154results about "Discharge by conduction/dissipation" patented technology

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 invention relates to the technical field of lightning protection, in particular to a positioning clamp for an ancient building lightning protection device, which comprises a mounting seat, a plurality of support frames are rotatably connected to the mounting seat, a cornice clamp mechanism is rotatably connected to one end of each support frame, and a protective seat is movably clamped to one support frame. A mounting frame is rotationally connected in the protection seat, a lightning rod is rotationally connected in the mounting frame, a retracting and releasing mechanism is rotationally connected to the inner wall of one end of the mounting frame, and an arc-shaped brush plate is arranged in the mounting frame in a sliding fit mode. The lightning protection device is installed on the ancient building pavilion, has higher adaptability, stability and attractiveness, can accurately adapt to a cornice structure, avoids damage to a building, improves installation convenience, improves safety and stability of the lightning protection device, and ensures the lightning protection effect of the pavilion and building integrity.

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.

According to the lightning counterattack prevention system for the unmanned aerial vehicle nest on the power transmission line iron tower, the nest shell is in insulated connection with the iron tower, the voltage generated when lightning current is discharged to the nest can be directly reduced, the counterattack probability is reduced, meanwhile, a grounding terminal is arranged in a matched mode, the shell is directly connected with a down lead of an iron tower footing, and if redundant lightning current exists, the lightning counterattack probability is reduced. And the down lead is continuously released, so that the safety of the nest is ensured.

An optimized PLP placement method for plateau and mountain wind farms is provided. Starting from the outermost wind turbines, it measures turbine parameters. Firstly, install the first PLP to safeguard the outermost ones. Then, combine its parameters with those of the tallest turbine near the center to set up the second PLP, protecting turbines within a connection range. Next, use the previous step's parameters and those of the tallest turbine in the vertical area of the first two PLPs' plane to install the third PLP, shielding turbines in the area formed by three points. Repeat until covering the whole farm. Many cases prove its reliability, economy and suitability for wide application in optimizing PLP placement.

The invention discloses a power system overvoltage protection device, and belongs to the technical field of power overvoltage protection. An overvoltage protection device of a power system comprises a main lightning arrester, a standby lightning arrester and a supporting frame used for bearing the main lightning arrester and the standby lightning arrester, the standby lightning arrester is detachably connected with the supporting frame through a second separation assembly, a first separation assembly is arranged on the lower portion of the main lightning arrester, and a second separation assembly is arranged on the lower portion of the standby lightning arrester. The first separating assembly is detachably connected to the second separating assembly through the connecting assembly. According to the invention, through the arrangement of the standby lightning arrester, the standby lightning arrester can be temporarily used as the main lightning arrester on the top of the standby lightning arrester after the main lightning arrester breaks down and then falls off through the first separation assembly, so that the vacuum period of protection is reduced; therefore, the problem that in the prior art, a drop-type lightning arrester for overvoltage protection has a protection vacuum period after a fault is solved.

The invention discloses an uninterruptible power lightning arrester automatic installation tool based on an insulating rod operation method, and relates to the technical field of electrical equipment installation tools. Comprising a drainage wire clamp mounting mechanism, a power supply electric control mechanism, a lifting distance adjustment assisting mechanism, a lightning arrester holding claw mechanism and a lightning arrester connecting piece. A voice control module is embedded into the power supply electric control mechanism, so that single-person remote operation is realized; the lightning arrester connecting piece can adapt to various insulators and cross arms, and can be fixed without dismantling the insulators; the lifting distance adjusting power-assisted mechanism is matched with a moving roller through an electric push rod to realize position and height adjustment; the lightning arrester holding claw mechanism can avoid umbrella skirts to stably clamp different types of lightning arresters; the drainage wire clamp installation mechanism completes installation of a drainage wire clamp and bolt tightening. The device is high in adaptability and convenient and efficient to operate, can work in a non-power-off state, guarantees stable power supply, improves the installation quality and efficiency, reduces the labor intensity and the safety risk, and effectively overcomes many defects of an existing installation tool.

The invention discloses an ancient building lightning protection system and method based on a lightning early warning device, and belongs to the technical field of lightning protection systems, and the system comprises a sensing layer, a decision layer, an execution layer and a digital twin platform. The sensing layer collects multi-mode environmental parameters through an annular atmospheric electric field monitoring array, a broadband electromagnetic pulse sensor and a meteorological sensor. The decision-making layer fuses data and outputs four levels of risk levels through the risk prediction model of the ancient building LSTM combined attention mechanism, and generates a protection instruction; and the execution layer adopts a bionic hidden lightning receiving device (hidden in a non-working state), a passive corona field lightning driving device and a multi-stage historic building SPD, and responds according to a grading strategy. The digital twin platform constructs a high-precision model, and realizes data visualization and protection strategy simulation optimization. Passive lightning protection is converted into active intelligent protection, the situation that a traditional device destroys the style and appearance of an ancient building is avoided, secondary damage caused by lightning stroke is reduced, self-learning optimization can be achieved, and the requirements for safety and cultural relic protection are met.

The application discloses a lifting type independent lightning protection device, which comprises a lifting mast arranged vertically and a supporting column, an unlocking cylinder connected with each locking pin control is arranged in the lifting mast, a control box and a gas pump are arranged in the supporting column, the gas pump is connected with the lifting mast control, a lightning rod body is detachably arranged on the top of the unlocking cylinder, a guide shaft is coaxially connected between the lightning rod body and the unlocking cylinder, a piston assembly is arranged on the guide shaft, and a self-locking device is arranged on the outside of the abutting position of the mounting seat and the piston assembly. The application has the advantages of simple structure, convenient disassembly, stable connection, flexible lifting adjustment of the lightning protection device, and convenient rapid installation, maintenance and repair.

The present invention provides a wind turbine blade shell part for a wind turbine blade, the blade shell part comprising: a structural element providing structural strength to the blade shell part and comprising carbon fibres embedded in a polymer matrix; a lightning receptor exposed at an outer surface of the blade shell part and extending towards the structural element; and an electrically conductive adhesive attaching the lightning receptor to the structural element. A method for manufacturing such a blade shell part is also provided.(FIG. 8C)

The application discloses an OPGW distribution line lightning attracting protection device and a use method thereof, wherein the device comprises a composite insulator umbrella skirt, a lightning attracting rod fixed on the composite insulator umbrella skirt, a lightning guiding rod matched with the lightning attracting rod and a connecting mechanism. The connecting mechanism comprises an adjusting assembly. The adjusting assembly comprises an insulating porcelain seat fixedly connected at the bottom end of the composite insulator umbrella skirt. A U-shaped guide rail is fixedly connected to the side surface of the insulating porcelain seat. An end seat is movably connected to the inner side of the U-shaped guide rail, and clamping grooves are formed in the two sides of the inner wall of the U-shaped guide rail. Clamping edges are arranged on the two sides of the surface of the end seat. The two clamping edges are slidably connected in the same side clamping groove, and the connection between the clamping edges and the clamping groove is lockable. The lightning guiding rod is fixedly connected to the end seat. In use, the connection between the clamping plate and the clamping groove is only unlocked, and then the gap distance between the lightning guiding rod and the lightning attracting rod can be adjusted by pushing the end seat to move, so that the adjusting efficiency is better than that of continuous screwing adjustment.

The invention relates to the technical field of power transmission line lightning protection, in particular to an active and passive cooperative lightning protection system and method for a power transmission line, and aims to judge whether lightning affects the power transmission line or not, perform early warning on the power transmission line with a lightning stroke risk, and execute corresponding active lightning protection measures; according to lightning activity data of an electric field and related data of previous lightning strokes of the electric field, on the other hand, the power transmission lines are divided into different risk levels, passive lightning protection measures are taken for the different power transmission lines according to the corresponding risk levels, and the passive lightning protection effect of the power transmission lines is improved; the lightning protection effect of the power transmission line is further improved, and the actual operation lightning protection requirement is met.

The present invention provides a line gap lightning arrester installation auxiliary device, wherein the support structure of the line gap lightning arrester installation auxiliary device includes a telescopic portion so that the height of the support structure can be adjusted; a first wearing structure is used for being worn by a foot and is arranged on one end of the support structure; a height adjustment structure is arranged on the support structure, and the height adjustment structure includes a driving member, a ratchet assembly and a transmission assembly. The driving member is driven and connected to the telescopic portion through the ratchet assembly and the transmission assembly. The driving member is rotatably arranged so that when the driving member rotates in a first direction, the telescopic portion is driven to extend through the ratchet assembly to adjust the height of the support structure; wherein the driving member has an abutting end, and when at least part of the support structure is tilted in a preset direction under the drive of the foot, the abutting end abuts against the working surface to rotate the driving member in the first direction. The present invention effectively solves the problem of low installation efficiency of line-type lightning arresters in the prior art.

The invention relates to the technical field of line lightning protection, in particular to an overhead transmission line lightning arrester and an installation method.The overhead transmission line lightning arrester comprises two bases used for being installed on a cross arm, and an n-shaped plate is clamped between the two bases and fixedly arranged through bolts; a first lightning arrester and a second lightning arrester which are used for lightning protection of the power transmission line are installed on the n-shaped plate, connecting plates are installed at the tops of the first lightning arrester and the second lightning arrester, and a first fixing clamp, a second fixing clamp and a wire clamp which are used for being installed on the line are installed on the connecting plates; an overhead line is arranged among the first fixing clamp, the second fixing clamp and the wire clamp in a penetrating mode, the first lightning arrester is located on the two sides of the n-shaped plate, the second lightning arrester is located in the middle of the n-shaped plate, the first lightning arrester and the second lightning arrester are connected with on-line monitoring devices on the n-shaped plate, and the lower ends of the on-line monitoring devices are connected with discharge counters. The device has the advantages of being compact in structure, convenient to replace parts and capable of stably operating for a long time in an extreme environment.

The present invention discloses an adjustable lightning arrester bracket for wind power generation equipment, which relates to the technical field of lightning protection for wind power generation equipment, and comprises a supporting body, including a supporting tube, a plurality of supporting columns in a circumferential array, a lightning arrester assembly, an adjustment base, and a limit ring; an adjustment unit, including an adjustment member, a transmission member, a steering assembly, a grounding base, a transmission assembly, a main needle, and a plurality of groups of oblique needles. The beneficial effects of the present invention are to achieve the adjustment of the angles of the main needle and the oblique needle on the wind turbine, expand the range of protection of the lightning rod, and ensure that the direction of connection between the lightning rod and the lightning is consistent, increase the rate of conducting electricity, improve safety performance, and at the same time be able to change the outer diameter of the main needle and the oblique needle, improve the ability of local lightning protection, or expand the range of lightning protection, connect the main needle with the oblique needle and the single lightning arrester in series, thereby further reducing the risk of equipment damage to improve the lightning protection capability of the equipment.

An assembly (1) of variable-pitch blades for an unfaired aircraft turbomachine, the assembly comprising a rotor (3) movable about a radial axis (X) of the turbomachine, a stator (4) fixed about said radial axis (X), and at least one lightning arrester (5). The lightning arrester (5) comprises a pin (6), at least one face of said pin (6) being in contact by friction with the rotor (3), a screw (7) radially extending from said pin (6), and a means (8) for connecting the pin (6) and the screw (7), said means (8) comprising a spring interposed between the pin (6) and the screw (7). Figure for the abbreviation: Fig 1

The invention relates to the technical field of lightning protection equipment, and discloses a self-energy-consumption intelligent lightning arrester which comprises a stand column, a steel pipe fixedly installed on the stand column, a trigger device fixedly installed on the outer side of the steel pipe, an installation base fixedly installed on the trigger device, and a central collection needle fixedly installed on the steel pipe located in the installation base. A pressure equalizing mechanism is arranged on the mounting seat and comprises a lower mounting ring and an upper mounting ring, and the lower mounting ring and the upper mounting ring are fixedly connected through a plurality of connecting screw rods. A plurality of excitation needles are arranged on the voltage-sharing rod, so that an electric field around the voltage-sharing rod is more concentrated, the intensity of the electric field at the needle point is stronger, the air ionization effect is better, the thunder and lightning attraction capability is stronger, the opportunity of contact with thunder and lightning pilot is increased, the shielding failure possibility is reduced, fine adjustment of electric field distribution is realized, corona discharge is reduced, more discharge channels are provided, and the speed of thunder and lightning flowing into the ground is increased; and meanwhile, discharge flashover is guided between the needle bodies, so that the grading ring body is protected.

A lightning protection device of a tethered balloon communication system, comprising: a lightning protection net, a shielding layer, a protection circuit; the lightning protection net wraps the tethered balloon; the shielding layer is installed outside the communication module and the communication line of the tethered balloon and is connected with the lightning protection net; the protection circuit is connected inside the communication module and is used for protecting common mode and differential mode interference caused by lightning; the lightning protection net arranged outside the tethered balloon, the shielding layer and the protection circuit arranged inside the communication module are designed according to the characteristics of the communication system in the tethered balloon, the communication module and the communication line are treated in all directions, the damage caused by lightning to the communication module of the tethered balloon and the radiation and conduction interference in the lightning process are effectively reduced, the normal work of the communication module in the lightning process is ensured, and the accuracy and reliability of data transmission are ensured.

The application discloses a lightning arrester replacing assembly, and relates to the technical field of lightning arrester replacing, which comprises an insulating column body, the two ends of the insulating column body are respectively provided with a conductive part and a fixing support, a lightning arrester body connecting assembly is arranged between the conductive part and the fixing support, the lightning arrester body connecting assembly comprises a support frame which is provided with a clamping groove and is fixedly connected with the fixing support, a rotating shaft is tightly connected in the clamping groove, a first connecting part is fixed on the rotating shaft, a second connecting part is fixed on the lightning arrester body, a fixing assembly comprises a through hole which is arranged on the second connecting part, guide columns are slidably connected on the first connecting part, guide cylinders are slidably connected with the opposite ends of the two guide columns through push rods, a pre-tightening assembly comprises two positioning plates which are slidably connected with the rotating shaft, air grooves are arranged in the positioning plates, and the guide cylinders are communicated with the corresponding air grooves through pipes; the lightning arrester can be quickly replaced, and the lightning arrester can be kept in a stable state.

A live-line working, fully insulated, separable gapless surge arrester device comprises: a piercing, detachable insulated clamp, a high-voltage lead, a lightweight insulating cavity, an upper contact, an upper insulated waterproof piston ring, the arrester body, a lower insulated waterproof piston ring, an insulating sheath, a contact ring, a contact piece fixing ring, a contact piece, an elastic tension spring, a metal bracket, an insulating bracket, a disconnector connection bracket, a disconnector, a disconnector itself, and a lead wire connection terminal. It is mainly used for overvoltage protection of power distribution lines. The insulated operating rod allows for live-line installation and removal of the arrester body and disconnector, improving installation and maintenance efficiency. The disconnector temporarily isolates power frequency current and clearly indicates the fault point, reducing losses caused by power outages due to grounding short circuits. The disconnector connection bracket facilitates live-line separation and replacement of the disconnector. The device is fully insulated, improving the insulation process of the line. The piercing, detachable insulated clamp facilitates live-line installation and removal, eliminating the need to strip the insulation from the conductor, thus improving installation efficiency and line insulation.

The invention relates to the technical field of lightning arresters, in particular to a high-voltage lightning arrester convenient for high-altitude installation. Comprising a high-voltage lightning arrester, an installation base is arranged at the bottom of the high-voltage lightning arrester, two holes are formed in the installation base, a fixing plate is installed on the installation base in a matched mode, a screw rod is arranged below the holes of the installation base plate, the bottom of the screw rod is fixedly connected with a U-shaped plate through a bolt, and the U-shaped plate is connected to the installation base plate in a sliding mode. By arranging the blind insertion mechanism, the screw rod can be quickly inserted between the holes of the mounting bottom plate and the fixing plate in a blind manner, so that the hole alignment efficiency and the mounting efficiency are remarkably improved; and through the arrangement of an abutting frame and a second spring, the U-shaped plate can be abutted instead of a human hand, and the installation efficiency and convenience are improved. By arranging the hook column and the rope winder, the convenience of hoisting a plurality of high-voltage lightning arresters by the unmanned aerial vehicle is improved; the positions of the mounting frame and the rope winder can be limited through the clamping assembly, and when the U-shaped plate moves upwards, the extrusion frame is extruded and rotated through the extrusion strip.

The invention provides a 10kV power distribution network overhead insulated wire breakage prevention device. The 10kV power distribution network overhead insulated wire breakage prevention device comprises a lightning protection filter, an insulated wire guide binding wire and a 10kV insulated wire. The insulated wire guides the binding wire to be wound on the surface of an insulating layer of the 10kV insulated wire, and one end of the insulated wire is connected with the upper end of the lightning protection filter; and the lower end of the lightning protection filter is connected with a grounding grid through a ceramic resistor. According to the invention, the binding wire is guided to wind the surface of the insulating layer of the 10 kV overhead cable through the overhead insulated wire, so that the high-frequency component of lightning current is guided to be discharged from the filter preferentially, and the high-frequency component of the lightning current is absorbed through the bipolar plate effect in the filter and the high-frequency absorption effect of the barium titanate phase-change material. The high-current arc striking effect on the insulated wire under lightning stroke can be effectively improved, the wave head voltage of steep waves of lightning current is rapidly reduced, and lightning stroke trip-out faults caused by disconnection of the insulated wire of a distribution line and lightning stroke flashover under lightning stroke are reduced.

The invention provides a shock insulation support and thunder and lightning protection integrated structure, and relates to the technical field of constructional engineering, the shock insulation support and thunder and lightning protection integrated structure comprises a lower connecting steel plate, the upper surface of the lower connecting steel plate is fixedly connected with a shock absorption laminated layer, the center of the shock absorption laminated layer is provided with a trigger mechanism, and the upper surface of the shock absorption laminated layer is fixedly connected with a lower supporting plate; a connecting mechanism is arranged at the edge of the upper surface of the lower supporting plate, a rotating shaft is rotationally connected to the center of the lower supporting plate, an inner rotating plate is fixedly connected to the middle of the outer surface of the rotating shaft, the vibration amplitude is accurately recognized through a trigger mechanism, the connecting mechanism is linked to unlock a clamping assembly, and the relative position of the upper supporting plate and the lower supporting plate can be flexibly adjusted; and the inner rotating plate is driven to turn to the stress side and is matched with the supporting mechanism to form transverse and longitudinal double reinforced supporting, and the effects that the building transverse movement amount can be effectively limited, support dislocation is avoided, and the structural safety under high-intensity earthquakes is remarkably improved are achieved.

The invention describes a lightning receptor assembly (1) for a wind turbine rotor blade (20), comprising a receptor unit (10R, 10B) comprising a receptor base (10B) for installation in the rotor blade interior (200) and a receptor (10R) for placement at an outer surface (20S) of the rotor blade (20); a threaded connector (11) to form a mechanical connection between the receptor (10R) and the receptor base (10B); and a conductive band (12) adapted to extend over the outer surface (20S) of the rotor blade (20) and to form an electrical connection to the receptor unit (10R, 10B) without requiring removal of the receptor (10R) from the receptor base (10B). The invention further describes a wind turbine (2) and a method of preforming a maintenance procedure on a lightning receptor assembly (1) of a rotor blade (20) of a wind turbine (2).

The invention discloses a lightning protection type outdoor switch cabinet, relates to the field of switch cabinets, and solves the problem that a lightning rod of an existing switch cabinet is difficult to overhaul, the lightning protection type outdoor switch cabinet comprises a switch cabinet body and a mounting plate mounted on the outer side of the switch cabinet body, a mounting box is mounted on the inner side of the mounting plate, and the lightning rod is arranged on the inner side of the mounting box; the top of the switch cabinet body and the top of the mounting box are provided with mobile through holes, the bottom of the lightning rod is provided with a lead, and one end of the lead is provided with a grounding grid. The positioning mechanism is used for moving and storing the lightning rod, and the positioning mechanism is mounted on the inner side of the mounting box; according to the invention, the lightning rod can be collected into the switch cabinet body through the position adjusting mechanism, thereby facilitating the maintenance of a worker without climbing, enabling the lightning rod to move upwards to the top of the switch cabinet body through the moving through holes in the installation box and the switch cabinet body, and guaranteeing the protection of the lightning rod on the switch cabinet body. Therefore, the effect of improving the maintenance safety of the lightning rod is achieved.

The present invention discloses an arc-shaped roof photovoltaic installation system. The photovoltaic panels are arranged along the ridge direction perpendicular to the arc-shaped roof panel. Along the ridge of the arc-shaped roof panel, support keels are also fixed. The support keels are arranged at intervals along the direction perpendicular to the ridge. A number of connecting seat plates I and connecting seat plates II are also arranged at intervals on the support keels. The connecting seat plate I is detachably and fixedly connected to the support keel. The connecting seat plate I and the connecting seat plate II are connected by a set screw connector. And the connecting seat plate II rotates within a set range along the arc direction of the arc-shaped roof panel with the set screw connector as the rotation axis. The upper end of the connecting seat plate II is adhesively fixed to the lower end face of the photovoltaic panel through structural adhesive. In the present invention, the support keels are arranged along the ridge direction of the arc-shaped roof panel, and then the photovoltaic panels are fixed to the connecting seat plate II, greatly increasing the laying area of the photovoltaic panels and the light energy conversion efficiency, and enabling crystalline silicon photovoltaic modules to cope with various special-shaped roofs and arc-shaped roofs.

The invention relates to a variable-pitch blade assembly (1) for an open-rotor turbine engine of an aircraft, the assembly comprising: a rotor (3) which is movable relative to a radial axis (X) of the turbine engine; a stator (4) which is stationary relative to the radial axis (X); and at least one lightning protection system (5). The lightning protection system (5) comprises: a pin (6), at least one face of the pin (6) being in frictional contact with the rotor (3); a screw (7) which radially extends the pin (6); and a means (8) for connecting the pin (6) and the screw (7), the connecting means (8) comprising a spring inserted between the pin (6) and the screw (7).

The present disclosure relates to a lightning protection device, a lightning protection system, a wind power generator set, and a method. The lightning protection device includes a transition conductor with a predetermined length, width and thickness, the transition conductor comprising a first connecting end and a second connecting end opposite to each other in its length direction, the first connecting end being used for receiving lightning current, and the second connecting end being used for connection with a down lead system. The transition conductor includes a thinned area and an edge area, the edge area surrounds at least a portion of the thinned area, one side of the edge area and one side of the thinned area in the length direction are connected and jointly form the first connecting end, and a thickness of the thinned area is less than that of the edge area. The lightning protection device, the lightning protection system, the wind power generator set, and the method of the present disclosure can adapt to a skin effect of current and improve overall safety performance.

The invention provides a transformer with a lightning protection assembly, and belongs to the technical field of transformers, the transformer comprises a transformer body, a telescopic protection pipe fitting, a first driving assembly, a second driving assembly and a lightning rod, the lightning rod is movably arranged on the side of the transformer body, and the lightning rod is grounded through a grounding wire; the lightning rod is movably sleeved with the telescopic protection pipe fitting, the first driving assembly and the second driving assembly are installed on the side wall of the transformer body, and when the lightning rod needs to play a role, the second driving assembly drives the telescopic protection pipe fitting to be shortened, and the telescopic protection pipe fitting is driven to be in a closed state. And the telescopic protection pipe fitting is removed from the outside of the lightning rod. Compared with the prior art, when the lightning rod does not need to play a lightning protection role, the lightning rod can be stored and protected, meanwhile, the influence of strong wind on the lightning rod is reduced, and the service life of the lightning rod is prolonged.

The invention provides a lightning rod, in particular for use in a support profile for photovoltaic panels, a corresponding support profile and a corresponding photovoltaic arrangement. The lightning rod (6) comprises a metal rod (61) and an optional sleeve (62) arranged at the lower end of the metal rod (61). The sleeve or the metal rod can be screwed into a central groove of the support profile via a threaded rod and a nut or via a threaded hole and a screw. The support profile (1) comprises a main body (3) with a bottom side for setting up on or in a fastening rail (7) and an upper side for supporting and fastening the PV panels (2), wherein the upper side has two outer grooves (4) for fastening the respective PV panels (2) and a central groove (5) for fastening the lightning rod (6).