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11results about How to "Avoid partial discharge" patented technology
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Voltage transformer with staged winding high-voltage winding
ActiveCN222637027Uavoid partial dischargeprevent leakageTransformersTransformers/inductances coils/windings/connectionsTransformerInstrument transformer
The utility model relates to the technical field of transformers, in particular to a voltage transformer with a hierarchical winding high-voltage winding, which comprises a magnetic core and a primary winding wound on the magnetic core, the two ends of a coil wire of the primary winding are connected with two wiring terminals connected with a high-voltage circuit. Two ends of the primary winding are respectively provided with two side parts connected with a wiring terminal, and the two side parts are called high-voltage sections; the middle part of the primary winding is also provided with a middle part which is far away from the wiring terminals at two sides and is called a low-voltage section; an insulating layer is arranged between every two adjacent coil layers of the high-voltage section, and is called as a high-voltage insulating layer; an insulating layer is arranged between every two adjacent coil layers of the low-voltage section, and is called as a low-voltage insulating layer; the thickness of the high-voltage insulating layer is more than twice that of the low-voltage insulating layer; shielding paper is arranged between the high-voltage section and the low-voltage section and is called a shielding layer; the concentrated distribution of an electric field in the coil is avoided, the possibility of partial discharge is reduced, the capability of the insulating layer for bearing high voltage is improved, and the risk of partial discharge is reduced.
Owner:SHANGHAI DAYIHU POWER ELECTRICAL APPLIANCE
Insulated bearing cable anchor
ActiveCN224396153Uincrease contact areaImprove the state of stressTowersGlass fiberStructural engineering
The utility model provides a kind of insulating bearing cable anchor, comprising: connecting component, with power transmission line hardware connection and bear load;Core body lifting ring, accommodate the glass fiber reinforced silicone rubber wire harness wound to form core body and bear load;Clamp, the inner cavity of the clamp is horn shape, the horn shape inner cavity is consistent with the wire harness of the core body lifting ring wire slot tangent direction introduction, gather has been wound in the core body lifting ring, wire harness, which needs to be shaped, is shrunk into substantially cylindrical through the cylindrical outlet of the clamp;The connecting component is connected with the core body lifting ring, and the clamp is tightly clamped on the core body lifting ring. The utility model has the beneficial effects that: by the inner cavity of the clamp is horn shape, improve the stress state of wire harness, and by additionally provided glue injection hole groove A and glue injection hole B, form complete sealing structure after silicone rubber overall coating forming, improve the reliability of product and overall electromechanical performance.
Owner:秦国富 +1
A high-voltage DC bypass switch
PendingCN122136201AImprove anti-overturn performanceImprove structural stabilityElectric switchesEarthquake intensityClassical mechanics
This invention discloses a high-voltage DC bypass switch for improving reliability in areas with strong winds and high seismic intensity. It includes a switch body, a support bushing, and an operating mechanism. To enhance mechanical stability, a parallel insulating support structure is added beside the support bushing. This structure is rigidly connected to the flange at the top of the support bushing via a connecting plate, forming a triangular support frame. For the independent high-voltage node introduced by this structure, a split-type voltage equalization assembly is provided: a first voltage equalization ring is fixed to the top of the insulating support structure, and a second voltage equalization ring is fixed to the flange. Both voltage equalization rings are U-shaped, with opposite openings and electrical isolation, optimizing the electric field at two locations and effectively suppressing partial discharge. This invention synergistically solves the problem of improving the mechanical strength and insulation performance of high-voltage DC switches in harsh environments.
Owner:HENAN PINGGAO ELECTRIC
Transformer lightning protection system and transformer
PendingCN119274944AShorten the propagation distancemitigation of impairmentInstallation of lighting conductorsElectric component structural associationTransformerLightning Attacks
The invention relates to the technical field of power equipment protection, in particular to a transformer lightning protection system and a transformer, a lightning arrester is arranged at an outlet sleeve of the transformer or an electric reactor, and when lightning attack exists and lightning shock waves transmitted along a line exceed the protection level of the lightning arrester, the lightning arrester is arranged at the outlet sleeve of the transformer or the electric reactor. The lightning arrester arranged at the position of the outlet sleeve of the transformer or the electric reactor discharges firstly, lightning current is safely led into the ground, the amplitude of lightning voltage is limited below the lightning impulse level of protected equipment, and therefore the transformer or the electric reactor is effectively protected against lightning damage. As the lightning arrester is arranged at the outlet sleeve of the transformer or the electric reactor, the transformer can be protected to the maximum extent, lightning impacts are prevented from entering the transformer or the electric reactor, the propagation distance of lightning waves in a system can be shortened, attenuation and deformation of the lightning waves in the propagation process are reduced, and the protection effect of the lightning arrester is improved. The problem that an existing transformer lightning arrester cannot comprehensively protect a transformer is solved.
Owner:XIAN XIDIAN TRANSFORMER +1
A lightning arrester with synergistically enhanced insulation by a combination of a small umbrella and umbrella skirt hydrophobicity
PendingCN122739908AImprove surface electric field distributionCut off or delay the formation of
The application relates to the technical field of lightning arresters, and discloses a lightning arrester with an insulation function synergistically enhanced by a large umbrella and a small umbrella and umbrella skirt hydrophobicity, which comprises a mounting mechanism, the mounting mechanism comprises a top part fixedly connected to the lightning arrester, and an umbrella skirt two is fixedly connected to the outer wall of the lightning arrester; a flow guide mechanism is mounted on the outer wall of the lightning arrester; and a positioning assembly is mounted on the outer wall of the mounting mechanism. The umbrella skirt one and the umbrella skirt two are arranged, the umbrella skirt two has a large diameter, the creepage distance is increased, and the formation of a continuous water film can be cut off or delayed; when serious contamination or heavy rain occurs, the edge of the umbrella skirt two can naturally form a water dripping breakpoint, the water film between the adjacent umbrella skirt one and the umbrella skirt two cannot be connected, so that the continuous channel of the leakage current is blocked; the diameter of the umbrella skirt one is small, the surface electric field distribution of the umbrella skirt is optimized, and local discharge is prevented; in addition, the design of the small umbrella can make the arc or water drop between the large umbrellas extinguished at a low voltage.
Owner:CHENGDE VOLT-AMPERE ELECTRICAL ENG CO LTD
Battery monomer and preparation method thereof, battery and energy storage device
PendingCN121840021Aincrease capacityExtend standby storage timeFinal product manufactureCell component detailsElectrolytic agentThermodynamics
The invention relates to a battery monomer, a preparation method thereof, a battery and an energy storage device. The battery monomer comprises a frame, a pole plate and two diaphragms, the frame is arranged in a surrounding manner around a first direction and defines a mounting cavity penetrating along the first direction, and the pole plate is positioned in the mounting cavity and comprises a substrate fixedly connected with the frame and two active material layers with opposite polarities covering two opposite sides of the substrate in the first direction. The two diaphragms are both fixedly connected with the frame and located on the two opposite sides of the polar plate in the first direction, the two diaphragms are attached to the two opposite active material layers respectively, and the two diaphragms and the substrate jointly define two sub-plates which are adjacent in the first direction and are closed with each other. According to the invention, the problem of partial discharge caused by internal short circuit of the battery due to the fact that the active material is mixed into the electrolyte to pollute the electrolyte can be avoided, so that the battery capacity is improved, the standby storage time of the battery is prolonged, deep discharge caused by internal discharge can be avoided, pole plates are prevented from losing efficacy due to sulfation, and the service life of the battery is prolonged.
Owner:RUIZHI TONGCHUANG (NANJING) ENERGY STORAGE TECH CO LTD
Simulation driving optimization processing method for high-voltage test lead arrangement device
PendingCN122088195AAccurately capture electromechanical resonance effectsHigh structural reliabilityGeometric CADDesign optimisation/simulationStress distributionElement model
The invention discloses a simulation driving optimization processing method for a high-voltage test lead arrangement device, and relates to the technical field of power equipment, and the method comprises the following steps: S1, building a parameterized finite element model comprising a device and an air domain; s2, applying an alternating potential boundary to the finite element model, calculating the intensity of an alternating electric field, and extracting a pulsation electromagnetic force load frequency spectrum; s3, the load frequency spectrum is applied to a structure field for kinetic analysis, and inherent frequency, peak response displacement and stress distribution are obtained; s4, updating the geometric boundary of the device according to the peak response displacement, and performing electrostatic field simulation to obtain distortion electric field intensity; and S5, by taking the quality of the device as a target and taking the distortion electric field intensity, the stress distribution and the inherent frequency as constraints, adjusting the variables to be optimized, repeating the steps S1 to S4 until convergence, and outputting optimal structure parameters. The problems that under the dynamic working condition, a lead device is prone to fatigue fracture and transient breakdown, and it is difficult to consider both electrical safety and lightweight construction at the same time are solved.
Owner:HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER
Transformer and its riser, plug-in unit and conductor connector
ActiveCN109741923BGood shielding functionGood dispersion electric field strengthCoupling contact membersElectric component structural associationElectrical field strengthElectrical conductor
The present invention relates to a conductor connector, and in particular to a conductor connector for a transformer. In addition, the present invention also relates to a transformer plug-in unit using such a conductor connector, and a transformer riser and a transformer using such a transformer plug-in unit. The conductor connector comprises a cylindrical connector body, a first end that can be connected to the internal lead, and a second end that can be opposite to the bushing, and a circle of side surfaces located between the first end and the second end, wherein the outer edge of the first end has a chamfer, the chamfer is in an arc shape and extends from the first end to the side surface, the outer edge of the second end is provided with a flange protruding axially toward the bushing, the flange is annular, and its surface is in an arc shape, and its radial outer side wall serves as an extension of the side surface, and the contact surface between the connector body and the bushing is located radially inside the flange. The chamfer has the function of dispersing the electric field strength, thereby avoiding the occurrence of local discharge and breakdown caused by field strength concentration, and the flange serves as a shielding layer, which can effectively avoid the influence of electric field concentration at the contact surface.
Owner:SIEMENS TRANSFORMER WUHAN
Anti-loosening wedge-shaped wire clamp and installation method thereof
ActiveCN114006185BReduce the difficulty of high-altitude installationImprove installation efficiencyContact member assembly/disassemblyClamped/spring connectionsMechanical engineeringWedge shape
Owner:STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED +2
Control cabinet applied to hydropower station and provided with dehumidification and dust removal device
PendingCN119255571Aavoid enteringavoid partial dischargeCasings/cabinets/drawers detailsDispersed particle separationDust controlEnvironmental engineering
The control cabinet comprises a cabinet body (1), a first ventilation opening (11) is formed in the top of the cabinet body (1), a second ventilation opening (12) is formed in the side portion of the cabinet body (1), a dust collection opening (13) is formed in the bottom of the cabinet body (1), a draught fan (2), a pulse air pipe (3) and a dust collector (4) are arranged outside the cabinet body (1), and a filter cover is arranged at the air inlet end of the draught fan (2). The air outlet end of the fan (2) is communicated with the interior of the cabinet body (1) through a first ventilation opening (11), the air outlet end of the pulse air pipe (3) is communicated with the interior of the cabinet body (1) through a second ventilation opening (12), the air outlet ends of the fan (2) and the pulse air pipe (3) are provided with heaters, and the dust collection end of the dust collector (4) is communicated with the interior of the cabinet body (1) through a dust collection opening (13). The device has the characteristics of automatic drying and comprehensive dust removal.
Owner:STATE GRID XINYUAN GRP CO LTD +1
A GIS pluggable terminal based on spring radial compression and its assembly method
ActiveCN121035896Beffective contactMeet long-term stable operation needsCable inlet sealing meansCable terminationsClassical mechanicsElectrical connection
This invention provides a spring-driven radial compression-based pluggable GIS terminal and its assembly method, belonging to the technical field of conductive connection equipment. The terminal includes an epoxy sleeve, terminals, cable cores, stress control components, a stop sleeve, a cone support, a cone support pressure plate, a spring propulsion assembly, and a tail tube. The terminals are disposed within the epoxy sleeve, with one end connected to the GIS equipment via a tapered bevel, and the other end equipped with a watch strap contact finger. The cable core is plugged into the terminals. The stress control component is disposed within the epoxy sleeve and contains a stress cone. The stop sleeve contacts the stress control component. The cone support and the cone support pressure plate are connected via a tightening screw. The spring propulsion assembly includes several springs and guide rods, with the springs positioned between the cone support and the cone support pressure plate. This invention optimizes the electric field distribution, enhances contact stability, improves working efficiency, and reduces processing costs.
Owner:ANDIP TECH CO LTD