18 results about "Ampacity" patented technology

The application relates to the technical field of electrical connection equipment, and discloses a high-current small bus plug-in box rotary plug, which is used to solve the problems that the structure of key conductive components is single, the setting space is cramped, the conductive temperature rises fast, and the components are prone to aging in the prior art. The application is characterized in that the space of the regular octagonal flame-retardant PC shell and the insulating partition plate is optimized, the T2 oxygen-free copper Z-shaped large-section pin array is symmetrically arranged, the uniform contact pressure guaranteed by the spring assembly is matched, the conductive cross-sectional area is 2-3 times higher than that of the traditional reed structure, the galvanic corrosion of dissimilar metals is effectively avoided, the current-carrying capacity and the current transmission stability are greatly improved, the multidirectional heat exchange channels formed by the regular octagonal included angle, the pin array bending gap and the internal cavity are combined, the separation and heat dissipation of the insulating partition plate are combined, the cold and hot air efficient convection is realized, and the temperature rise of the key components is significantly reduced.

The utility model discloses a kind of wiring fixed frame and eVTOL aircraft, wiring fixed frame includes: first assembly block, second assembly block and base;Multiple first round grooves and multiple second round grooves are provided on base, multiple third round grooves are formed with recess on the side of first assembly block close to base, multiple fourth round grooves are formed with recess on the side of second assembly block close to base;Any first round groove and corresponding third round groove cooperate to form first wire arrangement hole, any second round groove and corresponding fourth round groove cooperate to form second wire arrangement hole;Fifth round groove is provided on the side of first assembly block, sixth round groove is provided on the side of second assembly block, fifth round groove and sixth round groove cooperate to form fixed hole.The utility model is arranged with multiple wire arrangement holes and fixed holes, wire rod is arranged according to preset path and position, increase the spacing between wire rod, reduce signal interference caused by electromagnetic induction, reduce the thermal aggregation effect temperature rise of bundled cable too high to cause ampacity reduction, ensure the accuracy of signal transmission.

This invention relates to the field of power transmission dispatching technology, specifically a dynamic load balancing dispatching method for power transmission lines based on reinforcement learning. The method involves: acquiring absolute elevation data, operating sag state parameters, and the elevation data of the terrain below to construct the insulation margin of the transmission line; acquiring meteorological data, and deriving the upper limit of stable operation based on the insulation margin and settlement displacement data, combined with the conductor expansion coefficient and span parameters, and calculating the safe current carrying capacity limit of the transmission line based on the thermal balance principle; obtaining tension distortion data based on the relative elevation difference change of the support structure and the real-time temperature quantification of the conductor, and mapping it together with the real-time branch power flow to the edge weights of the topology model, outputting an updated topology model; calculating the settlement deterioration rate, and inputting it along with the updated topology model into a reinforcement learning network to generate an initial dispatching scheme set; converting the initial dispatching scheme set into expected branch currents, verifying them using the safe current carrying capacity limit, outputting a safe candidate scheme set, and performing balanced dispatching.

The utility model relates to a power distribution equipment technical field, concretely relates to a new type of pin structure for plug -in bus, including pin body, the pin body includes connecting piece, the connecting piece both sides symmetry is equipped with copper insert piece vertical section, copper insert piece vertical section bottom is equipped with the electric contact inclined surface section that inwardly bends, and the access angle groove that one end is contacted between two electric contact inclined surface sections forms for conductor insertion, and the connecting piece bottom end face both sides symmetry is equipped with spring piece connecting section, spring piece connecting section bottom is equipped with transition inclined surface section, transition inclined surface section bottom is equipped with the compression fixed section that extends to copper insert piece vertical section and electric contact inclined surface section between, and compression fixed section and electric contact inclined surface section abut. The utility model discloses the pin body after the access conductor, and the pin body and conductor are surface contact, make the contact surface bigger, reduce the contact resistance, improve the carrying capacity, thereby reached the purpose that improves the contact performance.

The application provides a medium-voltage intelligent cable with a graphene functional layer and a preparation method thereof. The medium-voltage intelligent cable comprises, from inside to outside, a cable core, a filler layer, a wrapping tape layer, an inner liner layer, an armor layer, a graphene functional composite tape layer and an outer sheath layer. The armor layer comprises an armor base, and a graphene coating is arranged on the outer surface of the armor base. A distributed temperature measurement optical fiber is embedded in the graphene functional composite tape layer. The medium-voltage intelligent cable of the application is designed with a graphene functional layer, which significantly improves the heat dissipation effect and current-carrying capacity of the cable. The armor layer has a dual function of positioning damage and cable stress sensing, and the cable state early warning intelligence is improved. By embedding an optical fiber in the composite tape layer, cable temperature measurement response is achieved, the response time is significantly improved, and no additional independent optical unit is needed. The process is highly compatible with the existing production line, and the process cost is effectively controlled.

The utility model relates to a kind of high-voltage cable conductors, which include a center layer and a conductor layer. The center layer includes a fiber optic cable assembly. The conductor layer covers the center layer and includes multiple composite conductor layers arranged in a first direction. The composite conductor layers are formed by twisting insulated monofilaments, bare conductors, or a combination of insulated monofilaments and bare conductors in a predetermined ratio. The high-voltage cable conductor significantly reduces AC and DC resistance at 50Hz power frequency compared to traditional conductors, increases the current-carrying capacity of the cable conductor, greatly reduces the amount of enameled conductor used, and is suitable for 110kV and above high-voltage transmission systems. It also has online detection of cable operating status, low loss, low cost, and high reliability.

This document describes a copper wire and the method for preparing it. The copper wire described herein has improved ampacity compared to conventional ACSR copper wire, as well as reduced buckling or bending compared to conventional bare ACSR conductor and / or ACSR copper wire.

The cable line dynamic capacity increasing and state evaluation system based on multi-source data fusion belongs to the technical field of power cable and solves the technical problems that the cable line unit asset utilization is insufficient due to the static rated current and the state evaluation method is lagging behind and difficult to realize predictive maintenance. The data acquisition layer of the present application collects conductor temperature, sheath circulating current, partial discharge and environmental parameters; the edge computing layer carries out pretreatment and feature extraction; the model construction and algorithm layer includes a dynamic current capacity calculation module and a state evaluation module, the former uses an equivalent thermal circuit model, a recursive least squares method and a Newton-Raphson iteration method to solve the dynamic current capacity and a short-term allowable overload time window, the latter uses a support vector machine classifier and a long short-term memory network bidirectional coupling to realize operation state classification and trend prediction; the decision output layer fuses multi-source information to generate capacity increasing decision and state evaluation results. The present application is suitable for cable line dynamic capacity increasing and state evaluation.

The utility model discloses a direct current charging cable belongs to cable field, include: two power line group, and power line group includes the cooling pipe, power conductor and power insulation layer that wrap in proper order, core non -shielded control line group, core shielded control line group, auxiliary power cord and ground wire, and the sheath that wraps in power line group's power insulation layer, core non -shielded control line group, core shielded control line group, auxiliary power cord and ground wire outside, core non -shielded control line group includes and wraps in proper order first control conductor group and winding layer, still includes the filling rope between first control conductor group and winding layer, and the sheath wraps in winding layer outside. First control conductor group includes and wraps in proper order first control conductor and first control insulation layer, and winding layer wraps in first control insulation layer outside. The utility model discloses technical effect lies in it not only quality is small, and the current -carrying capacity is high.

The application discloses a power transmission line scheduling method and device, and belongs to the technical field of power dispatching. The method comprises the following steps: acquiring real-time monitoring data and structural parameters of a power transmission line; calculating the calculated sag of the power transmission line according to the measured conductor temperature, the measured wind speed and the structural parameters; constructing a wind speed calculation function and a temperature calculation function containing to-be-optimized empirical coefficients, to-be-optimized conductor surface heat absorption rates and to-be-optimized conductor surface emissivities; constructing a joint objective function with the minimum overall error based on the measured sag, the measured conductor temperature, the measured wind speed, the calculated sag, the wind speed calculation function and the temperature calculation function; solving the joint objective function to obtain the optimized conductor surface heat absorption rates and the conductor surface emissivities, and calculating the maximum load current of the power transmission line based on the optimized parameters, the real-time monitoring data and the structural parameters, so that the power transmission line is scheduled. Therefore, the application can solve the problem of low power dispatching and power supply efficiency in the prior art.

The application relates to the technical field of multiple-capacity cables, and provides a multiple-capacity low-sag overhead cable, which comprises a center frame body, two signal line cores, two power line cores, an isolation layer, a plurality of first stabilizing members, a plurality of second stabilizing members, a shielding protective layer and an outer protective layer, the two signal line cores are symmetrically distributed on the inner sides of the two ends of the center frame body, the two power line cores are symmetrically distributed on the two sides of the center frame body, the isolation layer is arranged on the outer sides of the center frame body and the power line cores, the plurality of first stabilizing members are one-to-one correspondingly distributed in cavities formed by the isolation layer, the center frame body and the power line cores, the plurality of second stabilizing members are one-to-one correspondingly distributed in cavities formed by the center frame body, the power line cores and the first stabilizing members, and the shielding protective layer and the outer protective layer are sequentially arranged on the outer side of the isolation layer. According to the multiple-capacity low-sag overhead cable, the problems of large sag and limited load capacity in the prior art can be effectively solved, and the performance and applicability of the cable are remarkably improved.

This application relates to an extruded busbar, belonging to the technical field of extruded busbar products. It includes a conductive busbar and an insulating sleeve. The conductive busbar is a single-layer or multi-layer copper material or braided busbar. An insulating sleeve is integrally covered on the outer surface through an extrusion process. The outer surface of the insulating sleeve has one or more uniform raised structures. This shape separates the stacked extruded busbars, thus providing wear resistance and heat dissipation. The one or more raised structures on the inner and outer surfaces of the insulating sleeve allow the insulating layer to extend and expand during product bending, thereby preventing the insulating sleeve from cracking under localized stress. The extruded busbar structure of this invention uses an extrusion process to integrally form the conductive busbar and insulating sleeve. It has advantages such as simple production process, easy control of extrusion precision, high degree of automation, good multi-dimensional formability, reasonable and compact structure, and beautiful appearance. It also possesses excellent wear resistance, heat dissipation, high current carrying capacity, and excellent insulation performance.

This utility model relates to the field of circuit breaker technology, specifically a copper busbar adapter cable extension assembly, including a circuit breaker and a terminal block. The circuit breaker has a connecting groove on its surface, and the terminal block is bolted into the connecting groove. A movable plate is movably connected to the surface of the terminal block, and a wiring plate is movably connected to the end of the movable plate away from the terminal block. This utility model, through the connection between the circuit breaker and the connecting groove, achieves a connection support effect for the terminal block on the circuit breaker. Through the connection between the terminal block and the movable plate, and the connection between the movable plate and the wiring plate, the wiring plate facilitates connection when the cable lug is wider than the connecting groove. Furthermore, the staggered distribution of the terminal block and wiring plate on the connecting groove increases electrical clearance. The overlap width at the end overlapping with the switch terminal is equal, expanding the terminal block width by 1.5 times, thereby increasing current carrying capacity and reducing temperature rise.

This utility model discloses an overload switch with manual reset, including an upper cover with a lower cover snapped onto it. A movable reset button is located inside both the upper and lower covers, penetrating the lower cover. An output conductive plate and an input conductive plate are respectively located on either side of the reset button. Ribs fixing the positions of the output and input conductive plates are located inside the lower cover, also penetrating the lower cover. The reset button is Y-shaped, with one bottom end penetrating the lower cover and springs fitted at both ends of its upper side. The ends of the springs furthest from the reset button are engaged with the upper cover. A through hole is formed in the center of the reset button. This utility model belongs to the field of overload switch technology. Specifically, by increasing the area of ​​the bimetallic strip and eliminating the central hollow section, the current carrying capacity is increased, and the sensitivity to temperature is reduced, providing excellent protection for appliances with a current rating of 16A or less.

The utility model relates to a kind of high-voltage cable and high-voltage cable system, and the high-voltage cable includes center layer and conductor layer. Among them, the center layer is formed by twisting multiple insulated filaments;Conductor layer, coated center layer, conductor layer includes multiple composite conductor layers sequentially arranged along the first direction, composite conductor layer is formed by twisting multiple insulated filaments, or multiple bare conductors are twisted to form, or insulated filaments and bare conductors are twisted to form according to preset proportion. The above-mentioned high-voltage cable, the center layer uses insulated filament, the conductor layer uses insulated filament or bare conductor or the combination structure of both, suppresses skin effect, ensures uniform distribution of current, improves cable conductor carrying capacity;At the same time, it greatly reduces the amount of enameled conductor, has small size, low loss, high reliability.

This invention relates to the field of copper busbar design and manufacturing technology, and particularly to a method and apparatus for evaluating and selecting the current carrying capacity of copper busbars. The method includes the following steps: obtaining demand constraints, determining candidate specifications, identifying thermal resistance status, evaluating actual current carrying capacity, and providing output selection recommendations. This invention achieves accurate nonlinear evaluation of the current carrying capacity of thick copper busbars and scientific selection under limited installation space conditions by obtaining the expected current carrying capacity requirement and installation space constraints of the target electrical circuit, determining the geometric parameters of candidate copper busbars, comparing the copper busbar thickness with a critical thickness threshold determined based on the coupling relationship between internal thermal resistance and heat dissipation surface area, constructing and solving a current carrying capacity evaluation equation based on the principle of thermal balance and boundary layer theory, and comparing the actual current carrying capacity evaluation value with the expected current carrying capacity requirement value to generate selection recommendations. This solves the defect in existing technologies where the current carrying capacity of copper busbars is approximated as a linear proportional relationship with the cross-sectional area, leading to inaccurate evaluation of thick copper busbars.

This invention discloses a method and system for calculating the current-carrying capacity and assessing the health status of high-voltage direct current (HVDC) cables. The method includes dividing the cable into a first conventional heat dissipation section, a high-resistance section, and a second conventional heat dissipation section based on the identification results of high-resistance sections; constructing a first heat conduction equation for the first and second conventional heat dissipation sections; constructing a second heat conduction equation for the high-resistance section; solving the first and second heat conduction equations using boundary coupling conditions of continuous temperature and continuous heat flux density at the junction of adjacent sections as constraints to obtain the axial temperature distribution of the cable; based on the axial temperature distribution, using the highest allowable temperature of the conductor as a constraint, using a temperature-resistance coupled double-layer iterative method to deduce the maximum allowable current-carrying capacity of the cable; and calculating the temperature consistency between the measured temperature and the axial temperature distribution to perform cable health classification and defect location. This invention can effectively improve the accuracy of current-carrying capacity calculation and achieve quantitative assessment of cable aging status and accurate location of potential defects.