22 results about "Transformer types" patented technology

The invention provides an extra-high voltage transformer temperature field rapid calculation method, which comprises the steps of determining an input characteristic quantity according to a flow thermal coupling principle and a transformer type, establishing a simulation model, solving an equation set by utilizing a finite volume method to obtain an output characteristic quantity, carrying out normalization processing on the output characteristic quantity, forming a sample set through point cloud processing, and calculating the temperature field of an extra-high voltage transformer. The method comprises the following steps: randomly dividing into a training set and a test set, constructing a U-net + + neural network, taking a mean square error as a loss function, carrying out grouping test on key hyper-parameters, determining an optimal combination, inputting the constructed training set into the U-net + + neural network for iterative training, and carrying out supervised learning by taking an output characteristic quantity as label data. And when the calculation precision meets the requirement, obtaining an optimal model, and carrying out validity verification on the optimal model by utilizing a new working condition in the test set. According to the method, the calculation efficiency is improved, equipment can be protected from interference, and the safety and reliability of data are ensured.

The low-frequency electromagnetic wave has the characteristics of high penetrability and low signal attenuation, and can be widely applied to the fields of underground communication, underwater communication and the like. Most existing low-frequency transmitting antennas are electrically small antennas, have the problems of large size, complex equipment, short transmission distance and the like, and are difficult to meet actual requirements. The invention relates to a high-power pulse low-frequency antenna based on a Tesla coil. The high-power pulse low-frequency antenna is a high-power pulse transmitting antenna composed of a solid-state double-resonance Tesla circuit, a transformer, a primary coil and a secondary coil. The antenna adopts a high-voltage pulse generated by a Tesla circuit for feeding, and meanwhile, a transformer type impedance matching network is combined, so that the feed power is maximized. The radiation coil selects a primary and secondary nested coupling structure, the working frequency is accurately adjusted to be the output frequency of the Tesla circuit by respectively connecting resonant capacitors in series to the primary and secondary coils, and effective amplification of radiation signals is realized based on a magnetic coupling effect. The size of the coil is in the sub-cubic meter level and is within one thousandth of the working wavelength. Aiming at the antenna design difficulty in long-wave communication, the antenna has the advantages of high input power, long-distance transmission and small physical size, and has potential application value in the fields of cross-medium communication, emergency management communication and the like.

This invention relates to a power compensation method and system based on transformer power loss, and a computer program product, belonging to the field of power compensation technology. It determines the target power loss increment compensation coefficient of the target transformer in the power station to be compensated from a pre-constructed correspondence between transformer type and power loss increment compensation coefficient. Based on the target loss increment compensation coefficient, the output power and voltage of the high-voltage side of the target transformer, a power compensation amount for compensating the power loss of the power station is obtained. The sum of the current generating power and the power compensation amount is used as the amount of generating power to be adjusted in the power station. This invention, from a principle perspective, analyzes that the real source of power loss in the power station is the transformer, using the transformer as a breakthrough point to construct a correspondence between transformer type and power loss increment compensation coefficient, thereby realizing a power compensation method that meets the needs of various operating conditions or power stations.

The application discloses a transformer adaptive closing method and device, equipment and storage medium, and relates to the technical field of transformer control. The method comprises the following steps: obtaining a winding transient voltage signal in a tripping process of a target transformer, performing numerical integration on the winding transient voltage signal, and obtaining an initial residual magnetism value of the target transformer; obtaining a core leakage flux signal of the target transformer, performing complementary calibration on the initial residual magnetism value based on the core leakage flux signal, and obtaining a dynamic residual magnetism value of the target transformer; determining a target closing time based on the dynamic residual magnetism value of the target transformer, the type of the target transformer and the type of a circuit breaker corresponding to the target transformer; and controlling the circuit breaker to close the target transformer at the target closing time. Through the above method, accurate dynamic measurement of residual magnetism is realized, the ideal closing time with the minimum core residual magnetism and post-closing magnetic flux deviation is adaptively determined according to different transformer types and circuit breaker characteristics, and the magnetic field current surge is effectively inhibited.

The application relates to the technical field of hub axle pipe detection, in particular to a device for detecting the torque rigidity of an automobile hub axle pipe unit, which comprises a mounting seat, a supporting mechanism is fixedly installed at the top of the mounting seat, a hub axle pipe unit is placed at the top end of the supporting mechanism, a positioning mechanism is installed on the outer edge of the hub axle pipe unit so as to fix the positioning mechanism on the supporting mechanism, an axial test mechanism is installed at one end of the top of the hub axle pipe unit so as to detect the axial torque rigidity value of the hub axle pipe unit, a radial test structure is installed at the other end of the top of the hub axle pipe unit so as to detect the radial torque rigidity value of the hub axle pipe unit, and a differential transformer type displacement sensor is fixedly installed at the top of the hub axle pipe unit so as to detect the inclination of the hub axle pipe unit. The application can keep the bottom of the hub axle pipe unit stable, and thus can ensure the normal detection.

The application provides a PCB transformer, a design method, a DC / DC converter and a power module, wherein the design method comprises the following steps: determining the single-turn winding width based on the window size of a magnetic core; determining the branch winding width based on the transformer center frequency and the winding material parameters, and determining the single-turn branch number based on the single-turn winding width and the branch winding width; determining the number of single-turn branch windings of the primary side and the secondary side based on the transformer type and the single-turn branch number to determine the transverse stagger mode, and determining the longitudinal stagger mode based on the turn difference of the primary side and the secondary side; designing the branch windings of the primary side and the secondary side in parallel based on the number of single-turn branch windings of the primary side and the secondary side, and stagger designing each single-turn winding of the primary side and the secondary side based on the transverse and longitudinal stagger modes to obtain a PCB winding plate. The application solves the problems of the existing single-turn copper PCB transformer, such as being greatly affected by the skin effect and the proximity effect, and having large parasitic capacitance and leakage inductance of the primary side and the secondary side.

The invention relates to the technical field of anti-interference, in particular to a six-dimensional anti-interference system for an electromagnetic transformer type test, which comprises a six-dimensional data acquisition module for acquiring six-dimensional data of an electromagnetic transformer at the current moment in the type test, and an edge node module for predicting the six-dimensional data of the electromagnetic transformer based on a preset prediction model, the abnormal probability corresponding to the six-dimensional data at the next moment is predicted, and the PLC control module outputs a control instruction according to the instruction signal; and the execution module executes a corresponding anti-interference action according to the control instruction. Real-time monitoring of multi-source interference is achieved through collection of the six-dimensional data collection module, the abnormal probability is predicted at the edge node module, and lagging response of a traditional scheme is avoided. And the PLC control module is combined to quickly control and be linked with the execution module, so that a monitoring-prediction-execution closed-loop mechanism is formed, anti-interference action can be completed at millisecond level, and the anti-interference capability of the electromagnetic transformer type test and the accuracy and reliability of test data are effectively improved.

The application provides an intelligent interface matrix for power transformer integrated test, aiming at simplifying the complicated wiring operation in the traditional test and improving the automation level and work efficiency of the power transformer test wiring. The intelligent interface matrix is composed of an intelligent control module, a test interface unit and a sensing and monitoring module, supports the wiring task of completing the conventional test of the current transformer dielectric loss, excitation characteristic, loop resistance, primary and secondary direct resistance and the voltage transformer ratio, dielectric loss, insulation resistance and the like, after being connected with the power transformer, the intelligent interface matrix automatically identifies the power transformer type by monitoring the voltage, current and other signals in the test in real time, switches the multiple adjustable test interface units stably and safely according to the predetermined test sequence of different types of transformers in the high-voltage and large-current environment, efficiently and quickly completes all test wiring work, significantly reduces the manual intervention, and effectively improves the test safety, reliability and overall work efficiency.

The utility model discloses a kind of temperature drift test fixtures for linear differential transformer type displacement sensor, shell pedestal and vertical fixed plate are respectively fixedly installed on the top of bottom plate, pull rod pedestal is placed on the top of bottom plate and between shell pedestal and vertical fixed plate, shell connecting device is located on the upper portion of shell pedestal, pull rod connecting device is located on the upper portion of the pull rod pedestal, the both ends of transverse guide rod are connected with shell pedestal and vertical fixed plate respectively, and middle section passes through the corresponding through-hole on the pull rod pedestal, the screw rod of first transverse adjusting bolt mounted on vertical fixed plate and the screw rod of second transverse adjusting bolt mounted on shell pedestal are respectively contacted with the both sides of pull rod pedestal.The utility model is convenient for accurately adjusting the relative position between pull rod and shell, to realize the function of shell positioning and pull rod movement control, and the concentricity between pull rod and shell can be guaranteed, so it can be used to test the temperature drift of specified position point.

The invention discloses a high-precision double-spring water level sensor, and relates to the technical field of water level sensors. The device comprises a right shell and a left shell, a right cavity and a through hole are formed in the right shell, a transmission cavity is formed in the inner bottom of the through hole, and a differential transformer type displacement sensor is installed in the transmission cavity; a left cavity is formed in the left shell, and detection elastic pieces are arranged at the left end of the left cavity and the right end of the right cavity. The water level is sensed through the detection elastic piece, the higher the water level is, the larger the pressure is, silicone oil serves as an incompressible transmission medium, the unique function is accurate pressure transmission, and external water pressure change is faithfully transmitted to the piston without lag but does not participate in electric signal conversion. The differential transformer type displacement sensor and an execution part are physically isolated, a link elastic sheet pressure sensing link easy to drift and a detection link of the high-stability differential transformer type displacement sensor are decoupled, and the measurement precision is improved.

The invention discloses a parameter identification method, device and system for a high-frequency cascade transformer, and belongs to the technical field of transformer parameter identification. The excitation resistance and the excitation inductance of the transformer are obtained through transformer transient waveform identification during CTMI no-load test; meanwhile, after the fundamental component effective value of the CTMI output voltage under the to-be-identified working frequency is obtained through calculation based on the amplitude-frequency characteristic of the CTMI on-load test, the difference loss between the fundamental component effective value and the fundamental component effective value of the CTMI output voltage under the to-be-identified working frequency obtained through the CTMI on-load test is minimized, so that the CTMI output voltage can be identified. And identifying to obtain the primary side winding resistance, the primary side winding leakage inductance, the secondary side winding resistance and the secondary side winding leakage inductance of the transformer under the working frequency to be identified. The method is suitable for a square wave condition, does not depend on the type of the transformer, and can accurately and effectively realize parameter identification of the high-frequency cascade transformer.

The invention provides a method and a device for identifying a distribution transformer machine based on machine vision, and belongs to the field of power monitoring. The method comprises the following steps: acquiring an installation two-dimensional code of a to-be-installed transformer; wherein the installation two-dimensional code is arranged on a transformer to be installed, and construction requirements of all sub-items are set in the installation two-dimensional code; determining a construction sequence of each subitem and construction qualification requirements of constructors of each subitem based on each subitem in the installation two-dimensional code; wherein identity information of all constructors in a construction team of a transformer to be installed is set in the terminal; when an instruction issued by the terminal for executing the Nth subitem is received, obtaining a video during construction of the Nth subitem, and sending the video during construction of the Nth subitem to the edge end; wherein the edge end is provided with a standard identification model which is used for identifying a received video; and determining whether to execute the (N + 1) th subitem or not based on the received instruction of the edge end. According to the invention, all sub-items of transformer installation can be accurately identified.

The invention provides an energy storage black-start power source system and method for a power plant, and belongs to the field of thermal power generation, the energy storage black-start power source system comprises an energy storage black-start power source body, and the power output end of the energy storage black-start power source body is connected with the power input ends of a first station auxiliary machine, a second station auxiliary machine, a first station 6kV bus and a second station 6kV bus; the power supply output end of the first station service 6kV bus is connected with a first station service auxiliary machine and a first energy storage system, and the power supply output end of the second station service 6kV bus is connected with the power supply input end of a second station service auxiliary machine and a second energy storage system; compared with a traditional mode that a diesel generator or an energy storage device is directly connected to a 6kV auxiliary power bus for direct starting, the method has the advantages that the excitation surge current of a large-capacity transformer type auxiliary machine is eliminated, meanwhile, the impact current in the electrical starting process of a fan and a water pump type auxiliary machine is reduced, and the safety and the reliability of the black-start process are greatly improved; and meanwhile, the energy storage capacity needing to be configured is effectively reduced, the initial investment cost is reduced, and the overall economical efficiency is improved.

This application discloses a method, apparatus, equipment, and medium for assessing the cumulative damage to transformer coil turn insulation strength, relating to the technical field of insulation degradation analysis. This application establishes a database of the correspondence between the compressive stress of transformer coil turn insulation and the number of damaged insulation paper layers based on a preset experimental model. The preset experimental model includes experimental models between conductors and between conductors and pads. The compressive stress of each coil coil section is calculated based on the transformer type when subjected to a short-circuit fault current impact. The database of the correspondence between the compressive stress of the transformer coil turn insulation and the number of damaged insulation paper layers is queried based on the compressive stress to obtain the cumulative total number of damaged insulation layers for each coil section. The cumulative damage state of the transformer coil turn insulation is assessed based on the cumulative total number of damaged insulation layers, achieving early warning and predictive defense against latent faults in transformer coil turn insulation, solving the problem of difficulty in early detection of inter-turn short circuits, and improving the reliability and safety of transformer operation.

To provide an abnormality detection system for a differential transformer displacement meter that can detect abnormalities with higher accuracy, a differential transformer displacement meter, and an abnormality detection method.SOLUTION: An abnormality detection system for a differential transformer displacement meter 22 in which the output voltage output from a secondary winding 25 changes in accordance with the AC input voltage depending on the position of a movable iron core 26 includes an acquisition unit that acquires the voltage value of the output voltage at the timing of a predetermined phase of the input voltage, and a determination unit that performs an abnormality determination on the basis of a voltage difference between a voltage value obtained corresponding to a target period and a voltage value acquired corresponding to a period before the target period.SELECTED DRAWING: Figure 4

The invention discloses a high-capacity new energy transformer body assembling method and a high-capacity new energy transformer. The high-capacity new energy transformer body assembling method comprises the steps that firstly, a low-voltage coil with head and tail copper bar ends is formed through winding of a copper foil layer type structure; during assembly, the high-voltage coil is heightened, the low-voltage coil is lifted through a first lifting appliance, the low-voltage coil is placed into the high-voltage coil from the end, away from the head and tail copper bar outlet heads, of the low-voltage coil, then the first lifting appliance is removed, and the high-voltage coil is formed by winding the insulating part between the high-voltage coil and the low-voltage coil in a continuous structure. And the low-voltage coil and the high-voltage coil are lifted by the second lifting appliance and are synchronously sleeved on the iron core column, so that the body assembly of the 66Kv high-capacity transformer is realized, the transformer type formed by the low-voltage coil with a copper foil layer structure and the high-voltage coil with a continuous structure is provided, and the manufacturing cost of the transformer is reduced.

The invention discloses a concentric magnetic integrated transformer type controllable reactor additionally provided with symmetrical magnetic leakage iron cores, and belongs to the technical field of reactors. The reactor comprises a magnetic integrated iron core, a winding and a silicon controlled rectifier module, the magnetic integrated iron core is of a two-window structure, the upper side and the lower side of each window are symmetrically provided with a leakage magnetic iron core set, the whole magnetic integrated iron core is internally provided with four leakage magnetic iron core sets, and each leakage magnetic iron core set is composed of a plurality of leakage magnetic iron cores arranged along the window. The leakage magnetic iron cores located on the same layer in the four leakage magnetic iron core sets bear a winding together, the winding on the innermost layer is wound on the main iron core column, and the winding is electrically connected with the silicon controlled rectifier module. According to the structure, the high magnetic leakage impedance provided by the magnetic integrated iron core is used for equivalently replacing discrete reactors connected in series with branches, meanwhile, the original electrical isolation capacity of the multi-winding transformer is kept, the overall structure of the system is remarkably simplified, and the manufacturing cost and the operation loss are effectively reduced.

The invention discloses a main transformer loop checking method and system, and belongs to the technical field of intelligent substation configuration checking.The method comprises the steps that firstly, a main transformer full virtual loop template is established, then an SCD file is analyzed, actual virtual connection information of main transformer protection is extracted, and virtual terminal description and sender equipment attributes are analyzed; intelligently identifying the connection type of the main transformer loop and identifying the connection type with a feature code; and finally, based on the identified connection type, dynamically adapting verification logic, accurately comparing the actual connection with the template, and outputting a verification result. The system comprises a template management module, a configuration analysis module, a type identification module and a check engine module to cooperatively realize the process. According to the method, the problems of high checking false alarm rate and poor accuracy caused by various main transformer types and configuration modes are effectively solved, and the checking automation level and the result reliability are remarkably improved.

The invention relates to a transformer full-life type selection method in a new energy delivery environment, and relates to the technical field of transformer type selection. According to the application, the outgoing new energy power generation transformer is taken as a research object, the outgoing new energy output characteristics are aimed at, the whole life cycle cost idea of the transformer is based on the transformer electric-thermal coupling relationship, key meteorological elements are obtained by using the meteorological environment big data technology, and the operation temperature of the transformer in the designed life cycle is simulated; and introducing a life loss constraint, and seeking the optimal transformer capacity meeting the life loss constraint by taking the minimum life cycle cost of the transformer as a target. According to the method, the construction cost data of the current transformer is combined, and the new energy output characteristics and the change characteristics of the meteorological environment are fully considered in the operation temperature simulation process of the transformer, so that the problems existing in a traditional transformer capacity selection method are effectively solved.

The utility model belongs to the technology of LVDT (Linear Variable Differential Transformer), and relates to an iron core assembly structure of a linear differential transformer type displacement sensor. The iron core assembly comprises a connecting rod (1) and a mover iron core (2), the connecting rod (1) of the iron core assembly is of a stepped cylinder structure, and the mover iron core (2) is of a cylindrical sleeve structure. The connecting rod (1) and the rotor iron core (2) are installed in a sleeved mode, a side face seam and a bottom face seam are welded and fixed in a laser welding mode, the effect that the rotor iron core (2) affects a magnetic field in a stator assembly is guaranteed, and meanwhile the connecting strength of the rotor iron core (2) is guaranteed through the two welding seams. The risk that the relatively long iron core assembly is broken from the welding position is avoided, the reliability of the product is improved, and the iron core assembly is more suitable for aviation equipment products.

The utility model belongs to the technical field of power electronics, and particularly relates to a high-density outdoor box transformer type high-voltage dynamic reactive compensation generating device, which comprises a box body, a power chamber, a charging chamber, a control chamber, an operation chamber and a base assembly, the base assembly is positioned at the bottom of the box body, the left side of the base assembly is the power chamber, and the right side of the base assembly is divided into a front part and a rear part, the control room and the operation room are arranged side by side; the top of the box body is of a herringbone structure. The cabinet has the advantages that the cabinet body is reasonable in layout, devices are arranged in corresponding areas according to functions, high-density arrangement is achieved, the internal space utilization rate is higher, and the cabinet can be compatible with an isolating switch and an iron core reactor at the same time. The box body can be processed by adopting a sheet metal process, the manufacturing period is shorter, and the cost is lower. And the top adopts a herringbone structure, so that water can be effectively drained, and shell corrosion damage caused by accumulated water is avoided.

The present application relates to a kind of non-destructive test method for measuring stray capacitance of transformer type equipment, belong to the field of transformer type equipment parameter measurement and accurate modeling.The method comprises: S1: the multi-winding transformer is abstracted as the parallel circuit composed of stray capacitance C, loss resistance R and static magnetic hysteresis L;S2: connecting variable frequency power supply to the arbitrary port of transformer, and carrying out two groups of tests: in the first group of experiments, the power supply voltage is set as u s1 , effective value is U s1 , frequency is f s1 ;In the second group of experiments, the power supply voltage is set as u s2 , effective value is U s2 , frequency is f s2 ;S3: the time axis of all signals in the second group of experiments is scaled, so that its frequency f s2 It is artificially processed as f s1 ;S4: according to parallel circuit principle, the accurate value of transformer type equipment stray capacitance C is calculated.The present application realizes accurate measurement to transformer type equipment stray capacitance through simple, non-destructive port test.