18 results about "High voltage transformer" patented technology

1. The name of the design product: high and low voltage pre-installed substation (for shield machine). 2. The use of the design product: a special power distribution cabinet designed for shield machine, which includes high voltage, transformer and low voltage three parts, among which the high voltage includes 12KV / 24KV system and the low voltage includes 400V / 690V system, which can be compatible with TN and low voltage system. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1. 5. The submitted view can clearly express, and the elevation view is omitted.

An electrostatic filter module for an air cleaner includes a housing having an installation space configured to be sealed at least against ingress of liquid. The installation space has a high-voltage connection and a connection for lower voltage. Arranged in the housing are a separation unit and an ionization unit arranged in the housing, and a high-voltage transformer is accommodated in the installation space of the housing.

The application belongs to the technical field of power equipment protection, and provides a multi-parameter active pressure release protection device for an extra-high voltage transformer, which comprises a mechanical release module, a digital monitoring module, a signal processing module and an integrated protection structure, and each module is rigidly connected through a flange; the mechanical release module comprises a mechanical release valve body, an oil injection port, a diaphragm disc, a spring assembly, a junction box and a pressure sensor interface. The application realizes fault early warning through a pressure gradient algorithm, is 0.5s-2s earlier than a traditional mechanical action, avoids deformation or explosion of an oil tank due to sudden pressure rise, improves performance parameters, is suitable for extreme environments, supports digital operation and maintenance, and is more convenient to install.

The application discloses a voltage transformer primary fuse slow-melting identification method based on multi-dimensional transient feature fusion, and comprises the following steps: collecting three-phase voltage signals of a machine terminal voltage transformer and zero sequence voltage signals of a machine terminal open delta voltage transformer; according to a voltage transformer configuration mode, performing slow-melting identification under double voltage transformer configuration or slow-melting identification under single voltage transformer configuration; and comprehensively judging by fusing at least two dimensions of transient features, including a voltage type dimension, a sequence component dimension, a frequency component dimension, a waveform form dimension and a time domain dimension. The application has the characteristics of wide application object, high voltage transformer adaptability, high method reliability, strong criterion anti-interference and strong engineering practicability.

The utility model relates to a high voltage transformer belongs to transformer structure technical field, include: framework, a group of first winding and two groups of second winding, and first winding and second winding are high voltage winding or low voltage winding respectively, framework includes two positioning columns, and both ends of two positioning columns are connected through two flat boards respectively, and positioning column all has through -hole, and through -hole respectively penetrates the flat board of both ends, first winding is wound in two through -holes and the outside of flat board between both ends, second winding is wound on a ring magnet respectively, and ring magnet is respectively set on two positioning columns, and is located between two flat boards, and second winding is interval setting between, positioning column still sets up the magnetic ring on, and the ring magnet on same positioning column and second winding on ring magnet are interval setting between, and framework, first winding, second winding, ring magnet and magnetic ring are filled in an insulator.

The application relates to the field of high-voltage transformers, and discloses a low-noise full-insulation super-high-voltage transformer which comprises a transformer body, first protection structures arranged on the front and back sides of the transformer body, and second protection structures arranged on the left and right sides of the transformer body. The first protection structures and the second protection structures can play a safe protection role at the transformer in the open air, and when it is necessary to maintain parts on the transformer, first protection fences supporting the first protection structures and second protection fences supporting the second protection structures are started, so that maintenance workers can directly stand on the first protection fences and the second protection fences, the maintenance work on the transformer is greatly facilitated, the first protection structures and the second protection structures can not only play a safe protection role, but also can assist the maintenance work of the maintenance workers, the work difficulty is reduced, and the structure is simple and the function is practical.

The application discloses a production process of extra-high voltage transformer oil, through three hydrogenation devices with different pressures, the composition of refined oil products meets the characteristic requirements of naphthenic base oil, and indexes are superior to the GB2536-2011 'Electrical Fluids - Mineral Insulating Oils for Transformers and Switchgear (Special) - Unused' standard, and the production process can also be customized according to special requirements of users on some indexes, so that the extra-high voltage transformer with a voltage of 750KV or above can be operated and used. According to the development trend of clean and environment-friendly products, the high-pressure hydrogenation refining is adopted, and the treatment process of matched precision cutting and online dehydration and degassing is adopted, so that the production process has the advantages of flexible product adjustment, excellent stability, clean and friendly production environment and the like.

This invention belongs to the field of power equipment condition monitoring and fluid non-destructive testing technology, specifically relating to a method and system for ultrasonic detection and dynamic visualization of moving air bubbles in the insulating oil of oil-filled electrical equipment such as ultra-high voltage transformers, using multi-angle dynamic focusing for bubble velocity measurement and positioning. It is applied to bubble detection in the complex oil duct environment of ultra-high voltage transformers. The method performs orthogonal demodulation and filtering on the received signal to extract the low-frequency Doppler component. Then, digital beamforming technology is used to achieve multi-angle dynamic focusing of the bubble echo, and the data is converted from a fast time dimension to a slow time dimension. The Doppler frequency shift is extracted by analyzing the time-frequency characteristics of the signal using short-time Fourier transform. The bubble velocity vector is estimated based on least squares fitting, thereby simultaneously achieving velocity detection and spatial positioning. This invention, with limited data, calculates the vector velocity of the bubble movement based on spatial information from multiple dynamically focused angles and achieves positioning.

The application provides a low-high-high voltage transformer winding structure, which comprises a low-voltage winding, an inner high-voltage winding and an outer high-voltage winding arranged from inside to outside, wherein the inner high-voltage winding and the outer high-voltage winding each comprise an upper branch of the inner high-voltage winding, a lower branch of the inner high-voltage winding, an upper branch of the outer high-voltage winding and a lower branch of the outer high-voltage winding. The high-voltage winding of the transformer is split into the inner high-voltage winding and the outer high-voltage winding, and the outer high-voltage winding and the inner high-voltage winding are each connected in parallel by the upper and lower branches; the upper branch of the inner high-voltage winding is connected with the upper branch of the outer high-voltage winding, and the lower branch of the inner high-voltage winding is connected with the lower branch of the outer high-voltage winding. The low-high-high winding arrangement provided by the application can reduce the winding reactance value or the winding reactance height of the transformer, and meanwhile, the winding material usage is not increased but even reduced.

The utility model discloses a general casing of high voltage transformer cabinet, including the cabinet body, the lower extreme outer surface of cabinet body is provided with the base, the upper extreme outer surface of cabinet body is provided with the top, the front end outer surface of cabinet body is provided with the cabinet door, the inside of cabinet body is provided with adjusting mechanism, adjusting mechanism includes first fixed plate, fixed frame, baffle, mounting bracket, U type sliding block, second fixed plate, pull rod, plug block, first spring, first clamping groove, plugboard, plug groove, second clamping groove, clamping block, guide slot, guide rod, second spring and recess. The utility model discloses a general casing of high voltage transformer cabinet can adjust mounting bracket height according to need and use, is convenient for to the quick location fixed of mounting bracket, easy operation improves the adaptability, can conveniently with the quick installation of cabinet and base, is convenient for according to need to replace the base of adaptation and use, brings better use prospect.

The application discloses a kind of on-line monitoring method and system of gas in extra-high voltage transformer oil, it is related to transformer state monitoring field, comprising: obtaining the multi-point concentration data of dissolved gas in transformer oil, and removing abnormal data by autocorrelation coefficient analysis;Wavelet decomposition is carried out to effective concentration data to obtain time-frequency characteristics, and the evolution stage of defect is judged based on the phase difference value between gas components;The electric field intensity data of the tap position of transformer winding are collected, and the spatial position of defect is determined by combining concentration gradient analysis;The oil particle content and temperature distribution of target area are collected to establish the adsorption characteristic curve, and the gas generation amount at defect is obtained by compensation calculation;Each characteristic data is input into fault diagnosis rule base to generate diagnosis result.The application improves the reliability of monitoring data by multi-dimensional information fusion, and realizes the accurate positioning of defect position.

The application discloses a high-strength copper alloy for power grid and a preparation method thereof. The copper alloy contains Ti, Si and Cu, wherein the weight percentage of Ti is 0.4%-1.0%, the weight percentage of Si is 0.14%-0.35%, the atomic ratio of Ti and Si is 5:3, and the balance is copper; the copper alloy is composed of a copper matrix and a Ti5Si3 precipitated phase, and the Ti5Si3 precipitated phase is spherical particles with a diameter of 10-50 nm. The strength and electrical conductivity of the Cu-Ti-Si alloy prepared by the application are not inferior to those of a Cu-Ni-Si series alloy, but the raw material cost is lower, and the application of the Cu-Ti-Si alloy in a high-voltage transformer sleeve clamp is facilitated. The alloy preparation process of the application is simple, and does not need complex processes such as solid solution, hot rolling, drawing and the like.

The application discloses a magnetron detection circuit and a magnetron detection equipment applying the same, and relates to the technical field of magnetron detection equipment.The circuit comprises a voltage stabilizer T1, a first voltage regulator T2, a second voltage regulator T3, an isolation transformer T4, a high-voltage transformer T5, a rectifier DQ1, a resistance adjustment group, a third voltage regulator T6 and a filament transformer T7.The first voltage regulator and the second voltage regulator are arranged in the front stage of the high-voltage transformer to respectively perform voltage coarse adjustment and fine adjustment, the resistance adjustment group is arranged in the rear stage of the high-voltage transformer to perform internal resistance adjustment, and the high-voltage end of a high-pass filter is connected to a common connection point of the filament transformer and the magnetron, so that the magnetron anode current is quickly, accurately and distortionlessly adjusted.The application overcomes the problems of experience-dependent manual adjustment, slow adjustment speed and waveform distortion caused by triode adjustment, and significantly improves the accuracy and repeatability of magnetron performance detection.

This application discloses a grounding wire device for ultra-high voltage (UHV) substations suitable for drone-mounted connection, belonging to the field of UHV substation operation and maintenance safety technology. It addresses the high risk and insufficient reliability of existing grounding wire connection operations. The device includes a hanging ring, a connection mechanism, and a fixing mechanism: the hanging ring is adapted for drone mounting; the fixing mechanism uses an inverted trapezoidal V-shaped convergent structure to achieve self-guiding alignment during connection; after connection, a pre-tightening structure automatically forms a self-locking mechanism, further ensuring electrical contact performance with elastic contact fingers. This device eliminates the need for manual climbing, achieves a connection success rate of over 99%, resists wind-induced loosening, meets the high-current discharge requirements of UHV substations, is compatible with various types of connection points, significantly improves the safety and efficiency of grounding operations, and is suitable for various UHV substation outage maintenance grounding scenarios.

The present application relates to the technical field of power equipment state detection and fault diagnosis, and discloses a method and system for detecting defects of an extra-high voltage transformer insulation sleeve, the method comprising a thermal imaging sequence, obtaining a thermal defect morphology sequence through registration, filtering and histogram equalization; extracting thermal spot contours, area growth rate, irregularity, center offset and temperature gradient, and constructing an evolution vector; outputting a defect stage label through CNN; for the initial stage, predicting the deterioration probability using LSTM; if the threshold is exceeded, generating a full life cycle curve by fusing historical records; obtaining path groups through clustering, determining the maintenance time point in combination with the power outage window, and generating dynamic instructions containing priority, spare parts list and inspection path. The present application realizes intelligent closed-loop decision-making from early defect perception, risk prediction to automatic optimization of maintenance strategy.

This invention relates to a window-type bushing connection structure for ultra-high voltage transformers. The bushing riser has an upper outlet device inside and an equalizing ball assembly at its lower end. The lower end of the bushing is inserted into the bushing riser and passes through the upper outlet device. The upper outlet device includes multiple layers of cardboard tubes, with a first window on one side and a rotatable cardboard ring on the outside. A second window is located on one side of the cardboard ring, and the second window rotates to coincide with the corresponding first window. The support assembly of the upper outlet device includes interlocking support bars and supporting support bars arranged staggered from the inside out, with cardboard tubes between adjacent interlocking and supporting support bars. The inner sides of the interlocking and supporting support bars are grooved in the cardboard ring, and the lower end of the cardboard ring has a limiting slot that fits into the lower wall of the corresponding cardboard ring groove. This invention exposes the observation and operation window of the upper outlet device by rotating the cardboard ring, without affecting the safety margin and ensuring wiring quality.