80 results about "Supercapacitor energy storage" patented technology

The invention relates to the technical field of power system frequency modulation, and particularly provides a super-capacity combined hydrogen fuel cell coupling thermal power frequency modulation system and method. The system comprises a multi-energy-flow collaborative core assembly which comprises a super capacitor energy storage unit, a hydrogen fuel cell RSOC unit and a thermal power generating unit collaborative module; the three-dimensional coupling collaborative link comprises electrical coupling, thermal coupling and control coupling; the system solves the problems of delayed response of traditional thermal power frequency modulation and insufficient adaptability of a single energy storage technology, and realizes collaborative optimization of stable control of power grid frequency and efficient consumption of renewable energy sources.

The invention relates to the technical field of power system control, and discloses a photovoltaic energy storage primary frequency modulation cooperative control system based on output prediction and SOC balance, which comprises a photovoltaic array unit, a photovoltaic inverter, a sodium ion super capacitor energy storage unit, a bidirectional DC / DC converter and a cooperative controller. The cooperative controller is configured to identify an output trend by using photovoltaic power prediction data, and dynamically adjust an energy storage SOC reference anchor value; a source storage virtual impedance model considering the real-time efficiency characteristic of the sodium ion super capacitor is constructed, and the primary frequency modulation power demand is dynamically allocated. When the state of the energy storage unit deteriorates, the power compensation amount is calculated through photovoltaic load shedding sliding mode offset control, and the closed-loop target of the photovoltaic inverter is corrected to share the frequency modulation task. And after the frequency modulation is finished, controlling the photovoltaic power to recover by adopting an asymmetric step length. The method solves the problems that the energy storage standby is not matched and the response capability is reduced under the extreme working condition, and improves the frequency modulation stability of the system.

The method is applied to the fields of train regenerative braking energy utilization, stray current and rail potential treatment and the like in electrified rail transit, especially urban rail transit. The invention provides a direct-current traction power supply system capable of reducing the energy storage capacity of a super capacitor of urban rail transit, which is combined with a super capacitor energy storage device of the urban rail transit and supplies power to a power electronic device for treating stray current and rail potential by utilizing regenerative braking energy of a train. The super-capacitor energy storage device has the following advantages that on one hand, the energy storage capacity of the super-capacitor bank in the super-capacitor energy storage device between train braking and traction can be reduced, and the utilization efficiency of regenerative braking energy stored by the super-capacitor bank is improved; on the other hand, the problems of stray current, rail potential and the like in the system can be solved from the source, and the power supply distance of a traction substation is remarkably increased. Therefore, the direct-current traction power supply system is of great significance to green and safe operation of urban rail transit.

The invention provides a firmware upgrading system and method supporting real-time state monitoring and resisting power failure, and relates to the technical field of industrial Internet of Things, the firmware upgrading system comprises a storage module, a power failure protection module and a processing module, the storage module comprises an on-chip FLASH memory and an off-chip NOR FLASH memory, the on-chip FLASH memory is used for being divided into a BOOT area, an APP area and an upgrading parameter storage area, and the processing module is used for processing the on-chip FLASH memory and the off-chip NOR FLASH memory. The off-chip NOR FLASH memory is used for dividing the off-chip NOR FLASH memory into a BANK1 region and a BANK2 region; according to the invention, a data redundancy guarantee is provided for firmware upgrading through a double-region backup mechanism of the storage module; the hardware power-off detection and super capacitor energy storage design of the power-off protection module avoids data loss and storage structure damage at the power-off moment from the hardware level; accurate data recording and recovery strategies of the processing module ensure accurate recovery and upgrading after power failure.

The invention discloses a thermal power generating unit coupling super capacitor energy storage frequency modulation instruction prediction method and system, and relates to the technical field of power system energy storage frequency modulation, and the method comprises the steps: obtaining an original frequency modulation sequence through a frequency modulation instruction of a thermal power generating unit, and dividing the original frequency modulation sequence into a training group, a proofreading group and a prediction group; training the training group through a BP neural network to generate a predicted value of the proofreading group; respectively calculating a difference error and a ratio error based on the actual value and the predicted value of the proofreading group to form a difference error sequence and a ratio error sequence; adjusting the frequency modulation instruction value of the prediction group to generate a difference error interval; adjusting the frequency modulation instruction value of the prediction group according to the ratio error sequence, and generating a ratio error interval; and combining the difference error interval with the ratio error interval to obtain an interval prediction value of the final frequency modulation instruction. The prediction precision of the frequency modulation instruction is obviously improved, and the uncertainty caused by single numerical prediction is avoided.

The present invention discloses a hybrid energy storage capacity optimization configuration method for smoothing wind power fluctuations, which belongs to the field of wind power generation technology, including: clustering wind power output data based on the K-means clustering algorithm to obtain a variety of wind power output scenarios; decomposing wind power output data based on the empirical mode decomposition method to obtain multi-order intrinsic mode functions, and reconstructing them into low-frequency components and high-frequency components, the low-frequency components are directly connected to the grid, and the high-frequency components are used as the power task of the hybrid supercapacitor energy storage system, and the hybrid supercapacitor energy storage system is defined as the target system; establishing a capacity configuration model for the target system, and constructing the optimization objective function and model constraint set of the capacity configuration model based on the cost input and constraint conditions of the target system; solving the capacity configuration model based on the genetic algorithm to obtain the initial optimization result, introducing a variable baseline and a fluctuation penalty coefficient, and performing further optimization. The present invention improves the efficiency of smoothing wind power fluctuations.

The invention relates to the technical field of thermoelectric and piezoelectric collaborative conversion and energy storage, in particular to a piezoelectric-thermoelectric composite energy acquisition and collection structure and a preparation method thereof, and the piezoelectric-thermoelectric composite energy acquisition and collection structure comprises a flexible substrate, a piezoelectric PVDF cantilever module, a Bi2Te3 thermoelectric column array module and a super capacitor energy storage and energy management module. The system drives the piezoelectric module to output pulse electric energy through mechanical vibration, and drives the thermoelectric module to output continuous direct current through environment temperature difference. Two paths of energy are uniformly input into the super capacitor for storage after being rectified and boosted, energy supply path switching and stable output are achieved through the energy management module, and the energy management module is suitable for a Bluetooth terminal, an MCU controller and wearable electronic equipment. The system is flexible in structure and high in integration level, has good electric energy regulation and control capability and environmental adaptability, and effectively improves the endurance and comfort of equipment.

The invention discloses a dual-function coupling device for synchronously enhancing photo-thermal evaporation water-salt separation and super capacitor performance. An upper electrode, a water conveying layer and a lower electrode are arranged above a water tank from top to bottom and are tightly attached to each other; the front extending section of the water conveying layer penetrates through a heat insulation layer arranged on the top of the water tank to make contact with seawater in the water tank, the rear extending section of the water conveying layer reaches a side salt precipitation layer arranged on the outer side of the water tank, the upper electrode serves as a photo-thermal / evaporation interface, seawater in the water conveying layer serves as electrolyte, and the water conveying layer serves as a diaphragm. The upper electrode, the water conveying layer and the lower electrode are tightly attached to form a supercapacitor structure, the device can synchronously perform solar photo-thermal evaporation water-salt separation and supercapacitor energy storage, and meanwhile, the device shows a synergistic enhancement effect when working; heat generated in the charging and discharging process of the supercapacitor can improve the evaporation rate to promote water-salt separation.

The invention is suitable for the technical field of electronic circuits, and provides a DC / DC and super capacitor cooperative control system of a station DC flexible intelligent bus coupler device, which comprises a bus coupler device, a DC bus, a bidirectional DC / DC converter and a super capacitor energy storage unit, the system is used for controlling the bidirectional DC / DC converter and the super capacitor energy storage unit to operate cooperatively so as to maintain the voltage stability of the DC bus. Monitoring the actual voltage value of the DC bus in real time; according to the deviation between the actual voltage value and the set value, the instantaneous output power proportion of the super capacitor energy storage unit and the steady-state output power proportion of the bidirectional DC / DC converter are dynamically adjusted; and when it is detected that the DC bus voltage deviation exceeds a preset threshold value, the super capacitor energy storage unit is preferentially controlled to carry out instantaneous power compensation, and the output power of the bidirectional DC / DC converter is adjusted to carry out steady-state power following. The problems of bus voltage transient instability, super capacitor over-discharge aging and low system operation efficiency are solved.

The invention relates to the technical field of new energy, in particular to a super-capacitor energy storage system, regulation and control equipment comprising the system and an energy regulation and control method of the super-capacitor energy storage system, and the system comprises a super-capacitor unit, a super-capacitor management system unit, a high-voltage box unit, a current conversion unit and an energy management system unit. The high-voltage box unit is respectively connected with the current conversion unit, the super capacitor management system unit and the super capacitor unit; the energy management system unit is respectively connected with the current conversion unit and the super capacitor management system unit; the super capacitor management system unit is provided with three levels of management units, the first-level super capacitor management unit is connected with the high-voltage box unit and the super capacitor unit, and the second-level super capacitor management unit is arranged in the high-voltage box unit. And the third-stage super capacitor management unit is respectively connected with the energy management system unit, the high-voltage box unit and the current conversion unit. The method can realize safe and efficient management of the energy of the super capacitor, and is suitable for popularization and application in the fields of energy storage and the like.

The invention discloses an electromagnetic transient equivalent modeling method of a semi-full hybrid MMC-SESS, and relates to the technical field of high-voltage flexible direct-current power transmission. The method comprises the following steps: obtaining a topological structure and a control strategy of the semi-full hybrid super capacitor energy storage type modular multilevel converter; according to the topology of the half-bridge sub-module and the full-bridge sub-module, basic electrical elements are determined, an equivalent model is established, and adjoint circuits of the half-bridge sub-module and the full-bridge sub-module are obtained; equivalent circuits of the half-bridge sub-modules and the full-bridge sub-modules are obtained through a nested fast solution method, and an equivalent model of the half-full hybrid super-capacitor energy storage type modular multilevel converter is obtained through series connection and superposition according to a half-full proportion; and performing simulation verification on the equivalent model. The method is simple and easy to implement, the number of the sub-modules and the voltage level can be expanded according to requirements, and compared with a detailed model, the simulation speed can be remarkably increased, the external and internal characteristics of the semi-full hybrid MMC-SESS can be accurately simulated, and system-level simulation analysis and control design of the semi-full hybrid MMC-SESS are supported.

1. Name of the product in this design: Energy Storage Unit (CTPS-020C). 2. Purpose of this design: Supercapacitor energy storage device for wireless power supply systems. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a three-phase grid-connected system based on hybrid energy storage complementation of a lithium battery and a super capacitor. Comprising a hybrid energy storage system unit, a control unit of a bidirectional energy storage circuit, a three-phase bridge-type grid-connected inverter and a control unit of the three-phase bridge-type grid-connected inverter, the hybrid energy storage system unit comprises a lithium battery energy storage unit and a super capacitor energy storage unit, and the lithium battery energy storage unit and the super capacitor energy storage unit are connected with the direct current bus through a bidirectional DC / DC converter; the control unit of the bidirectional energy storage circuit is used for obtaining reference power required to be provided by the lithium battery and the super capacitor through power distribution, taking a reference power signal as an input signal, and forming a control signal of a switching device through signal processing and conversion, so that the energy storage equipment is charged and discharged according to the reference power; the three-phase bridge-type grid-connected inverter and the control unit thereof are used for controlling the three-phase bridge-type inverter through PWM pulse signals. The stability and reliability of the power grid can be improved, and the operation cost of the power system is reduced.

The invention discloses a gravity energy storage and concrete supercapacitor energy storage composite energy storage system, which relates to the technical field of energy storage and comprises a concrete composite energy storage medium unit, a mechanical transmission unit, a control unit and an energy conversion unit, the control unit cooperatively controls the energy conversion unit and the mechanical transmission unit to convert unsteady-state electric energy into mechanical potential energy of the concrete energy storage medium unit, and charges the concrete energy storage medium unit to convert the unsteady-state electric energy into electric potential energy. The control unit cooperatively releases gravitational potential energy of the concrete energy storage medium unit and the capacitor through feedback adjustment, and stable electric energy is formed through the energy conversion unit to be input into a power grid. According to the energy storage system, gravity energy storage and concrete capacitor energy storage are combined, the advantages of the gravity energy storage and the concrete capacitor energy storage are brought into full play, and the energy density, the power density and the energy conversion efficiency of the energy storage system are improved.

The invention discloses a preparation method of a nitrogen-sulfur co-doped lignin-based hierarchical porous carbon material and supercapacitor energy storage application, and belongs to the technical field of preparation methods and application of porous carbon materials, and the preparation method comprises the following steps: (1) dropwise adding an ammonium sulfate solution into sulfate pulping black liquor, and adjusting the pH value, after standing reaction, drying to obtain ammonium sulfate precipitated lignin; (2) uniformly mixing lignin with potassium tartrate and potassium nitrate, drying and grinding to obtain a mixture; and (3) pyrolyzing the mixture in an inert atmosphere, washing the carbonized product with dilute acid, filtering, and drying to obtain the porous carbon material. Potassium tartrate promotes formation of graded pores through the mild pore-forming effect, and the foaming effect of potassium nitrate can inhibit formation of coal tar and excessive carbon skeleton etching in the pyrolysis process. The supercapacitor electrode material prepared from the porous carbon has high specific capacitance, excellent cycling stability and high energy density.

This invention provides a firmware upgrade system and method that supports real-time status monitoring and is resistant to power outages, relating to the field of industrial Internet of Things (IoT) technology. It includes a storage module, a power outage protection module, and a processing module. The storage module comprises an on-chip FLASH memory and an off-chip NOR FLASH memory. The on-chip FLASH memory is divided into a BOOT area, an APP area, and an upgrade parameter storage area. The off-chip NOR FLASH memory is divided into BANK1 and BANK2 areas. This invention provides data redundancy for firmware upgrades through a dual-zone backup mechanism in the storage module. The hardware power outage detection and supercapacitor energy storage design of the power outage protection module prevent data loss and storage structure damage during power outages at the hardware level. The processing module's precise data recording and recovery strategy ensures accurate recovery and upgrade after a power outage.

The invention discloses a floating wind power fluctuation stabilizing system and method. The system comprises a wind power prediction module which predicts power based on an LSTM network and processes data by adopting a regression filling method; the model prediction control module is used for constructing a multi-objective optimization problem to coordinate grid-connected power smoothness, energy storage SOC maintenance and output minimization; the fluctuation decomposition module is used for decomposing power fluctuation into high-frequency and low-frequency components by using VMD; the hybrid energy storage module comprises flywheel energy storage and super-capacitor energy storage which are used for processing low-frequency and high-frequency components respectively; and the coordination controller dynamically distributes hybrid energy storage output. The floating wind power complex power fluctuation can be effectively coped with, the impact on a power grid is remarkably reduced, the multi-time scale out-of-limit times and the energy storage demand quantity are introduced to serve as evaluation indexes, a quantitative basis is provided for control strategy optimization and energy storage economic configuration, and the smooth effect, robustness and economical efficiency of the system are improved.

The application discloses a kind of distributed multi-mode self-powered trigger sensors for intelligent fluid heating system, belong to fluid heating intelligent control technical field.The sensor is arranged in the outer wall of fluid pipe behind each water point faucet, and the energy is generated spontaneously using the energy of fluid in pipe and environment, only detects hot water enable state and sends unique water point ID to central control unit, does not collect, does not transmit water temperature, flow and any data.The sensor includes TEG thermoelectric generator unit, button type supercapacitor energy storage unit, low-power BLE 5.0 wireless communication unit, heat-sensitive trigger unit, can be adapted to multiple self-powered modes, only wakes up when triggered, completely powered off in non-trigger state, free wiring, maintenance-free, adapt to all kinds of fluid heating equipment, with strong practicability and landing.

The present application relates to the field of capacitor energy storage, and relates to a method for suppressing impact current of high-power pulse load based on super capacitor energy storage.When a trigger instruction is received by a system load driver, the target power value of the trigger instruction is analyzed to determine the compensation target current, and the advance compensation amount at each time point is determined.When the pulse is started, the voltage deviation between the bus voltage and the rated bus voltage is obtained in real time, the feedback current component at each time point is analyzed, the superimposed compensation component at the corresponding time point is determined in combination with the compensation target current, the upper limit constraint of the superimposed compensation component is set based on the bus voltage change rate and the voltage deviation, the capacitor discharge current given amount is determined based on the upper limit constraint, when the capacitor discharge current decreases to zero, the net difference between the discharge energy and the recoverable energy of the super capacitor within the adjacent pulse period is calculated based on the pulse period and the duty cycle, the charging current given value during the pulse interval is determined, and the impact current is finely suppressed.

The present invention relates to a DC bus hierarchical response coordinated control method for a hybrid power generation system of supercapacitor energy storage and micro gas turbine, comprising: a micro gas turbine, a generator, a three-phase bidirectional converter, a bus capacitor, an inverter, a load, a DC converter, a supercapacitor, a three-phase converter controller and a DC converter controller. The high-power dynamic response of the supercapacitor energy storage unit compensates for the low dynamic response of the micro gas turbine output power, so that the system is in a state of instantaneous power balance in real time, ensuring the stability of the DC bus voltage and enhancing the adaptability of the micro gas turbine power generation system to pulse power loads. It can ensure the stable operation of the hybrid power generation system of supercapacitor energy storage and micro gas turbine, and improve the transient power quality of the system under impact loads. The proposed method can effectively improve the adaptability of the micro gas turbine power generation system under complex working conditions, and has great promotion and application value.

The invention relates to the technical field of relay protection, in particular to a multi-motor black-start power coordination method and system based on hybrid energy storage. Initializing a multi-motor black-start system based on supercapacitor energy storage and an uninterruptible power supply; after the system is initialized, the black-start process of the motor 1 is carried out, and stable operation monitoring is carried out; when the motor 1 operates stably, the black start process of the motor 2 is carried out. According to the multi-motor black-start optimization method and system based on the hybrid energy storage master-slave control mode, an uninterruptible power supply serves as a master control unit to provide voltage support, and energy stored by a supercapacitor serves as a slave control unit to quickly supplement starting current, so that organic combination of a voltage source and a current source is realized; meanwhile, UPS output amplitude limiting is dynamically adjusted according to initial starting characteristics of motors with different powers, sequential controllable starting of multiple motors is achieved by adopting a sectional starting process, and the problems that in a traditional scheme, UPS capacity configuration is too large, and the controllability of the starting process is poor are effectively solved.

The present invention discloses a capacity configuration method for a wind power generation composite energy storage system. The method analyzes the rated output power and rated output energy of the wind power generation composite energy storage system, based on the wind power generation composite energy storage system composed of a wind power generation system, a lithium battery energy storage unit, and a supercapacitor energy storage unit. A power configuration method is analyzed based on a power mathematical model in response to the composite energy storage power demand of the wind power generation system. A power configuration method is analyzed based on a power mathematical model in response to the composite energy storage power demand of the wind power generation system. A cost-based capacity configuration method is analyzed based on a cost mathematical model in response to the composite energy storage cost demand of the wind power generation system. The three configuration methods are comprehensively optimized to achieve reasonable capacity configuration of the wind power generation composite energy storage system.

1. The name of the design product: energy storage unit (CTPS-007C). 2. The use of the design product: supercapacitor energy storage device for wireless power supply system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention provides a vehicle-mounted multi-source self-power-generation power supply system and a multi-source power supply method thereof. Comprising the steps that S1, a micro piezoelectric power generation module is arranged in a micro vehicle chassis or a vehicle body; s2, micro wind power generation units are installed at the vehicle air inlet grille and the streamline position of the vehicle roof; s3, setting a dual-mode intelligent power supply management system, wherein the dual-mode intelligent power supply management system comprises a super-capacitor energy storage module and a lithium polymer battery pack; s4, adopting a voltage detection circuit to monitor the voltage states of the super capacitor energy storage module and the lithium polymer battery pack in real time; s5, a light energy collecting film is arranged in the micro space in the vehicle and attached to the inner side of a vehicle window or the surface of an instrument panel, and a lighting source in the vehicle is converted into supplementary electric energy; the system has the advantages that efficient cooperative power supply of multiple devices in a micro space is achieved, and the use convenience and the energy utilization efficiency of the electronic devices in the vehicle are remarkably improved.

This invention relates to the field of power system frequency regulation technology, and in particular provides a supercapacitor-coupled hydrogen fuel cell-coupled thermal power frequency regulation system and method. The system includes a multi-energy flow collaborative core component, comprising a supercapacitor energy storage unit, a hydrogen fuel cell RSOC unit, and a thermal power unit collaborative module; a three-dimensional coupling collaborative link, including electrical coupling, thermal coupling, and control coupling. This system solves the problems of sluggish response in traditional thermal power frequency regulation and insufficient adaptability of single energy storage technologies, achieving synergistic optimization of grid frequency stability control and efficient renewable energy consumption.

The present application relates to the technical field of nanocomposite materials, and particularly relates to a preparation method of two-dimensional multi-stage pore MOF material with self-repairing capability and application thereof.The method of the present application is as follows: including the following steps, using an organic ligand, which can also be 2,6-diaminopyridine as a doping ligand to increase the amino functional groups on the MOF body, using an amphiphilic block copolymer as a template agent, using GO as a substrate to induce metal ions to form MOF material, washing off the template agent, and finally obtaining two-dimensional mesoporous MOF material.Grafting UPY-NCO molecules on the hydroxyl or amino end of the MOF material, and then forming dimers through four hydrogen bonds to obtain a crosslinked network.The preparation method of the present application is novel, the MOF material prepared by using the method has high cycle stability, and after high-strength use, the hydrogen bonds can be preferentially sacrificed, and the hydrogen bonds can repair themselves, which greatly improves the service life of the material and improves the electrochemical property.The material can be used as a supercapacitor energy storage electrode material.

The invention discloses a modular high-capacity test power supply system, method and equipment and a storage medium, and relates to the technical field of test power supplies, a modular super-capacitor energy storage module adopts high-density direct-current energy storage, the size is small, more energy is stored, the capacity can be flexibly expanded through the modular design, and the limitation of the traditional energy storage capacity is broken through; meanwhile, the input and charging module can efficiently convert low-voltage commercial power into direct current and continuously charge the energy storage module, and the power conversion and filtering module is responsible for converting the direct current into alternating current in a high-quality mode and filtering harmonic waves, so that stable and high-quality output is guaranteed, and the large-capacity test requirement is met; in addition, the super capacitor is charged and discharged based on electric field force, the speed is extremely high, power can be rapidly adjusted, and the problem of slow response of traditional energy storage is solved. In addition, the control module monitors and coordinates all the modules in real time, quickly receives feedback, sends instructions according to strategies and requirements, and quickly coordinates all the modules when the power changes, so that quick response and stable operation of the system are realized, and smooth development of the test is ensured.

This invention relates to the field of nanocomposite materials technology, specifically to a method for improving the cycling stability of MOF electrode materials and its application. The method of this invention uses aromatic hydrocarbons with hydroxyl or amino groups as organic ligands and MOFs that regulate the ligands. UPy-NCO molecules are grafted onto the hydroxyl or amino ends of the MOF material, and then dimers are formed through quadruple hydrogen bonds to obtain a cross-linked network. The preparation method disclosed in this invention is novel, and the MOF material prepared using this method exhibits high cycling stability, which can greatly improve the material's lifespan. This material can be used as an energy storage electrode material for supercapacitors, exhibiting excellent electrochemical performance and long service life.

The application provides a peak load intelligent adjustment method and system for a supercapacitor energy storage system of a computing center, relates to the technical field of energy management, and comprises the following steps: a coupling decision mechanism is constructed between a task scheduling layer and an energy storage scheduling layer, a plurality of candidate task execution time sequences are generated based on to-be-executed task information, a charging and discharging time window is correspondingly decomposed from a load peak value period, charging and discharging power and a time sequence are allocated, residual peak power is calculated and an optimal scheme is selected, and real-time monitoring and dynamic adjustment are performed, so that the peak load of the computing center is effectively reduced, the energy utilization efficiency is improved, and power grid fluctuation is reduced.

The invention discloses an optimized operation method for a rail transit green energy system, and relates to the technical field of comprehensive energy systems, and the method comprises the steps: building a regenerative braking energy utilization model through the energy storage maximization regenerative braking energy utilization rate of a supercapacitor; performing compensation processing on a non-traction load based on the regenerative braking energy utilization model to obtain utilization efficiency and economic benefits of regenerative braking energy; establishing an improved light robust optimization model based on the utilization efficiency of the regenerative braking energy, the economic benefit and the distributed photovoltaic output uncertainty; and performing load verification according to the improved light robust optimization model to obtain an optimized operation result of the rail transit green energy system. According to the method, challenges caused by different time resolutions of distributed photovoltaic power generation and traction load are effectively solved, collaborative optimization of risk cost and operation cost is realized, and the overall operation efficiency and reliability of a rail transit green energy system are improved.