159 results about "High-voltage cable" patented technology

The utility model belongs to high -voltage cable technical field, concretely relates to a kind of connecting device and cable connector for high -voltage cable, the device includes: annular connector, the first through channel and second channel of intercommunication are set in its center;The inside central portion of annular connector is provided with conical connecting position;Wherein the narrow taper surface of conical connecting position is same with the diameter of second through channel, and the wide taper surface of conical connecting position is same with the diameter of first through channel;By being provided with annular connector, by setting conical connecting position in the center of annular connector to connect two sections of diameter different through channel opened in annular connector, satisfy the cable of two sections of different diameter is connected.

This invention relates to the field of power cable technology and proposes a bend-resistant high-voltage cable, comprising several stranded multi-core conductors, each multi-core conductor being covered with an insulation layer, and further comprising a flexible tube, a filler layer, a wrapping layer, a buffer layer, a sheath layer, and end positioning components. The flexible tube is disposed between the multiple multi-core conductors and abuts against the insulation layer of each multi-core conductor. The multiple multi-core conductors are sequentially covered with the filler layer, wrapping layer, buffer layer, and sheath layer. When the cable is bent, the filler layer can deform to create space for the multi-core conductors. End positioning components are installed at both ends of the cable, and several support components are disposed between the two end positioning components. Through the above technical solution, the problem of bending stress concentration easily occurring in the prior art due to the frequent bending of drag chain cables, which easily leads to damage to the insulation layer and sheath layer, is solved.

The utility model discloses a new energy automobile copper clad aluminum braided shield high voltage cable in the technical field of high voltage cable, including stranded copper conductor, the fixed extrusion of insulating layer has on the outer wall of stranded copper conductor, the insulating layer is cross -linked polyethylene or cross -linked polyolefin insulating layer, the insulating layer outside fixedly set semiconductive inner layer, fill in the PP filling strip between semiconductive inner layer with insulating layer, the outer wall of semiconductive layer extrudes and has copper clad aluminum braided shield layer, copper clad aluminum braided shield layer is 0.1~0.2 tinned copper clad aluminum wire, and with semiconductive inner layer is 360 degree ring pressure contact, the outer wall of copper clad aluminum braided shield layer fixed extrusion has aluminum foil layer, the outer wall of aluminum foil layer fixed extrusion has semiconductive outer layer, the outer wall of semiconductive outer layer fixed extrusion has cross -linked polyolefin sheath, the utility model discloses can reduce the shielding layer direct current resistance, guarantees the continuity of grounding, promotes high -frequency shielding efficiency, strengthens in 100kHz~30MHz frequency band shielding attenuation.

This invention discloses an ultra-high voltage cable with an aluminum-pressed sheath, relating to the field of cable technology. It includes an outer sheath, inside which a cable core is installed. An insulating shielding sleeve is fitted over the outer wall of the cable core. An inner nesting sleeve is fitted over the outer side of the insulating shielding sleeve. A reinforcing strip is symmetrically wound around the outer wall of the inner nesting sleeve. Several arc pads are installed at equal angles along the circumferential direction on the outer side of the reinforcing strip. A support sleeve is fitted over the outer side of each arc pad. This invention effectively integrates spiral limiting, multi-dimensional gradient buffering, flexible protection, and rigid support. It not only forms multiple radial and axial stress relief networks, achieving multi-level stress dispersion and efficient buffering of mechanical stress, providing reliable flexibility for ultra-high voltage cables, but also forms a radially dominant, multi-axially auxiliary heat conduction network while ensuring mechanical strength, effectively improving the cable's heat dissipation capacity and simultaneously meeting the cable's requirements for mechanical strength and heat dissipation performance.

The application discloses an artificial intelligence-based high-voltage cable temperature monitoring system, relates to the technical field of high-voltage cable monitoring, and aims at solving the problems of low prediction accuracy, lack of multi-factor interaction analysis, incomplete fault evaluation and untimely early warning in the existing high-voltage cable temperature monitoring. The data acquisition module is used for collecting multi-source monitoring data of the high-voltage cable in real time, storing and sending; the data preprocessing and fusion module is used for receiving the multi-source monitoring data, preprocessing the multi-source monitoring data, and screening out an effective feature data set through correlation analysis; the intelligent temperature prediction module constructs a neural network prediction model based on the effective feature data set, realizes accurate prediction of the core temperature, surface temperature and joint temperature of the high-voltage cable, and outputs a temperature prediction result. The application has the advantages of high temperature prediction accuracy, strong real-time performance, multi-dimensional data fusion and interaction analysis, comprehensive and quantitative accurate fault risk evaluation, timely early warning, strong operation pertinence, strong system compatibility and high scalability.

This invention belongs to the field of ultra-high vacuum ion pumps, specifically a portable high-voltage power supply device and implementation method suitable for a novel ultra-high vacuum ion pump. The device includes: a portable power supply unit, a master control switch unit, a DC-DC converter unit, a high-voltage output unit, a voltage / current processing unit, and a portable high-voltage power supply housing unit. The portable power supply unit supplies power to the entire portable high-voltage power supply device; the master control switch unit controls the start and stop of the high-voltage power output; the DC-DC converter unit boosts the input voltage to provide power for the ion pump; the high-voltage output unit delivers the high-voltage power to the ion pump via a high-voltage cable, ensuring stable operation; the voltage processing unit displays the current voltage / current parameters output by the ion pump; and the portable high-voltage power supply housing unit is used for installation, operation, and fixation of the device.

This invention relates to a high-voltage cable for smart grids, applied in the field of cable technology. It includes a cable body and a heat monitoring mechanism. The heat monitoring mechanism comprises a monitoring cable segment cut from the cable body, a sealed monitoring cylinder positioned between the cable body and the monitoring cable segment, and a movable monitoring plate slidably and sealed to the sealed monitoring cylinder. An upper heat-conducting rod and a lower heat-conducting rod are respectively embedded at both ends of the sealed monitoring cylinder. A distance sensor is fixedly installed inside the sealed monitoring cylinder. The heat monitoring mechanism also includes a monitoring and analysis system. The heat monitoring mechanism can directly monitor the heat generation of the conductor in real time and automatically issue an alarm when abnormal heat generation is detected. Compared to the traditional method of monitoring cable temperature using temperature sensors, it effectively eliminates the interference and influence of environmental factors on monitoring, greatly improving the accuracy and reliability of monitoring, and thus significantly enhancing the safety of the high-voltage cable.

The embodiment of the application provides a high-voltage cable insulation state diagnosis method and system based on a multi-physical field heterogeneous GNN. Applied to the technical field of power equipment state monitoring and fault diagnosis, the method obtains multi-physical field data of a to-be-tested high-voltage cable, and pre-processes the multi-physical field data to obtain standardized feature data; a heterogeneous graph model is constructed based on the physical topology of the to-be-tested high-voltage cable, and the standardized feature data is taken as an initial feature vector of a corresponding node in the heterogeneous graph model; the heterogeneous graph model is input into a heterogeneous graph neural network embedded with physical priori to extract spatial correlation features and time sequence evolution features of the cable insulation state, and to output spatiotemporal fusion features of each node; the spatiotemporal fusion features of each node are input into multiple parallel fully-connected task heads for multi-task joint diagnosis, and corresponding task diagnosis results are output, thereby improving the accuracy, positioning accuracy and engineering usability of cable insulation defect diagnosis.

The application relates to the technical field of cables, and discloses a high-voltage cable with high safety performance. The cable comprises, from inside to outside, a conductor, a conductor shielding layer, an insulation layer, an insulation shielding layer, an inner buffer layer, a protective layer, a reinforcing steel cable, an outer buffer layer and an outer protective layer; the protective layer is composed of multiple groups of protective units arranged in an axial array, each protective unit is formed into a circular ring structure by multiple protective sheets arranged in a circumferential direction, the cross section of the protective sheet is in a prismatic shape, the inner and outer walls are in arc shapes, steel cable grooves are arranged on the two sides, and a hollow groove is arranged in the interior; the multiple protective units are staggered and connected to form a continuous spiral winding structure; and the reinforcing steel cable is spirally wound and embedded in the spiral channel formed by the steel cable grooves of the protective sheets. The application realizes uniform conversion and dispersion of axial tension into radial stress, and combines the design of the rhombic protective sheet and the hollow groove, so that the tensile resistance, extrusion resistance, impact resistance and cutting resistance of the cable are significantly improved, and the cable is suitable for complex laying environments.

The utility model discloses a double -deck double -transformer box -type substation, including box, top cover and baffle, the box is divided into high -low voltage layer and transformer layer by baffle, and transformer layer is located high -low voltage layer top, and top cover is located transformer layer top. Transformer layer includes first, second transformer room, and high -low voltage layer includes adjacent high -voltage cable isolation chamber, high -voltage chamber and low -voltage chamber, and the first ventilation groove is equipped with between transformer layer and high -low voltage layer, and top cover is equipped with ventilation structure, and the first ventilation groove and ventilation structure form the heat dissipation channel of transformer layer, and the second ventilation groove and exhaust structure that high -low voltage layer outside set form the heat dissipation channel of high -low voltage layer. The utility model two transformer rooms can assemble two transformers on the upper layer structure, and the lower layer is high -low voltage cabinet, compared with the conventional single -deck or double -deck box -type substation, and the upper and lower layers adopt independent heat dissipation and do not interfere with each other, can effectively avoid the lower layer equipment heating too big influence upper layer transformer operating condition.

This invention relates to the field of defect detection technology, specifically to a high-voltage cable defect location system and method based on a two-dimensional ultrasonic array. The system includes a signal main peak acquisition module, a lateral deviation calculation module, an excitation timing optimization module, a main peak spatial focusing module, and a focusing area control module. This invention utilizes a multi-element spatial collaborative acquisition method of a two-dimensional ultrasonic array. It constructs a signal spatial mapping relationship through the main peak timing characteristics, combines path difference parameters to achieve fine analysis of the propagation characteristics of multi-source signals, optimizes the excitation timing and array spatial response structure by adjusting the excitation sequence, periodically determines spatial convergence indices, identifies the main peak focusing state of the defect area, and dynamically adjusts the element weight distribution to improve the signal response capability of specific spatial areas. The spatial location of the defect area is thus clearly distinguished, effectively improving the resolution and accuracy of multi-point defect location in complex cable structures.

The application discloses a high-voltage cable ultrasonic deicing device, which comprises a box body, a support for each mechanism, a lifting hook connected to the box body, openings at both ends and the bottom of the box body, and a box door connected to the bottom of the box body; a walking mechanism connected in the box body and used for the overall movement of the device on the cable, the walking mechanism comprising walking wheels, and a driving assembly drivingly connected to the walking wheels; a clamping mechanism connected in the box body and used for limiting the whole device on the cable; a deicing mechanism connected to the opening at the bottom of the box body, the deicing mechanism comprising a rotating piece and an ultrasonic knife connected to the rotating piece. Compared with the prior art, the application utilizes the strong shearing force generated by ultrasonic high-frequency vibration on the ice surface of the cable, so that the ice layer can be rapidly broken and dropped, and the application has the advantages of high efficiency, energy saving, safety and the like compared with traditional methods such as thermal deicing and mechanical knocking deicing.

The utility model relates to railway vehicle detection technical field, concretely relates to a kind of EMU high-voltage cable terminal acoustic image detection device, including acoustic image acquisition unit and acoustic image analysis unit, both constitute data connection signal transmission, wherein the acoustic image acquisition unit includes microphone array, camera, the microphone array is used for the acoustic perception of high-voltage cable, the camera is used for the image perception of high-voltage cable;The microphone array includes the MEMS type sensor combination of several array elements, and the arrangement of several array elements MEMS type sensor uses the irregular sparse array based on multi-arm spiral array.The utility model has the advantages that: realize EMU high-voltage cable terminal partial discharge abnormal sound non-contact detection, accurately master EMU high-voltage cable use condition and life cycle, scientific guidance roof high-voltage cable overhaul and replacement, can effectively guarantee EMU operation safety and stability, substantially reduce EMU operation and maintenance cost expenditure.

The application provides a kind of test equipment for measuring buffer tape for high-voltage cable and its detection method, relating to the field of high-voltage cable auxiliary material detection, comprising: support, copper plate one, lifting device, copper plate one is arranged on the upper part of the support, the lifting device is arranged on the bottom of the support through insulating spacer, copper plate two is installed on the lifting platform of the lifting device;The insulating column is fixed through copper plate one, the measuring rod of the dial gauge is through the insulating column, the height of the measuring rod in the insulating column is adjusted by the limiting device, a plurality of insulating columns correspond to a plurality of dials;The upper terminal post is electrically connected with copper plate one, the lower terminal post is electrically connected with copper plate two, the upper terminal post and the lower terminal post are respectively electrically connected with the corresponding detection terminals of the multimeter, for connecting copper plate one and copper plate two into volume resistivity detection loop. Through the process of repeatedly adjusting the compression thickness, measuring resistance and calculating resistivity, a plurality of sets of volume resistivity data under different compression states can be obtained.

The present application relates to the technical field of insulating base preparation, in particular to an easy crosslinking cable insulating base and a preparation method thereof.The preparation method of the easy crosslinking cable insulating base comprises the following steps: pressurizing ethylene and feeding it into a first-stage tubular reactor, adding end olefins, di-olefins and initiators in front of each stage of the tubular reactor respectively to initiate a reaction, and obtaining a high-pressure polyethylene base, which is the easy crosslinking cable insulating base.The present application increases the content of double bonds and branched chains by adding di-olefins and end olefins, preferably adding di-olefins and end olefins at a certain position, increasing the reaction temperature, reducing the reaction pressure, using a high-temperature initiator instead of a low-temperature initiator and other methods, enhances the chain transfer reaction and copolymerization reaction, increases the content of double bonds and branched chains, and prepares the easy crosslinking cable insulating base.Using the easy crosslinking cable insulating base to produce high-voltage cable insulating material can reduce the amount of crosslinking agents, antioxidants and other additives, and better meet the use requirements of high-voltage cables.

The application relates to a cable multi-state sensing fault diagnosis method and system and a terminal, and relates to the technical field of power system monitoring.The application comprises the following steps: collecting a state sensing trigger signal of a high-voltage cable; a preset sensor array collects data of the high-voltage cable in response to the state sensing trigger signal, so as to generate working state data and working environment data; the working state data and the working environment data are analyzed to determine a cable fuzzy state of the high-voltage cable; according to the cable fuzzy state, feature extraction and fusion are performed on the working state data and the working environment data, so as to generate state-related multi-modal data; and the state-related multi-modal data is input into a preset cable fault diagnosis model for processing and analysis, so as to generate a cable fault diagnosis result.The application has the effect of improving the accuracy of cable fault type identification.

The application provides a high-capacity transmission high-voltage cable, which comprises a cable and a mounting mechanism arranged outside the cable, wherein the mounting mechanism comprises a sleeve, a mounting seat, a connecting pipe, a fixing seat, a limiting ring, a spring and a limiting bead; the sleeve is arranged outside one end of the cable, a limiting groove is formed in the outer wall of the sleeve; the mounting seat is sleeved outside the other end of the cable; the connecting pipe is arranged on the mounting seat; the fixing seat is fixed outside the connecting pipe; the limiting ring is sleeved outside the connecting pipe; the spring is sleeved outside the connecting pipe and connected to the fixing seat and the limiting ring at two ends respectively; a connecting hole is formed in the outer wall of the connecting pipe; and the limiting bead is arranged in the connecting hole. The mounting mechanism is additionally arranged outside the cable, so that the cable can be quickly installed, the sleeve and the connecting pipe can reinforce and protect the connection between the external equipment and the cable, and the influence of the external environment on the cable during long-term use is reduced.

The application discloses a high-voltage cable fault diagnosis method based on space-time attention, relates to the field of high-voltage cable fault diagnosis, and comprises the following steps: acquiring reference operation data of a high-voltage cable, and constructing a one-dimensional node path coordinate, a node space correlation matrix and a propagation time delay reference matrix; dividing a time window of a reference sampling interval, extracting partial discharge, sheath current and temperature characteristics, forming a reference state matrix, a fluctuation boundary matrix and a characteristic effectiveness mask; acquiring real-time monitoring data and constructing a real-time state matrix, calculating a boundary deviation matrix, extracting spatial deviation characteristics through CNN and extracting fault time sequence characteristics through LSTM; combining space attention and time attention to generate comprehensive fault diagnosis characteristics, outputting a fault type, a fault position and a probability, and realizing real-time diagnosis and explainable positioning of high-voltage cable faults.

This utility model discloses a fireproof and explosion-proof box for high-voltage cable joints, comprising two boxes connected at one end by a hinge and at the other end by a locking mechanism. Multiple honeycomb panels and reinforcing plates are provided on both sides of each box, with adjacent honeycomb panels and reinforcing plates staggered and fixed. Elastic clamping mechanisms are provided on opposite side walls of the box. Through-holes are provided at both ends of each box, with two through-holes on the same side corresponding to each other. This utility model can evenly distribute the impact force generated by an explosion across the entire explosion-proof box shell, preventing excessive local stress from causing the shell to crack. This significantly improves the overall strength and stability of the explosion-proof box, effectively reducing the impact of explosions on cable joints and the surrounding environment. Furthermore, it can quickly send signals when abnormal pressure or temperature occurs, alerting maintenance personnel to take appropriate measures to prevent further escalation of the accident, thus improving the safety and reliability of the power system.

The utility model relates to cable fault early warning positioning technical field, and disclose a kind of high voltage cable whole life cycle fault early warning positioning device, the high voltage cable whole life cycle fault early warning positioning device, including system main station screen cabinet and the cable body to be monitored.The high voltage cable whole life cycle fault early warning positioning device, to realize the on-line monitoring of high voltage cable whole life cycle, guarantee the safe and stable operation of power system, by being provided with system main station screen cabinet, intelligent integrated management unit, voltage travelling wave acquisition unit, current travelling wave acquisition unit, circulating current acquisition unit, cable partial discharge acquisition unit, current travelling wave sensor, grounding circulating current sensor and high-frequency current sensor, to collect the transient state travelling wave and steady component of cable operation process, it is analyzed and handled, predicts operating condition, and provides alarm and fault diagnosis information to fault cable, the insulation state of cable is monitored, permanent fault is early warned.

This utility model relates to a novel high-voltage cable coupler, comprising a coupler plug, a coupler socket, a measurement module, and an energy harvesting module. Windows and / or aviation sockets are provided on both the coupler plug and the coupler socket. The measurement module and the energy harvesting module are encapsulated within the entire cable coupler. The high-voltage cable coupler in this design has windows for wireless communication, optical detection, and image recognition functions. This design detects the ambient temperature and humidity, arc light, contact temperature, electrical quantities, and internal temperature of the high-voltage cable coupler, providing support for intelligent monitoring and status judgment, fault detection, and location of the high-voltage cable coupler. The energy harvesting module in this design features adaptive energy management, adapting to various complex environments, eliminating the need for an external power source, freeing it from energy constraints, improving equipment autonomy, reliability, and sustainability, and reducing maintenance costs.

The invention relates to a high-voltage system comprising: - a high-voltage line (1) with a conductor (2), an inner insulation (3), a shield (4) in the form of a braided shield, and an outer insulation (5), - a plug and / or screw connector (6) comprising a shield sleeve (8) contacted with the shield (4) and extending from one end of a housing (7) with at least one contact spring, a conductor pin (9) contacted with the conductor (2) and extending from the end of the housing (7), and insulation (10) between the shield sleeve (8) and the conductor pin (9), - a high-voltage unit comprising a unit housing (11), a busbar (13) and a pin tray with a busbar contact (12) contacted with the busbar (13) and a housing contact (14) contacted with the unit housing (11), wherein the conductor pin (9) is contactable with the busbar contact (12), wherein further insulation (15) is arranged between the housing contact (14) and the busbar contact (12), wherein the shield sleeve (8) is contactable with the housing contact (14), wherein the shield (4) of each high-voltage line (1) is connected to a housing of at least one power distribution unit (24), wherein the housing of the at least one power distribution unit (24) is connected to a chassis (23) or frame (23) via a potential equalization cable (21).

The application discloses a high-voltage cable grounding loop fault simulation device, comprising a device main body, wherein a standard cross-connection grounding loop module, a fault simulation module, a signal coupling injection module, a parameter acquisition module, a data analysis module and a man-machine interaction and control module are integrated on the device main body. Through the innovative design of high integration, precise adjustment and intelligent analysis, the application realizes the closed loop of 'high-fidelity reproduction' and 'automatic detection' of the high-voltage cable grounding loop fault in the laboratory environment, and significantly improves the authenticity of fault simulation, the automation degree of testing and the accuracy of diagnosis.

The application relates to the technical field of discharge signal collection, in particular to a high-voltage cable partial discharge signal synchronous collection method and system, which comprises the following steps: based on a multi-channel high-speed double-ADC architecture, synchronously collecting ground loop current signals and high-frequency current signals in the operation process of a high-voltage cable; calculating pulse frequency spectrum consistency and mutation phase fluctuation to obtain a discharge loop current abnormality; determining the pulse periodicity of the high-frequency current signals; extracting harmonic frequency parameters and energy attenuation parameters of the high-frequency current signals, calculating a harmonic abnormality, combining the pulse periodicity to obtain a pulse harmonic abnormality factor; performing weighted summation on the discharge loop current abnormality and the pulse harmonic abnormality factor to evaluate the reliability of the synchronously collected signals, and outputting a synchronous collection result of the high-voltage cable partial discharge. Therefore, the accuracy of the synchronous collection of the partial discharge signals is improved.

This invention provides a method and system for high-voltage cable fault location monitoring based on environmental factor coupling, belonging to the field of cable monitoring technology. The method specifically involves: establishing a coupling relationship between environmental factors based on historical cable operation data and corresponding historical environmental parameters, mapping multidimensional environmental data along the cable line to corresponding equivalent environmental parameters; identifying abnormal cable operation events based on the equivalent environmental parameters and cable status information, and obtaining the corresponding initial fault location; determining the environmental coupling weights of each distributed measuring point using fuzzy inference and inverse distance weighting, thereby correcting the initial fault location; and outputting cable status early warning information based on the event identification results. This invention establishes a coupling relationship to map multidimensional environmental parameters to equivalent environmental parameters, and combines dynamic weights generated by fuzzy inference and inverse distance weighting to achieve adaptive correction of the location results to environmental changes and signal quality differences, thereby improving its accuracy.

The invention relates to a method for manufacturing an assembly (2) for studying the aging of a high-voltage cable (1), the method comprising forming a multilayer stack comprising superimposing a first electrode layer (202), at least one first insulating polymer layer (201), a second electrode layer (203), such that the first insulating polymer layer (201) is arranged between the first (202) and second (203) electrode layers, and a separating layer (204) of the first (202) and second (203) layers, and winding the multilayer stack (20) at least partly on itself around a longitudinal direction (A2) to form the assembly (2).

The utility model relates to high -voltage cable connection technical field, concretely relates to a high -voltage connector, including insulator shell, the lateral surface of insulator shell is provided with the through -hole for high -voltage cable to pass, the inside of insulator shell is provided with pin needle subassembly, and pin needle subassembly is parallel to the setting of insulator shell's central axis, the one end of pin needle subassembly is away from the fixed connection of one end of pin peg subassembly with the wire in high -voltage cable, another end and the one end of pin peg subassembly fixed connection, another end of pin peg subassembly penetrates insulator shell, and is used for plugging in high -voltage equipment, make high -voltage cable with high -voltage equipment is connected. This high -voltage connector can easily realize the bending connection of high -voltage cable, greatly saves the space, reduces the space when high -voltage cable bending occupies, can be applicable to the place of limited space, solve the problem of the big space when directly bending high -voltage cable in prior art occupies.

This application relates to the field of high-voltage cable grounding detection technology, and discloses a high-voltage cable grounding detection system and method. The system includes an excitation module, an acquisition module, a processing module, and a power supply module connected in sequence. The excitation module injects voltage signals into the three-phase grounding wires and the main grounding wire of the high-voltage cable. The acquisition module acquires the current signals of the three-phase grounding wires and the main grounding wire after the voltage signals are injected. The processing module processes the current signals and calculates the corresponding resistance values ​​of the three-phase grounding wires and the main grounding wire based on the voltage and current signals. The power supply module supplies power to the excitation module, acquisition module, and processing module. The method corresponds to this system. This application enables accurate detection of the three-phase metallic sheath loop resistance and grounding grid resistance of high-voltage cables.