659 results about "Flywheel energy storage" patented technology

The invention relates to the technical field of data center energy management, and discloses a flywheel energy storage system control system for data center computing power load energy recovery, which comprises an energy storage unit, a load monitoring unit, a flywheel control unit and an energy distribution unit. The energy storage unit is provided with a plurality of groups of flywheel energy storage devices capable of charging / discharging; the load monitoring unit monitors load data by covering key nodes of computing power equipment through a power sensor; the flywheel control unit collects flywheel rotating speed and power grid frequency fluctuation data; and the energy distribution unit decides charging and discharging based on load data, establishes a load and frequency coordinated alternating control strategy, and dynamically adjusts and predicts the running state of the flywheel. The system adopts time sequence synchronous control, the energy distribution unit comprises multiple modules, the alternate controller supports dual-mode switching and parameter optimization, and the flywheel unit adopts an annular redundancy or star-shaped concentrated structure. The system realizes efficient recovery of computing power load energy and flywheel energy storage optimization scheduling, and improves the energy utilization rate of a data center and the stability of a power grid.

The invention relates to the technical field of comprehensive application of renewable energy sources and hydrogen energy, in particular to a wind-solar-hydrogen multi-energy complementary intelligent scheduling platform. According to the technical scheme, the wind-light-hydrogen multi-energy complementary intelligent scheduling platform comprises a wind-light power generation unit which monitors wind power and photovoltaic power fluctuation in real time; the hybrid energy storage unit comprises a super capacitor and a flywheel for energy storage and respectively responds to millisecond-level and second-level power fluctuations; the hydrogen energy subsystem comprises an electrolytic hydrogen production device, a hydrogen storage tank and a fuel cell and responds to minute-level power scheduling; and the multi-time scale controller is configured to execute millisecond-level, second-level and minute-level cooperative control and dynamically match the wind-light fluctuation and the hydrogen energy response speed. According to the method, through multi-time scale dynamic cooperative control, the matching problem between the wind-solar power generation volatility and the hydrogen energy response lag is effectively solved, and seamless connection between second-level high-frequency fluctuation suppression and minute-level energy scheduling is achieved.

The invention discloses a hydrogen cooling superconductive flywheel composite energy storage system, which relates to the technical field of new energy storage and comprises a superconductive flywheel energy storage module, a lithium battery energy storage module, a power conversion module, an intelligent control module, a cooling sub-module and a hydrogen energy recovery module, by combining the quick response characteristic of the superconducting flywheel and the high energy density of the lithium battery, the superconducting flywheel can realize quick energy storage and release by utilizing the friction-free characteristic of the superconducting flywheel, a cooling sub-module and a hydrogen energy recovery module are used, the cooling requirement of the superconducting flywheel is ensured, and meanwhile, energy recovery can be carried out; by utilizing the characteristic of high energy density of the hydrogen battery, the energy storage capacity of the composite energy storage system is further improved, and the limitation of a single energy storage technology on power density and energy density can be effectively solved through the hybrid energy storage system; and more reliable and efficient energy storage support is provided for the fields of power grid peak regulation, renewable energy source grid connection, electric automobiles and the like.

The invention relates to the technical field of power supply management, in particular to a flywheel energy storage and storage battery hybrid UPS coordination management system and method, and the method comprises the steps: collecting the operation state data of a flywheel energy storage unit and a storage battery unit according to a preset collection frequency; predicting flywheel energy storage and energy supply control input of a storage battery in a future time window based on the acquired running state data of the flywheel energy storage unit and the storage battery unit, and generating a corresponding control time sequence; acquiring a power supply overall efficiency parameter in the corresponding time window under the corresponding control time sequence; the control time sequence is optimized by analyzing changes of power supply overall efficiency parameters, and the charging and discharging processes of the flywheel energy storage unit and the storage battery are managed in a coordinated mode.

The invention relates to the technical field of flywheel energy storage, and discloses a flywheel energy storage and storage battery hybrid UPS control method, which comprises the steps of planning a hybrid energy storage control process based on load characteristics and energy storage equipment state parameters, and determining a dynamic adjustment algorithm and a cooperative control strategy; determining a working mode according to the real-time load demand and the energy storage equipment state parameter; generating a hybrid energy storage control strategy set and determining an execution sequence; generating a parameter configuration list and a strategy scheme list of each mode; and performing correlation matching to generate an overall control scheme. The invention further relates to the contents of dynamic control boundary determination, specific strategies in different working modes, control parameter updating, switching rule presetting, hybrid energy storage control database establishment and the like. According to the method, efficient cooperation of the flywheel and the storage battery is achieved, the adaptability of the UPS system to a load scene and the power supply reliability are improved, the working state of energy storage equipment is optimized, the service life of the storage battery is prolonged, and long-term stable operation of the system is guaranteed.

The invention discloses a thermal power generating unit, flywheel and compressed air hybrid energy storage system and an operation method, and relates to the technical field of flexibility improvement of novel energy storage and thermal power systems. The system comprises a flywheel energy storage subsystem, a compressed air energy storage subsystem, a thermal power collaborative heat exchange system, a flywheel-CAES switching coupling module and an intelligent control system. The flywheel energy storage subsystem is responsible for millisecond-level frequency modulation response, the compressed air energy storage subsystem provides minute-level stable output, and the flywheel energy storage subsystem and the compressed air energy storage subsystem cooperatively work through an intelligent control system to realize a composite regulation mode of'fast response-high capacity '; a compressed air side is coupled with a thermal power plant turbine steam extraction system, a boiler flue gas system and a condensed water system to improve the energy release efficiency; the flywheel side interacts with a power grid in real time through a bidirectional converter, and rapid frequency support is achieved. The system has the quick response capability and the long-time energy supporting capability, the frequency modulation and peak regulation performance of the thermal power generating unit is remarkably improved, and the system has high engineering popularization value and application prospects.

The invention discloses a capacity evaluation method for flywheel energy storage and storage battery hybrid UPS configuration, and belongs to the technical field of capacitor application and hybrid energy storage systems, and the method comprises the steps: obtaining a preset load fluctuation parameter, a flywheel rotating speed parameter and a real-time charge state parameter of a storage battery, and generating a dynamic load feature vector; according to the dynamic load feature vector, calculating a dynamic coupling parameter of flywheel mechanical inertia and storage battery chemical energy attenuation; based on the dynamic coupling parameter, generating a cooperative capacity distribution weight of the flywheel and the storage battery; according to the cooperative capacity distribution weight, adjusting a preset rectifier duty ratio parameter to obtain an energy storage charging and discharging strategy; and performing simulation verification on the energy storage charging and discharging strategy, and outputting a final capacity evaluation result. A dynamic coupling parameter and a closed-loop simulation verification mechanism are adopted, flywheel inertia and storage battery attenuation characteristics can be accurately adapted, and the energy distribution proportion is optimized to improve power supply quality and prolong the service life of equipment.

The invention relates to the technical field of data center energy storage and power supply, and discloses a flywheel AFE energy storage and power supply system for a data center, which comprises a flywheel energy storage unit, an AFE control module, a hierarchical energy scheduling module, a dynamic balance adjustment module and a feedback optimization module. The flywheel energy storage unit constructs a multi-stage energy buffer topology through a rotating speed monitoring node and a kinetic energy conversion network; the AFE control module realizes steady-state and transient-state control by using a multi-mode switching link of the vector modulation unit and inhibits harmonic waves in combination with the direct-current bus compensation unit; the hierarchical energy scheduling module generates a bus voltage reference strategy through a dynamic coordination model of the master control coordination node, and load power supply priorities are sorted through a dynamic priority distribution unit. The dynamic equalization adjustment module realizes power phase synchronization compensation and modulation frequency correction, and the feedback optimization module corrects a power supply strategy based on a closed loop of a bus harmonic evaluation network. The system improves the power supply stability, efficiency and reliability of the data center.

The invention discloses a power system frequency modulation method and system based on flywheel energy storage auxiliary wind power, a flywheel energy storage system is equivalent to a first-order inertia link, an inertia time constant of the flywheel energy storage system is dynamically adjusted, a virtual damping coefficient is optimized in real time in combination with a fuzzy logic controller, and the stability of power grid frequency is remarkably improved. When the frequency of the power grid fluctuates, the flywheel energy storage system can respond quickly, the frequency modulation power close to the rated frequency can be output in an extremely short time, and the steady-state frequency deviation is strictly controlled in an extremely small range. Meanwhile, the fuzzy logic is used for dynamically correcting the power instruction, and the problem of frequency modulation instruction tracking errors caused by wind power output randomness is effectively solved. Besides, after frequency modulation is finished, the damping coefficient is dynamically adjusted through a fuzzy decision mechanism, the flywheel rotating speed recovery time is greatly shortened, secondary frequency disturbance caused by rotating speed lag is avoided, and the recycling efficiency of flywheel energy storage in a continuous frequency modulation scene is ensured.

The invention relates to the technical field of voltage governance, in particular to a data center transient voltage governance flywheel energy storage system which comprises a disturbance moment identification module, a load sudden change judgment module, a capacity correction distribution module, a scheduling sequence adjustment module and a state change tracking module. And analyzing the voltage curve of the flywheel energy storage monitoring node in each time period. According to the method, the coupling relation between voltage disturbance and load change is synchronously captured through multi-dimensional data, the influence of the server running dynamic state on the flywheel energy state is excavated in real time, the energy distribution structure is adjusted in combination with the friction loss trend, and the flywheel priority is dynamically optimized through load proportion fluctuation and the main loop state. According to the method, node energy fluctuation rapid screening and change tracking are realized, the response strategy of the flywheel energy storage system to short-time voltage disturbance is refined, the pertinence and elasticity of energy storage scheduling in a data center operation scene are improved, and the stability level and risk protection capability of the whole power supply system are enhanced.

The invention relates to the technical field of power systems, and discloses a flywheel energy storage assisted thermal power generating unit collaborative frequency modulation control method, which comprises the following steps: extracting dominant dynamic characteristics based on state matrix eigenvalue analysis through a joint dynamic model, and setting layered optimization time granularity according to the dominant dynamic characteristics; aiming at the difference between the thermal power slow dynamic characteristic and the flywheel fast dynamic characteristic, optimization objective functions of a thermal power layer and a flywheel layer are respectively designed, robust consistency constraint is introduced, and multi-time scale optimization instruction iteration generation is realized through an asynchronous coordination algorithm. The system monitors the frequency change rate of a power grid in real time, dynamically adjusts virtual inertia parameters of the flywheel and generates dynamic compensation power, and finally fuses the coordinated reference instruction and the dynamic compensation amount to form an execution instruction. According to the scheme, the frequency dynamic stability in the new energy power grid frequency modulation process can be remarkably improved, and meanwhile, the frequency modulation equipment loss and the sustainable operation capability of the energy storage system are balanced.

The invention relates to the technical field of power grid side energy storage, in particular to a power grid side flywheel energy storage stationing method considering source grid requirements, and aims to solve the problem of how to improve the adjusting effect of power grid side shared energy storage in the peak period of power utilization according to the source grid requirements. The invention provides a power grid side flywheel energy storage point distribution method considering a source network demand. The point distribution method comprises the following steps: determining pre-site selection data of power grid side shared energy storage according to an energy storage demand of a target area and a topological structure of cable equipment in the target area; acquiring cable equipment corresponding to the corrected site selection data, and calculating an energy storage demand corresponding to the corrected site selection data according to historical electricity consumption of the cable equipment; and obtaining a power supply unit in the target area, planning all the corrected site selection data according to the power supply capability and the energy storage demand of the power supply unit, and obtaining the actual distribution point of the power grid side shared energy storage.

The invention relates to the technical field of power management, in particular to a flywheel energy storage and storage battery hybrid UPS system for a data center, which comprises a load identification module, a disturbance correction module, a scheduling screening module, a time reconstruction module and an instruction updating module. According to the method, the current rotating speed and the output current of the flywheel are obtained, slope change trend analysis is executed, the impact characteristic generated when the load is started can be recognized in advance, and the transient instability risk caused by large-current impact is avoided. And carrying out cross analysis on the original access time sequence of the load and the power disturbance response of the power supply side, so that the load access behavior with concentrated original time sequence and violent current fluctuation is orderly expanded in the time domain. The power supply parameters of the air conditioner group are extracted by the flywheel in the steady-state operation period to serve as the reference, interval adaptation judgment is conducted on the power supply parameters and the operation characteristics of the operation and maintenance equipment to be connected, the equipment with high stability is scheduled preferentially, and the balance and controllability of overall scheduling response are improved.

The invention discloses a power grid frequency modulation method based on flywheel energy storage and electrochemical energy storage. The method comprises the following steps: S1, receiving an AGC instruction issued by an AGC dispatching center; s2, preferentially responding to the frequency modulation demand through flywheel energy storage, and adjusting the rotating speed of the flywheel in real time based on the instantaneous power output capability and the residual electric quantity of the flywheel so as to compensate for the high-frequency small-amplitude power deviation; s3, when the flywheel energy storage power or energy is insufficient, battery energy storage supplements response, the charge and discharge depth of the battery is limited according to the charge state of the battery, and the service life is prolonged; and S4, combining the actual ramp rate of the thermal power generating unit, dynamically distributing the output of the energy storage system, and forming a thermal power-hybrid energy storage combined frequency modulation model. The frequency modulation performance index is improved; through instantaneous response of flywheel energy storage and continuous support of a battery, the Kp value is improved from 3.7 to more than 4.2 by combining a frequency modulation system; and the service life of the battery is prolonged, and the replacement cost and the comprehensive cost are reduced by limiting the charge-discharge depth (the SOC range is 20%-90%) of the lithium battery and reducing the high-frequency charge-discharge times of the lithium battery.

The invention relates to the technical field of electric energy storage, and particularly discloses a flywheel energy storage frequency modulation system and a frequency modulation method.According to the real-time rotating speed, power upper and lower limits and residual energy of each flywheel energy storage unit, the output weight is calculated and iteratively distributed, a preliminary power instruction is generated, and saturation amplitude limiting and vacancy redistribution are executed; and outputting a final power instruction to execute control. When the power of the flywheel energy storage units is saturated or the flywheel energy storage units are in fault off-network, the fault flywheel energy storage units are automatically removed, the vacancy of the flywheel energy storage units is smoothly distributed to the rest flywheel energy storage units again, the output weight of the flywheel energy storage units is recovered by soft start when the fault flywheel energy storage units are recovered, the array output is ensured to be continuous and stable, and the energy consumption of each flywheel energy storage unit is more balanced. And the extreme condition that one flywheel energy storage unit is over-discharged while the other flywheel energy storage unit is almost immovable is avoided, so that overload tripping is avoided, and the service life of equipment is prolonged.

The invention relates to a flywheel energy storage motor structure optimization method and device based on an improved hedera helix algorithm. The method comprises the following steps: acquiring upper and lower limits of slot depth, upper and lower limits of slot width and cogging torque of the flywheel energy storage motor; taking a peak-to-peak value calculation formula of the cogging torque as a target function; each individual is set to comprise two dimensions of groove depth and groove width, the fitness of each individual is a value of an objective function, and an initial population is obtained through cubic chaotic mapping in a solution space; the growth rate and the fitness of each individual are calculated under the current iteration times, and the individual with the minimum fitness is selected as the current optimal individual; calculating the temporary position of the corresponding individual, correcting the temporary position by using the adjustment vector to obtain a corrected position, updating according to the corrected position, and calculating the fitness of each individual after the position is updated; and when iteration is ended, selecting the groove depth and groove width corresponding to the individual with the minimum fitness from the individuals after position updating as optimal solutions of the optimization variables. The method can improve the performance of the flywheel energy storage motor.

The embodiment of the invention provides a hybrid energy storage thermal power generating unit frequency modulation strategy and system based on hierarchical adaptive control, and the strategy comprises the steps: detecting the reserve capacity and hybrid energy storage charge state of a thermal power generating unit in real time, and obtaining an automatic power generation control instruction, obtaining interregional tie line exchange power and system frequency deviation, and calculating a regional control deviation frequency modulation instruction; the outer layer control is based on the relation between the residual energy of the hybrid energy storage system and a hybrid energy storage distribution scaling factor K, and self-adaptive distribution is carried out on a power grid real-time area control deviation frequency modulation instruction between the thermal power generating unit and the hybrid energy storage system; the inner layer control decomposes a regional control deviation signal distributed to the hybrid energy storage system between flywheel energy storage and battery energy storage, and calculates a rated output power instruction of each energy storage; a battery energy storage unit is divided into a charging sub-unit and a discharging sub-unit, and when any sub-unit reaches a state-of-charge boundary, a charging state and a discharging state are switched; and outputting the frequency modulation power instruction to the energy storage converter.

The invention discloses a distributed light storage and charging integrated system, which comprises a photovoltaic power generation unit, an energy storage unit, a charging unit, a power grid interface unit, an energy management controller and a direct current bus, the photovoltaic power generation unit comprises a DC / DC converter, and the photovoltaic power generation unit is connected with the DC bus through the DC / DC converter; the energy storage unit comprises a lithium ion battery pack, a flywheel energy storage device, a bidirectional DC converter and a flywheel controller. The lithium ion battery pack and the flywheel energy storage device are connected to the DC bus through the bidirectional DC converter and the flywheel controller respectively. The charging unit comprises at least one direct-current quick charging pile, at least one alternating-current slow charging pile and a DC / AC inverter, the direct-current quick charging pile is directly connected with the direct-current bus, and the alternating-current slow charging pile is connected with the direct-current bus through the DC / AC inverter; the power grid interface unit comprises an AC / DC converter and is connected with the DC bus through the AC / DC converter. According to the invention, through collaborative design of a modular hardware architecture and an intelligent time-sharing strategy, comprehensive improvement of economy, reliability and functionality of the system is realized.

The invention discloses a dual-motor dual-rotor flywheel energy storage device which comprises a shell which is arranged in a sealed mode. The flywheel is connected with a motor and arranged on the inner wall of the shell, and the flywheel is arranged to be in a split type; the first wheel body is arranged right above the second wheel body, so that the axial thickness of the flywheel is increased, the energy storage capacity of the whole device is improved, meanwhile, the problem of insufficient quenching depth caused by a flywheel with a large axial size can be solved, and the flywheel is arranged into a split type, so that the axial thickness of a forge piece can be reduced, and the hardenability is improved. The two groups of motors are respectively connected with the first wheel body and the second wheel body, so that the heat dissipation areas of the stators and the rotors in the motors are increased, and the problem of heat dissipation caused by the increase of the structural sizes of the stators and the rotors of the motors due to higher motor power is solved.

The invention discloses a subway flywheel energy storage system with a direct-current ice melting function, which comprises a medium-voltage looped network, a contact network, a running rail, a positive bus, a negative bus, a subway rectifier module and a flywheel energy storage module, the subway rectification module is connected with the positive and negative buses. The positive bus is connected with a contact network, and the negative bus is connected with a walking rail; the flywheel energy storage module is connected with the positive bus, the negative bus and the walking rail. The flywheel energy storage module is further connected with the contact net through a circuit breaker QF, and the contact net is connected with the walking rail through a far-end short-circuit switch K3. The invention further discloses an ice melting and energy storage method applying the subway flywheel energy storage system with the direct-current ice melting function. The device has two functions of direct-current ice melting and flywheel energy storage charging and discharging, time division multiplexing is controlled by the two functions through a switch, efficient utilization of equipment is achieved, and the cost performance is improved.

The invention relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage controller for a data center and a control method, and the controller comprises a flywheel rotating speed dynamic regulation and control module, an energy storage and release optimization module, a load balancing evaluation module, a real-time monitoring and feedback module and an overall efficiency evaluation module. According to the invention, energy storage and release can be optimized in real time, the energy utilization rate of the system can be improved, energy storage and release conditions can be accurately judged, control of a driving motor can be optimized, and the driving motor can be timely adjusted and maximized in energy output and storage according to load changes by accurately monitoring the rotating speed of the flywheel and dynamically regulating and controlling the rotating speed of the flywheel; energy conversion efficiency is remarkably improved, energy loss is reduced, stable operation of the system is ensured, a load distribution path is optimized through load balancing, load balance is ensured, control parameters are adjusted through real-time feedback, load matching efficiency is improved, energy consumption is reduced, and the overall efficiency of the flywheel energy storage system is remarkably improved.

The invention discloses a flywheel energy storage system control method for data center computing power load energy recovery, and belongs to the technical field of data center energy management and energy storage control, and the method comprises the steps: obtaining and combining historical and real-time computing power data to generate computing power load data; extracting calculation force load data fluctuation and peak value features to generate feature vectors; analyzing the feature vector by using a prediction model to output computing power load prediction data; energy input and output setting of the flywheel energy storage equipment is optimized according to the prediction data; and adjusting the operation frequency of the flywheel energy storage equipment in real time based on the configuration parameters. Through means of computing power load deep analysis, dynamic trend prediction, energy storage equipment energy optimization, operation parameter feedback control and the like, the method can adapt to the violent change of the computing power load of the data center, capture and utilization of recyclable energy are realized, the operation strategy of the energy storage equipment is optimized, and the energy storage equipment energy utilization rate is improved. And the energy recovery efficiency, the system response speed and the comprehensive energy management efficiency of the data center are remarkably improved.

The utility model discloses a flywheel energy storage device. The flywheel energy storage device comprises a motor housing; the motor stator is arranged in the motor shell and is fixedly connected with the motor shell; a motor rotor; a closed loop is formed in the heat exchange pipe, a cooling working medium circulates in the heat exchange pipe, the heat exchange pipe comprises a first heat exchange pipe and a second heat exchange pipe which are communicated with each other, the first heat exchange pipe is located outside the motor shell, and the second heat exchange pipe penetrates through the motor shell and is located inside the motor stator; and at least part of the second heat exchange tube is arranged adjacent to the motor rotor in the radial direction of the motor stator. Therefore, through the arrangement of the heat exchange tube, continuous heat dissipation of the motor stator is realized, the temperature of one side, adjacent to the motor rotor, of the motor stator in the radial direction is effectively reduced, the heat radiation intensity between the motor rotor and the motor stator is enhanced, the temperature of the motor rotor is reduced, and thus the working performance of the flywheel energy storage equipment is improved.

The present invention provides a flywheel energy storage flux adjustable induction motor and its magnetic adjustment method, wherein the motor comprises two permanent magnets with different coercive forces and a DC magnetic adjustment winding. A square wave pulse is input into the DC magnetic adjustment winding to generate a magnetic adjustment magnetic field, so that the residual magnetism of the low-coercive force permanent magnet changes in magnitude or direction, thereby realizing rapid adjustment of the motor air gap flux. When the motor is working, the DC magnetic adjustment winding is disconnected, and the residual magnetic flux generated by the high-coercive force permanent magnet and the low-coercive force permanent magnet enters the air gap in parallel to provide excitation flux for the motor; when the motor is on standby, a negative square wave pulse is input into the DC magnetic adjustment winding to generate a magnetic adjustment magnetic field that can reversely saturate magnetize the low-coercive force permanent magnet, so that the low-coercive force permanent magnet is reversely magnetized, and the residual magnetic flux of the high-coercive force and low-coercive force permanent magnets is equal in magnitude and opposite in direction, so that the air gap flux is reduced to 0, thereby eliminating standby iron loss. In addition, the DC magnetic adjustment winding can also be used as a backup excitation source to prevent the risk of permanent magnet demagnetization.

The invention relates to the technical field of flywheel energy storage equipment, in particular to a flywheel rotor dynamic balance self-adaptive adjusting method and system based on magnetorheological fluid. The method comprises the steps that the sealing state of a magnetorheological fluid cavity is detected through a pressure sensor, and it is ensured that the pressure in the cavity is stable and free of leakage; the non-contact displacement sensor executes zero calibration, and output signal fluctuation is controlled within a preset range; carrying out no-load test on a current output port of the self-adaptive control module; when the rotating speed rises from a static state to a preset rotating speed value, a sensor of the real-time monitoring module synchronously collects a radial vibration signal of the rotor, decomposes a fundamental frequency vibration component with the same frequency as the rotating speed, and calculates the amplitude and the phase of the unbalance; when the rotating speed is stabilized in a preset rotating speed interval, the self-adaptive control module enters a closed-loop adjusting state, and when an unbalanced phase is calculated according to detection, a corresponding compensation quadrant fan-shaped cavity is locked, and the current of an electromagnetic coil is adjusted; the problem of traditional adjustment lag is solved, and over-compensation and under-compensation under variable working conditions are avoided.

The invention relates to the technical field of ship energy recovery, in particular to a ship docking energy recovery system based on flywheel energy storage and an energy dispatching method. The system comprises an energy capture device, a hydraulic power distributor, a transmission mechanism, a flywheel energy storage device and an energy management and dispatching module. The energy capturing device is responsible for receiving and capturing kinetic energy generated when the ship is in shore, and then the captured kinetic energy is converted into mechanical energy through the hydraulic power distributor. And then, the transmission mechanism transmits the converted mechanical energy to the flywheel energy storage device for storage. The recovered energy can be dynamically allocated and used through the energy management and scheduling module according to the port micro-grid requirement, the port energy utilization rate and the system scheduling flexibility are improved, and energy waste is reduced.

The utility model relates to the technical field of flywheel energy storage, and discloses a vacuum sealing electrode for flywheel energy storage, which comprises a conducting rod and an epoxy resin body arranged outside the conducting rod, a sealing ring is embedded in the left side surface of the epoxy resin body, and a plurality of through holes are formed in the upper surface of the epoxy resin body. Positioning bolts movably penetrate through the interiors of the multiple through holes; the whole body formed by the conducting rod and the epoxy resin body is small in resistance and high in sealing performance, and media inside and outside the electrode are isolated, so that the working current is large, the working voltage is high, and the long-time charging and discharging requirements of the flywheel are met; the epoxy resin body is cured outside the conducting rod, the conducting rod and the epoxy resin body form a whole with certain pressure resistance and sealing performance through the annular sealing groove in the surface of the rod body and the cohesiveness of epoxy resin glue, the sealing effect is good, and the cost is low. A rotation stopping section is processed on the rod body, so that leakage caused by relative rotation of the conducting rod and the epoxy resin body is prevented.

The invention discloses a flywheel energy storage energy scheduling optimization method and system, electronic equipment and a program, and relates to the technical field of flywheel energy storage, and the method comprises the steps: building a coupling model of a flywheel energy storage system and a power grid system; optimizing the coupling model based on a multi-objective optimization function; solving the multi-objective optimization function based on a particle swarm optimization algorithm to obtain a flywheel energy storage charging and discharging power scheduling scheme; and adjusting the charging and discharging power of the flywheel energy storage system based on the flywheel energy storage charging and discharging power scheduling scheme. Through the processing scheme disclosed by the invention, the grid-connected electric energy quality can be effectively improved, and technical support is provided for large-scale renewable energy source access to a power grid.

The invention provides an intelligent power distribution method of an energy storage system, which comprises the steps of acquiring power grid real-time frequency data, load demand power data and energy storage unit state data, and the energy storage system comprises a lithium battery energy storage unit, a super capacitor energy storage unit and a flywheel energy storage unit which are connected to a power grid bus through a power converter. Calculating a power deviation value according to the power grid frequency and the load power data, and determining the power distribution weight of each energy storage unit based on the deviation value and the energy storage unit state data; and generating power instructions of each energy storage unit, and executing the instructions through a power converter to complete power dynamic adjustment. And storing the power deviation value, the power allocation weight of each energy storage unit and the power instruction in a database as logs. The overall performance of the energy storage system can be improved, the frequency stability and the load response capability of the power grid are enhanced, the service life of the energy storage unit is prolonged, and the operation safety of the system is improved.

The utility model discloses a power generation device combining gravity and flywheel energy storage and a power generation method of the power generation device, relates to the technical field of power generation technologies, and solves the technical problems of high construction cost and lower economic benefits in the existing technical scheme. A potential energy storage unit is installed in the main stand column in a sliding mode, a traction machine is installed at the upper end of the main stand column, the driving end of the traction machine is connected to the upper end of the potential energy storage unit through a traction rope, a main shaft is installed in the main stand column in a rotating mode, and a friction wheel is fixedly installed at one end of the main shaft. The gravity and flywheel technology is mainly utilized, the investment of materials and equipment is reduced, and the economical efficiency is better; the electricity price difference can be effectively utilized, and higher economic return can be realized; stable power output can be provided, and the power grid stability is enhanced; the equipment is relatively simple in design and easy to assemble and maintain, and manpower and material resource cost is saved.