86 results about "Traction transformer" patented technology

The invention relates to the technical field of power monitoring, in particular to an urban rail power supply system fault early warning method based on multi-source data fusion, which comprises the following steps: acquiring a thermogram, extracting a temperature drift trajectory, marking a thermal abnormal point, identifying abnormal data by combining voltage sampling, analyzing the overlapping property of abnormal time and direction, and positioning a fault overlapping point. And identifying the linkage early warning area through spatial statistics. According to the method, the continuous drift trajectory of the temperature gravity center in the traction transformer thermogram is recognized, the thermal abnormal points are extracted, the voltage sudden change features are analyzed in combination with the voltage sampling sequences in the same time period, the composite recognition mode of time synchronization and trend direction comparison is achieved, the fault symptom positioning accuracy is effectively improved, and the fault symptom positioning accuracy is improved. By aggregating the fault coincidence points in the plurality of power supply sections and executing the spatio-temporal clustering operation, the capability of sensing common anomalies in the region can be significantly improved, and a potential linkage fault region can be clearly identified based on joint calculation of a spatial adjacent structure and a statistical aggregation degree.

The invention discloses a simulation method of a full-system coupled railway traction power supply system, which comprises the following steps: taking a traction power supply system and a train group as integrated simulation objects, and respectively constructing traction power supply network models including equivalent models of traction transformer, traction network, AT station and public power grid parameters; a multi-train operation simulator is constructed, and the multi-train operation simulator comprises various parameters such as trains, lines, signal systems, operation organizations and the like. Traversing all on-line trains through a multi-train operation simulator, substituting the on-line trains into a traction power supply network model, and dynamically calculating operation parameters and traction loads of a train group, including calculating locomotive initial current according to train initialization voltage, solving a traction power supply network node voltage equation and updating locomotive terminal voltage; and correcting the traction and braking characteristics of the train based on the updated locomotive terminal voltage. The method overcomes the defects of a traditional calculation method using a traction power supply system as an isolated network, reveals the dynamic state of train operation and the distribution characteristics of the traction network, and finally can obtain various parameters of each train.

The invention discloses a power grid power compensation method, which is applied to a controller, and the controller is connected with a power compensation system. The power compensation system comprises a traction transformer and a converter. The converter is connected with the traction transformer through a first power supply arm and a second power supply arm of the traction transformer; the method comprises the following steps: acquiring a first power parameter of a first power supply arm, and acquiring a second power parameter of a second power supply arm; determining a power compensation parameter for performing power compensation on the first power supply arm and the second power supply arm under the condition of determining that a power adjustment condition is met based on the first electric power parameter and the second electric power parameter; the first power supply arm and the second power supply arm are subjected to power compensation based on the power compensation parameter and the converter, namely, the power difference between the two power supply arms (the first power supply arm and the second power supply arm) is adjusted through the calculated power compensation constant and the converter, so that the influence of unbalanced negative sequence voltage is reduced, and the power supply stability is improved.

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 invention relates to a heavy haul railway traction transformer state monitoring method, device and equipment. The method comprises the following steps: acquiring a real-time sound signal of a traction transformer of the heavy haul railway; performing time-frequency feature extraction on the real-time sound signal to obtain a Mel time-frequency spectrogram; inputting the Mel-time spectrogram into a pre-trained voiceprint feature extraction model to obtain to-be-detected feature embedding; the voiceprint feature extraction model is a neural network model obtained by training based on an audio data set; according to the distance between the to-be-detected feature embedding and the pre-stored feature embedding in the voiceprint feature memory library, obtaining an operation state monitoring result of the traction transformer; the pre-stored feature embedding is obtained by extracting a sound signal based on the traction transformer in a normal operation state. By adopting the method, the state monitoring accuracy of the heavy haul railway traction transformer can be improved.

The invention discloses a locomotive electrical system and a locomotive power supply control method, and the locomotive electrical system is characterized in that the high-voltage input end of a traction transformer is electrically connected with a locomotive contact net through the rising of a pantograph, or is electrically disconnected with the locomotive contact net through the falling of the pantograph; the input end of the four-quadrant rectifier module is connected with the low-voltage output end of the traction transformer; the auxiliary load module, the power battery module and the traction module are respectively connected with the output end of the at least one four-quadrant rectification module; the power battery module is used for storing energy and supplying power to the locomotive; the traction module is used for traction locomotive driving and / or kinetic energy recovery. The invention provides a locomotive electrical system. An auxiliary load module, a power battery module and a traction module are connected to the output end of a four-quadrant rectification module. The auxiliary load module, the power battery module and the traction module operate independently so that a charging strategy can be controlled conveniently, and charging of a power battery of a locomotive electrical system can be achieved when a locomotive operates.

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 invention discloses a method for calculating a winding temperature influence coefficient of a lightweight traction transformer bushing. Comprising the following steps: establishing a lightweight traction transformer winding body and sleeve thermal test platform under an air cooling working condition, carrying out a steady thermal test under a typical traction working condition of a motor train unit, collecting temperature data, and calculating a winding temperature influence coefficient of a sleeve based on the obtained temperature data, and evaluating the negative influence degree of the bushing on the winding temperature of the lightweight traction transformer. The beneficial effects of the invention are that a test method, an evaluation coefficient and an evaluation method which consider the influence of the sleeve on the lightweight traction transformer winding are proposed for the first time, and the axial temperature change trend of the winding and the circumferential temperature distribution rule of the winding at the section where the sleeve is located are fused; objective and accurate evaluation of the negative influence degree of the prototype sleeve on the winding temperature under specific design can be realized, and a new technical means is provided for efficient design and structural optimization of the lightweight traction transformer.

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 invention discloses a railway vehicle waste heat recovery heat management method and a railway vehicle waste heat recovery system, the railway vehicle waste heat recovery system comprises a traction transformer, a phase change heat exchanger and a passenger room system, and a proportioning valve and a fluid pump are connected between the traction transformer and the phase change heat exchanger; a high-temperature cooling medium of the traction transformer flows back to the traction transformer after entering the phase-change heat exchanger through the proportioning valve and the fluid pump, and a phase-change working medium of the phase-change heat exchanger absorbs heat of the high-temperature cooling medium, becomes a gaseous working medium and then enters the passenger compartment carriage. The gaseous working medium is changed into a liquid working medium to flow back to the phase change heat exchanger after exchanging heat with air-conditioning fresh air in the passenger compartment, the waste heat potential is predicted according to the temperature of the high-temperature cooling medium at the outlet of the traction transformer and the temperature of the passenger compartment, and dynamic logic control is conducted on the proportioning valve based on a differential equation; and adjusting the temperature of the passenger compartment to a steady state. According to the heat management method for waste heat recovery of the railway vehicle and the waste heat recovery system of the railway vehicle, the optimal working condition point is accurately judged through intelligent logic control, the carriage is kept at the comfortable temperature, and therefore the purpose of saving energy is achieved.

The invention discloses a double-source locomotive ramp anti-slip system and a control method. The ramp anti-slip system for the double-source locomotive comprises a traction transformer, a first traction converter, a second traction converter, a first traction motor, a second traction motor, a third traction motor, a fourth traction motor, a first speed sensor, a second speed sensor, a third speed sensor, a fourth speed sensor and a controller, the controller is used for judging whether the first traction motor, the second traction motor, the third traction motor and the fourth traction motor are reverse or not according to the rotating direction and the rotating speed to determine whether the double-source locomotive slides or not and the sliding speed; the controller is used for conducting traction and braking control on the first traction motor, the second traction motor, the third traction motor and the fourth traction motor through the first traction converter and the second traction converter respectively when the double-source locomotive slides. According to the anti-slip device, a driver does not need to participate, and even if slipping occurs, the slipping force of the double-source locomotive can be counteracted, so that anti-slip is realized.

The utility model discloses a traction transformer radiating device which comprises an oil tank and a heat exchanger, the heat exchanger comprises a heat exchange tube, radiating fins and a radiating fan, and the heat exchange tube is communicated with the oil tank through an oil pump; the cooling fins are arranged on the outer side of the coiled pipe at intervals, the cooling fins are parallel to the advancing direction of the train, and the cooling fan is arranged on one side of the cooling fins; a plurality of heat pipes are arranged between the cooling fins in a penetrating mode, evaporation sections of the heat pipes are located between the cooling fins, and condensation sections of the heat pipes extend outwards and exceed the edge of the oil tank. The heat pipes extending out of the edge of the oil tank are inserted into the cooling fins of the radiator in a penetrating mode, when a train travels, heat of the cooling fins is transferred to evaporation sections of the heat pipes through the heat pipes, and the heat pipes are cooled through traveling air; when the train stops, the cooling fan is used for directly dissipating heat of the cooling fins, noise generated when the cooling device operates is reduced, energy loss generated when the cooling fan operates is reduced, and the cooling effect of the traction transformer is guaranteed.

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 utility model provides a traction transformer oil injection and exhaust system based on distributed oil injection and exhaust. The traction transformer oil injection and exhaust system comprises a traction transformer, an oil cooler, an oil pump, an oil inlet pipe and an oil return pipe. The traction transformer and the oil cooler are connected in series through an oil inlet pipe and an oil return pipe, and insulating oil in the traction transformer is pumped into the traction transformer from the oil cooler through an oil pump on the oil inlet pipe and then returns to the oil cooler through the oil return pipe for circulating cooling; a box cover quick connector is arranged on the upper portion of the traction transformer, oil is injected into the traction transformer through the box cover quick connector, a balance pipe is arranged on the box cover quick connector of the traction transformer and connected to an external oil conservator, and a detachable pressurizing air pump and a respirator are arranged on the oil conservator. An oil cooler exhaust port is formed in the top of the cooler, and a detachable oil cooler exhaust pipe is connected outside the oil cooler exhaust port; a traction transformer and an oil inlet pipe exhaust port are arranged at the top of the oil inlet pipe, and a detachable oil inlet pipe and a transformer exhaust pipe are connected to the traction transformer and the oil inlet pipe exhaust port.

The invention provides a traction device for hoisting a transformer. The traction device comprises a mainframe box, the climbing assembly is installed on the side portion of the mainframe box, the climbing assembly clamps the left side and the right side of the electric pole, and the climbing assembly is used for driving the mainframe box to ascend and descend so as to complete automatic hoisting of the transformer and automatic separation of the mainframe box; a lower clamping assembly; the reserved bracket is clamped and mounted on the outer wall of the electric pole, and the reserved bracket is arranged above the mainframe box; the hanging assembly comprises a first hanging bracket, a second hanging bracket, a wire guide wheel and an end plate; a hoisting assembly; an outer clamp assembly; a rotating assembly; an outer blocking assembly; according to the device, the reserved bracket and the transformer body can be automatically driven to be lifted, butt joint of the transformer body and the reserved bracket is completed, manual high-altitude traction is not needed, the transformer laying safety is higher, and the operation stability and efficiency are higher.

The application provides a device and method for improving the sinusoidal degree of traction power supply network current, which comprises a traction transformer, a current sensor, at least one pulse rectifier, at least one pulse rectifier controller, a current compensation unit and a current compensation controller; the traction transformer comprises a primary winding, at least one first secondary winding and one second secondary winding; two ends of each first secondary winding are connected to one pulse rectifier; each pulse rectifier is connected with one pulse rectifier controller; the current compensation unit is connected to two ends of the second secondary winding; the current compensation controller is connected with the current compensation unit, the current sensor and each pulse rectifier controller, respectively. The device provided by the application effectively improves the sinusoidal degree of traction power supply network current, reduces the current distortion rate, improves the traction power supply network current performance and the stability of the traction power supply network.

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 invention provides a structure suitable for converting a Vx wiring traction transformer into flexible single-phase wiring, based on two single-phase transformers and an in-phase power supply device, an a1x1 winding and an a2x2 winding on the primary side of the transformer are connected in parallel to form a parallel winding 1; a b1y1 winding and a b2y2 winding on the secondary side of the transformer are connected in parallel to form a parallel winding 2; the parallel winding 2 and the in-phase power supply device are connected in parallel to form a parallel in-phase winding; and the parallel winding 1 and the parallel in-phase winding are connected in series, the series connection point is grounded, and the non-series connection end points are respectively connected with a contact network and a positive feeder line, so that a 2 * 27.5 kV power supply framework is formed. Flexible single-phase wiring transformation of the three-phase Vx wiring traction substation is achieved, utilization of the existing three-phase Vx wiring traction transformer can be achieved, related transformation and abandoned engineering caused by replacement of the traction transformer are avoided, high-voltage side transformation is avoided, and the influence on normal operation organization of a railway during transformation is reduced. And meanwhile, the cost for re-evaluating the electric energy quality can be saved.

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 invention discloses a unified power flow calculation method for a power system and a through traction power supply system, and the method specifically comprises the steps: introducing a virtual three-phase bus, representing the virtual three-phase bus by X, Y and Z, employing a fixed connection mode between the virtual bus and a traction transformer, and solving a voltage matrix of the traction transformer; a voltage transformation correction matrix is obtained according to the connection relation between the virtual bus and the power system, and the voltage transformation matrix is corrected, so that the commutation connection of the traction transformer and the power system is processed in a unified mode; no matter what power supply mode is adopted by the traction network, load flow calculation is carried out on each traction substation and the traction networks on the two sides of the traction substation, a compensation current method is provided for different operation modes of the subareas, and the conditions of out-phase power supply, bilateral power supply, cut-through power supply, cross-area power supply and the like are processed through compensation current. According to the invention, commutation connection of various traction transformers and systems can be flexibly processed, the method is universal, simple and feasible, and the matrix calculation amount is small; and the method has very high adaptability.

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 relates to an environmental noise suppression method, device and equipment applied to a traction transformer in a heavy haul railway, a storage medium and a program product, and relates to the technical field of power equipment fault diagnosis. By adopting the method, the noise reduction effect of the environmental noise can be improved. The method comprises the following steps: performing voiceprint feature extraction on a collected environmental noise digital signal to obtain a voiceprint feature of the environmental noise digital signal, and constructing a stable environmental noise filter based on the voiceprint feature; inputting the collected traction transformer sample sound signal into a stable environment noise filter to carry out noise preliminary suppression so as to obtain a noise reduction signal; noise interference is added to the noise reduction signal for data enhancement to obtain an enhanced target noise reduction signal, and a deep noise reduction model is trained through the target noise reduction signal to obtain a non-stationary complex noise suppression model; and carrying out noise suppression on the collected current sound signal of the traction transformer through a stationary environment noise filter and a non-stationary complex noise suppression model.

The application provides an input bridge arm shared hybrid through traction power supply device and a control method thereof. The device comprises a balanced traction transformer, single-phase multi-tap transformers, a two-phase three-bridge-arm module and an H-bridge module. The primary side of the balanced traction transformer is connected with a three-phase power grid. Two ports of the secondary side of the balanced traction transformer are respectively connected with the primary sides of two single-phase multi-tap transformers. The upper connection points of the secondary sides of the two single-phase multi-tap transformers are respectively connected with the middle points of two-phase bridge arms of the two-phase three-bridge-arm module. The lower connection points are connected with the middle point of the common bridge arm of the two-phase three-bridge-arm module after being collinear. The DC side of the two-phase three-bridge-arm module is connected with the DC side of the H-bridge module. The AC side of the H-bridge module is connected with a traction grid. The application can further reduce the number of active devices required for reconstruction, reduce the system reconstruction and construction cost, and ensure reliable operation of the device by using the method.