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1699results about "Electric component structural association" patented technology

Transformer equipment oil leakage monitoring method and system based on image recognition

The invention discloses a transformer equipment oil leakage monitoring method and system based on image recognition, relates to the technical field of image processing, and effectively eliminates static background interference by constructing a standardized image sequence S (t), performing gray gradient analysis and pixel feature extraction, recognizing candidate oil spot areas and constructing a disturbance active score Sx. The edge structure and the morphological stability coefficient of the dynamic oil stain suspected area are further extracted, and the credible level quantitative judgment of the dynamic oil stain suspected area is realized by integrating the characteristic indexes and the morphological stability coefficient, so that the dynamic identification capability and the anti-interference capability are realized; the oil leakage identification accuracy and the system automation risk response capability in a complex environment are improved, false alarm and missing alarm are effectively avoided, and the operation safety of equipment is guaranteed.
Owner:SHANDONG DACHI ELECTRIC

System and method for acquiring and processing dry data of transformer

The invention discloses an acquisition and processing system and method for dry data of a transformer, and relates to the technical field of data processing. Comprising the following steps: step 1, multi-source data real-time acquisition and edge preprocessing; 2, constructing a drying end point prediction model; 3, constructing a composite objective function, and solving the composite objective function by adopting a multi-objective evolutionary algorithm; 4, performing real-time correction and feedback; according to the method, key parameters in the drying treatment process are monitored in real time, an accurate drying end point prediction model is automatically constructed, heating and air exhaust curves are dynamically optimized according to the real-time working condition and the production strategy, and traditional manual blind judgment and static presetting are replaced; and meanwhile, the operation energy consumption is remarkably reduced, the optimal balance of the energy consumption and the production efficiency is realized through a multi-objective evolutionary algorithm and an online Kalman filtering correction closed loop mechanism, the drying quality and the equipment safety are improved, the energy cost is greatly saved, and the dual requirements of modern intelligent manufacturing for flexibility, energy conservation and consumption reduction are met.
Owner:JIANGSU WEILAN DIGITAL INTELLIGENCE TECH CO LTD

High-safety transformer

The invention relates to the technical field of transformers, in particular to a high-safety transformer which comprises a transformer body and a monitoring mechanism, and the monitoring mechanism comprises a processor, a base, a control core, a driving wheel and a visual assembly. The base is provided with a containing cavity, an input flow channel and an output flow channel, the input flow channel and the output flow channel extend to the containing cavity, and the other ends of the input flow channel and the output flow channel communicate with an oil tank. A filtering assembly is arranged in the output flow channel, and the visual assembly is embedded in the inner wall of the output flow channel. The control core is rotationally matched with the containing cavity and provided with a radial through hole, and a control rod is arranged in the radial through hole in a sliding fit mode. The driving wheel is rotatably matched with the base. One end of the control rod is eccentrically hinged to the driving wheel. The visual component is used for acquiring image data of the surface of the filter component, and the processor is used for evaluating the impurity content in the insulating oil according to the impurity quality of the surface of the filter component. According to the utility model, the automatic monitoring of the insulating oil can be realized in the operation process, prompts can be given out in time, and the safety supervision strength is effectively improved.
Owner:SICHUAN SPECIAL TRANSFORMER FACTORY

Transformer with high-temperature early warning device

The invention relates to the technical field of transformers, in particular to a transformer with a high-temperature early warning device, which comprises a base and a transformer body fixedly mounted on the base, and further comprises a temperature control system, and the temperature control system is used for monitoring the temperature of the transformer body and dynamically analyzing the transformer body. A plurality of sets of cooling fins are fixedly connected to the outer portion of the transformer body, and a plurality of sets of mounting frames are fixedly connected to the base. In the invention, aiming at the defect of incomplete monitoring of a traditional temperature sensor, the temperature control system can realize comprehensive temperature monitoring and dynamic operation analysis of the transformer body, accurately capture internal complex temperature field distribution, and avoid the problem of insulation aging acceleration caused by local high-temperature leak detection; compared with an existing single threshold value control mode, intelligent early warning is achieved through a dynamic analysis technology, a control strategy can be adjusted according to real-time temperature changes, and the limitation that a traditional method lacks state perception is overcome.
Owner:HEBEI HAOZHENG ZHENHE TRANSFORMER CO LTD

Intelligent heat dissipation control system for operation of transformer

The invention belongs to the technical field of transformer heat dissipation control, and particularly discloses a transformer operation intelligent heat dissipation control system, which comprises a heat dissipation equipment layout module, a temperature monitoring module, a hot spot identification module, a hot spot diffusion analysis module, an airflow control module and an execution feedback module which are sequentially coupled and connected, an infrared thermal imaging sensor array and a fan group are arranged in a transformer according to heat source distribution, surface temperature distribution is collected in real time through the infrared thermal imaging sensor array, and a hot spot area and the diffusion direction of the hot spot area are recognized; and upstream, midstream and downstream fans are selected, and a directional relay cooling airflow chain is constructed through time sequence difference pulse and rotating speed hierarchical control, so that prospective intervention on a current hot spot and a potential diffusion path is realized, heat dissipation control has local accurate regulation and control capability with dynamic evolution characteristics, and the fan energy consumption is reduced while the heat dissipation efficiency is improved.
Owner:SHANDONG TAISHUN ELECTRIC CO LTD

Self-monitoring transformer

The invention provides a self-monitoring transformer, and belongs to the technical field of transformers. Wherein the piston is arranged on the first reference pipe, and the piston rod penetrates through the sealing plate. The filter plate is arranged in the first reference pipe. The piston rod is provided with a conveying flow channel, and the area between the piston and the filter plate is communicated with the conveying flow channel. A first one-way assembly is arranged in the conveying flow channel. A second one-way assembly is arranged at the end, away from the sealing plate, of the first reference pipe. The plug rod is driven by the driving assembly in a reciprocating mode. The visual assembly is arranged in the first reference tube. The processor is used for judging the health degree of the insulating oil in the transformer body according to the image data acquired by the visual assembly. The transformer insulating oil monitoring system can continuously and autonomously monitor the actual condition of the transformer insulating oil, avoids the defects of manual monitoring, and effectively improves the operation safety of the transformer.
Owner:SICHUAN SPECIAL TRANSFORMER FACTORY

Coil assembly for wireless power transmission and power transmission system

A coil assembly for wireless electrical power transmission includes a plurality of external connecting terminals, a power feeding coil, a resonant capacitor electrically connecting with the power feeding coil, and busbars each of which electrically connects between the external connecting terminals.
Owner:DENSO CORP

Method for inhibiting internal misfire caused by turn-to-turn short circuit of dry-type air-core reactor

The invention provides a method for suppressing internal misfire caused by turn-to-turn short circuit of a dry-type air-core reactor, and belongs to the technical field of dry-type air-core reactors. A turn-to-turn short circuit fault detection device combining differential protection and infrared thermal image detection is established to form a three-dimensional turn-to-turn short circuit feature vector, a four-dimensional internal misfire minimum ignition vector is obtained, and a fire development prediction model is established based on an Arrhenius equation. A double-layer game model for minimizing the upper-layer fire loss and minimizing the lower-layer fire extinguishing cost is constructed to optimize five-dimensional suppression vector parameters, and coordinated actions of suppression equipment such as power-off protection, forced ventilation, temperature suppression and inert gas release are controlled in real time through a suppression vector parameter adjustment function. The technical problem of fire suppression measure starting lag or excessive response caused by difficulty in accurately predicting the opportunity and degree of development of the turn-to-turn short circuit fault of the dry-type air-core reactor into the internal fire disaster is solved.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY +4

Transformer high-voltage lightning arrester mounting bracket

The utility model relates to the technical field of transformer parts, and provides a transformer high-voltage lightning arrester mounting support which comprises a supporting transverse plate, a bearing vertical plate, a mounting frame plate, an adjusting unit and a limiting unit. One end of the supporting transverse plate is hinged with the bearing vertical plate, and the other end is fixed with the mounting frame plate; the adjusting unit is arranged above the supporting transverse plate, one end of the adjusting unit is hinged to the bearing vertical plate, the other end of the adjusting unit is fixed to the mounting frame plate, and the adjusting unit is provided with a sliding assembly used for driving the bearing vertical plate to be close to or away from the mounting frame plate; a limiting unit is installed at the upper end of the bearing vertical plate and comprises a supporting disc and a clamping assembly arranged on the supporting disc. The supporting disc is used for supporting a base of the lightning arrester, and the clamping assembly is clamped on the side wall of the base of the lightning arrester. The lightning arrester is fixed in a clamping mode, rapid installation of the lightning arrester is achieved, and the installation and disassembly efficiency of the lightning arrester is improved.
Owner:HAINAN JINPAN INTELLIGENCE TECH CO LTD +1

Shock-sensing type automatic power-off device for large transformer

The embodiment of the invention provides a vibration-sensing automatic power-off device for a large transformer. The vibration-sensing automatic power-off device comprises a shell, the extending end of the first conducting rod is fixed to the shell and extends into the shell, and the other end of the first conducting rod is located outside the shell and connected with the transformer. The leading-in end of the second conducting rod is led into the shell; the plurality of locking mechanisms are arranged on the inner wall of the shell; the acceleration monitoring unit is installed on the shell and used for monitoring the acceleration of the device and generating a corresponding monitoring signal. In a normal state, the second conducting rod is clamped by the locking mechanism, so that the first conducting rod and the second conducting rod are conducted; when an earthquake occurs, the central control unit triggers the circuit breaker to be disconnected, the locking mechanism relieves clamping of the second conducting rod, and dual protection of electrical isolation and mechanical breaking is formed. And after the earthquake, the locking mechanism automatically resets and recovers conduction. The automatic power-off device has the full-process response capability of earthquake real-time sensing and quick response disconnection and reset, effectively prevents potential safety hazards such as short circuit and fire caused by an earthquake, and improves the survivability of power equipment in a strong earthquake environment.
Owner:SICHUAN POWER EHV OVERHAUL

Mechanical flux-adjusting stator separation type transformer

The invention provides a mechanical flux-adjusting stator separation type transformer. The mechanical flux-adjusting stator separation type transformer comprises a first stator assembly, a second stator assembly, a first rotor and a second rotor, a first air gap is formed between the first rotor and the first stator assembly; a second air gap is formed between the second rotor and the second stator assembly. The first stator assembly comprises a plurality of U-shaped iron cores and a plurality of permanent magnets which are respectively arranged in gaps among the U-shaped iron cores; the second stator assembly comprises a plurality of stator teeth which are in one-to-one correspondence with the U-shaped iron cores or the permanent magnets. When the central lines of the U-shaped iron cores and the central lines of the stator teeth are in one-to-one correspondence and coincide, the permanent magnet generates two first permanent magnet linkages. When the center lines of the permanent magnets and the stator teeth are in one-to-one correspondence and coincide, the permanent magnets generate a first permanent magnet flux linkage and a second permanent magnet flux linkage. The invention provides a mechanical magnetic adjustment stator separation type transformer, and aims to solve the problem that an iron core magnetic field of a traditional motor-transformer integrated product cannot be adjusted in the prior art.
Owner:STATE GRID HEBEI ELECTRIC POWER CO LTD +1

Fireproof and explosion-proof safety transformer

The invention discloses a fireproof and explosion-proof safety type transformer, and relates to the technical field of transformers, one side of the top end of an embedded fixing box is connected with an outer row fixing pipe in a penetrating manner, the top end of the inner side of the outer row fixing pipe is fixedly provided with a pressing spring, and the bottom end of the pressing spring is fixedly provided with an I-shaped clamping frame; a clamping sealing ring is fixed to the position, corresponding to the I-shaped clamping frame, of the inner side of the outer exhaust fixing pipe, a plurality of exhaust fixing holes are formed in the outer side end of the outer exhaust fixing pipe at equal intervals, and isolation double-layer sleeves are symmetrically welded to the top end of the inner side of the embedded fixing box. The situation that the environment is polluted due to the fact that transformer oil overflows when hot steam is exhausted is avoided, meanwhile, resources are recycled, resource waste is reduced, the transformer oil is supplemented in real time, stability of internal protection is guaranteed, meanwhile, an internal fire extinguishing component is used for directly conducting fire extinguishing treatment on the interior, and the environment is protected. And the condition of high-pressure deflagration and explosion caused by internal fire is avoided.
Owner:INNER MONGOLIA UNIV OF TECH

Primary resonance elimination device of power distribution network voltage transformer and management and control method

The invention provides a primary resonance elimination device of a power distribution network voltage transformer and a management and control method, and relates to the technical field of voltage transformer resonance elimination. The primary resonance elimination device comprises a primary resonance elimination resistor, a primary resonance elimination power electronic device, a standby resonance elimination resistor and a standby resonance elimination power electronic device; the primary resonance elimination resistor and the primary resonance elimination power electronic device are connected in series and then are connected in series between a neutral point of the power distribution network voltage transformer and a ground wire; the standby resonance elimination resistor and the standby resonance elimination power electronic device are connected in series, one end of the standby resonance elimination resistor and the standby resonance elimination power electronic device which are connected in series is connected with a neutral point of the power distribution network voltage transformer, and the other end is grounded; the primary resonance elimination device further comprises a current transformer and a temperature sensor; the temperature sensor is used for monitoring the temperature values of the primary resonance elimination resistor and the standby resonance elimination resistor; the current transformer is assembled on a line where the primary resonance elimination resistor and the standby resonance elimination resistor are grounded together and used for monitoring the value of current flowing through the primary resonance elimination device.
Owner:GANZI POWER SUPPLY CO OF STATE GRID SICHUAN ELECTRIC POWER CO

Adjustable assembly type transformer

The invention belongs to the technical field of transformers, and discloses an adjustable assembly type transformer which comprises a transformer body, an oil conservator is arranged on the top of the transformer body in a communicating mode, the adjustable assembly type transformer further comprises a supporting assembly, the supporting assembly is fixedly installed on the side portion of the transformer body, and the supporting assembly communicates with the oil conservator. The exhaust through groove of one adapting pipe keeps communicating with the connecting pipe, after the weight of a drying agent in the adapting pipe communicating with the connecting pipe reaches a set value, the magnetic force of the first magnet cannot meet the requirement for adsorption and fixation of the adapting pipe at the moment, and the adapting pipe rotates with the fixing shaft rod as the center shaft; the silica gel desiccant saturated in adsorption rotates to the bottom end of the fixed shell, the next adapting pipe is adsorbed by the first magnet and communicates with the connecting pipe through the exhaust through groove, and therefore sucked gas can be dried through the desiccant in the next adapting pipe, the replacement frequency of the desiccant in the respirator can be reduced in the process, and the replacement efficiency of the desiccant in the respirator is improved. And therefore, the maintenance cost of the respirator is reduced.
Owner:SHANXI JIDA VOLTAGE TRANSFORMER CO LTD

Device for inductive energy transmission in a human body and use of the device

The invention relates to a device (10) for inductive energy transmission into a human body (1), having a transmitter coil (24) and / or a receiver coil (14) having a first magnetic core (26) and a resonance or choke coil (16, 34) having a second magnetic core (32), wherein the first magnetic core (26) forms a part of the second magnetic core (32).
Owner:KARDION GMBH

A power transformer device with monitoring function

The present invention relates to the technical field of power transformers and discloses a power transformer device with a monitoring function, comprising a heat dissipation frame, an inner wall of the heat dissipation frame being fixedly connected to a transformer body, a protective device being provided on the right side of the transformer body, a detection device being provided on the left side of the transformer body, an inner wall of the heat dissipation frame being fixedly connected to a bottom plate, a cleaning device being provided on the top of the bottom plate, a ventilation fan being fixedly connected to the inner wall of the bottom plate, an ash storage device being provided on the inner wall of the bottom plate, and a support rod being fixedly connected to the bottom of the bottom plate. The present invention can not only detect the temperature of the transformer, but also cut off the power to the transformer when the temperature of the transformer is higher than a set temperature, thereby protecting the transformer. At the same time, a ventilation fan is additionally provided at the bottom of the heat dissipation frame, thereby improving the air circulation in the heat dissipation frame and improving the heat dissipation efficiency of the transformer body.
Owner:ECONOMIC & TECH RES INST OF STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD

Variable load super capacity dry type transformer

The application discloses a variable-load super-large capacity dry-type transformer, relates to the related technical field of dry-type transformers, and comprises three groups of main iron core columns and three groups of auxiliary iron core columns, wherein the main iron core column section is provided in a stepped shape, the inside of the main iron core column is stacked by three layers of amorphous alloy strips, the thickness of the middle layer of the three layers of amorphous alloy strips is 1.2-1.5 times that of the two side layers, and the lamination groups in the inside of the auxiliary iron core column are provided with independent lap pieces at the joints. The application realizes uniform magnetic flux density distribution and single-column capacity improvement by combining the stepped section of the three groups of main iron core columns with the magnetic yoke which is thin at the top and thick at the bottom, solves the problems that the single capacity of the traditional dry-type transformer is limited and the whole machine needs to be replaced for capacity expansion, reduces the occupied volume through modular splicing, increases the capacity of a single group of iron core columns, and reduces the no-load loss.
Owner:JIANGSU RYAN ELECTRIC LTD BY SHARE LTD

Lightning impulse protection device for transformer

The utility model provides a lightning impulse protection device for a transformer, and relates to the technical field of lightning arresters, the lightning impulse protection device for the transformer comprises a mounting plate, two ends of the mounting plate are respectively provided with a protection mechanism, the protection mechanism comprises two rectangular blocks, the inner walls of the two rectangular blocks are rotatably connected with a rotating shaft, and the rotating shaft is connected with the mounting plate. A rotating shaft is arranged on the outer side of the screw rod, a coil spring is arranged on one side of the rotating shaft, an L-shaped rod is fixedly connected to the outer surface of the rotating shaft, and a piston block is rotationally connected to one end of the screw rod. The piston block slides on the inner wall of the rectangular groove by rotating the screw rod, so that the airbag sheet deforms and expands outwards, the outer side of the joint of the lightning arrester body and the high-voltage line is wrapped and protected, the influence of rain and sun on the outer side of the joint of the high-voltage line and the lightning arrester body is reduced as much as possible, the service life of the lightning arrester body is prolonged, and the use effect of the lightning arrester body is improved.
Owner:ZHENJIANG DAQO POWER TRANSFORMER CO LTD

Busbar filter

A busbar filter including a core with a through hole, two busbars extending through the through hole, and a first over-molding part formed on the two busbars and between the two busbars and the core, wherein the first over-molding part fills up gaps between the two busbars and a remaining space in the through hole.
Owner:CYNTEC

Superconductor magnet systems and methods for generating magnetic fields

A superconductor magnet system including a superconductor magnet including a plurality of field coils connected in series, each field coil having a plurality of turns including superconductor material. The system also includes a primary electric current source connected across the plurality of the field coils for supplying a DC electric current to the field coils to generate a magnetic field. The system further includes a secondary electric current source connected in parallel with the primary electric current source across a subset of the field coils for supplying an additional DC electric current to the or each field coil in the subset to modify or correct the magnetic field.
Owner:TOKAMAK ENERGY

A nanocrystalline current transformer with DC component resistance and its use method

The present invention discloses a nanocrystalline current transformer with DC component resistance and a method for using the same, comprising: a current transformer having a magnetic core hole extending from front to back in the middle of the front side of the current transformer. The device is provided with a secondary-side disconnection detection and protection mechanism, which effectively prevents the internal magnetic field imbalance of the transformer caused by the disconnection of the secondary circuit, avoids the core magnetic flux saturation and the generation of potential high electromotive force, thereby protecting the transformer itself and peripheral equipment, and reducing the risk of power system failures such as fire or short circuit. At the same time, a live conductor centering fixing mechanism is provided to ensure the stable centering position of the conductor in the transformer core hole, optimize the magnetic field distribution, reduce magnetic leakage, significantly improve the accuracy and stability of current measurement, and reduce measurement fluctuations introduced by conductor shaking, providing more accurate data support for harmonic analysis, fault detection, and power quality monitoring of the power system.
Owner:SHANDONG HUANBANG ELECTRONIC TECH CO LTD

Anti-explosion noise-reduction dry-type transformer based on photovoltaic power generation

The invention relates to the field of dry-type transformers, particularly discloses an explosion-proof noise-reduction dry-type transformer based on photovoltaic power generation, and aims at solving the problems that an existing dry-type transformer is high in requirement for a use environment, high in use cost and poor in explosion-proof noise-reduction performance. The dry-type transformer comprises a base, a dry-type transformer body, a support, a top cover, a corrugated sleeve shell, a first telescopic part, an opening, a cover plate, a sliding frame, a push rod, a first driving assembly, a frame body, a sliding channel opening, a waved plate, a rotating plate and a cooling fan, side frames are arranged at the two ends of the cooling fan, and the lower ends of the side frames are rotationally connected with dry powder nozzles in sliding fit with the waved plate through spring hinges; a second driving assembly is arranged on the frame body and used for driving the cooling fans on the two sides to move, and a damping assembly used for damping the dry-type transformer is further arranged on the base. According to the dry-type transformer, the use of a case can be avoided, the use cost is reduced, and meanwhile, the dry-type transformer has excellent explosion-proof and noise-reduction characteristics.
Owner:ANZHONG POWER TECH CO LTD

An oil-immersed transformer with oil channel cleaning function

This invention discloses an oil-immersed transformer with an oil passage cleaning function, comprising a housing for mounting the core and windings, an oil conservator at the upper end of the housing, an oil pump on the side wall of the housing, a blockage-clearing filter assembly for unblocking and cleaning the oil passages on one side of the housing and the oil conservator, a conduit and a trigger assembly for circulating oil connecting the housing and the oil conservator, and a controller at the upper end of the housing. This invention has a simple structure and reasonable design. Firstly, by controlling the pipe diameter, larger winding insulation impurities cannot leave the oil conservator and housing during normal circulation. Then, by adjusting the transformer oil circulation path, the blocking winding insulation impurities are guided into the oil filter for filtration and removal. This avoids prolonged overload and damage to the oil pump or other circulation equipment, effectively extending the service life of the oil pump and circulation equipment and reducing maintenance costs.
Owner:JIANGSU TONGZE ELECTRIC POWER CONSTRUCTION CO LTD

EMI filtering circuit for ev / HEV battery chargers

An EMI filtering circuit (1) for battery chargers of EV or HEV comprising: a plurality of filters (2a, 2b) for electro-magnetic disturbances connected in cascade to each other and provided with at least one coil (2a) comprising one ferromagnetic core (3) and at least one winding (4a, 4b) provided with one input end (6) and with one output end (7): a plurality of line capacitors (2b); one printed circuit board, PCB, (8) adapted to support the capacitors (2b) and connect them to each other; a plurality of connecting elements (10) adapted to electrically connect the coils (2a) to the PCB (8); wherein each of the output ends (7) of each coil (2a), except for the last one, is directly connected to a respective input end (6) of the next coil (2a) and is associated together with the respective input end (6) to a same connecting element (10).
Owner:META SYSTEM SPA

OLTC topological structure of electronic soft switching technology and driving method

The invention discloses an OLTC topological structure of an electronic soft switching technology and a driving method. In the topological structure, a power supply is connected with a first transformer, the first transformer is connected with a second transformer, and the second transformer is connected with a load; a low-voltage winding of the first transformer is connected with a plurality of taps; the fixed end of the low-voltage winding of the first transformer and each tap are connected with one end of an independent mechanical switch; according to an interval connection mode, the other ends of all the mechanical switches are connected to form two series switch loops, and each series switch loop is connected with an independent electronic change-over switch to form two series circuits; the two electronic change-over switches are connected in parallel, and the second transformer is connected into a series circuit controlled by the two electronic change-over switches respectively. The mechanical switch and the electronic change-over switch are jointly used, so that short-circuit current and surge voltage cannot be generated when the electronic change-over switch performs state switching, and the quality of output voltage waveforms is improved.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

Energy-saving direct current converter transformer

The invention discloses an energy-saving direct-current converter transformer, and particularly relates to the technical field of direct-current converter transformers, and the energy-saving direct-current converter transformer comprises a heat dissipation shell, a controller, a plurality of groups of winding coils, an iron core and a linkage magnetic flux leakage processing assembly, the linkage magnetic flux leakage processing assembly comprises an electric cylinder, a push block, a linkage strip, two inclined grooves, a sleeving column, a guide column, a permalloy outer cover and a connecting strip. Through linkage of the magnetic flux leakage processing assembly, the direct current converter transformer has the advantages that the magnetic flux leakage problem of a large-area area outside the winding coils can be timely processed, the magnetic flux leakage amount can be effectively reduced, the eddy current loss is reduced, the energy loss of the winding coils is remarkably reduced, and the energy-saving performance of the direct current converter transformer is improved; therefore, the problem that the energy-saving performance of the direct-current converter transformer is remarkably reduced due to the fact that the leakage flux in a large-area area is difficult to handle in time and large eddy-current loss is caused by the leakage flux in the transformer is solved.
Owner:SICHUAN DAMENG TIANAN ELECTRIC POWER GROUP CO LTD +1

Evaporative cooling type transformer with partition spraying and temperature control functions

The invention discloses an evaporative cooling type transformer with partition spraying and temperature control functions, and relates to the technical field of cooling of power equipment. The transformer comprises a transformer box body, an iron core, a coil, a cooling pump, a condenser, a first pipeline, a plurality of partition spraying pipelines, an electromagnetic valve, a temperature sensor and an electric control box. The box body is filled with inert cooling gas, the subarea spraying pipelines are respectively arranged in upper, middle and lower cooling areas of a coil and an iron core, an outlet of the cooling pump is connected with the spraying pipelines, and the front ends of the spraying pipelines are provided with electromagnetic valves which can be independently controlled; the temperature sensors are distributed in all areas and used for collecting temperature data in real time, the electric control box controls opening and closing of the corresponding electromagnetic valves according to the temperature conditions of all the areas, and accurate and partitioned cooling control is achieved. The cooling efficiency and the response speed can be remarkably improved, energy waste caused by invalid spraying is avoided, and the system has the advantages of being reasonable in structure, high in intelligent degree, stable in operation and the like and is suitable for heat dissipation management of the high-power transformer under the high-load working condition.
Owner:南宁桂电电子科技研究院有限公司 +1

High-power inverter and control method thereof

The invention discloses a high-power inverter and a control method thereof, and belongs to the technical field of power electronics, the high-power inverter comprises a sensing enhanced magnetic assembly, the sensing enhanced magnetic assembly comprises a high-thermal-conductivity metal shell, a magnetic core arranged in the high-thermal-conductivity metal shell, a main power coil, a high-precision sensing coil and an integrated thermal probe; wherein the high-precision sensing coil is wound by clinging to a central column of the magnetic core, the main power coil is coaxially wound on the outer side of the high-precision sensing coil, and the magnetic core, the main power coil and the high-precision sensing coil jointly form an inductor core body. According to the invention, the controller can monitor the working point of the magnetic core on the magnetization curve in real time, so that the margin of the magnetic core away from the magnetic saturation state is directly judged.
Owner:XIAMEN YIKE ELECTRONICS

Transformer with waterproof function

According to the transformer with the waterproof function applied to the field of transformers, the multiple sealing pieces are arranged, the contact positions of the upper cover and the shell and the contact positions of the lead and the shell are sealed in a multi-stage mode, and the good waterproof effect is achieved; a first annular cavity formed in the outer side of a sealing rubber ring and a second annular cavity formed in the outer side of a first sealing rubber sleeve are matched with an air supply mechanism capable of generating cold and hot air flow to heat and cool a sealing piece, the probability of overheating oxidation and supercooling embrittlement of the sealing piece is reduced, the elastic attenuation condition of the sealing piece is reduced, and the service life of the sealing piece is prolonged. The sealing waterproof effect of the sealing piece is improved, the service life of the sealing piece is prolonged, meanwhile, the sealing piece is heated through the air supply mechanism wrapping the hollow fins and heat generated by the transformer, and energy is saved; in addition, through a moving ring and an electric push rod which are arranged in the barrel, switching between hot air flow and cold air flow is facilitated.
Owner:MAI SHI TENG TECH (SHANDONG) CO LTD

Transformer gas relay protection structure

The utility model discloses a transformer gas relay protection structure, which relates to the technical field of power equipment protection, and comprises an insulation protection sleeve, a first sealing cover plate and a second sealing cover plate, and the insulation protection sleeve is located between the first sealing cover plate and the second sealing cover plate. Mounting holes matched with the first sealing cover plate and the second sealing cover plate are formed in the left end and the right end of the insulating protective sleeve respectively, and the first sealing cover plate and the second sealing cover plate are detachably connected to the mounting holes in the left end and the right end of the insulating protective sleeve respectively, so that a closed cavity used for containing the gas relay is defined; the first sealing cover plate and the second sealing cover plate are each provided with an oil pipe hole and a threading hole, the oil pipe holes are used for allowing oil pipes of the gas relays to penetrate through, and the threading holes are used for allowing secondary wires of the gas relays to penetrate through. The gas relay has a simple structure, is convenient to install, and can effectively prevent rainwater and small animals from entering the gas relay through the integral encapsulation and insulation design, thereby effectively improving the safety of equipment.
Owner:FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID