positioning unit and is used for generating and focusing laser on the surface of a lightning arrester, collecting an electrical signal and an optical signal of plasma and sending the electrical signal and the optical signal to a processor; the feature quantity is obtained through a feature extraction algorithm, and core parameters of the inversion lightning arrester are calculated through mechanical learning. Plasma is generated through laser focusing, reduction of errors caused by direct electrical connection and contact resistance with a lightning arrester is avoided, the problems of potential safety hazards and interference of traditional contact type measurement are solved, laser focus global scanning, real-time dynamic monitoring and efficient measurement are achieved through the three-dimensional electric translation platform, and the measurement precision is improved. All key areas on the surface of the lightning arrester are covered, compared with single parameter inversion in the prior art, multiple parameters and microscopic parameters are considered, and the prediction precision of key core parameters such as insulation resistance based on the random forest model is further improved.

The invention discloses a lightning arrester insulation protection method, and relates to the technical field of electric power insulation protection. The method comprises the following steps: generating a comprehensive insulation risk index based on collected insulation state parameters; determining repair permeability according to material structure characteristics, and constructing an electric field compensation factor in combination with running electric field distribution; performing periodic data accumulation and analysis on the comprehensive insulation risk index, the repair permeability strength and the electric field compensation factor to generate a long-term life prediction result covering the operation cycle, the material sub-region and the sampling point; and the service life prediction result corresponds to an insulation protection management module, and partition-level service life management and operation risk early warning are realized. Precise life prediction is realized through multi-dimensional data fusion, sub-region differential protection is supported, and the consistency of an operation period and a repair strategy is maintained, so that the reliability and stability of long-term operation of the lightning arrester are comprehensively improved.

The invention relates to an unbalanced data-oriented electric power system lightning disaster risk detection method, which comprises the following steps of: S1, gridding a target detection land parcel to obtain a plurality of grid units; S2, based on latitude and longitude coordinates of each grid unit, obtaining line parameters and environment characteristics of each grid unit in combination with a line database and a geographic information base, wherein the line parameters comprise tower height, span, grounding resistance, loop number, lightning arrester number and transformer capacity, and the environment characteristics comprise soil conductivity, building height and land utilization type; and S3, inputting the line parameters and the environment characteristics of each grid unit into a trained first detection model to obtain the thunder and lightning probability and the maximum peak current of each grid unit. Compared with the prior art, the multi-source data such as the tower height, the span, the grounding resistance and the soil conductivity are comprehensively considered, and the risk assessment result has higher regional adaptability and accuracy.

The invention discloses a lightning arrester resistor disc nonlinear conductivity fitting method and system based on a temperature correction coefficient, a medium and equipment, and the method comprises the steps: calculating a current-voltage relation of a lightning arrester according to the volt-ampere characteristic of the lightning arrester and the actual size and material parameters of each component in the lightning arrester, and converting the current-voltage relation into a current density-electric field intensity relation; processing the volt-ampere characteristic interpolation curve in a segmented manner by adopting a logarithm domain processing method and fitting the volt-ampere characteristic interpolation curve; calculating a nonlinear conductivity temperature correction coefficient according to the direct-current reference voltage of the resistor disc of the lightning arrester at different temperatures; calibrating the reference point of the temperature correction coefficient to obtain an equivalent nonlinear conductivity curved surface based on the temperature correction coefficient; performing goodness-of-fit calculation on the obtained equivalent nonlinear conductivity curved surface, and if the goodness-of-fit is relatively high, outputting the equivalent nonlinear conductivity; and if the goodness of fit is relatively low, performing segmentation fitting on the volt-ampere characteristic curve again until the goodness of fit of the equivalent nonlinear conductivity curved surface is relatively high.

The utility model relates to the technical field of transformers, in particular to a transformer installation supporting frame which comprises a first supporting structure used for supporting a transformer box body, and the first supporting structure comprises a first hoop ring hooped outside two telegraph pole bodies, two first supporting cross beams and four first locking screw rods; the second supporting structure is used for supporting the transformer lightning arrester and comprises a second hoop ring hooped outside the two telegraph pole bodies, two second supporting cross beams and four second locking screw rods; the second supporting structure is connected with the first supporting structure through the suspension device, so that the bearing capacity of the first supporting structure is increased, the first supporting assembly and the second supporting assembly are connected through the suspension device, and the second supporting structure can share part of the load borne by the first supporting assembly; therefore, the service life of the first supporting assembly is prolonged, and the bearing capacity of the first supporting assembly is higher.

The utility model relates to the technical field of transformer parts, and provides a transformer high-voltage lightning arrester mounting support which comprises a supporting transverse plate, a bearing vertical plate, a mounting frame plate, an adjusting unit and a limiting unit. One end of the supporting transverse plate is hinged with the bearing vertical plate, and the other end is fixed with the mounting frame plate; the adjusting unit is arranged above the supporting transverse plate, one end of the adjusting unit is hinged to the bearing vertical plate, the other end of the adjusting unit is fixed to the mounting frame plate, and the adjusting unit is provided with a sliding assembly used for driving the bearing vertical plate to be close to or away from the mounting frame plate; a limiting unit is installed at the upper end of the bearing vertical plate and comprises a supporting disc and a clamping assembly arranged on the supporting disc. The supporting disc is used for supporting a base of the lightning arrester, and the clamping assembly is clamped on the side wall of the base of the lightning arrester. The lightning arrester is fixed in a clamping mode, rapid installation of the lightning arrester is achieved, and the installation and disassembly efficiency of the lightning arrester is improved.

The invention discloses an electric lightning arrester insulation shield capable of being installed without power outage and an installation method, and relates to the technical field of electric protection, the electric lightning arrester insulation shield comprises an insulation cover, an elastic automatic locking mechanism, an installation sheet and a reinforcing plate, the insulation cover is integrally formed, a turnover plate is connected to the lower ends of a left side plate and a right side plate, and the elastic automatic locking mechanism comprises a left locking module and a right locking module; the modules are connected through a pressure piece and a clamping piece through a connecting piece, a lock body part penetrates through a locking hole to achieve locking, during installation, the protective cover is driven by an insulating rod to be horizontally pushed into the top of the lightning arrester, a locking mechanism is extruded and triggered to achieve automatic locking, the protective cover is fixed to an exposed metal piece, and main insulation is not affected. Locking is reliable, the service life is long, operation is convenient, the device can be expanded to multiple fields, and safe operation of equipment is guaranteed.

The invention relates to the technical field of lightning arresters, in particular to a lightning arrester protection device which comprises a composite post insulator, two lightning arresters symmetrically arranged on an upper support and electrically connected with a cable through the upper support, and the two ends of the composite post insulator are provided with a lower support and an upper support respectively. The lower support is provided with a monitoring assembly electrically connected with the lightning arresters and used for monitoring leakage current of the lightning arresters, and the lower support is provided with a switching assembly connected with the monitoring assembly. When the leakage current is abnormal, the switching assembly can timely isolate the faulty lightning arrester and put the other lightning arrester into use, power supply reliability and system safety are guaranteed, fault expansion is avoided, the monitoring assembly monitors the leakage current in real time, early warning is achieved, accurate switching is achieved, the misoperation risk is reduced, fault positioning is clear, and the service life of the lightning arrester is prolonged.

The invention relates to a portable auxiliary device for batch test of 10kV lightning arresters. The portable auxiliary device sequentially comprises a foldable support frame, a rotary base and a manual lifting rod from bottom to top, the support frame is an electric lifting rod for lifting the rotary base and the manual lifting rod; the top end of the supporting frame is sleeved with the rotating base, the rotating motor is in transmission connection with the rotating base, the rotating base is provided with a plurality of mounting strips arrayed in the circumferential direction of the supporting frame, and the length directions of the mounting strips are arranged in the radial direction of the supporting frame; three clamping grooves for fixing lightning arrester flange plates of the lightning arresters are formed in the mounting strips; the motor driving module is used for adjusting the lifting height of the supporting frame and the rotating angle of the rotating base. The wireless remote control module is used for remotely controlling the motor driving module; a high-voltage electrode array of the high-voltage electrode corresponds to the three clamping grooves and is used for synchronously applying test voltage; and the grounding end integrated board module is used for realizing parallel connection and electrification of a plurality of lightning arresters. The auxiliary device is portable and safe, and batch testing of lightning arresters is realized.

The invention relates to the technical field of high-voltage direct-current transmission, and particularly provides an overvoltage threshold self-adaptive adjustment protection method and device for an IGCT (integrated gate commutation current transformer), and the method comprises the steps: obtaining the real-time terminal voltage of a sub-module of a hybrid commutation current converter and the operation condition of the IGCT in the sub-module; and adjusting the overvoltage protection threshold of the IGCT in the sub-module of the hybrid commutation converter based on the real-time terminal voltage of the sub-module of the hybrid commutation converter and the operation condition of the IGCT in the sub-module. According to the technical scheme provided by the invention, a fuse can be omitted, the operation reliability of the converter valve is improved, the technical blank of related protection strategies of the lightning arrester of the hybrid commutation converter valve assembly is filled, and a reference basis is provided for the design of an engineering control protection system.

The invention provides an intelligent lightning arrester for a line. The intelligent lightning arrester comprises a lightning arrester body and an intelligent control box, the lightning arrester body is used for providing a low-impedance grounding channel for overcurrent when overvoltage caused by lightning or switching operation occurs on a line, so that the overvoltage is limited below a safety level, subsequent electrical equipment is protected from being damaged, the lightning arrester body recovers to an insulation state after the overvoltage disappears, and normal operation of a power system is guaranteed. The intelligent control box comprises an embedded intelligent sensing module and a diagnosis module, and the embedded intelligent sensing module is used for collecting operation state parameters of the lightning arrester body in real time; and the diagnosis module is used for evaluating the insulation state of the lightning arrester body by adopting a partial discharge mode recognition model according to the operation state parameters of the lightning arrester body, and predicting the aging trend of a valve plate unit of the lightning arrester body by adopting a valve plate aging trend prediction model. The lightning arrester disclosed by the invention has the dual advantages of compact structure and high-performance protection.

The invention belongs to the field of lightning arresters, particularly relates to a rapid replacement device and a rapid disassembly method for a line lightning arrester, and provides the following scheme aiming at the problems that an existing line lightning arrester usually needs to use various tools, the disassembly process is also complicated, each fastener needs to be disassembled step by step, and the fasteners may loosen. The lightning arrester comprises a lightning arrester body and a mounting frame, a fixed outer cylinder is fixedly embedded in the mounting frame, a mounting top plate is fixedly mounted at the bottom of the lightning arrester body, and two limiting vertical plates which are symmetrically arranged are slidably connected to the bottom of the mounting top plate. According to the technical scheme, by arranging the rotary limiting disc and mutual cooperation of all the components, when the mounting top plate can be quickly inserted into the fixed outer cylinder to complete mounting and dismounting, the mounting top plate can be directly pulled out finally by rotating the rotary limiting disc, driving a series of components to act and releasing all clamping and limiting states, and the whole process is easy to operate and does not need additional tools.

The invention discloses an intelligent control method and system for a power transmission line lightning arrester based on multi-source data fusion, and relates to the technical field of lightning arrester control, and the method comprises the following steps: carrying out the preprocessing of obtained multi-source lightning arrester data, and forming a fusion data source; according to the fusion data source, through a multi-physics field collaborative modeling and dynamic mapping method, constructing a multi-physics field coupled digital twin body, through an edge-cloud collaborative architecture built in the digital twin body, dynamically simulating multi-physics field distribution, and outputting a physical state vector; reasoning a first fault risk corresponding to the physical state vector according to the obtained lightning arrester knowledge graph; performing multi-modal cross check on the physical state vector and the first fault risk by adopting a three-dimensional evaluation space to obtain a second fault risk; and based on the second fault risk, dynamically generating and outputting a hierarchical control strategy of the lightning arrester through reinforcement learning. The method is used for solving the problems of multi-physical-field modeling distortion of the lightning arrester of the power transmission line and insufficient dynamic performance of risk assessment and control strategies.

The invention discloses a lightning arrester with an adjusting function, and belongs to the technical field of electrical equipment, and the lightning arrester comprises a lightning arrester body, the bottom end of the lightning arrester body is provided with an insulating seat, the bottom of the insulating seat is provided with a moving table, the top of the insulating seat is provided with a mounting mechanism, the bottom of the moving table is provided with a translation mechanism, and the moving table is provided with a lifting mechanism. A monitoring mechanism is arranged on one side of the translation mechanism, the monitoring mechanism comprises an equipment box, a lightning field intensity sensor, a humidity sensor and a controller, and the translation mechanism comprises a mounting frame, a screw rod, a servo motor, a driving plate and a connecting plate. Environmental electric field intensity and air humidity are monitored in real time through the lightning field intensity sensor and the humidity sensor, the controller dynamically calculates the optimal protection position of the lightning arrester based on a preset algorithm, the servo motor is driven to drive the lead screw to accurately rotate, and front-back translation adjustment of the lightning arrester body is achieved through transmission of the driving plate and the connecting plate. And a thunder and lightning high-incidence area is actively tracked.

The invention relates to the technical field of live detection, in particular to a power distribution gap lightning arrester live detection result compensation algorithm, which comprises the following steps: acquiring a voltage signal and dividing a period section, extracting waveform characteristics to generate a mark set, identifying trend reversal to construct a sudden change section list, analyzing intersection point spacing to form an abnormal set, and calculating a power distribution gap lightning arrester live detection result. And tracking trend deviation to determine correction data, mapping a reference path to reconstruct a reference baseline, and completing conduction state correction recording. According to the method, the detection data of the operation state of the power distribution gap lightning arrester is processed, waveform segmentation marks of a continuous period are constructed, a reversal trend path and slope abrupt change characteristics are combined, potential interference is identified, an abnormal fluctuation area is formed, and a voltage recovery deviation trend is constructed and analyzed through a front window and a trend line segment; and the offset starting and ending points are positioned and the reference path is corrected, so that the reliability of detection data, the accuracy of state judgment and the adaptability of operation conditions are effectively improved.

The invention provides an intelligent temperature measurement system of a temperature measurement type overhead transmission line image video monitoring device, and the system comprises a dual-light image fusion module which is used for generating a fusion image of an infrared image and a visible light image; the target detection module is used for identifying a target object in the image by adopting a target detection algorithm; the intelligent distance measuring module is used for calculating the actual distance between the device and the target; the environment parameter acquisition module is used for acquiring environment temperature data of an area where the cable terminal or the lightning arrester is located; the temperature measurement correction module is used for correcting an infrared temperature measurement error by using a multivariate nonlinear regression model based on Lasso regularization and outputting a corrected temperature value; and the image splicing module is used for generating a complete infrared image covering a plurality of cable terminals or lightning arresters. According to the invention, the problems of poor image information acquisition capability, insufficient target detection precision, large temperature measurement error, limited field angle coverage, single alarm mechanism, low system intelligence degree and the like in the prior art can be solved.