14 results about "Transformer types" patented technology

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 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 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.

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 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.