49 results about "Traction transformer" patented technology

The application discloses a traction transformer control cabinet and a rail train, and relates to the technical field of rail transit vehicles.The traction transformer control cabinet comprises a detachable shell and a control module arranged in the detachable shell; wherein the control module is used for determining the fan frequency of the fan in the cooling system of the traction transformer according to the first collection data sent by the whole vehicle controller of the rail train and the second collection data sent by the traction transformer, so as to utilize the fan frequency to perform frequency conversion control on the fan; the first collection signal comprises vehicle speed data, and the second collection signal comprises oil temperature data; through the arrangement of the traction transformer control cabinet, the control module in the traction transformer control cabinet performs frequency conversion control on the cooling fan according to the data such as the vehicle speed of the train and the oil temperature of the traction transformer, the low noise and the intelligentization of the traction transformer are realized, the noise of the rail train can be effectively reduced, and the passenger comfort is improved.

The train control system comprises a traction transformer located outside a train and a traction converter located inside the train, the traction converter comprises a first contactor and a power module, the traction transformer is connected with one end of a first connecting piece through a cable, the other end of the first connecting piece is connected with an input end of the first contactor, the first contactor is connected with the bottom of the traction converter through a movable mounting plate, an output end of the first contactor is connected with one end of a second connecting piece, and the other end of the second connecting piece is connected with the power module. The technical scheme of the embodiment of the application effectively promotes the reasonable layout of the overall structure of the traction converter, flexibly adapts to the change of customer demand, and quickly responds to the market customer demand.

The application provides a transformer hoisting traction device, which comprises a main box, a climbing assembly installed on the side of the main box, the climbing assembly clamped on the left and right sides of an electric pole, the climbing assembly used to drive the main box to lift to complete automatic hoisting of the transformer and automatic separation of the main box, a lower clamping assembly, a reserved bracket clamped and installed on the outer wall of the electric pole, the reserved bracket arranged above the main box, a suspension assembly comprising a first lifting frame, a second lifting frame, a wire wheel and an end plate, a lifting assembly, an outer clamping assembly, a rotating assembly and an outer blocking assembly. The application can automatically drive the reserved bracket and the transformer body to lift, complete butt joint of the transformer body and the reserved bracket, and does not need manual high-altitude traction, so that the transformer laying safety is higher, and the operation stability and efficiency are also higher.

This invention relates to a long-distance power supply system and method for a coal mining machine. The system includes a mobile substation, a remote switch control device, a main cable, and a coal mining machine connected in sequence. The remote switch control device includes a frequency converter and first to fourth switches. The coal mining machine includes left and right cutting motors and a third contactor, a traction transformer, a control transformer, a UPS power supply, and a coal mining machine control system connected in sequence. The left and right cutting motors are respectively connected to the upstream line of the third contactor via the first and second contactors. The method includes first turning on the UPS power supply to power on the coal mining machine control system, pressing the start buttons of the left and right cutting motors to engage the first and second contactors, pressing the main start button to close the first, second, and third remote switches in sequence, soft-starting the left and right cutting motors, closing the fourth switch, opening the third switch, and closing the third contactor. This invention enables long-distance power supply to the coal mining machine while ensuring the normal start-up of the cutting motors.

The utility model discloses a traction transformer differential protection device, which relates to the technical field of electrified railway transformer protection and comprises a first trigger circuit for triggering a first magnetizing inrush current blocking signal, a second trigger circuit for triggering a second magnetizing inrush current blocking signal and a third trigger circuit for triggering an empty charging state signal of a transformer. The fourth trigger circuit triggers a differential current waveform asymmetrical signal, the AND logic device I performs AND logic processing on a second magnetizing inrush current blocking signal, a transformer empty charging state signal and the differential current waveform asymmetrical signal, and the OR logic device I performs OR logic processing on an output result of the AND logic device I and a first magnetizing inrush current blocking signal. And triggering an excitation inrush current blocking signal according to an output result of the OR logic device 1. By adding a criterion of magnetizing inrush current locking, protection maloperation caused by magnetizing inrush current in the air-drop process of the traction transformer can be effectively avoided.

The application relates to the field of rail transit and electricity and discloses a traction transformer assembly, which comprises a support assembly, a traction transformer body, a cooler and a pipeline assembly; the support assembly comprises a pair of longitudinal beams and a pair of cross beams vertically connected between the pair of longitudinal beams; the traction transformer body is suspendedly connected between the pair of cross beams; the cooler is connected to one side of the traction transformer body; and the pipeline assembly is connected between the traction transformer body and the cooler and is used for driving the circulation of cooling oil in the traction transformer body and the cooler. The traction transformer assembly provided by the application is convenient to install and maintain, safe and reliable to operate and simple in arrangement.

The application discloses a port isolation type in-phase power supply system based on MMC and a control method thereof, which comprises a three-phase high-voltage DC bus at a power grid side, a traction Scott transformer for traction of an electric locomotive, a three-phase MMC-STATCOM reactive power compensation device, and a matching Scott transformer for connecting the traction Scott transformer and the three-phase MMC-STATCOM reactive power compensation device; the primary side of the traction Scott transformer is connected with the three-phase high-voltage DC bus, and the secondary side is connected with the corresponding secondary side of the matching Scott transformer; the primary side of the matching Scott transformer is connected with the three-phase MMC-STATCOM reactive power compensation device; the alpha phase and the beta phase of the secondary side of the traction Scott transformer are connected in series and connected to a traction bus to supply power to the electric locomotive. The system can not only realize three-end isolation of the power grid system, the traction system and the compensation system and ensure safety, but also form a three-phase symmetrical voltage with the same phase as the power grid voltage at the alternating current side of the three-phase MMC-STATCOM reactive power compensation device, and has a small capacity.

The present application relates to a kind of compact railway energy regulation complex and its control method, including the converter unit with the core of medium-frequency transformer, the magnetic field of medium-frequency transformer is to the decoupling inductance of collision and filter capacitor and is constituted the second harmonic filter branch of converter unit DC side, filter each converter unit DC side in single-phase conversion system The second harmonic component is removed.Compact railway energy regulation complex uses double-phase shift control and passive control etc.Control method, can accurately control the power flow distribution of two power supply arms and realize traction transformer primary side three-phase current balance control, and using the linear quadratic regulator LQRI control method based on band integration is carried out energy comprehensive regulation, can effectively suppress the voltage fluctuation of feeder side, improve the comprehensive energy utilization rate and new energy consumption rate of electric railway system.Because of the existence of medium-frequency transformer, compared with the electric energy regulation device with the basic topology of traditional railway power regulator, compact railway energy regulation complex has higher integration.

The invention discloses a rail transit traction power supply system locomotive combination condition identification method and system, and the method comprises the steps: carrying out the dimension reduction processing of first power quality monitoring data of a power supply arm through employing a principal component analysis algorithm, and enabling the features after dimension reduction to retain the main energy and change trend in original data; noise and redundancy characteristics can be effectively suppressed, and a Gaussian mixture model clustering algorithm introducing a time sequence continuity constraint is used for clustering the dimension-reduced first electric energy quality monitoring data, so that the problem of insufficient self-adaptability caused by dependence on fixed power or current threshold division in a traditional method is solved; performing feature extraction on second power quality monitoring data of the power supply side of the traction transformer by using a feature extraction method based on a sliding time window to ensure a better model training effect, and training an extreme gradient boosting tree classification model by using a combined working condition label and a feature vector; therefore, the working condition of the locomotive of the rail transit traction power supply system can be accurately identified in a non-intrusive manner.

The embodiment of the invention provides a load flow calculation method and system for an alternating-current in-phase traction power supply system, and belongs to the technical field of rail transit power supply. The method comprises the following steps: establishing a traction substation equivalent circuit model based on a compensation current of a cophase power supply device and an electrical quantity constraint relation of a traction transformer; combining the node voltage model of the traction substation with the node admittance relationship of the chain circuit, and performing regularization processing to obtain a regularized load flow calculation model; establishing a mapping relation of compensation current of the in-phase power supply device, and coupling external power supply parameters into the mapping relation to obtain to-be-updated compensation current; and in the iteration process, the compensation current and the injection current of each node are updated according to the node voltage until the convergence condition is met, and then a load flow calculation result is output. According to the scheme, the problem of efficient solving of load flow calculation of the traction power supply system containing the in-phase power supply device is effectively solved, and the method can be applied to capacity configuration and operation optimization design of the in-phase power supply device in different operation scenes.

The application discloses a kind of electrified railway through type same phase power supply system structure, including same phase power supply device CPD, traction secondary bus, single-phase voltage source converter and single-phase transformer;Traction secondary bus is connected in traction port of traction transformer secondary side by circuit breaker;The DC side of single-phase voltage source converter is connected with the DC link of same phase power supply device CPD, and the AC side is connected with single-phase transformer, and the other side of single-phase transformer is connected between traction secondary bus and traction bus;The amplitude and phase of traction bus voltage are adjusted by adjusting the AC side voltage of single-phase voltage source converter;Traction bus voltage uses voltage phase-active power and voltage amplitude-reactive power droop control.Can realize the through type same phase power supply of traction network, reduce or eliminate crossing power, improve the regenerative energy utilization rate of traction power supply system, with less investment, higher reliability.

The application discloses a precision punching device for a traction transformer adjusting link, and relates to the technical field of adjusting link installation devices, and specifically relates to a precision punching device for a traction transformer adjusting link. The adjusting link installation device comprises double-track sliding rails fixed on a workbench, sliding blocks I and II, clamps I and II, and a clamp tool. The clamp tool comprises a support plate, a multi-line flange support plate, a flange front baffle plate, and two flange rear baffle plates. The multi-line flange support plate corresponds to the clamps I and II, and the flange is arranged on the multi-line flange support plate, so that the adjusting link is located in the clamps I and II. A punching mechanism is fixed on a fixed seat of the sliding block I, and comprises a base and an L-shaped drill bit support frame. A downward drill bit is fixed at one end of the L-shaped drill bit support frame, and the drill bit is opposite to the position to be punched on the adjusting link during punching. A calibration mechanism comprises a calibration support frame and a calibrator, and the calibrator is aligned with the drill bit during punching. The application can adapt to punching of adjusting links with different lengths, avoid punching position deviation, and can also measure punching errors in real time and then control precise punching.

The embodiment of the invention provides a load flow calculation method and system for a traction power supply system comprising a railway power regulator, and belongs to the technical field of rail transit power supply. The method comprises the following steps: constructing a traction substation node voltage model based on a compensation current of a railway power regulator and an electrical quantity constraint relation of a traction transformer, and constructing a unified power transmission line, feeder line and traction network chain circuit model; forming a load flow calculation unified iteration model for the alternating current traction power supply system, and determining feeder current; and updating the compensation current of the railway power regulator, and substituting the updated compensation current into the unified iteration model to execute power flow solution so as to output a power flow calculation result of the AC traction power supply system containing the railway power regulator. The method solves the problem of efficient solving of load flow calculation of the traction power supply system comprising the railway power regulator, and can be used for capacity configuration and operation optimization of the railway power regulator in different operation scenes.

The utility model belongs to the field of electrified railways, and particularly discloses a traction substation braking energy flywheel-hydrogen production-fuel cell power generation system which comprises a flywheel energy storage module, an electrolytic hydrogen production module and a hydrogen fuel cell module. The flywheel energy storage module and the electrolytic hydrogen production module are both connected to a traction bus, the output end of the electrolytic hydrogen production module is connected with the input end of the hydrogen fuel cell module, and the output end of the hydrogen fuel cell module is connected with a local load and / or a power distribution network of a railway system; the traction bus is connected with a power coordination controller capable of acquiring the real-time power of the traction bus; and the flywheel energy storage module and the electrolytic hydrogen production module access respective power signals to the power coordination controller. The system is suitable for recovery, hydrogen production and power generation of braking energy of a traction substation, the recovery rate of regenerative braking energy is improved, and the electric charge expenditure of a railway system is reduced.

The invention belongs to the technical field of electrified railway traction power supply, and particularly relates to a through cable bilateral power supply system, a working method and a control method thereof. The system is composed of a single-phase high-voltage traction cable, a main traction substation, a plurality of single-phase traction substations and a traction network. The main traction substation comprises a main traction transformer and a power flow controller, the single-phase traction substation comprises a single-phase traction transformer and a shunt reactor, the cable voltage is 110kV, and the traction bus voltage is 27.5 kV. During working, three-phase power grid electric energy is subjected to voltage reduction through the main traction transformer, part is directly supplied to a traction bus, and part is connected after being adjusted by the power flow controller; the high-voltage cable transmits electric energy to each single-phase traction substation, part of the electric energy is subjected to reactive compensation through the reactor after voltage reduction, part of the electric energy enters a traction network, and finally the bus and the substation electric energy are converged into the network to supply power to a train. According to the control method, the stability of the system is guaranteed by detecting voltage, collecting network side parameters, calculating a target value and reference current of the power flow controller and dynamically adjusting power flow.

This invention discloses an early fault diagnosis method for high-speed train traction transformers with missing data, comprising: (1) optimizing the individual position iteration equation and initial population position of the slime mold algorithm using Lévy flight and optimal point set distribution, and optimizing the running structure of the slime mold algorithm using a teaching optimization algorithm; (2) combining the improved slime mold algorithm with a CatBoost classifier to improve the F1 score of multi-class classification and finding the optimal CatBoost parameter configuration for classification performance; (3) training and classifying transformer fault data using a model combining the slime mold algorithm and the CatBoost classifier. This invention overcomes the influence of the large scale, high dimensionality and nonlinearity of transformer data on multi-class classification and the imbalance of the number of each category. Addressing the problem of mutual influence between different CatBoost parameter settings, it uses optimization algorithms to find the optimal parameter settings for classification performance. Finally, starting from the structural characteristics of the slime mold algorithm, it improves the problem of slow convergence speed and easy getting trapped in local optima in the traditional slime mold algorithm.

The utility model relates to the technical field of locomotive, especially a traction transformer mounting structure and locomotive, traction transformer mounting structure includes support plate, support plate extends along the first direction, oil tank, oil tank fixedly arranged in the upper end surface of support plate, is provided with traction transformer body device in the oil tank, first fixing frame and second fixing frame, first fixing frame and second fixing frame fixedly arranged in the both sides of oil tank along the first direction, first fixing frame and second fixing frame all are connected with support plate, first fixing frame and second fixing frame are connected with the outside lower end surface of locomotive, first fixing frame and support plate surround and form first installation space, second fixing frame and support plate surround and form second installation space, and the air cylinder is arranged in first installation space and second installation space, the utility model is convenient for power battery arrangement, does not increase the overall size of locomotive, improves the light weight level of locomotive, improves locomotive operation efficiency.

This invention discloses an online oil sample monitoring method and system that detects the hydrogen concentration in the oil in real time and calculates the rate of change of the hydrogen concentration. If the hydrogen concentration exceeds a set concentration, or the rate of change of the hydrogen concentration exceeds a set threshold, the oil sample is determined to be abnormal. This invention allows for oil sample testing without requiring trains to stop and power to be cut off, thus solving the problems of high technical barriers, long processing times, and high manpower and material costs associated with current traction transformer oil sample analysis methods.

The invention discloses a capacity-regulating and voltage-regulating traction transformer. A transformer body comprises an iron core, a low-voltage winding, a high-voltage winding, a voltage-regulating winding, an insulating pressing device assembly between the low-voltage winding and the high-voltage winding and an insulating pressing device assembly between the high-voltage winding and the voltage-regulating winding. A head and a tail are led out from two ends of the high-voltage winding, and a capacitance-regulating tap I and a voltage-regulating tap I are led out from the middle of the high-voltage winding. A head and a tail are led out from two ends of the low-voltage winding, and a capacitance-adjusting tapping tap II is led out from the middle. And voltage regulating tapping taps II are led out from the head end and the tail end of the voltage regulating winding. The capacity-regulating switch consists of a high-voltage capacity-regulating switch and a low-voltage capacity-regulating switch, the high-voltage capacity-regulating switch is connected with the capacity-regulating tap I of the high-voltage winding, and the low-voltage capacity-regulating switch is connected with the capacity-regulating tap II of the low-voltage winding. And the voltage regulating switch is connected with the voltage regulating tap I of the high-voltage winding and the voltage regulating tap II of the voltage regulating winding. The system improves the resource utilization rate, improves the power supply quality, reduces the total investment cost, reduces the transformer loss, and saves the energy.

An electrified railway flexible hub traction substation framework is characterized in that an alpha power supply arm and a beta power supply arm are connected to a three-phase power grid through a traction transformer, and two alternating current ends of a back-to-back converter are respectively connected to the alpha power supply arm and the beta power supply arm; the power distribution system bus is connected to a railway power distribution network through a first grid-connected transformer, and the power distribution system load is connected to the power distribution system bus through a power distribution transformer; the system further comprises an energy feedback system. The energy feedback system comprises a bidirectional DC / AC converter and a second grid-connected transformer. The direct current end of the bidirectional DC / AC converter is connected to the direct current end of the back-to-back converter, and the alternating current end of the bidirectional DC / AC converter is connected to the power distribution system bus through the second grid-connected transformer. The beneficial effects of the utility model lie in that the traction power supply system and the railway power distribution network are connected through the energy feedback system, mutual transfer of active power flow of the traction power supply system and the railway power distribution network can be realized, and the operation energy efficiency of railway power supply is improved.

The application provides a city area A-type vehicle topology structure capable of realizing flexible marshalling, comprising a semi-motor car TMC with a driver's cab at both ends, a middle part provided with one or more than one motor car MP with a pantograph, when the motor car MP with the pantograph is more than two, the semi-motor cars M1 and one or more than one of the motor cars M2 are connected between the adjacent motor cars MP with the pantographs; each pantograph is a traction unit, each traction unit is provided with a high-voltage system, a traction transformer, a traction converter, a traction motor, and the traction units close to both ends are provided with main and auxiliary integrated converters, and the application can quickly realize the transformation of the vehicle in different marshalling forms such as 3, 4, 6, 8, 3+3 multiple units, 4+4 multiple units and the like.

A fault identification method and system for a traction transformer, a product, a device, and a medium, relating to the field of rail transit traction equipment. The method comprises: acquiring a secondary-side grid voltage of a traction transformer and an alternating current-side voltage of a traction converter, wherein the alternating current side of the traction converter is connected to a secondary winding of the traction transformer; determining a state equation corresponding to the traction transformer, wherein the state equation is a state equation obtained on the basis of an equivalent circuit of the traction transformer and takes a primary-side current and a secondary-side current of the traction transformer as state variables; on the basis of the alternating current-side voltage, the secondary-side grid voltage, and the state equation, obtaining an estimated winding current value corresponding to the traction transformer; and determining an actual state of the traction transformer on the basis of the estimated winding current value and an actual winding current value, wherein the actual state is a fault state or a normal state. The present invention can achieve real-time detection, early warning and protection during train operation, has high response speed, and does not require additional sensors, thereby reducing hardware costs of fault detection.

A residual lifetime model for the oil-paper insulation of locomotive traction transformers is proposed. The method first integrates multi-source operation and maintenance data; second, based on advanced maintenance data, it automatically classifies health states in an unsupervised manner; then, it performs two types of predictions in parallel: predicting individualized residual lifetime based on time-series data and a state degradation model, and predicting statistical residual lifetime based on a lifetime distribution fitted from censored fault data; finally, it dynamically weights and fuses the two types of results according to data quality, outputting the final predicted value. This invention solves the problems of missing labels, incomplete data, and poor model adaptability in actual operation and maintenance, improving the accuracy, robustness, and adaptability of predictions, and providing effective support for predictive maintenance.

The application discloses a traction transformer, comprising a transformer body and a plurality of mounting seats arranged on the transformer body; all the mounting seats are distributed around the transformer body, any mounting seat has a first mounting surface downwardly distributed and used for abutting a vehicle body beam, and any mounting seat is provided with an elastic element abutting the first mounting surface and a fastener used for penetrating and locking the vehicle body beam. Compared with a conventional traction transformer and a mounting mode thereof, the traction transformer provided by the application adjusts a local structure and a mounting mode with the vehicle body, so that the vehicle body beam of the vehicle body supports the traction transformer through the mounting seat, and the elastic element is arranged between a contact surface of the vehicle body beam and the mounting seat, so that the traction transformer is suspended and mounted on the vehicle body beam and is elastically connected with the vehicle body beam. In a driving process, the vibration impact force brought by the traction transformer to the vehicle body can be better buffered, and the fatigue resistance and comfort of the vehicle body are improved.

The application provides a voltage source type high-speed train four-quadrant rectifier control method with introduced frequency additional damping. The application provides an improved voltage source type control scheme for the high-speed train four-quadrant rectifier, the traction transformer collects the voltage of the connection point of the vehicle and the traction network, the line total current effective value and the DC bus voltage of the DC side; first, the instantaneous reactive power Q and the active power P of the network side are calculated according to the collected data, the potential amplitude signal in the converter is obtained through the reactive loop; the V q FF additional damping is introduced in the active loop to calculate the synchronous phase angle; the control inner loop in the controller generates the PWM modulation signal for driving the four-quadrant rectifier according to the potential amplitude reference signal and the synchronous phase. The voltage source type control mode scheme is adopted to autonomously construct the voltage and the frequency, and the steady-state operation problem under the constant power characteristic under the weak railway power network can be solved.

The invention belongs to the technical field of power equipment state monitoring, and relates to a traction transformer built-in optical fiber partial discharge positioning method. According to the method, a plurality of Fabry-Perot optical fiber ultrasonic sensors are arranged in a transformer to collect partial discharge acoustic signals, multichannel data are obtained in a synchronous sampling mode, and the time difference of arrival of the signals is extracted based on a generalized cross-correlation phase transformation method. Dynamic sound velocity compensation is realized by constructing a second-order fitting model of sound velocity and temperature in oil, an initial positioning result is obtained in combination with a Chan algorithm, and three-dimensional coordinates of a partial discharge source are further obtained through nonlinear optimization iteration. Data screening is carried out through characteristic parameters such as a signal-to-noise ratio, a peak rise time ratio and kurtosis, and the positioning reliability is improved. The method has the characteristics of strong anti-electromagnetic interference capability, suitability for the internal working condition of the oil-immersed traction transformer and high positioning precision, and can be used for online partial discharge monitoring and fault early warning of traction power supply equipment.

The utility model discloses a fire suppression device for an under-train traction transformer of a motor train unit. The fire suppression device comprises a transformer, an oil cooling assembly and a fire suppression assembly, the oil cooling assembly comprises an oil storage tank, an oil cooler, an oil pump and a circulation pipeline. The oil pump is used for pumping oil in the oil storage tank into the transformer, and the oil flows back to the oil storage tank after flowing through the oil cooler. The fire suppression assembly comprises a protective cover, an infrared thermal imaging detector and a fire extinguisher, the protective cover covers the outer side of the wiring terminal, the infrared thermal imaging detector is used for collecting infrared thermal imaging data of the wiring terminal, and the fire extinguisher is connected to a spray head located in the protective cover through a pipeline. By adopting the above technical scheme, the temperature change and image data of the wiring terminal part can be monitored in real time, the accurate monitoring and early warning of fire hazards are realized, and the occurrence of fire hazards is effectively avoided.

The utility model discloses a device for simulating active EMI filtering of a traction system of a motor train unit, which comprises a traction transformer, a traction converter, a traction motor and an active filter, and is characterized in that the traction transformer is linked with a pantograph, acquires 25KV / 50HZ alternating current from an alternating current contact network and transmits the alternating current to the primary side of the traction transformer; the secondary side of the traction transformer is connected with a traction converter, and the output end of the traction converter is connected with a traction motor; the active filter comprises a sampling circuit which is used for collecting a current signal of a main circuit between the traction transformer and the traction converter, and the current signal is amplified and then compensated to the main circuit. The electric signals adjusted by the active filter are adjusted into three-phase alternating current with low frequency and voltage amplitude in the main circuit through the traction converter, and then the three-phase alternating current is transmitted to a three-phase asynchronous motor side for motor driving. According to the utility model, the electromagnetic environment of the motor train unit traction system can be accurately simulated, and the electromagnetic interference in the operation process can be reduced.

The application relates to the technical field of transformer manufacturing, and particularly discloses a clamping and fixing structure of a traction transformer, wherein a first clamping assembly is arranged at one end of an iron core along the axial direction of the iron core, the first clamping assembly comprises two first clamping pieces which are arranged in a spaced and opposite mode and used for clamping the iron core, a second clamping assembly is arranged at the other end of the iron core along the axial direction of the iron core, the second clamping assembly comprises two second clamping pieces which are arranged in a spaced and opposite mode and used for clamping the iron core, and the first clamping piece and the second clamping piece are integral bending structures. In this way, the two ends of the iron core are clamped by the two first clamping pieces and the two second clamping pieces respectively, and the integral bending structure is combined, so that the overall performance and stability can be effectively improved, manual welding work can be reduced, working hours can be reduced, production efficiency and operation safety can be improved.

The invention discloses a traction transformer with an adjustable ice melting voltage providing function, and relates to the technical field of electrified railway traction power supply. The traction transformer can also output 25-5kV adjustable ice melting voltage besides originally outputting 27.5 kV working voltage, the ice melting voltage is connected with contact networks of different numbers of power supply arms, 300-800A ice melting current can be output, and the defects of a traditional contact network ice melting method can be effectively overcome.