A combined power control method, device, electronic equipment and medium

Abstract

The present invention discloses a combined power control method, device, electronic device and medium, which relates to the field of power control. It utilizes the characteristics of a flywheel energy storage system, such as rapid response and wide power range, to form a combined power supply system with a flywheel energy storage system and a pumped storage energy storage system. When the target power required by the power grid exceeds the rated power of the flywheel energy storage system, the flywheel energy storage system and the pumped storage energy storage system jointly complete the output of the target power. When the target power required by the power grid does not exceed the rated power of the flywheel energy storage system, the switching strategy of the flywheel energy storage system and the pumped storage energy storage system is determined according to the current power of the flywheel energy storage system, thereby completing the output of the target power. The flywheel-pumped storage combined power supply system and the combined power control method provided by this scheme can respond quickly and accurately to the dispatching requirements of the power grid, while reducing the problem of unit wear caused by high-frequency actions.

Description

Technical Field

[0001] The present invention relates to the field of power control, and in particular to a combined power control method, device, electronic equipment and medium. Background Art

[0002] In the prior art, pumped storage systems are generally used to store electricity because they can use electricity during low-load periods to pump water to the upper reservoir and release water to the lower reservoir for power generation during peak load periods. Pumped storage systems are also used as a "large-capacity, low-cost" regulating power source for the power system, which can achieve peak shaving and valley filling and emergency standby functions, and are of great significance for improving the safety and stability of power grid operation. However, with the large-scale access of new energy sources and changes in load characteristics, the traditional single pumped storage frequency regulation can no longer meet the requirements of the power grid due to its own insufficient response speed and accuracy. Therefore, how to quickly and accurately complete the power grid frequency regulation instructions has become an urgent problem to be solved. Summary of the invention

[0003] The object of the present invention is to provide a combined power control method, device, electronic device and medium. The flywheel-pumped storage combined power supply system provided by this scheme utilizes the characteristics of the flywheel energy storage system such as fast response and wide power range. The flywheel-pumped storage combined power supply system can respond quickly and accurately to the grid dispatching requirements under the control of the combined power control method, while reducing the unit wear problem caused by high-frequency operation.

[0004] In order to solve the above technical problems, the present invention provides a combined power control method, which is applied to a processor of a flywheel-pumped storage combined power supply system, wherein the flywheel-pumped storage combined power supply system further comprises: a flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to a power grid; the method comprises:

[0005] Determining the current power and rated power of the flywheel energy storage system;

[0006] Determine the target power required by the power grid according to the instruction issued by the power grid, and judge whether the target power is greater than the rated power;

[0007] If the target power is greater than the rated power, the flywheel energy storage system and the pumped storage energy storage system are controlled to output a first output power and a second output power to the power grid respectively at the same time, and when the sum of the first output power and the second output power is equal to the target power, the flywheel energy storage system and the pumped storage energy storage system are controlled to be shut down accordingly;

[0008] If the target power is not greater than the rated power, the flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the current power, and when the sum of the first output power output by the flywheel energy storage system and the second output power output by the pumped storage energy storage system is equal to the target power, the flywheel energy storage system and the pumped storage energy storage system are controlled to be shut down accordingly.

[0009] Optionally, determining the current power of the flywheel energy storage system includes:

[0010] Get historical frequency modulation instructions;

[0011] Determine, based on the historical frequency modulation instructions, the ratio of the number of increase instructions in the historical frequency modulation instructions to the total number of instructions in the historical frequency modulation instructions;

[0012] The current power of the flywheel energy storage system is determined according to the ratio.

[0013] Optionally, determining the current power of the flywheel energy storage system according to the ratio includes:

[0014] Determining the rated energy storage capacity of the flywheel energy storage system;

[0015] Determine the current power of the flywheel energy storage system according to the rated energy storage capacity, the ratio and the power determination formula;

[0016] Among them, the power determination formula is: Q=E*k; Q is the current power, E is the rated energy storage, and k is the ratio.

[0017] Optionally, controlling the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the current power includes:

[0018] Obtaining a basic ratio, and determining a basic quantity of electricity according to the basic ratio, the rated energy storage capacity and the quantity determination formula;

[0019] Determine the relationship between the basic power and the current power;

[0020] The flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the size relationship.

[0021] Optionally, controlling the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the size relationship includes:

[0022] When the basic power is not less than the current power, controlling the pumped energy storage system to start, and sending a power supply instruction to a preset power supply device, so that the preset power supply device supplies power to the flywheel energy storage system;

[0023] When the basic power is less than the current power, the flywheel energy storage system is controlled to turn on, and the target power corresponding to the target power is monitored, and the flywheel energy storage system and the pumped storage energy storage system are controlled to turn on or off accordingly according to the relationship between the target power and the basic power.

[0024] Optionally, controlling the flywheel energy storage system and the pumped storage energy storage system to be turned on or off accordingly according to the relationship between the target power and the basic power includes:

[0025] When the target power is not greater than the basic power, the flywheel energy storage system is controlled to be turned on, and the pumped storage energy storage system is controlled to be turned off;

[0026] When the target power is greater than the basic power, the pumped storage energy storage system is controlled to be turned on, and the flywheel energy storage system is controlled to be turned off after a preset delay time.

[0027] Optionally, after controlling the pumped storage energy storage system to start, and controlling the flywheel energy storage system to close after a delay of a preset time, the method further includes:

[0028] Real-time monitoring of the power output value of the pumped energy storage system;

[0029] When the power output value is greater than the rated power output value of the pumped energy storage system, controlling the flywheel energy storage system to start and absorb a first power difference between the power output value and the rated power output value;

[0030] When the power output value is less than the rated power output value of the pumped energy storage system, the flywheel energy storage system is controlled to start, and a second power difference between the rated power output value and the power output value is transmitted to the pumped energy storage system.

[0031] In order to solve the above technical problems, the present invention also provides a combined power control device, which is applied to a processor of a flywheel-pumped storage combined power supply system, wherein the flywheel-pumped storage combined power supply system further comprises: a flywheel energy storage system and a pumped storage combined energy storage system, wherein the flywheel energy storage system is connected to the pumped storage combined energy storage system, and both the flywheel energy storage system and the pumped storage combined energy storage system are connected to a power grid; the device comprises:

[0032] A first determining unit, used to determine the current power and rated power of the flywheel energy storage system;

[0033] A second determining unit, configured to determine a target power required by the power grid according to an instruction issued by the power grid, and to determine whether the target power is greater than the rated power;

[0034] a first control unit, configured to control the flywheel energy storage system and the pumped storage energy storage system to simultaneously output a first output power and a second output power to the power grid respectively when the target power is greater than the rated power, and to control the flywheel energy storage system and the pumped storage energy storage system to be shut down accordingly when the sum of the first output power and the second output power is equal to the target power;

[0035] a second control unit, for controlling the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the current power when the target power is not greater than the rated power, and controlling the flywheel energy storage system and the pumped storage energy storage system to be shut down accordingly when the sum of the first output power output by the flywheel energy storage system and the second output power output by the pumped storage energy storage system is equal to the target power.

[0036] In order to solve the above technical problems, the present invention further provides an electronic device, comprising:

[0037] A flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to a power grid;

[0038] A processor is used to implement the steps of the above-mentioned joint power control method when executing the computer program.

[0039] In order to solve the above technical problem, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the joint power control method as described above are implemented.

[0040] The purpose of the present invention is to provide a combined power control method, device, electronic device and medium, which utilizes the characteristics of the flywheel energy storage system such as fast response and wide power range, and combines the flywheel energy storage system with the pumped storage system to form a combined power supply system. When the target power required by the power grid exceeds the rated power of the flywheel energy storage system, the flywheel energy storage system and the pumped storage system jointly complete the output of the target power. When the target power required by the power grid does not exceed the rated power of the flywheel energy storage system, the switching strategy of the flywheel energy storage system and the pumped storage system is determined according to the current power of the flywheel energy storage system, thereby completing the output of the target power. The flywheel-pumped storage combined power supply system and the combined power control method provided by this scheme can respond quickly and accurately to the grid dispatching requirements, while reducing the unit wear problem caused by high-frequency actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0042] Figure 1 A process flow chart of a combined power control method provided by the present invention;

[0043] Figure 2 A schematic diagram of the structure of a flywheel-pumped storage combined power supply system provided by the present invention;

[0044] Figure 3 A schematic structural diagram of a combined power control device provided by the present invention. DETAILED DESCRIPTION

[0045] The core of the present invention is to provide a photovoltaic module shutdown control device, method, electronic equipment and medium. The flywheel-pumped storage combined power supply system provided by this scheme utilizes the characteristics of the flywheel energy storage system such as fast response and wide power range. The flywheel-pumped storage combined power supply system can respond quickly and accurately to the grid dispatching requirements under the control of the combined power control method, while reducing the unit wear problem caused by high-frequency action.

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Please refer to Figure 1 , Figure 1 A process flow chart of a combined power control method provided by the present invention. The combined power control method is applied to a processor of a flywheel-pumped storage combined power supply system, wherein the flywheel-pumped storage combined power supply system further comprises: a flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to a power grid; the method comprises:

[0048] S11: Determine the current power and rated power of the flywheel energy storage system;

[0049] S12: Determine the target power required by the power grid according to the instruction issued by the power grid, and judge whether the target power is greater than the rated power;

[0050] S13: If the target power is greater than the rated power, the flywheel energy storage system and the pumped storage energy storage system are controlled to output the first output power and the second output power to the power grid respectively at the same time, and when the sum of the first output power and the second output power is equal to the target power, the flywheel energy storage system and the pumped storage energy storage system are controlled to be closed accordingly;

[0051] S14: If the target power is not greater than the rated power, the flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the current power, and when the sum of the first output power output by the flywheel energy storage system and the second output power output by the pumped storage system is equal to the target power, the flywheel energy storage system and the pumped storage system are controlled to be closed accordingly.

[0052] In the present invention, it is necessary to utilize the characteristics of the flywheel energy storage system in the flywheel-pumped storage combined power supply system, such as fast response and wide power range. When permitted, the flywheel energy storage system is given priority for power output. Therefore, after the power grid issues an instruction, it is necessary to determine the target power required by the power grid according to the instruction. At this time, it is necessary to first determine whether the rated power of the flywheel energy storage system is less than the target power required by the power grid. If the rated power is less than the target power required by the power grid, it proves that even if the current power of the flywheel energy storage system is equal to its own rated power, it cannot meet the needs of the power grid. Therefore, it is necessary to control the flywheel energy storage system and the pumped storage energy storage system to be turned on at the same time, so that the power output of the flywheel energy storage system and the pumped storage energy storage system is equal to the target power. Similarly, when the target power required by the power grid does not exceed the rated power of the flywheel energy storage system, it is necessary to determine the actual switching conditions of the flywheel energy storage system and the pumped storage energy storage system according to the current power of the flywheel energy storage system, that is, according to the current power of the flywheel energy storage system. The ultimate goal is to make the power output of the flywheel energy storage system and the pumped storage energy storage system equal to the target power. The flywheel-pumped storage combined power supply system provided by this solution is simple and easy to implement and can respond quickly and accurately to grid dispatch requirements under the control of the combined power control method, while reducing the unit wear problem caused by high-frequency operation.

[0053] It should be noted that the combined power control method provided in this application determines the charge and discharge strategy of the flywheel energy storage system by analyzing the frequency variation law of the power grid and the operating characteristics of the unit. The power and time range that the flywheel energy storage system can participate in are determined based on the historical increase and decrease times and duration distribution as well as the specific storage energy and charge / discharge characteristics of the flywheel energy storage system; the flywheel energy storage system independently completes the adjustment tasks for the instructions within the above time and power range, and the rest is first supplemented by the flywheel energy storage system for a short time and then gradually joined by the pumped storage system for joint execution, such as Figure 2As shown, the flywheel energy storage system is composed of a flywheel array, which is composed of several flywheel units, and the pumped storage power station is composed of a lower reservoir, an upper reservoir and a generator. A rectifier, an inverter and a transformer are arranged in sequence between the flywheel energy storage system and the power grid, that is, the AC power output by the flywheel energy storage system is first converted into the corresponding DC power by the rectifier, and the generated DC power is then converted into the corresponding AC power by the inverter. Finally, the voltage of the AC power is converted into the corresponding voltage by the transformer and then transmitted to the power grid.

[0054] This embodiment provides a combined power control method, which utilizes the characteristics of the flywheel energy storage system such as fast response and wide power range, and combines the flywheel energy storage system and the pumped storage energy storage system into a combined power supply system. When the target power required by the power grid exceeds the rated power of the flywheel energy storage system, the flywheel energy storage system and the pumped storage energy storage system jointly complete the output of the target power. When the target power required by the power grid does not exceed the rated power of the flywheel energy storage system, the switching strategy of the flywheel energy storage system and the pumped storage energy storage system is determined according to the current power of the flywheel energy storage system, thereby completing the output of the target power. The flywheel-pumped storage combined power supply system and the combined power control method provided by this solution can respond quickly and accurately to the grid dispatching requirements, while reducing the unit wear problem caused by high-frequency actions.

[0055] Based on the above embodiments:

[0056] As an optional embodiment, determining the current power of the flywheel energy storage system includes:

[0057] Get historical frequency modulation instructions;

[0058] Determine, based on the historical frequency modulation instructions, the ratio of the number of increase instructions in the historical frequency modulation instructions to the total number of instructions in the historical frequency modulation instructions;

[0059] The current charge of the flywheel energy storage system is determined based on the ratio.

[0060] In the present invention, the specific process of determining the current power of the flywheel energy storage system is: first obtain the historical frequency modulation instructions, because the historical frequency modulation instructions include both increase instructions and decrease instructions, and the ratio of the number of increase instructions to the total number of historical frequency modulation instructions also determines the current power of the flywheel energy storage system, so the current power of the flywheel energy storage system can be accurately determined according to the determined ratio.

[0061] As an optional embodiment, determining the current power of the flywheel energy storage system according to the ratio includes:

[0062] Determine the rated storage capacity of the flywheel energy storage system;

[0063] Determine the current power of the flywheel energy storage system based on the rated energy storage, ratio and power determination formula;

[0064] The formula for determining the power is: Q=E*k; Q is the current power, E is the rated energy storage, and k is the ratio.

[0065] In the present invention, the specific process of determining the current power of the flywheel energy storage system according to the ratio is as follows: According to the power determination formula, the power is related to the rated storage capacity of the flywheel energy storage system and the ratio of the number of increase instructions in the historical frequency modulation instructions to the total number of historical frequency modulation instructions. Therefore, when the ratio is determined, it is also necessary to determine the rated storage capacity of the flywheel energy storage system, and then substitute it into the power determination formula to accurately obtain the current power of the flywheel system.

[0066] As an optional embodiment, the flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the current power, including:

[0067] Obtain the basic ratio, and determine the basic power according to the basic ratio, rated energy storage and power determination formula;

[0068] Determine the relationship between the basic power and the current power;

[0069] The flywheel energy storage system and the pumped storage energy storage system are controlled according to the size relationship to implement a preset switching strategy.

[0070] In the present invention, considering that the flywheel energy storage system may be operated multiple times in a day, it is necessary to determine a basic amount of electricity corresponding to a basic ratio in actual use to ensure that the consumption of the flywheel energy storage system each time it runs does not exceed the basic amount of electricity as much as possible, so that when receiving another instruction sent by the power grid, it can operate independently or cooperate with the pumped storage energy storage system to output power, so as to respond quickly and accurately to the power grid dispatching requirements. In addition, because the pumped storage energy storage system will experience power fluctuations in actual use, in order to solve this problem, this solution requires the flywheel energy storage system to have a certain amount of spare power to balance the power fluctuations of the pumped storage energy storage system during operation. And because the response speed of the pumped storage energy storage system is slow, the flywheel energy storage system needs to reserve a part of the electricity to wait for the pumped storage energy storage system to start working. It can be seen from this that the actual switching conditions of the flywheel energy storage system and the pumped storage energy storage system need to be determined based on the relationship between the basic amount of electricity and the current amount of electricity.

[0071] As an optional embodiment, the flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the size relationship, including:

[0072] When the basic power is not less than the current power, the pumped storage energy storage system is controlled to start, and a power supply instruction is sent to the preset power supply device so that the preset power supply device supplies power to the flywheel energy storage system;

[0073] When the basic power is less than the current power, the flywheel energy storage system is controlled to turn on, and the target power corresponding to the target power is monitored, and the flywheel energy storage system and the pumped storage energy storage system are controlled to turn on or off accordingly according to the relationship between the target power and the basic power.

[0074] In the present invention, when the basic power is not less than the current power, it proves that the energy of the flywheel energy storage system is too low and needs to be charged, so it is necessary to send a power supply instruction to the preset power supply device so that the preset power supply device supplies power to the flywheel energy storage system. At this time, the target power required by the power grid requires the pumped storage system to output independently. Similarly, when the basic power is less than the current power, the energy of the flywheel energy storage system meets the operating requirements, so it is necessary to control the flywheel energy storage system to open. In addition, because the target power is in the real-time operation process, the corresponding power will gradually increase, so it is necessary to implement monitoring of the target power corresponding to the target power, and control the flywheel energy storage system and the pumped storage system to open or close accordingly according to the relationship between the target power and the basic power, so as to ensure that the consumption of the flywheel energy storage system each time it runs does not exceed the basic power as much as possible, so that when receiving another instruction sent by the power grid, it can operate independently or cooperate with the pumped storage system to output power, so as to respond quickly and accurately to the grid dispatching requirements, and balance the power fluctuations caused by the operation of the pumped storage system when cooperating with the pumped storage system to output power.

[0075] It should be noted that the relationship between power and electricity is: PT=Q, where P represents power and T represents time. For example, when the basic ratio is 10%, if the energy storage required to maintain the instruction is between 0-10%E (base electricity), the flywheel energy storage system participates in frequency regulation alone; if the energy storage required to maintain the instruction is greater than 10%E, the flywheel energy storage system will gradually participate in frequency regulation after t (t=10%E / P) time until the flywheel energy storage system exits, and during the frequency regulation process, the flywheel energy storage system smoothes the power due to power fluctuations caused by changes in reservoir water level and water inlet flow in the pumped storage energy storage system. In addition, when the energy storage of the flywheel energy storage system is between 10%EQ, the flywheel energy storage system can rely on the frequency regulation instruction sent by the power grid to charge; when the energy storage of the flywheel system is lower than 10%E, it can be charged through the preset power supply equipment or the power grid.

[0076] As an optional embodiment, the flywheel energy storage system and the pumped storage energy storage system are controlled to be turned on or off accordingly according to the relationship between the target power and the basic power, including:

[0077] When the target power is not greater than the basic power, the flywheel energy storage system is controlled to be turned on, and the pumped storage energy storage system is controlled to be turned off;

[0078] When the target power is greater than the basic power, the pumped storage system is controlled to turn on, and the flywheel energy storage system is controlled to turn off after a preset delay time.

[0079] In the present invention, when the target power is not greater than the basic power, the flywheel energy storage system can independently meet the power demand of the power grid, so it is necessary to control the flywheel energy storage system to be turned on and the pumped storage energy storage system to be turned off; and when the target power is greater than the basic power, in order to retain a part of the electric energy of the flywheel energy storage system, it is necessary to control the pumped storage energy storage system to be turned on, but because the response speed of the pumped storage energy storage system is slow, it is necessary to control the flywheel energy storage system to be turned off after a preset delay time so that the pumped storage energy storage system can output power normally.

[0080] It should be noted that in actual applications, when the target power is greater than the basic power, the pumped energy storage system can be controlled to start when the target power is close to the basic power according to the actual start-up time of the pumped energy storage system, so that the pumped energy storage system can just output power when the flywheel energy storage system consumes the basic power.

[0081] As an optional embodiment, after controlling the pumped storage energy storage system to start, and controlling the flywheel energy storage system to close after a preset delay time, the method further includes:

[0082] Real-time monitoring of the power output value of the pumped energy storage system;

[0083] When the power output value is greater than the rated power output value of the pumped storage energy storage system, the flywheel energy storage system is controlled to start and absorb a first power difference between the power output value and the rated power output value;

[0084] When the power output value is less than the rated power output value of the pumped energy storage system, the flywheel energy storage system is controlled to start, and a second power difference between the rated power output value and the power output value is transmitted to the pumped energy storage system.

[0085] In the present invention, because the pumped storage system may experience power fluctuations in actual use, in order to solve this problem, this solution needs to monitor the power output value of the pumped storage system in real time after controlling the pumped storage system to start and controlling the flywheel energy storage system to close after a preset delay time, so as to judge the power fluctuation of the pumped storage system according to the power output value, and when the power output value is greater than the rated power output value of the pumped storage system, control the flywheel energy storage system to start, and absorb the first power difference between the power output value and the rated power output value, and when the power output value is less than the rated power output value of the pumped storage system, control the flywheel energy storage system to start, and transmit the second power difference between the rated power output value and the power output value to the pumped storage system. The power fluctuation problem caused by the operation of the pumped storage system can be balanced, and the stability of the solution is improved.

[0086] It should be noted that during the frequency regulation (operation) of the pumped storage system, the flywheel energy storage system smoothes the power due to power fluctuations caused by changes in reservoir water level and water inlet flow.

[0087] Please refer to Figure 3 , Figure 3 A structural schematic diagram of a combined power control device provided by the present invention. The combined power control device is applied to a processor of a flywheel-pumped storage combined power supply system, wherein the flywheel-pumped storage combined power supply system further comprises: a flywheel energy storage system and a pumped storage combined energy storage system, wherein the flywheel energy storage system is connected to the pumped storage combined energy storage system, and both the flywheel energy storage system and the pumped storage combined energy storage system are connected to a power grid; the device comprises:

[0088] A first determining unit 11 is used to determine the current power and rated power of the flywheel energy storage system;

[0089] A second determining unit 12 is used to determine the target power required by the power grid according to the instruction issued by the power grid, and to determine whether the target power is greater than the rated power;

[0090] A first control unit 13 is used to control the flywheel energy storage system and the pumped storage energy storage system to simultaneously output the first output power and the second output power to the power grid respectively when the target power is greater than the rated power, and to control the flywheel energy storage system and the pumped storage energy storage system to be shut down accordingly when the sum of the first output power and the second output power is equal to the target power;

[0091] The second control unit 14 is used to control the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the current power when the target power is not greater than the rated power, and to control the flywheel energy storage system and the pumped storage energy storage system to be shut down accordingly when the sum of the first output power output by the flywheel energy storage system and the second output power output by the pumped storage system is equal to the target power.

[0092] The combined power control device provided in this embodiment corresponds to the above-mentioned device, and therefore has the same beneficial effects as the above-mentioned method. Therefore, for the embodiments of the combined power control device part, please refer to the description of the embodiments of the method part, which will not be repeated here.

[0093] The present invention also provides an embodiment of an electronic device, the electronic device comprising:

[0094] A flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to the power grid;

[0095] The processor is used to implement the steps of the above-mentioned joint power control method when executing the computer program.

[0096] Among them, the processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor can be implemented in at least one hardware form of a digital signal processor (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor may be integrated with a graphics processing unit (GPU), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0097] The purpose of this embodiment is to provide an electronic device, in which a flywheel energy storage system and a pumped storage energy storage system are used to implement combined power supply, and the processor therein is used to implement the steps of the above-mentioned combined power control method when executing a computer program, so as to make the control process more efficient and accurate.

[0098] The present invention also provides an embodiment corresponding to a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned joint power control method are implemented.

[0099] It is understandable that if the method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0100] The computer-readable storage medium provided in this embodiment corresponds to the above method, and therefore has the same beneficial effects as the above method. Therefore, for the embodiments of the computer-readable storage medium part, please refer to the description of the embodiments of the method part, which will not be repeated here.

[0101] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0102] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A joint power control method, characterized in that: A processor applied to a flywheel-pumped storage combined power supply system, wherein the flywheel-pumped storage combined power supply system further comprises: a flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to a power grid; wherein the method comprises: Determine the current power and rated power of the flywheel energy storage system, wherein the determining the current power of the flywheel energy storage system comprises: obtaining historical frequency modulation instructions, determining the ratio of the number of increase instructions in the historical frequency modulation instructions to the total number of instructions in the historical frequency modulation instructions based on the historical frequency modulation instructions, and determining the current power of the flywheel energy storage system according to the ratio; Determine the target power required by the power grid according to the instruction issued by the power grid, and judge whether the target power is greater than the rated power; If the target power is greater than the rated power, the flywheel energy storage system and the pumped storage energy storage system are controlled to output a first output power and a second output power to the power grid respectively at the same time, and when the sum of the first output power and the second output power is equal to the target power, the flywheel energy storage system and the pumped storage energy storage system are controlled to be shut down accordingly; If the target power is not greater than the rated power, the flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the current power, and when the sum of the first output power output by the flywheel energy storage system and the second output power output by the pumped storage energy storage system is equal to the target power, the flywheel energy storage system and the pumped storage energy storage system are controlled to be shut down accordingly.

2. The combined power control method according to claim 1, characterized in that: Determining the current power of the flywheel energy storage system according to the ratio includes: Determining the rated energy storage capacity of the flywheel energy storage system; Determine the current power of the flywheel energy storage system according to the rated energy storage capacity, the ratio and the power determination formula; Among them, the power determination formula is: Q=E*k; Q is the current power, E is the rated energy storage, and k is the ratio.

3. The joint power control method according to claim 2, characterized in that: The controlling the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the current power includes: Obtaining a basic ratio, and determining a basic quantity of electricity according to the basic ratio, the rated energy storage capacity and the quantity determination formula; Determine the relationship between the basic power and the current power; The flywheel energy storage system and the pumped storage energy storage system are controlled to implement a preset switching strategy according to the size relationship.

4. The combined power control method according to claim 3, characterized in that: The method of controlling the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the size relationship includes: When the basic power is not less than the current power, controlling the pumped energy storage system to start, and sending a power supply instruction to a preset power supply device, so that the preset power supply device supplies power to the flywheel energy storage system; When the basic power is less than the current power, the flywheel energy storage system is controlled to turn on, and the target power corresponding to the target power is monitored, and the flywheel energy storage system and the pumped storage energy storage system are controlled to turn on or off accordingly according to the relationship between the target power and the basic power.

5. The combined power control method according to claim 4, characterized in that: The controlling the flywheel energy storage system and the pumped storage energy storage system to be turned on or off accordingly according to the magnitude relationship between the target power and the basic power includes: When the target power is not greater than the basic power, the flywheel energy storage system is controlled to be turned on, and the pumped storage energy storage system is controlled to be turned off; When the target power is greater than the basic power, the pumped storage energy storage system is controlled to be turned on, and the flywheel energy storage system is controlled to be turned off after a preset delay time.

6. The combined power control method according to claim 5, characterized in that: After controlling the pumped storage energy storage system to start, and controlling the flywheel energy storage system to close after a delay of a preset time, the method further includes: Real-time monitoring of the power output value of the pumped energy storage system; When the power output value is greater than the rated power output value of the pumped energy storage system, controlling the flywheel energy storage system to start and absorb a first power difference between the power output value and the rated power output value; When the power output value is less than the rated power output value of the pumped energy storage system, the flywheel energy storage system is controlled to start, and a second power difference between the rated power output value and the power output value is transmitted to the pumped energy storage system.

7. A combined power control device, characterized in that: A processor applied to a flywheel-pumped storage combined power supply system, wherein the flywheel-pumped storage combined power supply system further comprises: a flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to a power grid; wherein the device comprises: A first determination unit is used to determine the current power and rated power of the flywheel energy storage system, wherein the determination of the current power of the flywheel energy storage system comprises: obtaining historical frequency modulation instructions, determining the ratio of the number of increase instructions in the historical frequency modulation instructions to the total number of instructions in the historical frequency modulation instructions based on the historical frequency modulation instructions, and determining the current power of the flywheel energy storage system according to the ratio; A second determining unit, configured to determine a target power required by the power grid according to an instruction issued by the power grid, and to determine whether the target power is greater than the rated power; a first control unit, configured to control the flywheel energy storage system and the pumped storage energy storage system to simultaneously output a first output power and a second output power to the power grid respectively when the target power is greater than the rated power, and to control the flywheel energy storage system and the pumped storage energy storage system to be shut down accordingly when the sum of the first output power and the second output power is equal to the target power; a second control unit, for controlling the flywheel energy storage system and the pumped storage energy storage system to implement a preset switching strategy according to the current power when the target power is not greater than the rated power, and controlling the flywheel energy storage system and the pumped storage energy storage system to be shut down accordingly when the sum of the first output power output by the flywheel energy storage system and the second output power output by the pumped storage energy storage system is equal to the target power.

8. An electronic device, characterized in that: include: A flywheel energy storage system and a pumped storage energy storage system, wherein the flywheel energy storage system is connected to the pumped storage energy storage system, and both the flywheel energy storage system and the pumped storage energy storage system are connected to a power grid; A processor, configured to implement the steps of the joint power control method according to any one of claims 1 to 6 when executing a computer program.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the joint power control method according to any one of claims 1 to 6 are implemented.

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