104 results about "Surge arrester" patented technology

This invention relates to the field of DC circuit breakers, and discloses a thyristor-type DC circuit breaker and its control method. The DC circuit breaker structure is a thyristor T... m1 Anode-connected thyristor T m2 The cathode forms the A terminal of the circuit breaker, T m1 Cathode connection T m2 The anode of the thyristor forms the B terminal of the circuit breaker; the thyristor T p1 anode, thyristor T p2 The cathode is connected to terminal A; T p1 Cathode connection T p2 After anode, it passes through resistor R in sequence. g Switch RCB g Grounding; T p1 Cathode connection T p2 After the anode, it also passes through inductor L p Capacitor C is connected to terminal B; one end of the surge arrester MOV is connected to terminal T. p1 The cathode is connected to the first terminal, and the other end is connected to the B terminal. This invention has a simple structure and significant cost advantages; under normal operating conditions, only a single thyristor is conducting, resulting in extremely low losses and extremely high circuit breaker efficiency. Combined with control methods, it can actively and reliably connect or disconnect bidirectional operating current or bidirectional fault current; it can also achieve fast reclosing functionality.

The utility model discloses a lightning arrester convenient to installation, including bottom plate, set up the lightning arrester subassembly of bottom plate top, the plug -in post of both sides of bottom plate top fixed connection, the top of plug -in post extends to the top of lightning arrester subassembly, the both sides of bottom plate top front side all are fixedly connected with installation mechanism, the installation mechanism is including two limit boards, the inside of limit board is provided with positive and negative toothed lead screw and passes through, the both sides of positive and negative toothed lead screw surface all are fixedly connected with silk cover and are connected with silk cover, the bottom fixedly connected with the slide of silk cover, the bottom of slide and bottom plate slidingly connected.

1. Name of the product in this design: Surge arrester diagnostic instrument controller (10kV). 2. Purpose of this design: To control a surge arrester diagnostic instrument and convert diagnostic data into diagnostic information that can be evaluated. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This utility model relates to a surge arrester shielding device, including an insulating cover. The insulating cover comprises two bodies, which are combined to form a platform shape. The interior of the insulating cover is hollow, and both the top and bottom ends are missing. A connecting plate is provided on the outer side of each of the two bodies, and the two connecting plates are hinged together by a hinge shaft. A locking assembly is provided on the outer side of the two bodies, opposite to the connecting plate. This surge arrester shielding device uses a platform-shaped shielding cover with different opening diameters at the top and bottom. It can fit onto the outer side of surge arrester flanges of different sizes, eliminating the need for custom-made insulating covers for different sizes of surge arresters. When the flange diameter varies within a certain range, the platform-shaped conical shielding cover can adaptively wrap by adjusting its height. This avoids the problems of traditional cylindrical insulating covers being too loose and causing leakage, or too tight and difficult to install, which are caused by fixed dimensions. It significantly reduces the types of spare parts and lowers equipment management costs.

This disclosure relates to a method, apparatus, equipment, and medium for configuring surge arresters in a wind farm. The method includes: determining a lightning withstand level score and a lightning attraction trend score for each tower in the wind farm; determining multiple initial surge arrester configuration schemes for multiple towers in the wind farm, based on whether surge arresters are installed or not; for each initial surge arrester configuration scheme, determining a target evaluation score for the initial surge arrester configuration scheme based on the lightning withstand level score and lightning attraction trend score of each tower; and determining a target surge arrester configuration scheme from the multiple initial surge arrester configuration schemes based on the target evaluation score. This disclosure can scientifically and efficiently select the optimal target surge arrester configuration scheme.

This invention discloses a magnetically aspirated insulating sleeve and its processing technology, relating to the field of insulating sleeve processing technology. The sleeve includes a sleeve shell, a cable sheath, a U-shaped plate, and magnetic protrusions. The sleeve shell corresponds to the shape of a surge arrester. The sleeve shell, cable sheath, U-shaped plate, and magnetic protrusions are integrally molded. The magnetically aspirated insulating sleeve of this invention is easy to install; a single person can quickly complete live installation within minutes, saving installation time. Furthermore, the innovative magnetically aspirated insulating sleeve achieves stable and strong adsorption force through high-performance permanent magnets. Combined with the magnet embedded structure, it ensures a firm and reliable installation, making it widely applicable to situations where insulating sleeves need to be installed on the incoming and outgoing terminals of circuit breakers on power distribution lines. This invention also integrates a positioning module and multiple sets of collaborative flash removal components, which can clean flash from multiple key areas such as the concave surface of the U-shaped plate and the magnetic holes of the magnetic protrusions in one go, ensuring smooth and tight assembly of the magnets.

The present application relates to the field of surge arresters, and specifically to a gapped alternating-current surge arrester, comprising a surge arrester main body and a pressing column, wherein a stainless steel grading ring is mounted on the pressing column; a support seat is mounted on the surge arrester main body; a chamber for the pressing column to slide up and down is formed in the support seat. By means of cooperation of a pressing plate, a first spring, right-angle blocking plates, a clamping mechanism, a pressing mechanism, and limiting mechanisms, when the stainless steel grading ring is mounted, the pressing column is completely inserted into the support seat, and then the pressing plate is pressed downwards to fix the stainless steel grading ring, and when the stainless steel grading ring is dismounted, the stainless steel grading ring can be released simply by pressing the pressing plate downwards to the maximum extent, and then the stainless steel grading ring is removed; in the entire assembly and disassembly process, only single-handed operation of a worker is required, and the other hand of the worker can grasp an external object to stabilize the body of the worker, thereby improving the operation convenience of the worker and also improving operation safety.

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.

This utility model relates to the technical field of surge arresters, specifically a surge arrester for line overvoltage protection, including a surge arrester mounting base, a surge arrester body, an insulator string, and a surge arrester assembly. The surge arrester body is connected to a fixing point on the surge arrester mounting base, and an insulator string is fixed to an external mounting point on the surge arrester body. An insulator string is also provided at a mounting point on the surge arrester assembly. In this utility model, expanding foam is filled inside the plastic cover. The expanding foam can expand and fill the outside of the ceramic ring, connecting ring, and threaded ring, providing anti-collision protection for the ceramic ring, connecting ring, and threaded ring. When the surge arrester terminal is wrapped with rubber, the expanding foam and the plastic cover shield the silicone rubber jacket, preventing cracking and powdering of the transformer inlet terminal under ultraviolet radiation and ozone. The expanding foam and the plastic cover prevent damage to the transformer inlet terminal of the surge arrester.

The embodiment of the application provides an auxiliary wiring device for live test of a lightning arrester, comprising a clamping assembly, a rotating assembly and a rotary bearing, the clamping assembly is used for electrical connection with a leakage current of the lightning arrester, and the clamping assembly comprises a connecting part. The rotating assembly comprises at least two detection parts and a grounding part, the rotating assembly can rotate relative to the clamping assembly, so that the connecting part is electrically connected in at least two detection parts and the grounding part, to realize function conversion. The rotary bearing is arranged between the rotating assembly and the clamping assembly. The auxiliary wiring device provided by the application realizes one-time clamping and fixing through the clamping assembly, realizes multiple function switching through the rotating assembly provided with at least two detection parts and a grounding part, and does not need to repeatedly detach a temporary grounding wire and a test wire, so that the time consumption of the whole wiring and detaching process is greatly shortened, the on-site operation efficiency is improved, the test operation links are significantly reduced, and the personal safety hidden danger is reduced.

This application discloses a method, device, and online monitoring system for lightning strike type identification, relating to the field of power grid lightning protection safety technology. The solution provided in this application directly acquires the impulse discharge current on a 10kV surge arrester and performs waveform time-domain feature analysis. This analysis is then matched with a preset waveform time-domain feature threshold range to determine the lightning strike type. This avoids the complex reflection and cumbersome preprocessing procedures of traditional traveling wave data processing, simplifying the lightning strike type identification process, improving identification efficiency, and facilitating timely and targeted lightning protection measures to ensure the safe and stable operation of the power grid system.

This utility model relates to the field of transformer grounding protection technology, and solves the problem that during the installation of protection devices, bolts are often used for positioning and installation. However, after long-term use, bolts are prone to rust or reduced hardness, causing inconvenience during disassembly. Specifically, it is a transformer neutral point grounding protection device, including a mounting base. Several positioning blocks are fixedly installed inside the mounting base. Isolation rods are fixedly installed on the surface of the positioning blocks. A surge arrester is installed on the side adjacent to the isolation rod, and a disconnecting switch is installed on the side adjacent to the surge arrester. A current transformer is fixedly installed on one side of the mounting base surface. A grounding plate is installed on one side of the isolation rod surface. Positioning components are provided on both sides of the bottom of the mounting base. The positioning components include positioning grooves opened on both sides of the mounting base surface. A limiting plate is fixedly connected inside the positioning groove by a positioning bolt. A threaded groove is opened in the middle of the surface of the limiting plate.

To provide a lightning suppression type surge arrester that has excellent isotropic lightning protection performance and can be easily installed. To provide a lightning suppression type surge arrester that allows for easy adjustment of the dielectric strength. [Solution] The lightning arrester 1 comprises an internal electrode 2 that is grounded, and an external electrode 3 which is electrically insulated from the internal electrode 2 and includes an internal IS that houses the internal electrode 2. The internal electrode 2 includes a flat plate portion 21 which has a circular shape around a central axis AX when viewed from above. The external electrode 3 includes a flat plate portion 31 which faces the upper surface 221 of the flat plate portion 21 and has a circular shape around a central axis AX when viewed from above, and a flat plate portion 32 which faces the lower surface of the flat plate portion 21 and has a circular shape around a central axis AX when viewed from above.

This invention relates to a surge arrester condition monitoring system, comprising a data acquisition module, a lightning strike assessment module, a prediction module, and a threshold adjustment module. The data acquisition module collects current and voltage waveforms from multiple lightning strikes within a single lightning event, as well as the time intervals between adjacent strikes. The lightning strike assessment module calculates the intensity ratio of single lightning strikes based on the surge arrester's baseline withstand parameters, quantifies the cumulative effect of consecutive lightning strikes using a time interval-based correction coefficient, and obtains a weighted fusion index of the comprehensive impact of lightning events on the surge arrester. The prediction module uses this index, combined with the natural aging rate, to update the surge arrester's estimated remaining lifespan. The threshold adjustment module adjusts the abnormal monitoring thresholds for operating parameters such as leakage current, resistive current, and temperature based on the updated remaining lifespan. This invention achieves quantitative assessment of the surge arrester's aging state, dynamic prediction of remaining lifespan, and intelligent adjustment of monitoring thresholds, effectively improving the foresight and accuracy of condition monitoring.

A drone-mounted grounding wire installation device eliminates the need for manual work at heights using insulated poles or aerial work platforms, significantly reducing the risk of personnel approaching adjacent live equipment and ensuring personal safety. It also reduces the tediousness and physical exertion of manual operation, improving work efficiency. The curved pipe structure and counterweight design allow the device to better adapt to the connection requirements of vertical surge arrester leads. Its own weight ensures stable horizontal clamping of the conductor end to the surge arrester lead, effectively preventing problems such as insufficient contact area or grounding wire detachment due to sagging of the connection point after grounding wire connection, ensuring consistently effective grounding protection.

1. Name of the product in this design: Surge arrester cover. 2. Purpose of this design: An integrated compatible cover that provides insulation, dustproof, and waterproof protection for surge arresters. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention relates to the technical field of surge arrester testing, and particularly to a surge arrester testing production line, comprising at least one testing fixture and multiple testing units arranged sequentially along the production line. The testing fixture supports the surge arrester and is movable along the production line. The testing fixture is equipped with a high-voltage input conductive plate and a low-voltage input conductive plate. Each testing unit includes a movable testing probe, and the movement of the testing probe causes it to contact or disconnect from the high-voltage and low-voltage input conductive plates. By arranging each testing unit along the production line and sequentially electrically connecting or disconnecting the testing probes of each unit from the surge arrester, continuous testing of multiple electrical performance characteristics can be achieved, thereby improving the testing efficiency of the surge arrester. Furthermore, the point-to-surface contact between the testing probes and the high-voltage and low-voltage input conductive plates greatly improves the convenience and accuracy of the electrical connection.

This utility model discloses a self-powered remote-transmission surge arrester monitor and surge arrester with local pointer display. The monitor includes an ammeter, one end of which is connected to the first end of the power extraction system, and the other end of which is connected to the first end of the filtering and current-limiting protection circuit. A voltage limiting protection circuit is also connected to the first end of the power extraction system connected to the ammeter. A communication module is connected to the second end of the power extraction system, and a DAC driver is connected to the third end. This surge arrester monitor achieves consistency between the mechanical ammeter reading and the remote-transmission reading while simultaneously measuring the leakage current through digital isolation and transmitting the data remotely. This solves the problem that existing methods combining mechanical and digital measurements often result in maintenance personnel being unable to determine which reading is more accurate.

This invention provides a method for installing a surge arrester while the circuit is energized, relating to the technical field of surge arrester installation. The installation method is as follows: (1) The installation accessory for the surge arrester installation is fixedly assembled with the equipment for which the surge arrester needs to be installed, and the surge arrester is assembled on top of the installation accessory for connection; (2) The installation accessory for connection carrying the surge arrester is snapped onto the top of the installation accessory for lifting and adjusting, and the surge arrester is installed and lifted by the installation accessory for lifting and adjusting; (3) The installation accessory for lifting and adjusting cooperates with the installation accessory for connection to temporarily fix the surge arrester on top of the installation accessory for the load-bearing component; (4) The installation accessory for lifting and adjusting is snapped away from the installation accessory for connection, and the installation accessory for lifting and adjusting is set below the installation accessory for connection and then locked and adjusted, so that the surge arrester can be quickly installed while the circuit is energized; solving the problem that the installation structure of the surge arrester cannot be quickly installed while the circuit is energized.

The invention relates to a surge arrester (1). The surge arrester (1) comprises a housing (3) which has a feed-through (15) having an electrical conductor (17), and comprises a discharge column (5) arranged in the housing (3). The discharge column (5) can be moved relative to the housing (3) along a longitudinal axis (21) of the discharge column (5) between a first end position in which a first end (39) of the discharge column (5) contacts the electrical conductor (17), and a second end position in which the discharge column (5) is electrically separated from the electrical conductor (17). The two electrical conductors (17) are axially positioned on each end (35, 27) of the discharge column (5).

This utility model discloses a surge arrester bracket, which includes a bracket body and a surge arrester body placed thereon. One end of the surge arrester body has a connecting portion that passes through the bracket body. Another end of the surge arrester body has a first countersunk hole located outside the connecting portion. The first countersunk hole has several equally spaced grooves evenly distributed along its circumference. One end of the bracket body has a protruding post that is embedded in the first countersunk hole. The protruding post has a protrusion that is embedded in the groove. The protrusion and groove cooperate to position and limit the surge arrester body and the bracket body, suppressing swaying and rotational displacement under wind force and preventing the first fastener from loosening. The second fastener applies pressure, increasing the friction of the contact surface and enhancing connection stability. This structural design improves overall anti-interference capability, disperses external forces, reduces stress concentration, extends service life, and ensures equipment operation and personnel safety.

The application discloses a lightning arrester dismounting device, which comprises a lifting platform, a fixed plate, a lightning arrester clamping assembly, a dismounting assembly, a moving assembly, a transmission protection mechanism and a groove. The fixed plate comprises a top plate and a side wall, and the side wall is connected with the lifting platform. The lightning arrester clamping assembly is arranged in the fixed plate and used for clamping the lightning arrester. The dismounting assembly is arranged on the lightning arrester clamping assembly and used for dismounting the lightning arrester from a cross arm. The moving assembly is arranged on the lightning arrester clamping assembly and used for connecting and moving the dismounting assembly. The transmission protection mechanism is arranged on the side wall of the fixed plate and comprises a fixed arc plate and a loading arc plate. The loading arc plate is arranged on the fixed arc plate and has an extension part. A plurality of notches are arranged on the extension part at equal intervals. A liftable supporting cylinder is arranged below each notch and used for supporting the dismounted lightning arrester and transmitting the lightning arrester to the ground. The application can guarantee the overall integrity of the dismounted lightning arrester, complete synchronous transmission of the lightning arrester and greatly improve the overall dismounting efficiency.

This invention discloses a surge arrester monitoring device, relating to the field of surge arrester technology. It includes an electrical box and a support frame, with a controller installed inside the electrical box. The surge arrester monitoring device mounts a surge arrester monitor on a mounting plate. An inner protective shell, an outer protective shell, and a convex lens are fitted around the surge arrester monitor. The angle of the surge arrester monitor is adjusted by rotating the rotating base and the mounting plate, allowing ground personnel to easily view the monitored data. The rotating base, mounting plate, and surge arrester monitor are secured using a socket, a fixing plate, and wing screws. Furthermore, the distance between the convex lens and the milliammeter, pollution meter, and action counter on the surge arrester monitor is adjusted through the threaded engagement between the inner and outer protective shells, allowing the convex lens to magnify the monitored values ​​for easier viewing by ground personnel.

This utility model relates to a fixture for processing surge arrester blades, specifically a fixture for processing excess material at the edge of surge arrester blades. It includes a clamping part comprising an upper clamping plate and a lower clamping plate, which are rotatably connected by a rotating shaft at their ends. A limiting part is also provided between the upper and lower clamping plates. A cutting part and a driving part for linearly moving the cutting part are mounted on the upper clamping plate. The surge arrester blade is clamped and fixed between the upper and lower clamping plates. The driving part drives the cutting part to move and process excess material at the edge of the surge arrester blade. This utility model, by setting up a clamping part composed of an upper and lower clamping plate, can stably clamp and fix the surge arrester blade. The cylinder pushes the support fixing slider and the cutting blade to process excess material at the edge of the surge arrester blade during movement. The entire fixture has a simple structure, small size, is easy to operate, and is safe to operate, effectively avoiding the problem of hand injuries caused by improper manual operation.

This invention relates to the field of line installation technology and discloses an adaptive docking method and system for multi-specification surge arrester leads. The method includes: determining the specification type and end oxidation degree of the leads to be docked using a multi-modal sensing model based on acquired multi-modal data; the multi-modal sensing model is configured to fuse lead image data and eddy current signal data based on an attention mechanism, and to use radial stiffness data as a guiding signal to weight and enhance the fusion result of the attention mechanism; matching the corresponding docking process procedure from a process database based on the specification type, end oxidation degree, and radial stiffness data from the multi-modal data; and performing cleaning processing based on a target preprocessing strategy and crimping operation based on target crimping process parameters according to the docking process procedure to obtain the docking result. The method provided in this application improves the adaptability and crimping quality of surge arrester lead docking.

This invention discloses a switchgear with a sensing and interlocking function, belonging to the field of switchgear. It includes a switchgear body with a hinged door. At least three sets of through-wall bushings are installed through the side of the switchgear body. Busbars are bolted to the through-wall bushings, and connecting busbars are bolted to the ends of the busbars. A surge arrester is connected to one end of the connecting busbar. A mounting bracket is fixed inside the switchgear body. The surge arrester is connected to the mounting bracket via a grounding component. The side of the busbars is elastically buffered by a buffer assembly and an interlocking assembly. This switchgear with a sensing and interlocking function absorbs the impact of cabinet vibration and load fluctuations through buffer springs one and two, offsetting relative displacement pulling forces, reducing direct pulling on the sensor, and indirectly reducing the tensile stress at the connection between the sensor and the secondary wiring. The fixing assembly provides full-process protection for the secondary wiring through placement, wiring, and guiding units, and is linked with the sensor end for buffering, preventing damage to the secondary wiring from pulling.

This utility model discloses a surge arrester manufacturing assembly fixture, relating to the field of surge arrester production. It includes a first assembly frame and a second assembly frame, connected and fixed together by hinges. The first assembly frame comprises a first fixed frame and a second fixed frame, both U-shaped. First connecting plates are fixedly fixed to both ends of the second fixed frame, and are inserted into the first fixed frame. The second assembly frame comprises a first mounting frame and a second mounting frame, both U-shaped. Second connecting plates are fixedly fixed to both ends of the second mounting frame, and are inserted into the first mounting frame. This utility model allows the first and second assembly frames to be adjusted to a specified length according to the overall length of the surge arrester body, thereby adapting to the overall installation requirements of surge arrester bodies of different lengths and improving the overall practicality of the device.

This application discloses a method, device, and storage medium for assessing lightning damage risk of transmission lines, belonging to the field of power system safety technology. The method includes: acquiring multi-source operational data of each tower in the target transmission line, including historical lightning strike data, historical tripping data, tower grounding resistance data, and surge arrester monitoring data; based on this, generating core risk factors for each tower, including lightning threat factors, equipment vulnerability factors, and protection failure factors; selecting a matching risk assessment model based on whether surge arresters are installed to perform fusion calculations on the lightning threat factors, equipment vulnerability factors, and protection failure factors to obtain a comprehensive lightning damage risk value for each tower; and then generating the lightning damage risk assessment result for the target transmission line. This method solves the problem of inaccurate assessments due to a single assessment dimension and neglect of the dynamic status of protective equipment. It can dynamically quantify the effectiveness of protective equipment, accurately distinguish the causes of risks, and provide effective decision support for lean operation and maintenance.

The application discloses a self-diagnosis modular lightning arrester state monitoring system, which comprises a sensing module, an extension module, a power supply module, a communication module and a processing module; the sensing module is used for collecting full current signals, surface temperature signals and partial discharge signals of the lightning arrester; the extension module is used for accessing environmental humidity signals and internal pressure signals of the lightning arrester through a controller area network bus interface; the power supply module is used for extracting energy from induced current of a grounding down lead of the lightning arrester to provide electric energy required by system operation; the communication module is used for sending monitoring data to a remote operation and maintenance server; and the processing module is used for receiving various sensor signals, extracting a resistive current component by using a fast Fourier transform algorithm, constructing a three-dimensional feature vector containing a resistive current fundamental component, a partial discharge pulse number and a temperature change rate, and outputting a fault type recognition result through a honeybee algorithm optimization self-adaptive network fuzzy reasoning system classifier.

1. Name of the product in this design: Surge arrester diagnostic instrument (10kV). 2. Purpose of this design: To measure the insulation resistance of surge arresters. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.