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577 results about "Overhead line" patented technology
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An overhead line or overhead wire is used to transmit electrical energy to trams, trolleybuses or trains. In this article, the generic term overhead line is used, as used by the International Union of Railways.
Aerial line trend intelligent crane sentry warning method and system based on Beidou positioning
The invention relates to the technical field of line crane warning, in particular to an overhead line trend intelligent crane sentry warning method and system based on Beidou positioning. The method comprises the steps that base station data information including power transmission tower pole and line trend data is acquired based on Beidou positioning, and construction crane position information is monitored in real time; respectively constructing a power transmission line corridor model and a warning tape model based on the acquired data; carrying out model integration and optimization on the constructed power transmission line corridor model and the warning tape model; generating early warning information based on the integrated and optimized model; and carrying out sentry alarm on the construction crane based on the generated early warning information. Real-time monitoring of numerous power transmission tower and power transmission line corridor areas, including power grid power transmission line channel display, crane equipment map point location display, crane early warning track display and the like, can be realized.
Owner:STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO
10kV overhead line self-adaptive evaluation method and system for non-power-cut operation
The invention discloses a 10kV overhead line adaptive evaluation method and system for non-power-cut operation, and the method comprises the following steps: obtaining the field data of a target line, and constructing the field data into a multi-dimensional evaluation feature vector according to a preset evaluation dimension system for non-power-cut operation; inputting the multi-dimensional evaluation feature vector into a non-power-cut operation adaptability evaluation model to obtain a comprehensive evaluation score and an optimization suggestion of the target line; outputting the comprehensive evaluation score and the optimization suggestion; wherein the non-power-cut operation adaptability evaluation model is constructed by the following steps: training to obtain an initial machine learning model; simulating a preset non-power-cut operation task flow in the digital twinborn body; and performing incremental training and parameter optimization on the initial machine learning model by using operation effect data fed back after actual operation of the simulation data vector. The problems of single evaluation dimension, model stiffness and the like in the prior art can be solved.
Owner:GUIZHOU POWER GRID CO LTD ZUNYI POWER SUPPLY BUREAU
Distribution network overhead line and partial discharge live detection and positioning method of equipment along line
PendingCN121364374ATesting dielectric strengthSynchronisation arrangementRisk levelElectric power equipment
The invention relates to the technical field of state monitoring and fault diagnosis of power equipment, in particular to a distribution network overhead line and partial discharge live detection and positioning method of equipment along the line, which comprises the following steps of: 1, arranging a plurality of partial discharge signal detection points on the distribution network overhead line; 2, the central processing unit preprocesses the digital signals; step 3, the central processing unit carries out partial discharge identification on the preprocessed signal; 4, the central processing unit carries out positioning calculation on the partial discharge event; and step 5, the central processing unit outputs a partial discharge detection result and a positioning result, including the discharge source position coordinate, the discharge intensity and the risk level, and triggers an alarm mechanism if the risk level exceeds a preset risk threshold. Through efficient signal detection and accurate positioning calculation, not only can potential faults on the overhead line of the distribution network be found in time, but also an accurate reference basis can be provided for subsequent equipment maintenance, and the operation safety and stability of the distribution network are effectively improved.
Owner:FUJIAN VALIN TECH CO LTD
Modeling method, device and equipment for sling net blocking system and storage medium
The invention discloses a modeling method, device and equipment for a sling lifting net blocking system and a storage medium. The method comprises the following steps: acquiring working state parameters of a bearing cable under the overhead line crossing construction working condition, and determining an initial bearing cable curve based on a catenary formula, boundary conditions of suspension points on two sides of the bearing cable and the working state parameters of the bearing cable; constructing a finite element analysis model based on the initial bearing cable curve, and determining stress distribution data and deformation data of the bearing cable based on the finite element model; and under the condition that the stress distribution data and the deformation data meet preset engineering requirements, determining the finite element analysis model as a target mechanical analysis model. The technical effects of accurately simulating the stress and deformation of the bearing cable and guaranteeing the construction safety are achieved.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO XUZHOU POWER SUPPLY CO +1
Rapid overhead line fault positioning method and device
The invention discloses an overhead line fault rapid positioning method and system, and belongs to the field of power system overhead line fault detection. According to the method, traveling wave acquisition assemblies are arranged at the head end and the tail end of an overhead line, and dual-mode redundant clock synchronization is used for guaranteeing time consistency of the two ends; obtaining a multi-feature fault signal, and carrying out preprocessing and weighted fusion to calculate the final time difference of the two ends of the fault traveling wave; correcting the wave velocity by combining the inherent electrical parameters of the line with the real-time environment and state parameters to obtain a dynamic propagation velocity; modeling is carried out according to the time difference, the dynamic wave velocity and the total length of the line, the distance from the head end to the fault point is solved, and a result is verified through signal attenuation characteristics. The method improves the positioning precision and reliability, avoids wrong positioning, shortens the troubleshooting period, and guarantees the stable power supply of a power system.
Owner:STATE GRID HENAN ELECTRIC POWER CO QIXIAN POWER SUPPLY CO
Image segmentation method and system for cantilever system of high-speed rail overhead line system supporting device
The invention relates to the technical field of image segmentation, provides an image segmentation method and system for a cantilever system of a high-speed rail overhead line system supporting device, and solves the problems that defects in a metal part cannot be detected, and the defect recognition precision is low under high-frequency vibration noise interference. The method comprises the following steps: scanning a metal part of the cantilever system to generate a three-dimensional image, and collecting a stress wave signal of the surface of the metal part under the action of a dynamic load; based on the cyclic load parameter of the metal part, extracting the spectrum characteristic of the stress wave signal, and determining the energy distribution characteristic of the bolt joint by combining the geometric structure parameter of the bolt joint of the metal part; and fusing the three-dimensional image, the energy distribution characteristics, the temperature rise abnormal region and the electric field intensity distribution to generate a multi-source data set, and generating respective segmentation results of the fatigue crack and the insulation aging defect of the metal part in combination with the cyclic load parameters. According to the invention, high-precision collaborative segmentation of metal fatigue cracks and insulation aging defects of the cantilever system is realized.
Owner:CHINA RAILWAY ELECTRIFICATION ENGINEERING GROUP CO LTD
Electrified railway anti-icing contact net and control system
The invention relates to the technical field of railway contact networks, in particular to an electrified railway anti-icing contact network and a control system.The device comprises a contact network wire and a brim flow guide structure arranged on the contact network wire in a sleeving mode; the upper part of the catenary wire is an arc-shaped surface, the middle part of the catenary wire is provided with a dovetail groove, and the lower part of the catenary wire is a conductive surface; the shape of the upper portion of the brim diversion structure is consistent with that of the upper portion of the contact network wire, the middle of the brim diversion structure extends towards the two sides to form brim-shaped diversion plates, and the brim-shaped diversion plates are used for guiding airflow to drive freezing rain water drops to slide towards the two sides so as to avoid a conductive surface; the brim-shaped flow guide plate is positioned below the dovetail groove; and after the cap-brim-shaped guide plate is sleeved on the overhead line system wire, the conductive surface can be in contact with the pantograph. Structural innovation and collaborative prevention and control logic are integrated, and the problems that an existing electrified railway anti-icing scheme is single, limited in function and insufficient in adaptability are solved.
Owner:CENT SOUTH UNIV
Automatic balancing device and aerial operation robot
ActiveCN224225318UImprove stabilityimprove securityManipulatorAircraft indicatorsElectric machineryControl theory
The utility model discloses an automatic balancing device and an aerial operation robot. The automatic balancing device comprises a connecting seat, a motor and a flying disc, wherein the connecting seat is used for being connected with a foot stool of the aerial operation robot; the motor is fixedly mounted on the connecting seat, the flying disc is fixedly connected with a rotating shaft of the motor, and the flying disc is used for rotating under the driving of the motor so as to provide power for balancing the aerial operation robot. The automatic balancing device is compact in structure and controllable in cost, is mounted on a foot stool of the aerial operation robot, and is used for resisting center-of-gravity shift caused by crosswind or movement on an overhead line, so that interference of the center-of-gravity shift on operation of the aerial operation robot on the overhead line is avoided; the walking stability and safety of the aerial operation robot on the overhead line are remarkably improved.
Owner:成都恒羽科技有限公司
Automatic balancing device and aerial operation robot
The utility model discloses an automatic balancing device and an aerial operation robot. The automatic balancing device comprises a connecting seat, a motor and a ducted fan, wherein the connecting seat is used for being connected with a foot stool of the aerial operation robot; the ducted fan is fixedly installed on the connecting base, the motor is fixed to the ducted fan and drives a propeller of the ducted fan to rotate, and the ducted fan is used for forming power for balancing the aerial operation robot in air pushed by rotation of the propeller. The automatic balancing device is compact in structure and controllable in cost, is mounted on a foot stool of the aerial operation robot, and is used for resisting center-of-gravity shift caused by crosswind or movement on an overhead line, so that interference of the center-of-gravity shift on operation of the aerial operation robot on the overhead line is avoided; the walking stability and safety of the aerial operation robot on the overhead line are remarkably improved.
Owner:成都恒羽科技有限公司
Distribution network overhead line fault self-recovery method, system, equipment and medium
PendingCN121566433AEmergency protective circuit arrangementsContigency dealing ac circuit arrangementsAdaptive designControl engineering
The invention discloses a distribution network overhead line fault self-healing method, system and device and a medium, and belongs to the technical field of power system fault self-healing, and the method comprises the steps: laying a synchronous phasor measurement unit, and generating a unified phasor reference through cloud edge cooperative calculation; the edge coordination engine calculates the load flow change after loop closing by means of a unified phasor reference and an instantaneous topological state to form an action sequence; the local controller obtains a coordination coefficient and controls the pre-compensation of the flexible interconnection device and the closing time of the section switch; pushing the temperature rise prediction value to a wire thermal model; and the edge controller circularly and adaptively corrects the compensation parameter of the flexible interconnection device, and writes the event into the self-healing knowledge base. According to the invention, automation and intelligentization of fault self-healing are realized, the efficiency of fault self-healing is significantly improved, and long-term stable operation of the power distribution network after fault recovery is ensured; and through intelligent and adaptive design, a brand new technical path is provided for long-term reliable operation of the distribution network.
Owner:GUIZHOU POWER GRID CO LTD
A cost control method for overhead line mechanized construction path scheme comparison and selection
This invention discloses a cost control method for comparing and selecting mechanized construction route schemes for overhead power lines. The method involves planning the route based on actual project conditions, determining the initial route length L1, the terrain proportions of the areas traversed by the route, the overall short-distance transport distance, the construction scale, the selection of conductors and ground wires, and the selection of tower modules. It also calculates the cost per kilometer of the project structure under different terrain conditions. The route is then adjusted to be closer to existing rural roads, village roads, and farm roads, reducing the overall short-distance transport distance. The cost per kilometer of the project structure under different terrain conditions is calculated accordingly. Based on the difference in cost per kilometer before and after adjustment, combined with the project route length and the proportions of different terrains, the increased length ΔL of the economical route is calculated. The relationship between the difference between the adjusted route length L2 and the original route length and ΔL is determined. If L2 - L1 ≤ ΔL, the adjusted route is more economical. This method effectively plans more economical and reasonable route schemes that are convenient for mechanized construction.
Owner:GUIZHOU ELECTRIC POWER DESIGN INST +1
Clamp structure device convenient to mount and dismount and method
The invention discloses a clamp structure device convenient to mount and dismount and a method. The device comprises a connecting base, equipment, an electric push rod, a connecting rod, a trigger switch, a movable clamping opening, a shaft pin, a limiting rod, an overhead line, a connecting seat bin and an unmanned aerial vehicle platform. A connecting seat bin is arranged on the upper portion of the unmanned aerial vehicle platform, equipment is arranged on the upper portion of the connecting seat bin, a connecting base is arranged on the upper portion of the equipment, an electric push rod is arranged in the connecting base, a trigger switch is arranged on the top of the connecting base, and an overhead line is arranged on the top of the trigger switch. Movable clamping openings are formed in the two sides of the top of the connecting base, connecting rods are arranged at the bottoms of the movable clamping openings, and limiting rods are arranged at the tops of the movable clamping openings; the electric push rod, the connecting rod and the movable clamping opening are connected through shaft pins so that the electric push rod can drive the connecting rod and the movable clamping opening to move. Through the structure, the equipment can be conveniently mounted and dismounted, and convenience is provided for later maintenance or replacement.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD NANJING POWER SUPPLY COMPANY +1
An overhead line fixing device
The application relates to the field of electric power construction, and provides an overhead line fixing device which comprises a ship body and a pressing plate, a connecting piece is arranged on the ship body, a telescopic adjusting mechanism is arranged on the pressing plate, the top of the adjusting mechanism abuts against the connecting piece, and the pressing plate is pushed to move towards the ship body when the adjusting mechanism is elongated. Based on the above structure, the pressing plate is pushed to move towards the ship body through the adjusting mechanism between the pressing plate and the connecting piece, and the pressing force applied by the pressing plate to the wire passing through the ship body can be adjusted.
Owner:XINXIANG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER +1
A horizontal wheel of a stacker's overhead rail
The utility model discloses a kind of overhead line horizontal wheels of stacking machine, it is related to stacking machine technical field, including mounting plate, the outside of mounting plate is provided with two adjusting base plate, the outside of each adjusting base plate is provided with guide wheel assembly, the outer surface of adjusting base plate is fixedly connected with mounting disc, the inside rotation of guide wheel assembly is installed with bearing, the inside of adjusting base plate is provided with a group of fixed long holes.This application is provided with adjusting base plate, fixed long hole, limiting bolt and fixed mechanism etc., by optimizing guide wheel base plate structure design, using rounded rectangular long hole layout, the convenience and positioning accuracy of guide wheel installation adjustment are significantly improved, limiting bolt can realize the fine control to the running track of stacking machine, the application range is significantly improved, fixed mechanism is convenient for guide wheel to be fixed and replace, greatly simplify the steps of guide wheel installation and replacement, reduce the working intensity of staff, improve the practicability of device.
Owner:TAIYUAN FORTUCKY LOGISTICS EQUIP TECH CO LTD
High conductivity aerial cable and method of manufacture
PendingCN122177580APower cables with screens/conductive layersInsulated cablesAerial cableElectric cables
The application discloses a kind of high-conductivity cable overhead line manufacturing method, including S1, substrate preparation treatment;S2, single wire drawing forming;S3, axial groove structure processing;S4, conductor annealing treatment;S5, conductive layer coating treatment;S6, multi-wire stranding forming.A kind of high-conductivity cable overhead line includes, conductor, conductive layer, insulating layer, shielding layer and outer sheath;The outer surface of the conductor is provided with multiple axial grooves along its axial direction.The application is coated by conductive layer, multiple circular pores in the interior of metal particles enable binder to enter particle, form mechanical interlocking structure, enhance the binding force between metal particles and binder, which makes the conductive layer not easy to fall off from the surface of the conductor after solidification, even if subjected to slight mechanical friction or vibration, conductive layer can still keep intact, in addition, circular pore structure makes metal particles form more compact accumulation inside conductive layer, reduce the gap inside conductive layer, improve the overall structural stability of conductive layer.
Owner:铭越电缆有限公司
Anti-loose self-locking fastening device for railway overhead line system
Owner:NINGBO YUEMA FASTENER CO LTD
Constant tension stringing guide device for overhead contact system of electrified railway
This invention discloses a constant tension overhead line guiding device for electrified railway catenary, relating to the field of railway catenary technology. It includes: a high-position mounting frame fixedly connected to a constant tension overhead line vehicle; a mounting plate fixed to the top of the high-position mounting frame; and multiple opposing guide components mounted on the mounting plate. It also includes: a support cylinder rotatably connected to the guide components; an adjusting arm slidably sleeved inside the support cylinder; and a monitoring unit connected to the support cylinder for detecting tilting of cables passing through the guide components. Through the monitoring unit, this invention can detect in real time whether the cables passing through the guide components are tilting. When the cable tilts, it generates a lateral force on the support cylinder, causing the adjusting arm to slide within the support cylinder. Furthermore, by controlling the action of the adjusting unit, the position of the adjusting arm, support cylinder, and guide components is adjusted, achieving real-time correction of the cable's direction.
Owner:SICHUAN TIEZHENG ENG INSPECTION CO LTD
Overhead line lifting device for power transmission line
The invention relates to an overhead line lifting device for a power transmission line, which comprises an electric pole, a driving mechanism, a guide wheel group and a lifting mechanism, a cross arm is arranged at the upper part of the electric pole, and an insulator is arranged at the end part of the cross arm. During use, an overhead line is placed on the upper side of the bearing seat on the outer side of the supporting plate. The electric capstan is started, the electric capstan winds the twisted rope, the twisted rope pulls the supporting plate to move upwards through the guiding effect of the guide wheel set, and the supporting plate drives the inner plate, the bearing base and the overhead line placed on the bearing base to be lifted upwards together till the overhead line reaches the needed height. The whole construction process is free of manual operation, time-saving, labor-saving, safe and efficient.
Owner:JIYUAN CITY FENGYUAN POWER TECH LTD
Crossing frame for assisting construction of overhead line
The utility model provides a crossing frame for assisting overhead line construction, which comprises at least three supporting rods and a supporting seat, each supporting rod is formed by connecting at least two sections of components, a hinging part is arranged at the bottom of the supporting seat, and one end of each supporting rod is hinged with the hinging part; a transverse rod is arranged between every two adjacent supporting rods, buckling assemblies are arranged at the two ends of each transverse rod, and the transverse rods are fixedly connected with the supporting rods through the buckling assemblies. An anti-skid piece is arranged at one end of the supporting rod, and a distance adjusting rod is arranged between the anti-skid piece and the supporting rod; rotating shaft seats are arranged at the two ends of the top of the supporting seat, a wiring rod is connected between the two rotating shaft seats, and insulating rods are arranged at the tops of the two rotating shaft seats; connecting parts are further arranged at the two ends of the supporting base, and fixing holes used for being connected with a windproof rope are formed in the connecting parts. The utility model has the advantages of convenience in disassembly and assembly, simplicity and rapidness in building, high use flexibility and capability of effectively improving the construction efficiency.
Owner:GUANGDONG POWER GRID CO LTD QINGYUAN QINGCHENG POWER SUPPLY BUREAU
Wire tightening device for mounting elastic sling
The utility model relates to a wire tightening device for mounting an elastic sling, and belongs to the technical field of railway overhead line system construction. The utility model aims to provide the wire tightening device for mounting the elastic sling, and solves the problems that an existing wire tightening device is heavy and the lengths of exposed sections of the elastic sling are difficult to unify. According to the technical scheme, the device comprises a base part, a line pressing device, a sliding part and a carrier cable clamping device, the base part is in a horizontally-arranged long strip shape, the line pressing device and the sliding part are horizontally and slidably connected to the base part, the line pressing device is located behind the sliding part, the front end of the line pressing device is connected with the rear end of the sliding part, and the carrier cable clamping device is connected to the rear end of the base part; the front end of the sliding part is an upwarped arc-shaped plate, the upper surface of the arc-shaped plate is a concave cambered surface, a receding groove facilitating installation of an elastic sling clamp is formed, and a hanging piece is fixed to the upper end of the arc-shaped plate. The elastic sling tightening device is used for tightening the elastic sling in a railway contact net system.
Owner:CHINA RAILWAY ELECTRIFICATION BUREAU GROUP NO 2 ENG CORP +1
Deicing device for overhead line
The utility model relates to the technical field of line deicing, and provides an overhead line deicing device, which comprises a connecting plate, an adjusting structure is fixed at the top end of the connecting plate, the adjusting structure comprises an adjusting seat fixed at the top end of the connecting plate, and adjusting blocks are arranged on two sides in the adjusting seat. And lead screws are in threaded connection with the interiors of the adjusting blocks correspondingly, and guide rods are arranged on the two sides of the lead screws correspondingly. By arranging the adjusting structure, the distance between the limiting frames can be conveniently adjusted under the moving action of the adjusting block, so that the distance between the deicing knives can be conveniently adjusted, line bodies with different diameters can be conveniently deiced, and the stability of the adjusting block during moving can be improved under the guiding action of the guide rod; according to the overhead line deicing device, the function of conveniently adjusting the distance between the deicing knives is achieved, and the applicability of the overhead line deicing device in use is improved.
Owner:BAYANNAOER LINUO SOLAR POWER CO LTD
A catenary wear measurement method of an overhead line intelligent inspection robot
The application discloses a contact line abrasion measurement method of an intelligent contact network inspection robot, and relates to the technical field of flexible contact network abrasion measurement. The method comprises the following steps: S1, collecting original point cloud data of the flexible contact network; S2, using a circular arc search method based on noise suppression to extract a contact line point cloud profile in the original point cloud data of the flexible contact network; S3, performing profile matching on the contact line point cloud profile and a corresponding contact line standard point cloud profile in a discrete template library; wherein the discrete template library comprises contact line standard point cloud profiles of different specifications, and the contact line comprises standard circular contact lines and non-standard circular contact lines; and S4, measuring the contact line abrasion by using the contact line point cloud profile after profile matching and the contact line standard point cloud profile. The method can continuously detect the change of the wire abrasion, instead of only measuring at specific points, which is helpful for comprehensively understanding the state of the wire.
Owner:SOUTHWEST JIAOTONG UNIV +1
Multi-work-platform simulation training operation system, storage medium and method
PendingCN121600776ACosmonautic condition simulationsData processing applicationsControl engineeringSystem maintenance
The invention relates to a multi-work-platform simulation training operation system, a storage medium and a method. The multi-work-platform simulation training operation system comprises a work platform simulation module, a manipulation control module, a base installation module, a communication and vehicle manipulation module and a joint control module. The joint control module is respectively in communication connection with the work platform simulation module, the manipulation control module and the communication and vehicle manipulation module, and is used for realizing data interaction and cooperative control among the modules; according to the system, the indoor practical training space is optimally designed, the lifting requirement is met by digging the base underground, the core functions of lifting, stretching, interlocking and the like of the main platform, the left auxiliary platform and the right auxiliary platform are simulated, and a real operation scene is restored in cooperation with a special control panel and joint control logic. According to the invention, the problems of high space requirement, high risk and high cost of real vehicle training are solved, safe, efficient and repeatable overhead line system maintenance operation platform operation training is realized, and the system is suitable for pre-post training and skill improvement of overhead line system operators.
Owner:CHANGSHA POWER SUPPLY SECTION YONGZHOU POWER WORKSHOP GUANGZHOU GRP CORP ON +1
Overhead line inspection and deicing integrated cleaning device based on unmanned aerial vehicle
PendingCN121947813AOverhead installationApparatus for overhead lines/cablesGear wheelUncrewed vehicle
The invention relates to the technical field of unmanned aerial vehicle application, and discloses an unmanned aerial vehicle-based overhead line inspection and deicing integrated cleaning device, which comprises an unmanned aerial vehicle main body with rotor wings at four corners, T-shaped plates are fixed on two sides of the bottom of the unmanned aerial vehicle main body through hanging brackets, and a first cleaning mechanism is movably arranged between fixing plates at two ends of the side wall of a vertical plate of each T-shaped plate; infrared wide-angle cameras are mounted at the bottoms of the unmanned aerial vehicles at two ends of the T The first cleaning mechanism comprises a lead screw, a driven gear, a driving source, a moving seat and an extrusion wheel at the bottom, an electric heating wire electrically connected with the connecting seat is arranged in the extrusion wheel, and the driving source drives the lead screw to enable the moving seat to move synchronously. The method adapts to icing scenes with different thicknesses, does not need separate operation, shortens the operation time, reduces the maintenance cost, avoids manual high-altitude risks, and guarantees the safe and stable operation of an overhead line.
Owner:BEIJING CENTURY CONCORD OPERATION & MAINTENANCE CO LTD
Intelligent thunder and lightning interceptor suitable for railway overhead line system architecture area and lightning protection method
ActiveCN121769807AEmergency protective arrangements for limiting excess voltage/currentElectromagnetic interferenceAtmospheric sciences
The invention relates to the technical field of electric signal processing, in particular to an intelligent thunder and lightning interceptor suitable for a railway overhead line system architecture area and a lightning protection method, and the method comprises the steps: collecting the lightning stroke current of each discharge rod of the intelligent thunder and lightning interceptor at each moment; determining a discharge rod corresponding to the lightning main channel based on the change rate of the lightning current on each discharge rod; determining the linear deviation of the main path at the current moment; obtaining an electromagnetic interference coefficient of each bypass path at the current moment, and screening a real lightning stroke bypass path in all the bypass paths; determining the bypass interference degree of the real lightning stroke bypass path at the current moment; and correcting the lightning stroke current of the lightning main channel at the current moment based on the main channel linear deviation, obtaining the total lightning stroke current at the current moment by combining the lightning stroke current of the real lightning stroke bypass channel at the current moment and the bypass interference degree thereof, and distributing and dredging the total lightning stroke current. Therefore, the effectiveness and the precision of the lightning interceptor are improved.
Owner:ZHONGCHENG ELECTRICAL EQUIPMENT (SHANDONG) CO LTD +1
Vertical wire laying frame suitable for overhead distribution line
Owner:NINGXIA TIANJING YUANGUANG POWER +1
Temporary suspension device for subway safety belt
The utility model provides a temporary suspension device for a subway safety belt, which comprises a fixed module, a movable module, a movable module, a movable module and a movable module, wherein the two ends of the fixed module are adjustably fixed in preformed holes of tunnel segments; the adjusting telescopic module comprises a fixing rod, an adjusting unit and a hanging unit, the fixing rod and the adjusting unit are connected with the fixing module, the adjusting unit adjusts the width between the left side and the right side of the fixing module, and the hanging unit is connected with a safety belt. Wherein before the fixing modules are installed, the width of the fixing modules is adjusted according to the adjacent distance between preformed holes of a field tunnel segment, the fixing modules at the movable ends slide into the corresponding adjusting units, and fixing is achieved after the distance is adjusted. When the hook unit is installed, the safety belt is hung on the hanging unit. The problem that the overhead line system is damaged due to the fact that the safety belt is connected with the overhead line system during subway climbing maintenance can be solved, and the safety and reliability of climbing operation are improved.
Owner:SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT
Preparation system of copper-chromium-zirconium alloy wire for high-speed rail
The invention relates to the technical field of copper alloys, and particularly discloses a preparation system of a copper-chromium-zirconium alloy wire for a high-speed rail, which is used for solving the problems of boiling boundary phase locking, rewetting blocking and cooling speed banding, induction of spiral hot spots, performance discretization and monitoring misjudgment in the existing production process of the copper-chromium-zirconium alloy wire. The system comprises a production processing module, a sensing module, a spraying topology module, a phase analysis module, a boundary analysis module and a production analysis module. Through uniform time base of a partition setting table, a phase coherence characteristic table and a hydrothermal boundary characteristic table and partition fineness regulation and control driven by quantitative indexes, cooling banding caused by phase locking and rewetting blocking is inhibited, spiral hot spots and parameter discreteness are reduced, a cross-partition time sequence and a set boundary are unified, set convergence and switching consistency are improved, and the method is suitable for large-scale popularization and application. Misjudgment of low-frequency pseudo fluctuation monitoring is reduced, and control vectors are optimized in combination with performance specifications of the high-speed rail overhead line system.
Owner:YANTAI JINHUI COPPER
On-vehicle device, railway vehicle, control method, and ground device
PCT designated stageWO2026069780A1Speed controllerPropulsion using ac induction motorsConvertersIn vehicle
An on-vehicle device that controls a plurality of power conversion devices 10 for converting power from a catenary 1, which is a power source, and supplying the power to an electric motor 5 that drives a vehicle 3, the on-vehicle device comprising: a calculation unit that determines a tread force required for moving the vehicle 3; and a selection unit that selects, on the basis of the tread force, a speed of the vehicle 3, and a voltage value of the catenary 1, a power conversion device to be operated from among the plurality of power conversion devices 10. Through this feature, it is possible to provide an on-vehicle device, a railway vehicle, and a control method capable of further increasing an efficiency of an electrical component provided to the vehicle and improving an energy-saving performance as compared with a case in which the configuration of the present invention is not provided. Further, it is possible to provide a ground device capable of making corrections, even if a design value or an actual measurement value of efficiency of an electric component of a vehicle deviates from the efficiency during actual travel of the vehicle.
Owner:HITACHI LTD
End effector for wiping overhead line system insulator
The utility model relates to the technical field of railway catenary maintenance equipment, in particular to an end effector for wiping a catenary insulator. Comprising a fixing frame, an opening and closing motor is arranged on the fixing frame, a transmission assembly is connected to the opening and closing motor, an upper swing arm assembly and a lower swing arm assembly are connected to the transmission assembly, and wiping assemblies are arranged on the upper swing arm assembly and the lower swing arm assembly. The wiping assembly is in transmission connection with a driving assembly arranged on the upper swing arm assembly and the lower swing arm assembly. Compared with a traditional water cannon vehicle washing mode, accumulated dust and dirt on the surface of the insulator can be more effectively removed through rotary wiping of the brush wheel, and a higher cleaning effect is achieved; meanwhile, waste of a large amount of water resources is avoided, and the requirements of environmental protection and sustainable development are met; manual wiping operation is replaced, and the safety risk of operators in high-altitude and electrified environments is eliminated; an aerial work platform or climbing equipment is not needed, so that the labor intensity is obviously reduced.
Owner:SOUTHWEST JIAOTONG UNIV