89 results about "Lightning arrester" patented technology

This application discloses a wind turbine and a lightning strike current measuring device. The wind turbine includes a lightning arrester, a lightning conductor, a magnetic field sensor, and a controller. The lightning arrester is installed on the blade of the wind turbine to receive lightning strike current. The lightning conductor is located inside the blade and arranged along the length of the blade. One end of the lightning conductor is electrically connected to the lightning arrester, and the other end is electrically connected to the nacelle of the wind turbine. The magnetic field sensor is installed on the yaw platform of the wind turbine to detect the electromagnetic induction value generated when the lightning strike current flows through the yaw platform. The controller is electrically connected to the magnetic field sensor and receives the electromagnetic induction value and calculates the lightning strike current value based on the electromagnetic induction value. The technical solution provided by this application, through the magnetic field sensor preset on the yaw platform, detects the electromagnetic induction value generated when the current flows through in real time and transmits the electromagnetic induction value to the controller electrically connected to it. The controller can accurately calculate the lightning strike current value.

The application discloses a kind of transformer intelligent enclosed neutral point protection devices, including maintenance switch, lightning arrester, capacitive voltage divider, filter module, isolation transformer, charge-discharge module, voltage detection module, gap discharge unit, digital control unit;Filter module is used to filter the voltage signal of capacitive voltage divider after voltage division flows into isolation transformer, removes high-frequency signal, retains power frequency or its multiple frequency signal, realizes the distinction of transient overvoltage signal and steady overvoltage signal;Voltage detection module is used to detect the voltage amplitude of four capacitors in charge-discharge module, duration, and real-time transmission detection data to digital control unit, and digital control unit real-time uploads detection data to main control background, control pulse trigger controllable switch opens or closes, control discharge of enclosed discharge gap.The application realizes the accurate identification of transformer neutral point overvoltage type, solves the problem of high misoperation rate of existing device, damage transformer.

A lightning protection structure of an outdoor tower type meteorological monitoring station relates to the field of meteorological monitoring equipment and is used for improving the safety and stability of a down lead and prolonging the service life of the down lead. The outdoor tower type meteorological monitoring station lightning protection structure comprises a tower type support, a meteorological monitoring element, a lightning arrester, a downlead, a grounding device, a quartz sleeve and a shielding net. A vertical cavity is formed in the middle of the tower-shaped support and penetrates through the tower-shaped support. A plurality of meteorological monitoring elements are arranged, and the meteorological monitoring elements are distributed on the tower-shaped support. The lightning arrester is fixedly arranged on the top of the tower-shaped support and located on the upper side of the vertical cavity. The down lead is electrically connected with the lightning arrester, the down lead is vertically arranged on the tower-shaped support, and the two ends of the down lead penetrate through the vertical cavity; the grounding device is fixedly arranged underground, and the lightning arrester is electrically connected with the grounding device; the quartz sleeve is arranged in the vertical cavity and sleeves the outer side of the down lead; and the shielding net is made of a high-permeability material and is arranged outside the quartz sleeve.

The application discloses a production process of a composite lightning arrester protective cover. The process comprises the following steps: mixing the main runner and the branch runner which are broken after being cut off in advance with new material particles in proportion, feeding into an injection molding machine to melt and form, and obtaining a protective cover with a runner; using an automatic taking and placing mechanism to take the protective cover out of the mold and move it to a cooling station, using an automatic cooling mechanism to forcibly air cool and shape the protective cover, and shortening the cooling time in the mold; then moving to a cutting station, using an automatic cutting mechanism to cut off the main runner and the branch runner at one time, realizing the rapid separation of waste and finished products; finally, clamping an identification sheet and packaging. The process realizes the full-process automation of "waste recycling-injection-taking-cooling-cutting-packaging", not only significantly improves the cooling uniformity and product size precision, avoids deformation and burrs, but also reduces the raw material cost through the recycling of runner waste, and has the advantages of high efficiency, stability and greenness.

The application discloses a kind of unmanned plane for fan tip lightning arrester detection, it is related to unmanned plane technical field, including fuselage, lens, detection unit and anti-interference unit, wherein fuselage is used to provide installation fixed base for lens, detection unit and anti-interference unit, lens is used to take picture, detection unit is used to crack detection of lightning arrester, anti-interference unit is used to avoid lens being contaminated, when unmanned plane detects fan tip lightning arrester, real-time image is taken by lens, surface lightning arrester is knocked and crack is detected by detection unit, dust, dirt, oxide layer and high-altitude water vapor condensate generated when detection unit works are blown away by anti-interference unit, avoid that pollutant is attached on the surface of lens, cause the situation that image is unclear appears, to improve detection accuracy.

The utility model discloses a lightning defense detection auxiliary rod, relates to the technical field of lightning defense equipment, and is used for solving the problem that wiring is inconvenient when a lightning arrester is powered. The lightning defense detection auxiliary rod comprises a hollow rod body, a wire, an abutting part, a universal joint and a supporting seat. A cavity is formed in the hollow rod body, the hollow rod body is provided with a first end and a second end, and openings communicated with the cavity are formed in the first end and the second end; the wire extends into the cavity, and the two ends of the wire extend out of the openings of the first end and the second end respectively. The abutting part is fixedly arranged at the first end of the hollow rod body, the abutting part is provided with an abutting cambered surface and an electric conductor, at least part of the electric conductor is located at the abutting cambered surface, the electric conductor is electrically connected with the wire, and the abutting cambered surface is used for abutting against the lightning arrester; the universal joint is arranged at the second end, and a gap is formed between the universal joint and the opening at the second end; the supporting seat is fixedly connected with the universal joint, and the supporting seat is rotationally connected with the hollow rod body through the universal joint.

The application provides a capacitor parallel type controllable lightning arrester device, and relates to the technical field of lightning control, which comprises an outer box, two groups of connecting electrodes are fixedly arranged in the middle of the outer box, a lightning arrester group is arranged at the top of the connecting electrodes, and a capacitor is connected to the outside of the connecting electrodes; two groups of positioning templates are arranged, and the two groups of positioning templates are fixedly arranged on the two sides of the inside of the outer box; a slope clamping block is arranged, an automatic on-off control function is provided, the pressure in the hollow electrode strip is gradually increased through the mode of extruding gas, the lowermost air expansion rod is first entered into the lowermost partition support to support the slope clamping block, the slope clamping block is further adhered to the slope clamping block, the sliding contact block is moved, the sliding contact block moves to the positioning template, the sliding contact block is adhered to the spring contact point, the connecting electrode, the capacitor and the hollow electrode strip are connected, rapid control is realized, and the problem that the existing device cannot be gradually automatically connected through integrated unified power is solved.

The application discloses a kind of generator seal mother insulation performance maintaining device, including hot air equipment, the hot air equipment is equipped with two air outlets, one air outlet of hot air equipment is connected with the air inlet of phase-separation seal mother by first air duct, and the air inlet of outlet PT cabinet, lightning arrester cabinet and excitation transformer cabinet is connected with the other air outlet of hot air equipment by second air duct respectively.The device is by first air duct and second air duct, and the hot air of hot air equipment is introduced into phase-separation seal mother, outlet PT cabinet, lightning arrester cabinet and excitation transformer cabinet respectively, realizes the synchronous dehumidification of multiple key equipment, and the coverage is extensive, can quickly reduce the humidity of relevant equipment, reduces the risk of damp, so that equipment quickly reaches the good insulation level required for starting, avoids the delay start grid connection accident caused by low insulation level, ensures that unit can be put into use in time, improves power generation efficiency.

The utility model discloses a kind of porcelain type insulator overvoltage protection live installation components, it is related to overvoltage protection technical field, it is characterized in that, including: symmetrical C-shaped clamping plate, adopt left and right split type structure design, include left plate, right plate, for accurate positioning and fixed;L-shaped plate, it is L-shaped, setting adjusting mounting hole and lightning arrester mounting hole, adjusting mounting hole is used for horizontal position adjustment, lightning arrester mounting hole is used for fixed lightning arrester, support flexible positioning adjustment;Positioning plate;U-shaped fixed bottom plate, is clamped in the gap between the bottom of insulator and the upper side of cross arm, the U-shaped fixed bottom plate matches the positioning plate and the symmetrical C-shaped clamping plate.The technical problem to be solved by the utility model is to provide a kind of porcelain type insulator overvoltage protection live installation components, can realize the quick disassembly and assembly operation to porcelain type insulator overvoltage protection under the live operation condition of power transmission line.

The application relates to the technical field of voltage measurement, in particular to a lightning arrester live detection voltage signal sampling joint which comprises a signal sampling line, an outer shell and a multifunctional joint. The signal sampling line comprises a wire, a sampling end and a BNC joint, the sampling end comprises a conductive column, an insulating skin wrapped around the periphery of the conductive column, a copper contact and a strong-suction magnetic steel ring. The outer shell comprises an upper shell and a lower shell, both of which are provided with containing grooves at one end close to each other, detection sleeves are arranged in the containing grooves, and the signal sampling line is clamped between the two detection sleeves. The multifunctional joint is detachably arranged at the rear end of the outer shell, a converter is arranged in the multifunctional joint, a self-detection assembly is arranged in the upper shell, a pressing assembly is arranged on the upper part of the multifunctional joint, and the self-detection assembly and the pressing assembly cooperate to conduct electric leakage detection on the signal sampling line. The application has the functions of signal sampling, equipment conversion and insulation self-detection, and can significantly improve the use safety and equipment compatibility.

The present application relates to lightning arrester intelligent monitoring technical field, specifically to a kind of lightning arrester lightning fracture risk intelligent monitoring system, system includes collecting lightning arrester tension electric field displacement disturbance data and rearranging section according to time, screening multi-source disturbance node and locating paragraph position, according to node number matching unmanned aerial vehicle continuous navigation section, extract corresponding image analysis brightness gradient and texture change, combine image and paragraph number cross relationship output lightning fracture risk section number.The present application is through the time series reorganization of tension, electric field, displacement disturbance data and paragraph number, constructs continuous disturbance structure, selects trigger node by the relationship of multiple physical quantity change, matches planning path according to node paragraph, compresses the range of inspection, identifies fracture suspect point by image gradient and texture change, combines the cross relationship of coordinate and outputs risk number section, enhances the coverage and traceability of risk identification.

The application provides an IGCT-based hybrid commutation converter valve and a valve assembly thereof, which can reduce or even avoid the influence on the performance of the converter valve caused by the consistency difficulty of the IGCT device. To solve the above technical problem, the application provides a hybrid commutation converter valve, which comprises a valve assembly, the valve assembly comprises a plurality of gate commutation thyristors arranged in sequence along a first direction, and the valve assembly further comprises a radiator row, the radiator row comprises a plurality of radiators arranged in sequence along the first direction; each gate commutation thyristor is clamped between two adjacent radiators; the valve assembly further comprises a lightning arrester assembly, the lightning arrester assembly comprises a lightning arrester unit, each lightning arrester unit comprises one lightning arrester or a plurality of parallel lightning arresters; each lightning arrester unit is connected with two adjacent radiators in the radiator row to be parallel to the gate commutation thyristor between the two adjacent radiators, and each gate commutation thyristor is parallel to a corresponding lightning arrester unit.

The present invention relates to a method for connecting an arrester (20) to the inside (11) of an electrode cap (10) of an electrochemical cell (100), wherein a tension mandrel (30) is pushed through an opening (12, 12') of the electrode cap (10) and / or through an opening (23) or recess (24) of the arrester (20), and the tension mandrel (30) is designed to form at least temporarily a mechanical connection between the tension mandrel (30) and the arrester (20) at a portion (31"), or is mechanically connected to the arrester (20), and an outward force (F) from the opening (12) of the electrode cap (10) is set on the tension mandrel (30), pushing the arrester (20) against the inside (11) of the electrode cap (10), and the arrested arrester (20) pushed against the inside (11) of the electrode cap (10) is connected to the electrode cap (10) in a particularly conductive manner.

The utility model discloses building roof lightning arrester connecting assembly, including setting in the lightning arrester connector of aluminium formwork top, the detachable connection between aluminium formwork and lightning arrester connector, the inner surface of aluminium formwork is fixedly connected with roof cornice through support piece, the inside of roof cornice is embedded with vertical metal pole, vertical metal pole is penetrated in the inside of aluminium formwork. Through the sliding of the limiting cylinder embedded in the lightning arrester connector in the inner surface of the guide groove, when sliding to the appropriate installation position, through the mutual corresponding between limiting cylinder and through -hole, through the threaded bolt and extends to the outside of horizontal metal pole by penetrating limiting cylinder and through -hole, finally is fastened on the outer surface of threaded bolt by fastening nut thread fastening, so that the lightning arrester connector and horizontal metal pole between fastening thread fit, replaced the inconvenient problem of welding dismounting, finally through the drainage of horizontal metal pole and vertical metal pole, reach the effect of lightning protection.

The utility model discloses a novel lightning arrester with stable structure relates to lightning arrester technical field, including insulating installation base, the top of insulating installation base is installed with lightning arrester body, the top of lightning arrester body is installed with equalizing ring through connecting mechanism, and the top of connecting mechanism and lightning arrester body are connected in cooperation, and the top of connecting mechanism is inserted with the protection mechanism for the protection of the top of connecting mechanism and is matched with the protection mechanism. The utility model discloses through the setting of connecting mechanism can increase the convenience of the connection between lightning arrester body and equalizing ring, through the collapsible connecting mechanism increases the convenience of the device in the transportation process, avoids the collision in the transportation process and leads to the deformation of equalizing ring and connecting mechanism, influences the assembly of device later period, in addition, the connecting mechanism that can expand can increase the connection cooperation degree between connecting mechanism and equalizing ring, and can improve the stress uniformity of equalizing ring, increases the overall stability and use intensity of device.

The utility model discloses a lightning arrester structure, including lightning arrester body, the lightning arrester body bottom fixedly connected with threaded rod, threaded rod bottom fixedly connected with connecting piece, and connecting piece is clamped and is connected with the connecting seat, and the connecting seat bottom is fixedly connected with the ball through the connecting rod, and the base includes the fixed plate, and the fixed plate top fixedly connected with the ball seat, and the ball seat is opened with the half ball nest that matches with the ball on, and the bottom rotation of ball is installed in the half ball nest, and the four lateral wall top ring of ball seat is connected with the vertical baffle, and the inner wall sliding of vertical baffle is established with two symmetrical connecting plates, and the one side of two connecting plates close each other all is fixedly connected with semicircular snap ring, and the inner wall of two semicircular snap ring all is closely combined with the top end outer wall of ball.

The utility model relates to the technical field of sealing support, concretely is a sealing structure of transformer box lightning arrester, the utility model discloses, including the lightning arrester body, the outside of lightning arrester body is equipped with sealing device, the sealing device includes the fixed ring, the inboard of fixed ring is fixedly connected with lightning arrester body, one end of fixed ring is fixedly connected with the sealing sleeve, one end of fixed ring is fixedly connected with the internal thread ring, the internal thread ring is connected with the external thread ring with internal thread, one end of external thread ring is fixedly connected with the connecting ring, one end of connecting ring is fixedly connected with the top cap, the one end fixedly connected with sealing washer of top cap near connecting ring, one end of fixed ring is fixedly connected with rubber ring. Solve the traditional transformer box lightning arrester sealing structure, more adopt simple single sealing ring structure, and the sealing effect is not good, and the problem that the poor sealing will make external moisture, moisture intrusion lightning arrester inside.

The utility model provides a kind of packing device, for packing lightning arrester, the first end of lightning arrester includes first mounting seat, the second end of lightning arrester includes second mounting seat, first mounting seat and second mounting seat are used to be installed in the ground line of electric power system by bolt, first mounting seat is provided with multiple installation through-hole for bolt passing;Packaging device includes bottom tray, top tray and fixed buckle, when packaging device is in the packaging state of lightning arrester packaging: first mounting seat is placed on the surface of bottom tray, the surface of bottom tray is connected with fixed buckle, part of fixed buckle is inserted into one installation through-hole of one first mounting seat;The second mounting seat of lightning arrester second end is in abutment with top tray. First connecting seat can be fixed on bottom tray by fixed buckle, to limit the movement and rotation of lightning arrester by fixing first connecting seat at the first end of lightning arrester, prevent lightning arrester from toppling over.

The embodiment of the application provides a lightning arrester deterioration detection method, device, equipment, medium and product, and is applied to the lightning arrester deterioration detection technical field. The method comprises the following steps: collecting time sequence data corresponding to a leakage current signal of a lightning arrester; based on the time sequence data corresponding to the current signal, a derivative order value is calculated; based on the derivative order value, a derivation operation is performed on the time sequence data to obtain a first derivation operation result; based on the first derivation operation result, data conversion is performed to obtain a first derivative processing signal; a deterioration feature is extracted based on the maximum value of the first derivative processing signal; when the deterioration feature is effective and the deterioration feature exceeds a first preset threshold value, it is determined that the lightning arrester is in a deterioration state. The technical effect of improving detection accuracy is achieved.

Embodiments of the present application provide a kind of resistance sheet's impact aging test data processing method and storage medium.The method comprises: obtaining multiple lightning arrester simulation impact current waveform data;Determine test loop;Obtain the impact aging test data of multiple resistance sheet test products;According to impact aging test data, construct test database;According to the test database of each resistance sheet test product, aging characterization processing is carried out, and the aging judgment result of each resistance sheet test product is obtained;According to the impact aging test data of multiple resistance sheet test products and initial intelligent prediction model, model training is carried out, and target intelligent prediction model is obtained.Through the process of data preprocessing, logarithmic linearization, regression calculation, dynamic prediction, the accuracy of the life prediction of the aging process of resistance sheet in lightning arrester is effectively improved.

The present disclosure relates to the technical field of lightning arrester protective sleeve, and one embodiment of the present disclosure provides a lightning arrester protective sleeve suitable for live working installation of power distribution network, which comprises a pair of protective sleeves, a pair of upper bolts and a pair of lower bolts, the upper bolts and the lower bolts are arranged on the protective sleeves, a sleeve tightening assembly is arranged between the protective sleeves, a wire assembly is arranged on one of the protective sleeves, the sleeve tightening assembly comprises a sealing layer, the sealing layer is arranged on the surface of the protective sleeve, the protective sleeves are attached through the sealing layer, the upper bolts and the lower bolts are screw-connected between the sealing layers, and a pair of clamping grooves are formed in the end faces of the sealing layers. Through the above technical scheme, the technical problem that the body type protective sleeve needs to be entirely sleeved from the top end of the lightning arrester during installation, and it is extremely difficult to install or even impossible to operate when the bottom of the lightning arrester is connected with complex lines or the space is narrow is solved.

The application discloses a lightning arrester insulating base and a lightning arrester, and belongs to the technical field of lightning arrester installation. The lightning arrester insulating base comprises an insulating mounting base, an angle adjusting part arranged at one end of the insulating mounting base, a rotating disc rotatably connected with the insulating mounting base, a clamping plate two adjustably arranged on the outer side of the rotating disc, a clamping plate one arranged on one side of the clamping plate two, a fixing bolt arranged between the clamping plate one and the clamping plate two, and an anti-loosening part arranged on the outer side of the clamping plate two and used for preventing the fixing bolt from loosening. First-stage adjustment is achieved by cooperation of a rotating shaft, a limiting disc two and a limiting bolt two, so that the rotating disc can be horizontally rotated around the axis of the rotating disc, and horizontal angle compensation of the installation direction of the lightning arrester is realized. Second-stage adjustment is achieved by cooperation of a limiting disc one and a limiting bolt one in the middle of the rotating disc, so that the clamping plate two can be swung around the rotating shaft, and the elevation angle of the lightning arrester can be adjusted. The two-stage adjustment is independent and does not interfere with each other, and can meet the differentiated needs of different installation sites for the installation angle of the lightning arrester.

1. The name of the design product: outdoor AC metal oxide surge arrester. 2. The use of the design product: for protecting power transmission lines and electrical equipment from overvoltage damage, and enabling automatic shedding after arrester failure. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a lightning stroke protection device of single loop straight line tower relates to power equipment protection technical field. This lightning stroke protection device of single loop straight line tower, including base, the top of base is fixedly connected with lightning arrester, the top of base is fixedly connected with installation subassembly and reinforcing component, through setting up the installation subassembly who constitutes by fixed plate, insert block, spring and fixed block, when installing lightning arrester, only need to press first handle and drive insert block to contract, after loosening handle with connecting piece clamping groove aiming at insert block, spring pushes fixed block and drives insert block to be inserted into clamping groove, and spring continues to provide the thrust and makes insert block and clamping groove keep the close clamping state of joint, avoids the loosening of lightning arrester in the lightning process due to vibration, can complete the fixed connection of lightning arrester and base fast, when disassembling, can separate also by pressing handle, reduces installation maintenance time cost, prolongs the service life of lightning arrester, improves installation efficiency, is convenient for lightning arrester overhaul or replacement.

The utility model discloses a low -voltage lightning arrester upper and lower electrode assembly frock relates to lightning arrester assembly technical field, the utility model discloses a workbench is established in the center position with fixed groove, the outside annular equidistance of fixed groove is provided with four sets of positioning assembly, and the outer surface of workbench is provided with twist lock subassembly. The utility model discloses through the setting of positioning assembly, the fixed groove for temporarily limiting and stabilizing lightning arrester that is established in the workbench, through the elastic lower adhesion on the outer wall of lightning arrester of the guiding of positioning block and the first spring, further improved the stability of lightning arrester and the subsequent assembly work carry out conveniently, and through the cooperation of positioning block and second sliding slot, the lightning arrester is conveniently fixed and taken quickly, can be widely used in the assembly of various lightning arrester, through setting twist lock subassembly, convenient with taking while also avoiding the loss of electric screwdriver, also greatly reduced the assembly operation difficulty, improved product assembly efficiency.

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 embodiment of the application provides a kind of intelligent high-voltage integrated device, high-voltage state monitoring system and railway vehicle, intelligent high-voltage integrated device includes box, the box is divided into high-voltage area and low-voltage area by partition, vacuum circuit breaker, grounding switch, first voltage transformer, second voltage transformer, cable terminal, arrester and disconnecting switch are provided in the high-voltage area, the low-voltage part of vacuum circuit breaker and the low-voltage part of disconnecting switch are provided in the low-voltage area;The application can check the vacuum degree of vacuum package of vacuum circuit breaker and quickly determine the working state of two voltage transformers by comparing the measurement values of first voltage transformer and second voltage transformer, improve the reliability of the device, avoid to reduce EMU high-voltage system failure.

The utility model discloses an insulating buckle quick -mounting type lightning arrester relates to the field of lightning arrester, including lightning arrester main part, is equipped with the insulating connecting frame on lightning arrester main part and is fixed, and the insulating connecting frame is by insulating substrate, square inserting rod and cylinder and is composed, and square inserting rod fixed mounting is at the lower extreme of insulating substrate, and the cylinder fixed mounting is at the lower extreme of square inserting rod, and the insulating connecting frame is installed with insulating stop piece, and the insulating stop piece is by L shape insulating board, bottom supporting plate, connecting block, metal elastic buckle, connecting square pole, spring pressure plate and stop spring and is composed, through setting up insulating connecting frame, insulating stop piece, need not use bolt and spanner and the like tool, only need when installing, square inserting rod on insulating connecting frame is inserted into the installation square hole of insulating support, and under the action of limiting spring, make metal elastic buckle card in cylinder, at this moment, have completed the lightning arrester main part fixed mounting on insulating support, greatly simplified operation step, saved installation time.

This invention relates to the field of power system lightning protection technology, specifically to a lightning protection device and method for extinguishing arcs by blowing air through a tortuous channel. The lightning protection device includes multiple lightning arrester units, a high-voltage electrode, and a low-voltage electrode. The multiple lightning arrester units are vertically connected end-to-end, with discharge electrodes at the connection points. Each lightning arrester unit includes an insulating main shaft and sheds spaced apart outside the insulating main shaft. A tortuous channel is provided inside the insulating main shaft, with air inlets formed at the corners of the tortuous channel. Gas-generating components are located between adjacent air inlets within the tortuous channel, without blocking the tortuous channel. The high-voltage electrode is located at the top of the lightning arrester unit at the top; the low-voltage electrode is located at the bottom of the lightning arrester unit at the bottom. The top of the tortuous channel is connected to either the high-voltage electrode or the discharge electrode, and the bottom is connected to either the low-voltage electrode or the discharge electrode. The tortuous channel extends the flashover path, facilitating rapid cooling. During flashover, the gas-generating components release gas upon heating, which blows out the arc within the channel.

The present application relates to a kind of lightning arrester live installation state monitoring methods, in the lightning arrester ground down line arrangement broadband current measurement unit obtains current signal, voltage reference measurement unit is set at high voltage end and obtains voltage reference signal;Before installation starts, current signal is collected at first time window to obtain background noise level and set pulse event threshold, the threshold is updated with background;Current signal is continuously monitored during installation, when the pulse with amplitude exceeding threshold and duration shorter than set upper limit is detected, it is recorded as candidate contact event;Stability check is carried out to voltage reference signal in second time window before and after the candidate contact event, and it is confirmed as first electrical contact event if check is passed, and it is determined that electrical contact loop has been formed, otherwise it is rejected;If first electrical contact event is not confirmed within observation time limit, it is output that electrical contact loop has not been formed.Electrical contact state of lightning arrester can be reliably identified under live installation condition, and real-time state criterion is provided for on-site installation operation.