Method, apparatus, device and medium for determining flywheel capacity

Abstract

The present application discloses a method, device, equipment and medium for determining the flywheel capacity in the field of power generation technology, which is applied to a power generation system including a flywheel system and a thermal power unit. Obtain the equipment parameters of the power generation system and the simulated automatic generation control (AGC) instruction. According to the target load and the target regulation rate indicated by the simulated AGC instruction, simulate the operation of the power generation system based on the equipment parameters to obtain the simulated operation result of the power generation system. Analyze the simulated operation result to determine the number of times the flywheel system is operationally restricted. If the number of operationally restricted times meets the operation conditions, use the flywheel capacity to be adjusted as the flywheel capacity of the flywheel system. If the number of operationally restricted times does not meet the operation conditions, adjust the flywheel capacity to be adjusted and repeat the simulation operation and subsequent operations. In this way, the flywheel capacity that meets the operation requirements of the power generation system can be determined more accurately, which is convenient for constructing or adjusting the power generation system using the determined flywheel capacity, and reducing the construction cost of the power generation system.

Description

Technical Field

[0001] This application relates to the field of power generation technology, and specifically to a method, device, equipment and medium for determining the flywheel capacity. Background Art

[0002] With the development of new energy power generation technology, more and more new energy power generation systems are incorporated into the power grid to provide electric energy. New energy power generation technology has the characteristics of intermittency, volatility and randomness, and a thermal power generation system is required to maintain the stable operation of the power grid. The thermal power generation system obtains an Automatic Generation Control (AGC) instruction, and adjusts the power generation power of its own thermal power unit according to the target load indicated in the AGC instruction to maintain the balance between the power and load of the power grid. However, the adjustment process of the thermal power unit is complex, with the characteristics of large delay and large inertia, and it is difficult to meet the requirements of response time and power adjustment rate.

[0003] Currently, a flywheel system is used as an energy storage system to operate in combination with a thermal power unit. Flywheel energy storage technology belongs to physical energy storage technology, and the energy storage medium is a flywheel. The flywheel system has the characteristics of fast response speed, long life and low maintenance workload, which is beneficial to improving the overall power adjustment rate of the power generation system and reducing the response time. However, it is difficult to determine a more appropriate flywheel capacity for the flywheel system so that the flywheel system can support the adjustment requirements of the thermal power unit. Summary of the Invention

[0004] In view of this, this application provides a method, device, equipment and medium for determining the flywheel capacity, which can more accurately determine the flywheel capacity that meets the power adjustment requirements of the power generation system.

[0005] The technical solutions provided by this application are as follows:

[0006] In a first aspect, this application provides a method for determining the flywheel capacity. The method is applied to a power generation system including a flywheel system and a thermal power unit, and the method includes:

[0007] Obtain the equipment parameters of the power generation system and a simulated Automatic Generation Control (AGC) instruction. The equipment parameters include the power parameters of the thermal power unit, the power parameters and power quantity parameters of a single flywheel, and the initial value of the flywheel capacity to be adjusted of the flywheel system. The simulated AGC instruction is used to indicate the target load to which the total power of the power generation system needs to be adjusted during the adjustment period;

[0008] Based on the target load and the target regulation rate indicated by the simulated AGC instruction, simulate the operation of the power generation system based on the equipment parameters to obtain the simulated operation results of the power generation system, where the simulated operation results include the total power of the power generation system and the unit power of the thermal power unit within the regulation time period;

[0009] Analyze the simulated operation results to determine the number of times the flywheel system is operationally restricted;

[0010] If the number of times of operational restriction meets the operation conditions, use the flywheel capacity to be adjusted as the flywheel capacity of the flywheel system;

[0011] If the number of times of operational restriction does not meet the preset operation conditions, adjust the flywheel capacity to be adjusted, and return to execute the operation of simulating the power generation system based on the target load and the target regulation rate indicated by the simulated AGC instruction, obtaining the simulated operation results of the power generation system and subsequent steps.

[0012] In a possible implementation manner, the operation of simulating the power generation system based on the equipment parameters includes:

[0013] Obtain the current unit power of the thermal power unit and the current target load indicated by the simulated AGC instruction at the same moment within the regulation time period;

[0014] If the absolute value of the difference between the current unit power and the current target load is less than or equal to the first difference threshold, determine that the thermal power unit is in a stable operation state and keep the total power of the power generation system stable;

[0015] If the absolute value of the difference between the current unit power and the current target load is greater than the first difference threshold, and the absolute value of the difference between the current target load and the target load before this load change is greater than or equal to the second difference threshold, determine that the thermal power unit is in a dynamic operation state, and adjust the unit power of the thermal power unit and the flywheel power of the flywheel system to reduce the absolute value of the difference between the total power of the power generation system and the target load.

[0016] In a possible implementation manner, the keeping the total power of the power generation system stable includes:

[0017] Obtain the state of charge of the flywheel system;

[0018] If the state of charge of the flywheel system does not belong to the preset state of charge range, adjust the power of the thermal power unit to increase or decrease the state of charge of the flywheel system, so that the absolute value of the difference between the state of charge of the flywheel system and the extreme value of the preset state of charge range decreases, or belongs to the preset state of charge range, and keep the total power of the power generation system stable.

[0019] In a possible implementation manner, the analyzing the simulation operation result to determine the number of times the flywheel system is operationally restricted includes:

[0020] Using the simulation operation result of the thermal power unit in the dynamic operation state to determine the number of times the flywheel system is operationally restricted.

[0021] In a possible implementation manner, the determining the number of times the flywheel system is operationally restricted includes:

[0022] Determine one or more of the number of times of power restriction and the number of times of capacity restriction.

[0023] In a possible implementation manner, the power restriction is determined by the following method:

[0024] Determine that in the process of adjusting the total power of the power generation system once, the target power of the flywheel system required to complete the power adjustment is greater than the maximum power of the flywheel system;

[0025] The capacity restriction is determined by the following method:

[0026] Determine that in the process of adjusting the total power of the power generation system once, the first energy required to adjust the power generation system is greater than the second energy that the flywheel system can provide.

[0027] In a possible implementation manner, the simulated AGC instruction is the AGC normal mode.

[0028] In a second aspect, the present application provides a device for determining the flywheel capacity. The device is applied to a power generation system including a flywheel system and a thermal power unit. The device includes:

[0029] An acquisition unit, configured to acquire the device parameters of the power generation system and a simulated automatic generation control (AGC) instruction. The device parameters include the power parameters of the thermal power unit, the power parameters and power quantity parameters of a single flywheel, and the initial value of the flywheel capacity to be adjusted of the flywheel system. The simulated AGC instruction is used to indicate the target load to which the total power of the power generation system needs to be adjusted within an adjustment time period;

[0030] A simulation operation unit, configured to simulate the operation of the power generation system based on the device parameters according to the target load and the target regulation rate indicated by the simulated AGC instruction, and obtain the simulation operation result of the power generation system. The simulation operation result includes the total power of the power generation system and the unit power of the thermal power unit within the regulation time period;

[0031] An analysis unit, configured to analyze the simulation operation result and determine the number of times the flywheel system is operationally restricted;

[0032] A determination unit, configured to use the flywheel capacity to be adjusted as the flywheel capacity of the flywheel system if the number of times of operation restriction meets the operation condition;

[0033] An adjustment unit, configured to adjust the flywheel capacity to be adjusted and call and execute the simulation operation unit and subsequent units if the number of times of operation restriction does not meet the preset operation condition.

[0034] In a possible implementation manner, the simulation operation unit, configured to simulate the operation of the power generation system based on the device parameters, includes:

[0035] The simulation operation unit is configured to obtain the current unit power of the thermal power unit and the current target load indicated by the simulated AGC instruction at the same moment within the regulation time period; if the absolute value of the difference between the current unit power and the current target load is less than or equal to the first difference threshold, it is determined that the thermal power unit is in a stable operation state, and the total power of the power generation system is kept stable; if the absolute value of the difference between the current unit power and the current target load is greater than the first difference threshold, and the absolute value of the difference between the current target load and the target load before this load change is greater than or equal to the second difference threshold, it is determined that the thermal power unit is in a dynamic operation state, and the unit power of the thermal power unit and the flywheel power of the flywheel system are adjusted so that the absolute value of the difference between the total power of the power generation system and the target load is reduced.

[0036] In a possible implementation manner, the simulation operation unit, configured to keep the total power of the power generation system stable, includes:

[0037] The simulation operation unit is configured to obtain the state of charge of the flywheel system; if the state of charge of the flywheel system does not belong to the preset state of charge range, the power of the thermal power unit is adjusted to increase or decrease the state of charge of the flywheel system, so that the absolute value of the difference between the state of charge of the flywheel system and the extreme value of the preset state of charge range is reduced, or belongs to the preset state of charge range, and the total power of the power generation system is kept stable.

[0038] In a possible implementation, the analysis unit is specifically configured to determine the number of times the operation of the flywheel system is restricted by using the simulation operation result of the thermal power unit in the dynamic operation state.

[0039] In a possible implementation, the analysis unit for determining the number of times the operation of the flywheel system is restricted includes:

[0040] The analysis unit is configured to determine one or more of the number of times of power restriction and the number of times of capacity restriction.

[0041] In a possible implementation, the power restriction is determined in the following manner:

[0042] Determine that in the process of adjusting the total power of the power generation system once, the target power of the flywheel system required to complete the power adjustment is greater than the maximum power of the flywheel system;

[0043] The capacity restriction is determined in the following manner:

[0044] Determine that in the process of adjusting the total power of the power generation system once, the first energy required to adjust the power generation system is greater than the second energy that the flywheel system can provide.

[0045] In a possible implementation, the simulated AGC instruction is the AGC normal mode.

[0046] In a third aspect, the present application provides a device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for determining the flywheel capacity as described in any one of the first aspects is implemented.

[0047] In a fourth aspect, the present application provides a computer-readable storage medium, in which instructions are stored. When the instructions are run on a terminal device, the terminal device is caused to execute the method for determining the flywheel capacity as described in any one of the first aspects.

[0048] Thus, the present application has the following beneficial effects:

[0049] The present application provides a method, apparatus, device, and medium for determining the flywheel capacity, which are applied to a power generation system including a flywheel system and a thermal power unit. In this method, the equipment parameters of the power generation system and the simulated automatic generation control (AGC) instruction are obtained. According to the target load and the target adjustment rate indicated by the simulated AGC instruction, the operation of the power generation system is simulated based on the equipment parameters to obtain the simulated operation result of the power generation system. In this way, the operation process of the power generation system can be simulated using the flywheel capacity to be adjusted of the flywheel system included in the equipment parameters. Analyze the simulated operation result to determine the number of times the flywheel system is operationally restricted. If the number of times of operationally restricted meets the operation condition, the flywheel capacity that meets the operation requirements of the power generation system can be determined, and the flywheel capacity to be adjusted is used as the flywheel capacity of the flywheel system. If the number of times of operationally restricted does not meet the operation condition, adjust the flywheel capacity, and then perform the operation simulation of the power generation system again, determine the number of times of operationally restricted, and judge whether the number of times of operationally restricted meets the operation condition. Repeat the operation in this way until the number of times of operationally restricted of the power generation system meets the operation condition. By adopting the method of simulated operation and the method of iteratively adjusting the flywheel capacity, the flywheel capacity that meets the operation requirements of the power generation system can be determined more accurately, which is convenient for constructing or adjusting the power generation system using the determined flywheel capacity, reducing the construction cost of the power generation system, and giving full play to the energy storage characteristics of the flywheel system. Description of the Drawings

[0050] Figure 1 Schematic diagram of a method for determining the flywheel capacity provided by an embodiment of the present application;

[0051] Figure 2 Schematic diagram of a simulated AGC instruction in the R mode provided by an embodiment of the present application;

[0052] Figure 3 Schematic diagram of a simulated AGC instruction and a simulated operation result provided by an embodiment of the present application;

[0053] Figure 4 Schematic diagram of a part of the simulated AGC instruction and the simulated operation result provided by an embodiment of the present application;

[0054] Figure 5 Schematic diagram of the number of flywheels corresponding to different operation conditions provided by an embodiment of the present application;

[0055] Figure 6 Schematic diagram of the operating power and capacity of a flywheel system provided by an embodiment of the present application;

[0056] Figure 7 Schematic diagram of the structure of a device for determining the flywheel capacity provided by an embodiment of the present application. Detailed Embodiments

[0057] To facilitate the understanding and explanation of the technical solutions provided by the embodiments of the present application, the background art of the present application will be described first below.

[0058] The flywheel system is an energy storage system constructed based on flywheel energy storage technology. The energy storage medium of the flywheel system is the flywheel. Flywheel energy storage technology adopts a pure mechanical energy storage method, which has the characteristics of fast response speed. The response time can reach the millisecond level, and it is more suitable for the application scenario of power regulation of thermal power units. In addition, the flywheel system has a long service life, can adapt to the frequent frequency modulation actions of the power system, has little impact on the environment, no fire hazard, and little maintenance work during the operation cycle.

[0059] Currently, aiming at the problem that the overall rate of the regulation process of thermal power units is slow and it is difficult to meet the requirements of the power grid for the fast regulation and flexible operation of thermal power units, the flywheel system is used as an energy storage system and operates in combination with thermal power units to give full play to the advantages of the flywheel system, such as fast response speed, wide regulation range, and little maintenance work, improve the response speed of the regulation of the power generation system, enhance the regulation performance of the power generation system under all working conditions, and further improve the operation economy and safety of the unit and the operation safety margin of the power grid.

[0060] Before using the flywheel system as an energy storage system to participate in the power regulation of thermal power units, it is necessary to determine the flywheel capacity of the flywheel system. Excessive flywheel capacity will result in some capacity not being put into use all the time, causing investment losses and resource waste. Insufficient flywheel capacity will lead to insufficient frequency modulation support ability provided by the flywheel system and cannot meet the requirements of thermal power units. Currently, there is a lack of a method to determine a more appropriate flywheel capacity.

[0061] Based on this, an embodiment of the present application provides a method for determining the flywheel capacity, which is applied to a power generation system including a flywheel system and a thermal power unit. In this method, the equipment parameters of the power generation system and the simulated automatic generation control (AGC) instruction are obtained. According to the target load and the target adjustment rate indicated by the simulated AGC instruction, the operation of the power generation system is simulated based on the equipment parameters, and the simulated operation result of the power generation system is obtained. In this way, the operation process of the power generation system can be simulated by using the flywheel capacity to be adjusted of the flywheel system included in the equipment parameters. Analyze the simulated operation result to determine the number of times the operation of the flywheel system is restricted. If the number of times of restricted operation meets the operation conditions, the flywheel capacity that meets the operation requirements of the power generation system can be determined, and the flywheel capacity to be adjusted is used as the flywheel capacity of the flywheel system. If the number of times of restricted operation does not meet the operation conditions, adjust the flywheel capacity, and then perform the operation simulation of the power generation system again, determine the number of times of restricted operation, and judge whether the number of times of restricted operation meets the operation conditions. Repeat this operation until the number of times of restricted operation of the power generation system meets the operation conditions. By adopting the method of simulated operation and the method of iteratively adjusting the flywheel capacity, the flywheel capacity that meets the operation requirements of the power generation system can be determined more accurately, which is convenient for constructing or adjusting the power generation system by using the determined flywheel capacity, reducing the construction cost of the power generation system, and giving full play to the energy storage characteristics of the flywheel system.

[0062] To facilitate the understanding of the technical solution provided by the embodiment of the present application, the method for determining the flywheel capacity provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

[0063] First of all, it should be noted that the method for determining the flywheel capacity provided by the embodiment of the present application is applied to a power generation system including a flywheel system and a thermal power unit. Among them, the flywheel system, as the energy storage system of the power generation system, operates in combination with the thermal power unit to supplement or extract the power of the thermal power unit, so as to realize the adjustment of the total power of the power generation system. The power adjustment process can also be called the variable load process.

[0064] The method for determining the flywheel capacity provided by the embodiment of the present application can be applied to a power generation system without a flywheel system created, or a power generation system that needs to adjust the flywheel capacity of the flywheel system.

[0065] See Figure 1 As shown in the figure, this figure is a schematic diagram of a method for determining the flywheel capacity provided by the embodiment of the present application. This figure includes the following steps:

[0066] S101: Obtain the equipment parameters of the power generation system and the simulated automatic generation control (AGC) instruction.

[0067] The device parameters of the obtained power generation system are used to simulate the operation of the power generation system. The device parameters of the power generation system include the power parameters of the thermal power unit, the power parameters and power quantity parameters of a single flywheel, and the initial value of the flywheel capacity to be adjusted in the flywheel system.

[0068] As an example, the power parameters of the thermal power unit include the rated power of the thermal power unit. The power parameters of a single flywheel include the maximum power of a single flywheel. The power quantity parameters of a single flywheel include the maximum value of the state of charge and the minimum value of the state of charge of the flywheel.

[0069] The flywheel capacity included in the flywheel system is the number of flywheels included in the flywheel system. The flywheel capacity to be adjusted in the flywheel system is the flywheel capacity that needs to be adjusted. The initial value of the flywheel capacity to be adjusted is a preset value. As an example, the initial value of the flywheel capacity to be adjusted is 1. As another example, the initial value of the flywheel capacity to be adjusted is the common value of the flywheel capacity under normal circumstances. The common value of the flywheel capacity can be pre-configured based on the experience of the staff.

[0070] The simulated AGC instruction is used to indicate the target load to which the total power of the power generation system needs to be adjusted during the adjustment time period. The embodiments of the present application do not limit the generation method of the simulated AGC instruction. As an example, the simulated AGC instruction is the AGC instruction in a typical adjustment scenario. As another example, the simulated AGC instruction is generated based on the historical AGC instruction.

[0071] There can be multiple target loads indicated by the simulated AGC instruction, that is, there are multiple load changes during the adjustment time period. In this way, the target load can be adjusted multiple times during the adjustment time period.

[0072] In a possible implementation manner, the R (PROPR) mode is used to simulate the operation of the power generation system. The R mode is the normal mode of AGC. The R mode has the highest input standard, the highest compensation, and the highest load response requirement for the power generation system. In the R mode, the load of the power generation system will be adjusted frequently and significantly. In the R mode, the simulated AGC instruction adjusts the target load more frequently than the adjustment frequency threshold during the adjustment time period. The adjustment frequency threshold is, for example, once every 10 minutes. As an example, see Figure 2 As shown, this figure is a schematic diagram of a simulated AGC instruction in the R mode provided by the embodiments of the present application. The simulated AGC instruction is the AGC instruction on a typical date. The maximum value of the target load indicated by the simulated AGC instruction is 330 MW, the minimum value is 165 MW, the maximum amplitude of the load increase instruction is 26.97 MW, and the maximum amplitude of the load decrease instruction is -27.97 MW.

[0073] Simulating the operation of the power generation system in the R mode is beneficial to determining the flywheel capacity that meets the requirements of frequent load regulation and obtaining the flywheel capacity that meets higher demands. The flywheel capacity determined in the R mode can support the normal use of other modes and expand the application scenarios of the determined flywheel capacity.

[0074] S102: According to the target load and target regulation rate indicated by the simulated AGC command, simulate the operation of the power generation system based on the equipment parameters to obtain the simulated operation results of the power generation system. The simulated operation results include the total power of the power generation system and the unit power of the thermal power unit during the regulation time period.

[0075] The target load indicated by the simulated AGC command is the load that the total power of the power generation system needs to reach. The target regulation rate is the rate at which the power of the power generation system is required to be regulated. Adjusting the power of the power generation system according to the AGC command has three indicators: response time, regulation rate, and regulation accuracy. For the flywheel system, it can meet the requirements of fast response time and high regulation accuracy, so the regulation rate needs to be considered key. The target regulation rate can be obtained based on the preset regulation requirement information of the power generation system. As an example, the upper limit of the target regulation rate is 3% Pe / min. 3% Pe / min means adjusting 3% of the rated load per minute.

[0076] The target load indicated by the simulated AGC command is the regulation target of the total power of the power generation system, and the target regulation rate indicates the regulation speed of the total power of the power generation system. According to the target load indicated by the simulated AGC command, adopt the regulation speed of the total power of the power generation system indicated by the target regulation rate to simulate the operation process of the power generation system.

[0077] The operation process of the power generation system is simulated based on the equipment parameters of the power generation system. In one possible implementation, a virtual power generation system model is established based on the equipment parameters of the power generation system. The power generation system model can simulate the operation of the power generation system and has the function of adjusting the power generation according to the simulated AGC command. In another possible implementation, calculate the power of the power generation system adjusted according to the simulated AGC command and the target regulation rate using the equipment parameters of the power generation system.

[0078] During the process of simulating the operation of the power generation system, in order to facilitate the adjustment of the power generation system, the operation state of the thermal power unit can be determined, and then a power generation system adjustment strategy corresponding to the operation state of the thermal power unit can be adopted to control the operation of the power generation system. As an example, the embodiments of the present application provide a specific implementation manner for simulating the operation of the power generation system based on equipment parameters. For details, please refer to the following text.

[0079] It should be noted that during the first simulation of the operation of the power generation system using the equipment parameters, the initial value of the flywheel capacity to be adjusted in the flywheel system included in the equipment parameters is used to simulate the operation of the flywheel system. During the non-first simulation of the operation of the power generation system using the equipment parameters, the adjusted flywheel capacity to be adjusted is used to simulate the operation of the flywheel system.

[0080] Simulating the operation of the power generation system can obtain the simulated operation results of the power generation system. The simulated operation results of the power generation system include the total power of the power generation system and the unit power of the thermal power unit during the adjustment time period. The total power of the power generation system can also be referred to as the combined power generation load of the power generation system. The unit power can also be referred to as the unit load.

[0081] As an example, the simulated operation results can be represented by an image. For example, see Figure 3 As shown, this figure is a schematic diagram of a simulated AGC instruction and simulated operation results provided by an embodiment of the present application. This schematic diagram is generated with a sampling time of 11 seconds. Further, Figure 3 For the specific schematic diagram corresponding to the part of time 0 - 1400 in Figure 4 See as shown.

[0082] S103: Analyze the simulated operation results to determine the number of times the flywheel system is operationally restricted.

[0083] After obtaining the simulated operation results, analyze the simulated operation results. Determine the number of times the flywheel system is operationally restricted during the current simulation of the operation of the power generation system. The number of times the flywheel system is operationally restricted refers to the number of abnormal times when the flywheel system cannot normally cooperate with the thermal power unit to achieve power regulation. In some possible implementation manners, for each power adjustment process, that is, each load change process, use the simulated operation results to determine whether there is an operational restriction, and then determine the number of times of operational restriction.

[0084] The embodiments of the present application do not limit the types of operational restrictions of the flywheel system. The change amplitude of the target load indicated by the simulated AGC instruction has requirements for both the power and the amount of electricity of the flywheel system. The greater the amplitude of a single load change indicated by the simulated AGC instruction and the longer the duration of the load change process, the higher the peak power and the more electricity required by the flywheel system. In one possible implementation manner, the number of times the flywheel system is operationally restricted includes one or more of the number of times of power restriction and the number of times of capacity restriction. Power restriction means that the power of the flywheel system cannot support the target power of the flywheel system required to complete power regulation during this load change process. Capacity restriction means that the first energy required by the power generation system during this load change process is greater than the second energy that the flywheel system can provide. As an example, the embodiments of the present application provide methods for determining power restriction and determining capacity restriction. For details, please refer to the following text.

[0085] S104: If the number of restricted operations meets the operating conditions, use the flywheel capacity to be adjusted as the flywheel capacity of the flywheel system.

[0086] Determine whether the number of restricted operations meets the preset operating conditions. The operating conditions can be set based on the actual operating requirements of the power generation system. For example, the operating condition is that the number of restricted operations is less than or equal to a threshold number. Another example is that the operating condition is the ratio of the number of restricted operations to the number of adjustment power operations, that is, the ratio of the number of restricted operations to the number of load change operations, which is less than or equal to a ratio threshold.

[0087] If the number of restricted operations meets the operating conditions, it indicates that the flywheel capacity to be adjusted of the current flywheel system meets the operating requirements of the power generation system. Use the flywheel capacity to be adjusted for participating in the operation of the simulated power generation system as the flywheel capacity of the flywheel system to determine the flywheel capacity of the flywheel system.

[0088] S105: If the number of restricted operations does not meet the operating conditions, adjust the flywheel capacity to be adjusted, and return to execute S102 and subsequent steps.

[0089] If the number of restricted operations does not meet the operating conditions, it indicates that the flywheel capacity to be adjusted for participating in the operation of the simulated power generation system does not meet the operating requirements of the power generation system. Adjust the flywheel capacity to be adjusted.

[0090] The embodiments of the present application do not limit the method of adjusting the flywheel capacity to be adjusted. As an example, each time the flywheel capacity to be adjusted is adjusted by a capacity adjustment step based on the current flywheel capacity to be adjusted. The capacity adjustment step can be set based on the requirement of adjusting the flywheel capacity to be adjusted. The capacity adjustment step is, for example, a fixed value, or the capacity adjustment step can be determined based on the difference between the current number of restricted operations and the target of the adjusted number of restricted operations indicated by the operating conditions. For example, a pre-trained artificial intelligence model is used to determine the capacity adjustment step. The artificial intelligence model can process the input number of restricted operations and operating conditions and output the capacity adjustment step.

[0091] Taking the capacity adjustment step as a fixed value as an example, the capacity adjustment step is 1 unit. Taking the initial value of the flywheel capacity to be adjusted as 1, if the number of restricted operations obtained by simulating the operation of the power generation system with the flywheel capacity to be adjusted of 1 does not meet the operating conditions, then perform an adjustment operation of increasing the flywheel capacity to be adjusted by 1, and the adjusted flywheel capacity to be adjusted is 2.

[0092] The above adjustment method is to increase the capacity of the flywheel to be adjusted. In some other possible implementation manners, adjusting the capacity of the flywheel to be adjusted can also be to reduce the capacity of the flywheel to be adjusted, so as to reduce resource waste on the basis of meeting the operating conditions. For example, the capacity of the flywheel to be adjusted participating in this simulation is 35 units, and the ratio of the number of times of operation restriction to the number of times of regulation power obtained from this simulation is 95%. The operating conditions are, for example, that the ratio of the number of times of operation restriction to the number of times of regulation power is 89%-91%. Specifically adjusting the capacity of the flywheel to be adjusted is to reduce the capacity of the flywheel to be adjusted. For example, the capacity of the flywheel to be adjusted participating in this simulation is reduced by 5 units, and the adjusted capacity of the flywheel to be adjusted is 30 units.

[0093] After obtaining the adjusted capacity of the flywheel to be adjusted, execute S102 and subsequent steps again. Repeat executing S102 and subsequent steps until the number of times of operation restriction meets the operating conditions, and then execute S104 to end the determination process of the flywheel capacity this time. In this way, multiple adjustments to the flywheel capacity can be realized, and the obtained flywheel capacity is relatively accurate and can meet the operating requirements of the power generation system.

[0094] As an example, taking the scenario of simulating the operation of the power generation system as described above Figures 2 - 4 as an example, refer to Figure 5 shown in the figure. The embodiment of the present application provides a schematic diagram of the number of flywheels corresponding to different operating conditions. Among them, the operating condition is the variable load completion rate, that is, the ratio of the number of times of operation restriction to the number of times of regulation power. In the R mode, to reach an 85% variable load completion rate, a flywheel system including 26 flywheels is required; to reach a 90% variable load completion rate, a flywheel system including 31 flywheels is required; to reach a 95% variable load completion rate, a flywheel system including 40 flywheels is required. When the number of flywheels is small, the operation restriction is mainly affected by the maximum output power limitation. As the number of flywheels increases, the capacity limitation gradually becomes the main influencing factor for flywheel restriction.

[0095] Based on the relevant content of S101-S105 above, by using the equipment parameters of the power generation system and the simulated AGC command, on the basis of considering the energy storage characteristics of the flywheel, simulate the operation of the power generation system, and adjust the flywheel capacity according to the number of times of operation restriction of the flywheel system that appears during the simulated operation process. In this way, the flywheel capacity that meets the operating requirements of the power generation system can be determined relatively accurately, which is convenient for constructing or adjusting the power generation system, reducing the construction cost of the power generation system, giving full play to the energy storage characteristics of the flywheel system, and improving the use efficiency of the flywheel system as an energy storage system.

[0096] During the operation of the power generation system, the operating state of the thermal power unit can be divided into a stable operating state and a dynamic operating state according to the operating conditions of the thermal power unit. The stable operating state refers to the operating state of the thermal power unit when the unit power is equal to or close to the target load. When in the stable operating state, there is no need to make a large adjustment to the total power of the power generation system, and the stable operating state of the power generation system is maintained. The dynamic operating state refers to the operating state of the thermal power unit when the unit power is not equal to the target load and the load difference of the variable load indicated by the simulated AGC command is large. When in the dynamic operating state, a large adjustment to the total power of the power generation system is required to make the total power of the power generation system close to the target load state. Determining the operating state of the thermal power unit is beneficial to determining further adjustment strategies for the power generation system and helps to simulate the real operating process of the power generation system.

[0097] As an example, the embodiment of the present application provides a specific implementation method for simulating the operation of a power generation system based on equipment parameters, including the following steps:

[0098] A1: Obtain the current unit power of the thermal power unit and the current target load indicated by the simulated AGC command at the same moment within the adjustment time period.

[0099] Obtain the current unit power of the thermal power unit and the current target load indicated by the simulated AGC command corresponding to a certain moment within the adjustment time period. It should be noted that at the initial moment, the current unit power of the thermal power unit is the initial value, and at non-initial moments, the current unit power of the thermal power unit is obtained by adjusting the power generation system based on the target load and the target adjustment rate indicated by the simulated AGC command before the non-initial moment.

[0100] Using the current unit power of the thermal power unit and the current target load indicated by the simulated AGC command, the operating state of the thermal power unit at this moment can be determined, which is convenient for determining the adjustment method for the power generation system at subsequent moments.

[0101] A2: If the absolute value of the difference between the current unit power and the current target load is less than or equal to the first difference threshold, it is determined that the thermal power unit is in a stable operating state, and the total power of the power generation system is maintained stable.

[0102] Calculate the difference between the current unit power and the current target load. The difference between the current unit power and the current target load can reflect the subsequent adjustment direction of the power generation system.

[0103] If the absolute value of the difference between the current unit power and the current target load is less than or equal to the first difference threshold, it indicates that the current unit power of the thermal power unit can already meet the requirements of the current target load indicated by the simulated AGC command, and there is no need to make a large-scale power adjustment to the thermal power unit. It is determined that the thermal power unit is in a stable operating state. The first difference threshold is a preset determination threshold for the equality of the unit power and the target load. As an example, the first difference threshold is 0.1 megawatt (MW).

[0104] When it is determined that the thermal power unit is in a stable operating state, keep the total power of the power generation system stable until the next load change for adjustment.

[0105] A3: If the absolute value of the difference between the current unit power and the current target load is greater than the first difference threshold, and the absolute value of the difference between the current target load and the target load before this load change is greater than or equal to the second difference threshold, it is determined that the thermal power unit is in a dynamic operating state, and adjust the unit power of the thermal power unit and the flywheel power of the flywheel system so that the difference between the total power of the power generation system and the target load decreases.

[0106] If the absolute value of the difference between the current unit power and the current target load is greater than the first difference threshold, it indicates that the current unit power of the thermal power unit cannot meet the requirements of the target load indicated by the simulated AGC command and needs to be adjusted. Moreover, if the absolute value of the difference between the current target load and the target load before this load change is greater than or equal to the second difference threshold, it indicates that the adjusted load for this load change is relatively large and a large-scale power adjustment to the power generation system is required. As an example, the second difference threshold is 3.3 MW.

[0107] It is determined that the thermal power unit is in a dynamic operating state. Adjust the unit power of the thermal power unit and the flywheel power of the flywheel system. The adjustment target is to make the total power of the power generation system close to the target load, that is, to reduce the absolute value of the difference between the total power of the power generation system and the target load. The adjustment method for the unit power of the thermal power unit and the flywheel power of the flywheel system can be determined based on the pre-designed adjustment method of the power generation system.

[0108] When the thermal power unit is in a dynamic operating state, an abnormality of operation limitation may occur. As an example, use the simulated operation results of the thermal power unit in the dynamic operating state to determine the number of times of operation limitation of the flywheel system. In this way, there is no need to use all the simulated operation results to calculate the number of times of operation limitation, reducing the calculation amount of calculating the number of times of operation limitation.

[0109] In addition, when the thermal power unit is in a stable operation state, the state of charge (SOC) of the flywheel system can also be adjusted, which helps the subsequent power regulation process. An embodiment of the present application provides a specific implementation for maintaining the total power stability of the power generation system, including the following steps:

[0110] B1: Obtain the state of charge of the flywheel system.

[0111] In some possible implementation manners, the simulation operation result can also include the state of charge of the flywheel system. At the initial moment of simulating the operation of the power generation system, the state of charge of the flywheel system is the initial value. At non-initial moments, the state of charge of the flywheel system is obtained by adjusting the power generation system based on the target load indicated by the simulated AGC command and the target regulation rate before the non-initial moment.

[0112] Taking the above Figures 2 - 4 scenario of simulating the operation of the power generation system as an example, as shown in Figure 6 the figure is a schematic diagram of the operating power and capacity of a flywheel system provided by an embodiment of the present application.

[0113] B2: If the state of charge of the flywheel system does not belong to the preset state of charge range, adjust the power of the thermal power unit to increase or decrease the state of charge of the flywheel system, so that the absolute value of the difference between the state of charge of the flywheel system and the extreme value of the preset state of charge range decreases, or belongs to the preset state of charge range, and keep the total power of the power generation system stable.

[0114] The preset state of charge range is a range that facilitates subsequent power regulation by the flywheel system and the thermal power unit together. The preset state of charge range can be the middle range of the value range of the state of charge. As an example, taking the value range of the state of charge as 0 - 100% as an example, the preset state of charge range is 48% - 52%. A state of charge of 48% - 52% is convenient for subsequent supplementing the power of the thermal power unit and also convenient for subsequent storing the power of the thermal power unit.

[0115] If the state of charge of the flywheel system does not belong to the preset state of charge range, then during the process of the stable operation of the thermal power unit, adjust the state of charge of the flywheel system so that the absolute value of the difference between the state of charge of the flywheel system and the extreme value of the preset state of charge range decreases, or belongs to the preset state of charge range, and during the process of adjusting the state of charge of the flywheel system, keep the total power of the power generation system stable.

[0116] Specifically, according to the difference between the state of charge of the flywheel system and the extreme value of the preset state of charge range, adjust the power of the thermal power unit to adjust the state of charge of the flywheel system.

[0117] Taking the above preset state of charge range of 48%-52% as an example, the following introduces two possible implementation methods for adjusting the power of a thermal power unit to adjust the state of charge of the flywheel system.

[0118] First: The state of charge of the flywheel system is greater than 52%.

[0119] Control the unit power of the thermal power unit to decrease at a rate of 1.5%Pe / min. The lack of the total power of the power generation system is supplemented by the flywheel system to reduce the SOC state of the flywheel system until the state of charge of the flywheel system is less than or equal to 52%, or until variable load is performed based on the simulated AGC command.

[0120] Second: The state of charge of the flywheel system is less than 48%.

[0121] Control the unit power of the thermal power unit to increase at a rate of 1.5%Pe / min. The increased total power of the power generation system is stored by the flywheel system to increase the SOC state of the flywheel system until the state of charge of the flywheel system is greater than or equal to 48%, or until variable load is performed based on the simulated AGC command.

[0122] The following gives an exemplary introduction to the methods for determining power limitation and capacity limitation provided by the embodiments of the present application.

[0123] For the case of power limitation, during the process of adjusting the total power of the power generation system for the first time, that is, during the first variable load process, the maximum power of the flywheel system limits the normal operation of the flywheel system. Specifically, the target power of the flywheel system required to complete the power adjustment is greater than the maximum power of the flywheel system. In the case of power limitation, even if the flywheel system provides the maximum power, it still cannot ensure that the total power of the power generation system is equal to the target load, and the power actually output by the flywheel system may be 0.

[0124] Specifically, calculate the difference between the target load indicated by the AGC command and the unit power of the thermal power unit. As an example, obtain that the variable load amplitude indicated by the simulated AGC command is Δ AGC (MW). Δ1 is the difference (MW) between the target load indicated by the AGC command and the total power of the power generation system, that is, the combined power of the flywheel-thermal power unit. Δ2 is the difference (MW) between the target load indicated by the AGC command and the unit power of the thermal power unit. Obtain the power adjustment rate of the thermal power unit, that is, the variable load rate is n (MW / min). Obtain the target adjustment rate, that is, the target variable load rate is m (MW / min).

[0125] The target power P ideal of the flywheel system required to complete the power adjustment is calculated as follows:

[0126]

[0127] Compare P ideal with the maximum power P flmax of the flywheel system. The unit of P flmax is the same as that of the target power, for example, both are megawatts (MW). Considering that P ideal may be positive or negative. Among them, a positive value represents the power output by the flywheel system to supplement the unit power of the thermal power unit, and a negative value represents the power for energy storage of the flywheel system. Compare |P ideal |, that is, the absolute value of the target power of the flywheel system, with the maximum power P flmax of the flywheel system. If |P ideal | ≤ P flmax , it is determined that there is no problem of power limitation in the flywheel system. If |P ideal | > P flmax , it is determined that there is a problem of power limitation in the flywheel system, and the number of times of power limitation is increased.

[0128] For the case of capacity limitation, during the process of regulating the total power of the primary frequency regulation power generation system, that is, during the primary load change process, the maximum capacity of the flywheel system limits the normal operation of the flywheel system. Specifically, the first energy required to complete the power regulation is greater than the second energy that the flywheel system can provide. In the case of capacity limitation, even if the flywheel system provides all the energy, it is still impossible to ensure that the total power of the power generation system is equal to the target load, and the power actually output by the flywheel system may be 0.

[0129] Specifically, calculate the first energy S1 required during this load change process and the second energy S2 that the flywheel system can provide.

[0130] As an example, obtain that the current power of the flywheel system is P fl (MW), where a positive value represents the output of the flywheel system to supplement the unit power of the thermal power unit, and a negative value represents the energy storage of the flywheel system. Obtain that the load change amplitude indicated by the simulated AGC command is Δ AGC (MW). Δ1 is the difference (MW) between the target load indicated by the AGC command and the total power of the power generation system, that is, the combined power of the flywheel-thermal power unit. Δ2 is the difference (MW) between the target load indicated by the AGC command and the unit power of the thermal power unit. Obtain the power regulation rate of the thermal power unit, that is, the load change rate is n (megawatts per minute (MW / min)). Obtain the target regulation rate, that is, the target load change rate is m (MW / min). The maximum allowable SOC capacity of the flywheel system is C max (megawatt-hours (MW·h)); the minimum allowable SOC capacity of the flywheel system is C min (MW·h). The current SOC capacity of the flywheel system is C cur (MW·h).

[0131] The formula for calculating S1 is formula (2):

[0132]

[0133] The formula for calculating S2 is formula (3):

[0134]

[0135] If S1 is less than or equal to S2, it indicates that the first energy required for power regulation is less than or equal to the maximum energy that the flywheel system can provide, that is, the second energy, and there is no problem of capacity limitation. If S1 is greater than S2, it indicates that the first energy required for power regulation is greater than the second energy that the flywheel system can provide, there is a problem of capacity limitation, and the number of times of capacity limitation is increased.

[0136] Based on the method for determining the flywheel capacity provided in the above method embodiments, the embodiments of the present application also provide a device for determining the flywheel capacity. The following will describe the device for determining the flywheel capacity with reference to the accompanying drawings.

[0137] See Figure 7 As shown, this figure is a schematic structural diagram of a device for determining the flywheel capacity provided in the embodiments of the present application. This device is applied to a power generation system including a flywheel system and a thermal power unit.

[0138] An acquisition unit 701, configured to acquire the equipment parameters of the power generation system and the simulated automatic generation control (AGC) instruction. The equipment parameters include the power parameters of the thermal power unit, the power parameters and power quantity parameters of a single flywheel, and the initial value of the flywheel capacity to be adjusted of the flywheel system. The simulated AGC instruction is used to indicate the target load to which the total power of the power generation system needs to be adjusted during the adjustment time period;

[0139] A simulation operation unit 702, configured to simulate the operation of the power generation system based on the equipment parameters according to the target load and the target adjustment rate indicated by the simulated AGC instruction, and obtain the simulation operation result of the power generation system. The simulation operation result includes the total power of the power generation system and the unit power of the thermal power unit during the adjustment time period;

[0140] An analysis unit 703, configured to analyze the simulation operation result and determine the number of times of operation limitation of the flywheel system;

[0141] A determination unit 704, configured to use the flywheel capacity to be adjusted as the flywheel capacity of the flywheel system if the number of times of operation limitation meets the operation condition;

[0142] An adjustment unit 705, configured to adjust the flywheel capacity to be adjusted if the number of restricted operations does not meet a preset operation condition, and call and execute the simulation operation unit 702 and subsequent units.

[0143] In a possible implementation manner, the simulation operation unit 702 is configured to simulate the operation of the power generation system based on the device parameters, including:

[0144] The simulation operation unit 702 is configured to obtain the current unit power of the thermal power unit and the current target load indicated by the simulated AGC command at the same moment within the adjustment time period; if the absolute value of the difference between the current unit power and the current target load is less than or equal to a first difference threshold, it is determined that the thermal power unit is in a stable operation state, and the total power of the power generation system is kept stable; if the absolute value of the difference between the current unit power and the current target load is greater than the first difference threshold, and the absolute value of the difference between the current target load and the target load before this load change is greater than or equal to a second difference threshold, it is determined that the thermal power unit is in a dynamic operation state, and the unit power of the thermal power unit and the flywheel power of the flywheel system are adjusted so that the absolute value of the difference between the total power of the power generation system and the target load is reduced.

[0145] In a possible implementation manner, the simulation operation unit 702 is configured to keep the total power of the power generation system stable, including:

[0146] The simulation operation unit 702 is configured to obtain the state of charge of the flywheel system; if the state of charge of the flywheel system does not belong to a preset state of charge range, the power of the thermal power unit is adjusted to increase or decrease the state of charge of the flywheel system, so that the absolute value of the difference between the state of charge of the flywheel system and the extreme value of the preset state of charge range is reduced, or belongs to the preset state of charge range, and the total power of the power generation system is kept stable.

[0147] In a possible implementation manner, the analysis unit 703 is specifically configured to determine the number of restricted operations of the flywheel system by using the simulation operation result when the thermal power unit is in the dynamic operation state.

[0148] In a possible implementation manner, the analysis unit 703 is configured to determine the number of restricted operations of the flywheel system, including:

[0149] The analysis unit 703 is configured to determine one or more of the number of power restrictions and the number of capacity restrictions.

[0150] In a possible implementation manner, the power restriction is determined by the following method:

[0151] It is determined that, in the process of adjusting the total power of the primary frequency regulation power generation system, the target power of the flywheel system required to complete the power adjustment is greater than the maximum power of the flywheel system;

[0152] The capacity limitation is determined in the following manner:

[0153] It is determined that, in the process of adjusting the total power of the primary frequency regulation power generation system, the first energy required to adjust the power generation system is greater than the second energy that the flywheel system can provide.

[0154] In a possible implementation manner, the analog AGC instruction is the AGC normal mode.

[0155] Based on the method for determining the flywheel capacity provided in the foregoing method embodiments, an embodiment of the present application further provides a device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for determining the flywheel capacity as described in any one of the foregoing is implemented.

[0156] Based on the method for determining the flywheel capacity provided in the foregoing method embodiments, an embodiment of the present application further provides a computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are run on a terminal device, the terminal device is caused to execute the method for determining the flywheel capacity as described in any one of the foregoing.

[0157] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the systems or devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description in the method part.

[0158] It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" may represent: only A exists, only B exists, and both A and B exist at the same time. Here, A and B may be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (one) of the following" or its similar expression refers to any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (one) of a, b, or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a, b, and c", where a, b, and c may be single or multiple.

[0159] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0160] The steps of the methods or algorithms described in connection with the embodiments disclosed herein can be implemented directly in hardware, in software modules executed by a processor, or in a combination of both. The software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium well known in the art.

[0161] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining flywheel capacity, characterized in that: The method is applied to a power generation system including a flywheel system and a thermal power unit, and the method comprises: Acquire equipment parameters of the power generation system and simulated automatic power generation control AGC instructions, wherein the equipment parameters include power parameters of the thermal power unit, power parameters and power parameters of a single flywheel, and an initial value of the flywheel capacity to be adjusted of the flywheel system, and the simulated automatic power generation control AGC instructions are used to indicate the target load to which the total power of the power generation system needs to be adjusted within the adjustment time period; According to the target load and target regulation rate indicated by the simulated automatic generation control AGC instruction, the operation of the power generation system is simulated based on the equipment parameters to obtain a simulated operation result of the power generation system, wherein the simulated operation result includes the total power of the power generation system and the unit power of the thermal power unit within the regulation time period; Analyzing the simulation operation results to determine the number of operation restrictions of the flywheel system; If the limited number of operations meets a preset operation condition, the flywheel capacity to be adjusted is used as the flywheel capacity of the flywheel system; If the limited number of operations does not meet the operating conditions, adjust the flywheel capacity to be adjusted, return to execute the target load and target regulation rate indicated by the simulated automatic generation control AGC instruction, simulate the operation of the power generation system based on the equipment parameters, and obtain the simulated operation results of the power generation system and subsequent steps.

2. The method according to claim 1, characterized in that The simulating the operation of the power generation system based on the equipment parameters comprises: Acquire the current unit power of the thermal power unit and the current target load indicated by the simulated automatic generation control AGC instruction at the same time within the adjustment time period; If the absolute value of the difference between the current unit power and the current target load is less than or equal to the first difference threshold, it is determined that the thermal power unit is in a stable operation state, and the total power of the power generation system is kept stable; If the absolute value of the difference between the current unit power and the current target load is greater than the first difference threshold, and the absolute value of the difference between the current target load and the target load before this load change is greater than or equal to the second difference threshold, it is determined that the thermal power unit is in a dynamic operation state, and the unit power of the thermal power unit and the flywheel power of the flywheel system are adjusted so that the absolute value of the difference between the total power of the power generation system and the target load is reduced.

3. The method according to claim 2, characterized in that The method of maintaining the total power of the power generation system stable comprises: Obtaining a charge state of the flywheel system; If the charge state of the flywheel system does not fall within the preset charge state range, the power of the thermal power unit is adjusted to increase or decrease the charge state of the flywheel system, so that the absolute value of the difference between the charge state of the flywheel system and the extreme value of the preset charge state range is reduced, or falls within the preset charge state range, and the total power of the power generation system is kept stable.

4. The method according to claim 3, characterized in that The analyzing the simulation operation result to determine the operation limit times of the flywheel system includes: The operation restriction times of the flywheel system are determined by using the simulation operation results of the thermal power unit in the dynamic operation state.

5. The method according to claim 1 or 4, characterized in that: Determining the limited number of operations of the flywheel system includes: One or more of a number of times power is limited and a number of times capacity is limited is determined.

6. The method according to claim 5, characterized in that The power limit is determined in the following manner: Determining that during a process of regulating the total power of the power generation system, a target power of the flywheel system required to complete power regulation is greater than a maximum power of the flywheel system; The capacity limitation is determined in the following manner: It is determined that during a total power adjustment process of the power generation system, a first energy required to adjust the power generation system is greater than a second energy that can be provided by the flywheel system.

7. The method according to any one of claims 1 to 4, characterized in that: The simulated automatic generation control AGC instruction is the AGC normal mode.

8. A device for determining flywheel capacity, characterized in that: The device is applied to a power generation system including a flywheel system and a thermal power unit, and the device includes: an acquisition unit, used for acquiring equipment parameters of the power generation system and a simulated automatic power generation control AGC instruction, wherein the equipment parameters include power parameters of the thermal power unit, power parameters and power parameters of a single flywheel, and an initial value of the flywheel capacity to be adjusted of the flywheel system, and the simulated automatic power generation control AGC instruction is used for indicating a target load to which the total power of the power generation system needs to be adjusted within an adjustment time period; a simulation operation unit, configured to simulate the operation of the power generation system based on the equipment parameters according to the target load and the target regulation rate indicated by the simulated automatic generation control AGC instruction, and obtain a simulation operation result of the power generation system, wherein the simulation operation result includes the total power of the power generation system and the unit power of the thermal power unit within the regulation time period; An analysis unit, used for analyzing the simulation operation result to determine the operation limit times of the flywheel system; a determination unit, configured to use the flywheel capacity to be adjusted as the flywheel capacity of the flywheel system if the limited number of operations satisfies a preset operation condition; The adjustment unit is used to adjust the flywheel capacity to be adjusted if the limited number of operations does not meet the preset operation conditions, and call and execute the simulation operation unit and the subsequent units.

9. A device for implementing a method for determining flywheel capacity, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the flywheel capacity according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device executes the method for determining the flywheel capacity as described in any one of claims 1-7.

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