A method of operating an energy supply system, an energy supply system, a device and a medium

Abstract

The application discloses a kind of energy supply system operation method, energy supply system, equipment and medium, it is related to energy management and power dispatching control technical field, the energy supply system includes control unit, energy storage unit, power grid and electrical load, the method includes: control unit acquires system operation basic information;According to the current power grid price, determine the current time period of price;According to the current available energy state, determine the energy release permission determination result of the energy storage unit;Based on the total power demand, determine the energy supply mode currently used according to the price time period and energy release permission determination result, and generate corresponding scheduling instruction.Through the feedback mechanism of real-time closed loop and the decision logic of hierarchical determination, under the premise of guaranteeing the reliability of data center power supply, flexible, economic and self-adaptive optimization operation management of energy storage system is realized, thereby effectively realizing peak clipping and valley filling, and reducing the overall power consumption cost of data center.

Description

Technical Field

[0001] This invention relates to the field of energy management and power dispatch control technology, specifically to an energy supply system operation method, energy supply system, equipment, and medium. Background Technology

[0002] With the rapid development of technologies such as artificial intelligence, big data, and high-performance computing, data centers, as core computing infrastructure, are experiencing continuously rising electricity loads, and electricity costs are accounting for an increasingly larger proportion of operating costs. Simultaneously, significant peak-valley electricity price differences exist in the electricity market, and the penetration rate of renewable energy generation is gradually increasing. Integrating energy storage systems with data center power supply systems to reduce energy costs and improve renewable energy absorption capacity through peak shaving and valley filling has become a mainstream development trend in the industry. Various energy storage technologies, due to their advantages in energy density, lifespan, and safety, are being increasingly applied to data center power supply systems.

[0003] Existing energy storage solutions for data centers still have significant shortcomings. Most focus on the system integration design of specific energy storage systems with data centers or static energy matching optimization, lacking real-time, closed-loop intelligent scheduling methods applicable to actual dynamic scenarios. During operation, this can easily lead to rigid energy storage operation modes, a single basis for energy supply decisions, and difficulty in balancing energy supply economy and power supply reliability, thus limiting the application effectiveness of energy storage in electricity consumption scenarios. Summary of the Invention

[0004] The main objective of this invention is to provide an energy supply system operation method, system, equipment, and medium. By collecting basic information such as electricity price, load power demand, and available energy status of energy storage, the invention sequentially determines the electricity price period and the energy storage release permit. Based on these results and load demand, it determines the energy supply mode and generates dispatch instructions. Through a real-time closed-loop feedback mechanism and hierarchical decision-making logic, it fundamentally overcomes the shortcomings of existing technologies, such as rigid dispatch modes and difficulty in responding to multi-dimensional real-time dynamic changes. While ensuring the reliability of power supply to data centers, it achieves flexible, economical, and adaptive optimized operation and management of the energy storage system, effectively achieving peak shaving and valley filling, and significantly reducing the overall electricity cost of data centers.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions: According to a first aspect of the embodiments of this application, a method for operating an energy supply system is provided. The energy supply system includes a control unit, an energy storage unit, a power grid, and electrical loads. The method is executed by the control unit and includes: The system collects basic operating information, including the current grid electricity price, the total power demand of the electrical load, and the current available energy status of the energy storage unit. The current electricity price period is determined based on the current grid electricity price. Based on the current available energy status, determine whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operation, and use this as the energy release permitting determination result; Based on the electricity price period and the energy release permit determination results, combined with the total power demand, the current energy supply mode to be adopted is determined, and the corresponding dispatch instructions are generated.

[0006] Optionally, when the electricity price period is a preset off-peak period, the determination of the appropriate energy supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and the generation of corresponding dispatch instructions, including: Determine whether the current available energy state of the energy storage unit is less than a preset maximum energy storage limit; If it is less than, then the energy supply mode is determined to be grid power supply and energy storage charging mode, and a dispatching command is generated to enable the grid to supply power to the load and enable the energy storage unit to enter the charging state. If the value is greater than or equal to the value, the power supply mode is determined to be the grid-independent power supply mode, and a dispatching command is generated to enable the grid to supply power to the load and to put the energy storage unit into standby mode.

[0007] Optionally, when the electricity price period is a preset peak electricity period, the determination of the current energy supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and the generation of corresponding dispatch instructions, including: If the energy release permission determination result indicates that the energy storage unit is in a preset low energy state, then the energy supply mode is determined to be the grid independent power supply mode, and a corresponding dispatch instruction is generated. If the energy release permission determination result is that the energy storage unit is in a preset high energy state or a preset medium energy state, then it is determined whether the energy storage unit meets the independent energy supply conditions. If the independent energy supply conditions are met, the energy supply mode is determined to be the independent power supply mode of the energy storage unit, and corresponding dispatch instructions are generated; if the independent energy supply conditions are not met, the energy supply mode is determined to be the coordinated power supply mode of the power grid and the energy storage unit, and corresponding dispatch instructions are generated.

[0008] Optionally, determining whether the energy storage unit meets the independent power supply conditions includes: Determine whether the maximum output power of the energy storage unit is greater than or equal to the total power demand; If so, the duration of sustainable independent power supply of the energy storage unit is determined based on the current available energy state of the energy storage unit, the preset safe energy lower limit, and the total power demand. Determine whether the duration of sustainable independent power supply is greater than or equal to a preset minimum independent operating time threshold; if the duration of sustainable independent power supply is greater than or equal to the preset minimum independent operating time threshold, then the independent power supply condition is met; if the duration of sustainable independent power supply is less than the preset minimum independent operating time threshold, or the maximum output power of the energy storage unit is less than the total power demand, then the independent power supply condition is not met.

[0009] Optionally, when the electricity price period is a preset flat electricity price period, the determination of the current energy supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and the generation of corresponding dispatch instructions, including: If the energy release permission determination result indicates that the energy storage unit is in a preset low energy state, then the energy supply mode is determined to be the grid independent power supply mode, and a corresponding dispatch instruction is generated. If the energy release permit determination result indicates that the energy storage unit is in a preset high energy state or a preset medium energy state, then the current grid electricity price is compared with the equivalent energy release cost of the energy storage unit. If the current grid electricity price is less than or equal to the equivalent energy release cost, the control unit determines the energy supply mode as grid-independent power supply mode and generates corresponding dispatch instructions. If the current grid electricity price is greater than the equivalent energy release cost, then it is determined whether the next scheduling cycle is a peak power period; if the next scheduling cycle is a peak power period, then the energy supply mode is determined to be the grid independent power supply mode, and a corresponding scheduling instruction is generated; if the next scheduling cycle is not a peak power period, then the energy supply mode is determined to be the grid and energy storage unit collaborative power supply mode, and a corresponding scheduling instruction is generated.

[0010] Optionally, the method further includes: When the mode switching trigger condition is detected to be met, a switching power supply mode scheduling command is generated; wherein, the mode switching trigger condition includes: a change in the electricity price period, a change in the energy release permission determination result of the energy storage unit, or a change in the total power demand of the electrical load exceeding a preset change threshold. Get the duration of the current power supply mode since it was started; Determine whether the duration has reached a preset minimum mode dwell time threshold; if the duration has not reached the preset minimum mode dwell time threshold, then prohibit the execution of the switching power supply mode scheduling instruction and maintain the current power supply mode; if the duration has reached the preset minimum mode dwell time threshold, then allow the execution of the switching power supply mode scheduling instruction.

[0011] Optionally, determining the power supply mode and generating scheduling instructions further includes: If the determined energy supply mode is an independent power supply mode for the energy storage unit or a coordinated power supply mode between the power grid and the energy storage unit, then based on the total power demand and the determined energy supply mode, the target power supply of the energy storage unit in the current scheduling cycle is determined. Obtain the actual power supply of the energy storage unit in the previous scheduling cycle; Calculate the absolute value of the difference between the target power supply and the actual power supply in the previous scheduling cycle; Determine whether the absolute value is greater than the product of the preset allowable power change rate and the preset scheduling cycle duration; If the target power supply is greater than the actual power supply of the previous scheduling cycle, the final power supply of the energy storage unit in the current scheduling cycle is determined as the actual power supply of the previous scheduling cycle plus the product of the preset allowable power change rate and the preset scheduling cycle duration; or, if the target power supply is less than the actual power supply of the previous scheduling cycle, the final power supply of the energy storage unit in the current scheduling cycle is determined as the actual power supply of the previous scheduling cycle minus the product of the preset allowable power change rate and the preset scheduling cycle duration. If it is less than or equal to, then the final power supply of the energy storage unit in the current scheduling cycle shall be determined as the target power supply. The power supply capacity of the power grid is determined as the difference between the total power demand and the final power supply capacity of the energy storage unit; The dispatch command is generated based on the final power supply of the energy storage unit and the power supply of the power grid.

[0012] Optionally, the step of determining whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operation based on the current available energy state, as the energy release permitting determination result, includes: The current available energy state is compared with a preset energy release operation threshold and a preset energy protection threshold, wherein the energy release operation threshold is greater than the energy protection threshold. If the current available energy state is greater than or equal to the energy release operation threshold, then the energy storage unit is determined to be in a high energy state; If the current available energy state is greater than the energy protection threshold but less than the energy release operation threshold, then the energy storage unit is determined to be in a medium energy state. If the current available energy state is less than or equal to the energy protection threshold, the energy storage unit is determined to be in a low energy state.

[0013] Optionally, determining the current electricity price period based on the current grid electricity price includes: The current grid electricity price is compared with the preset off-peak electricity price threshold and the preset peak electricity price threshold; If the current grid electricity price is less than or equal to the off-peak electricity price threshold, it is determined that the current period is a preset off-peak electricity period; If the current grid electricity price is greater than the off-peak electricity price threshold and less than or equal to the peak electricity price threshold, then it is determined that the current period is a preset flat electricity period. If the current grid electricity price is greater than the peak electricity price threshold, it is determined that the current period is a preset peak electricity period.

[0014] According to a second aspect of the embodiments of this application, an energy supply system is provided, the energy supply system including a control unit, an energy storage unit, a power grid, and an electrical load, the control unit including: The information acquisition module is used to collect basic system operation information, including the current grid electricity price, the total power demand of the electrical load, and the current available energy status of the energy storage unit. The electricity price period determination module is used to determine the current electricity price period based on the current grid electricity price. The energy release permit determination module is used to determine whether the energy storage unit has the permit conditions and corresponding permit level to participate in energy release operation based on the current available energy status, and to use the energy release permit determination result as the result. The power supply scheduling module is used to determine the current power supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and generate the corresponding scheduling instructions.

[0015] According to a third aspect of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect above.

[0016] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided having computer-readable instructions stored thereon, the computer-readable instructions being executable by a processor to implement the method described in the first aspect above.

[0017] In summary, this application provides an energy supply system operation method, system, equipment, and medium. The energy supply system includes a control unit, an energy storage unit, a power grid, and electrical loads. The control unit collects basic system operation information, including the current grid electricity price, the total power demand of the electrical loads, and the current available energy status of the energy storage unit. Based on the current grid electricity price, the current electricity price period is determined. Based on the current available energy status, it is determined whether the energy storage unit meets the permitting conditions and corresponding permit level for participating in energy release operations, serving as the energy release permit determination result. Based on the electricity price period and the energy release permit determination result, combined with the total power demand, the appropriate energy supply mode is determined, and a corresponding dispatch instruction is generated. By collecting basic information such as electricity price, load power demand, and available energy status of the energy storage, the electricity price period determination and energy storage energy release permit determination are completed sequentially. Based on the above results and load demand, the energy supply mode is determined, and dispatch instructions are generated. By using a real-time closed-loop feedback mechanism and a hierarchical decision-making logic, the shortcomings of existing technology scheduling modes, such as rigidity and difficulty in responding to multi-dimensional real-time dynamic changes, are fundamentally overcome. Under the premise of ensuring the reliability of power supply to data centers, flexible, economical and adaptive optimized operation and management of energy storage systems are achieved, thereby effectively realizing peak shaving and valley filling and reducing the overall electricity cost of data centers. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0020] Figure 1 The power supply system operation method provided in the embodiments of this application; Figure 2 This is a schematic diagram of the overall architecture of the power supply system provided in the embodiments of this application; Figure 3 The overall scheduling flowchart provided for the embodiments of this application; Figure 4A scheduling sub-flowchart provided for an embodiment of this application; Figure 5 A schematic diagram of the power supply system provided in the embodiments of this application; Figure 6 This paper shows a structural diagram of an electronic device provided in an embodiment of this application; Figure 7 A diagram of a computer-readable storage medium provided in an embodiment of this application is shown.

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0027] Figure 1 This application illustrates an embodiment of an energy supply system operation method, wherein the energy supply system includes a control unit, an energy storage unit, a power grid, and electrical loads. The method is executed by the control unit and includes: Step 101: Collect basic system operation information, including the current grid electricity price, the total power demand of the electrical load, and the current available energy status of the energy storage unit; Step 102: Determine the current electricity price period based on the current grid electricity price; Step 103: Determine whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operation based on the current available energy status, and use this as the energy release permitting determination result; Step 104: Based on the electricity price period and the energy release permit determination results, and in conjunction with the total power demand, determine the current energy supply mode to be adopted, and generate the corresponding dispatch instructions.

[0028] This application provides a method for operating an energy supply system, aiming to solve the core problem faced by existing energy storage systems in operation and scheduling: the difficulty in achieving a dynamic balance between energy supply economy, power supply reliability, and system operation stability. Existing technologies mostly focus on static system integration design, lacking the comprehensive processing capabilities and closed-loop decision-making mechanisms for multi-dimensional information such as real-time grid electricity prices, dynamic load demand, and the operating status of the energy storage units themselves. This results in low utilization rates of energy storage units, rigid energy supply operation modes, and an inability to achieve optimal control of the overall electricity costs of the data center.

[0029] The technical objective of this method is to construct a standardized intelligent scheduling framework to guide the energy supply system to achieve orderly transfer and efficient utilization of electrical energy over time based on real-time electricity price signals. It fully utilizes the peak-valley electricity price difference in the electricity market, replenishing energy storage units during off-peak hours and prioritizing the release of stored energy during peak hours to meet data center load demands, thereby effectively reducing the overall cost of purchasing electricity from the grid.

[0030] To achieve the aforementioned technical objectives, this method designs a hierarchical, progressive decision-making process executed by the control unit. The specific steps are as follows: First, basic system operation information is collected, including the current grid electricity price, the total power demand of the data center load, and the current available energy status of the energy storage unit, providing comprehensive and accurate data input for all subsequent decision-making stages. Second, based on the collected real-time electricity price, the current electricity price period is determined, clarifying the core direction of energy dispatch. Third, based on the real-time available energy status of the energy storage unit, its eligibility to participate in energy release operations and its corresponding capability level are evaluated to ensure that the subsequently generated dispatch instructions are actually executable. Finally, by comprehensively considering the electricity price period determination results, the energy storage release permission determination results, and the data center load demand, the optimal solution is selected from various energy supply modes, such as independent grid power supply, independent energy storage unit power supply, and coordinated power supply of both, and corresponding executable dispatch instructions are generated to achieve intelligent and efficient operation of the energy supply system.

[0031] In one possible implementation, the total power demand characterizes the overall power consumption of the data center during the scheduling cycle, and the current available energy state characterizes the energy level that the energy storage unit can currently use to output power. The power supply mode includes independent power supply from the grid, independent power supply from the energy storage unit, and coordinated power supply from the grid and the energy storage unit.

[0032] In one possible implementation, in step 102, determining the current electricity price period based on the current grid electricity price includes: comparing the current grid electricity price with a preset off-peak electricity price threshold and a preset peak electricity price threshold; if the current grid electricity price is less than or equal to the off-peak electricity price threshold, then determining that the current period is a preset off-peak electricity period; if the current grid electricity price is greater than the off-peak electricity price threshold and less than or equal to the peak electricity price threshold, then determining that the current period is a preset flat electricity period; if the current grid electricity price is greater than the peak electricity price threshold, then determining that the current period is a preset peak electricity period.

[0033] In one implementation, the electricity price time period determination process in step 102 is as follows: through comparison logic, the dynamically changing real-time electricity price is transformed into three discrete time periods that can be identified by the scheduling decision system.

[0034] First, the control unit acquires two preset key parameters: a preset off-peak electricity price threshold and a preset peak electricity price threshold. The preset peak electricity price threshold is higher than the preset off-peak electricity price threshold, and both serve as the criteria for dividing the electricity price range. Then, the control unit compares the real-time collected current grid electricity price with the above two thresholds, and determines the current electricity price period based on the comparison result. The specific determination rules are as follows: 1. When the current grid electricity price is less than or equal to the preset off-peak electricity price threshold, the current period is determined to be an off-peak electricity period. This period is usually when the grid load is low and the electricity price is the lowest, and it is also the key period for prioritizing the charging and storage of energy storage units.

[0035] 2. When the current grid electricity price is greater than the preset off-peak electricity price threshold but less than or equal to the preset peak electricity price threshold, the current period is determined to be a flat electricity period. During this period, the electricity price is at a moderate level. Subsequent dispatch decisions need to be made by taking into account factors such as the status of the energy storage unit and the electricity price forecast for the next period, and conducting an economic assessment to determine whether the energy storage unit should participate in power supply.

[0036] 3. When the current grid electricity price is greater than the preset peak electricity price threshold, the current period is determined to be a peak electricity period. This period is usually the time when the grid load is at its peak and the electricity price is the highest. At this time, the energy storage unit is given priority to release energy to replace or partially replace the grid power supply, thereby achieving the goal of peak shaving and valley filling and reducing electricity costs.

[0037] In one possible implementation, in step 103, determining whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operation based on the current available energy state, as the energy release permit determination result, includes: comparing the current available energy state with a preset energy release operation threshold and a preset energy protection threshold, wherein the energy release operation threshold is greater than the energy protection threshold; if the current available energy state is greater than or equal to the energy release operation threshold, then the energy storage unit is determined to be in a high-energy state; if the current available energy state is greater than the energy protection threshold but less than the energy release operation threshold, then the energy storage unit is determined to be in a medium-energy state; if the current available energy state is less than or equal to the energy protection threshold, then the energy storage unit is determined to be in a low-energy state.

[0038] In one implementation, step 103 determines the energy release permit status of the energy storage unit by comparing dual thresholds and classifying the real-time energy level of the energy storage unit to provide accurate access basis for subsequent scheduling decisions. This method not only determines whether the energy storage unit can discharge, but also further distinguishes its discharge capacity level.

[0039] First, this implementation method sets two key energy thresholds: a preset energy release operation threshold and a preset energy protection threshold, wherein the preset energy release operation threshold is greater than the preset energy protection threshold. These two thresholds constitute an energy state zoning framework, dividing the current available energy state of the energy storage unit into three levels with clear scheduling significance. The specific determination rules are as follows: 1. High Energy State: When the current available energy state is greater than or equal to the preset energy release operation threshold, the control unit determines that the energy storage unit is in a high energy state. At this time, the energy storage unit has sufficient energy reserves and is fully authorized to release energy. During periods when energy storage power supply is needed, it can freely discharge according to its maximum capacity or demand.

[0040] 2. Medium Energy State: When the current available energy is greater than the preset energy protection threshold but less than the preset energy release operation threshold, the control unit determines that the energy storage unit is in a medium energy state. At this time, the energy storage unit still has some usable energy, but it is below the optimal reserve level, and energy release is restricted. During scheduling, its discharge power must be limited or it must only participate in power supply under specific conditions to avoid excessive energy consumption and ensure power supply capacity and system safety redundancy during subsequent critical periods.

[0041] 3. Low Energy State: When the current available energy is less than or equal to the preset energy protection threshold, the control unit determines that the energy storage unit is in a low energy state. This is a protective state, indicating that the available energy of the energy storage unit has dropped to the minimum level for safe operation. At this time, the energy storage unit is prohibited from participating in any energy release operation to prevent damage to the equipment due to over-discharge. At the same time, it reserves basic energy reserves for system emergencies. The dispatching system will put the energy storage unit into standby or energy protection state.

[0042] In one possible implementation, when the electricity price period is a preset off-peak period, in step 104, based on the electricity price period and the energy release permit determination result, combined with the total power demand, the current energy supply mode to be adopted is determined, and a corresponding dispatch instruction is generated, including: determining whether the current available energy state of the energy storage unit is less than a preset maximum energy storage limit; if it is less, the energy supply mode is determined to be grid power supply and energy storage charging mode, and a dispatch instruction is generated to enable the grid to supply power to the load and enable the energy storage unit to enter the charging state; if it is greater than or equal to, the energy supply mode is determined to be grid independent power supply mode, and a dispatch instruction is generated to enable the grid to supply power to the load and enable the energy storage unit to enter the standby state.

[0043] In one implementation, during off-peak electricity hours with the lowest electricity prices, energy is replenished to the energy storage unit based on optimal economic efficiency, serving as a backup for subsequent high-price periods while ensuring a continuous and reliable power supply to the data center load. After determining that it is currently an off-peak electricity hour, the control unit initiates a dedicated energy supply mode decision subprocess for that period. The first operation is to check the availability of the energy storage space in the energy storage unit. The control unit obtains the current available energy status of the energy storage unit and compares it with a preset maximum energy storage limit, which is the maximum energy storage capacity of the energy storage unit within the safety and technically permissible range. Based on the comparison result, the system performs a binary decision, as follows: 1. Grid Power Supply and Energy Storage Charging Mode: If the current available energy state of the energy storage unit is less than the preset maximum energy storage limit, it indicates that the energy storage unit still has surplus storage space. At this time, in order to make full use of cheap off-peak electricity, the control unit determines the power supply mode as grid power supply and energy storage charging mode, and generates a composite dispatch command. On the one hand, it controls the grid to supply power to the data center load to meet its total power demand; on the other hand, it controls the energy storage unit to enter the charging state, obtain electrical energy from the grid and store it, realizing energy time shifting and converting off-peak electricity into energy reserves that can be used later.

[0044] 2. Grid-Independent Power Supply Mode: If the current available energy of the energy storage unit is greater than or equal to the preset maximum energy storage limit, it indicates that the energy storage unit is close to or has reached full storage. Continuing to charge at this point is unnecessary and may pose an overcharging risk. The control unit determines the power supply mode to be grid-independent and generates corresponding dispatch instructions. The grid is controlled to supply power solely to the load, ensuring continuous load operation; simultaneously, the energy storage unit is controlled to enter standby mode to avoid unnecessary energy consumption and equipment damage, reserving energy for use during subsequent periods of high demand.

[0045] The above decision-making process, through threshold comparison and mode selection, ensures that the system operation during off-peak hours maximizes economic benefits while strictly adhering to the safety constraints of energy storage equipment. It achieves low-cost energy storage while avoiding ineffective or harmful operations through energy storage status checks, thus ensuring the safe, efficient, and automatic execution of the off-peak energy storage link in the "peak shaving and valley filling" strategy.

[0046] In one possible implementation, when the electricity price period is a preset peak electricity period, in step 104, the determination of the current energy supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and the generation of corresponding dispatch instructions, includes: if the energy release permit determination result indicates that the energy storage unit is in a preset low energy state, then the energy supply mode is determined to be the grid-independent power supply mode, and corresponding dispatch instructions are generated; if the energy release permit determination result indicates that the energy storage unit is in a preset high energy state or a preset medium energy state, then it is determined whether the energy storage unit meets the independent energy supply conditions; if the independent energy supply conditions are met, then the energy supply mode is determined to be the energy storage unit independent power supply mode, and corresponding dispatch instructions are generated; if the independent energy supply conditions are not met, then the energy supply mode is determined to be the grid and energy storage unit coordinated power supply mode, and corresponding dispatch instructions are generated.

[0047] In one possible implementation, determining whether the energy storage unit meets the independent power supply conditions includes: determining whether the maximum output power of the energy storage unit is greater than or equal to the total power demand; if so, determining the sustainable independent power supply duration of the energy storage unit based on the current available energy state of the energy storage unit, a preset safe energy lower limit, and the total power demand; determining whether the sustainable independent power supply duration is greater than or equal to a preset minimum independent operating time threshold; if the sustainable independent power supply duration is greater than or equal to the preset minimum independent operating time threshold, then it is determined that the independent power supply conditions are met; if the sustainable independent power supply duration is less than the preset minimum independent operating time threshold, or the maximum output power of the energy storage unit is less than the total power demand, then it is determined that the independent power supply conditions are not met.

[0048] In one implementation, during peak electricity hours when prices are highest, energy is prioritized, safely, and reliably stored in energy storage units to maximize the replacement of expensive grid power supply and optimize electricity costs, while ensuring the absolute reliability of power supply to data center loads. After the control unit determines that it is currently in a peak electricity period, it initiates a multi-level judgment-based power supply mode decision sub-process. This process focuses on power supply reliability and first performs initial power diversion based on the energy release permission determination result of the energy storage units.

[0049] If the energy release permission determination result indicates that the energy storage unit is in a low-energy state, it means that the energy reserve of the energy storage unit has dropped to or below the safety protection line and does not meet the conditions for discharge. To ensure continuous power supply to the load, the control unit directly determines the power supply mode as the grid-independent power supply mode, generates corresponding dispatch instructions, and the grid assumes full power supply responsibility, while prohibiting the energy storage unit from outputting energy.

[0050] If the energy release permit determination result indicates that the energy storage unit is in a high-energy or medium-energy state, it means that the energy storage unit is qualified to discharge. At this time, the control unit enters the refined independent power supply capability verification stage to assess the energy storage unit's ability and extent to replace grid power supply. The verification includes two levels of condition judgment: the first is instantaneous power capability verification. The control unit determines whether the maximum output power of the energy storage unit is greater than or equal to the total power demand of the data center load. This is the basic power condition for the energy storage unit to independently support the operation of the load. If this condition is not met, it is directly determined that the energy storage unit does not meet the independent power supply condition, and no further verification is required.

[0051] If the instantaneous power condition is met, the system proceeds to continuous power supply capability verification. This verification incorporates a time dimension to prevent the energy storage unit from meeting the instantaneous power requirement but having insufficient energy reserves, which could lead to frequent power supply mode switching and affect system stability. The control unit calculates the sustainable independent power supply duration of the energy storage unit based on the current available energy state of the energy storage unit, the preset safe energy lower limit (the minimum energy reserved to protect the energy storage unit), and the total load power demand. The calculation logic is as follows: subtract the preset safe energy lower limit from the current available energy to obtain the net energy available for power supply; then divide this net energy by the total load power demand to estimate the duration for which the energy storage unit can independently supply power under the current load level.

[0052] Subsequently, the control unit compares the estimated sustainable independent power supply duration with a preset minimum independent operating time threshold, which is the shortest duration allowed in a single independent power supply mode from the perspective of system operational stability. If the sustainable independent power supply duration is greater than or equal to the threshold, the energy storage unit is determined to meet the independent power supply conditions; if it is less than the threshold, it is determined to not meet the independent power supply conditions.

[0053] After verifying the independent power supply capability, the control unit determines the final power supply mode based on the verification results: if the independent power supply conditions are met, the power supply mode is determined to be the independent power supply mode of the energy storage unit, and a dispatch command is generated so that the energy storage unit independently supplies power to the load, and the power grid withdraws from the power supply circuit to achieve optimal economy; if the independent power supply conditions are not met, the power supply mode is determined to be the coordinated power supply mode of the power grid and the energy storage unit, and a dispatch command is generated so that the power grid and the energy storage unit jointly supply power to the load, and the energy storage unit participates in the power supply with limited power according to its maximum output power and available energy.

[0054] In one possible implementation, when the electricity price period is a preset flat electricity period, in step 104, the determination of the current energy supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and the generation of corresponding dispatch instructions, includes: if the energy release permit determination result indicates that the energy storage unit is in a preset low energy state, then the energy supply mode is determined to be the grid-independent power supply mode, and corresponding dispatch instructions are generated; if the energy release permit determination result indicates that the energy storage unit is in a preset high energy state or a preset medium energy state, then the current grid electricity price is compared with... The equivalent energy release cost of the energy storage unit; if the current grid electricity price is less than or equal to the equivalent energy release cost, the control unit determines the energy supply mode as grid-independent power supply mode and generates corresponding dispatch instructions; if the current grid electricity price is greater than the equivalent energy release cost, it determines whether the next dispatch cycle is a peak power period; if the next dispatch cycle is a peak power period, it determines the energy supply mode as grid-independent power supply mode and generates corresponding dispatch instructions; if the next dispatch cycle is not a peak power period, it determines the energy supply mode as grid and energy storage unit collaborative power supply mode and generates corresponding dispatch instructions.

[0055] In one implementation, the decision-making process in step 104 during flat electricity periods differs significantly from that during off-peak and peak electricity periods, balancing economic optimization with energy storage resource reserves. During flat electricity periods, electricity prices are at a moderate level. Whether energy storage units should participate in power supply depends on whether it is economical to utilize energy storage at the current time, while avoiding impacting power supply capacity during future critical periods. After determining that it is currently a flat electricity period, the control unit first performs preliminary power diversion based on the energy release permit determination results of the energy storage units.

[0056] If the energy release permit determination result indicates that the energy storage unit is in a low-energy state, it means that the energy of the energy storage unit has reached the protection lower limit. To ensure equipment safety and reserve emergency energy, the control unit directly determines the power supply mode to be grid-independent power supply mode, with the grid assuming full power supply responsibility, and prohibits the energy storage unit from outputting energy. If the energy release permit determination result indicates that the energy storage unit is in a high-energy state or a medium-energy state, i.e., it is qualified to discharge, the control unit initiates a two-stage composite decision-making process, as follows: The first stage is the immediate economic assessment. The control unit compares the current grid electricity price with the equivalent energy release cost of the energy storage unit. The equivalent energy release cost incorporates factors such as the energy cost of charging the energy storage, system losses, and equipment depreciation; it is an approximate cost per unit of energy release and is used to determine whether using energy storage for power supply is more economical than grid power supply. If the current grid electricity price is less than or equal to the equivalent energy release cost, it indicates that using energy storage for power supply is not economical. The control unit determines the power supply mode to be grid-independent, with the grid directly meeting the load demand, and the energy storage unit remaining in standby mode. If the current grid electricity price is greater than the equivalent energy release cost, it indicates that current energy release has an economic advantage, and the process proceeds to the second stage of decision-making.

[0057] The second phase involves forward-looking resource optimization, primarily considering the impact of current energy release on future peak power periods. The control unit, combining preset time period divisions or electricity price forecasts, determines whether the next scheduling cycle will be a peak power period. If the next scheduling cycle is a peak power period, to prioritize energy storage capacity during peak periods (when electricity prices are higher and peak shaving needs are more urgent), the control unit determines the power supply mode to remain grid-independent, reserving stored energy resources for subsequent peak power periods. If the next scheduling cycle is not a peak power period (it's a valley or flat power period), indicating no higher-yield discharge demand in the short term, the control unit determines the power supply mode to be a grid-storage unit collaborative power supply mode, generating scheduling instructions to allow energy storage units to participate in power supply with limited power based on their remaining capacity and economic objectives, working with the grid to meet load demands, thus achieving economic benefits in the current period while avoiding idle energy storage.

[0058] In one possible implementation, the method further includes: generating a switching power supply mode scheduling instruction when a mode switching trigger condition is detected; wherein the mode switching trigger condition includes: a change in electricity price period, a change in the energy release permit determination result of the energy storage unit, or a change in the total power demand of the electrical load exceeding a preset change threshold; obtaining the duration of operation of the current power supply mode since its start; determining whether the duration has reached a preset minimum mode dwell time threshold; if the duration has not reached the preset minimum mode dwell time threshold, prohibiting the execution of the switching power supply mode scheduling instruction and maintaining the current power supply mode; if the duration has reached the preset minimum mode dwell time threshold, allowing the execution of the switching power supply mode scheduling instruction.

[0059] In one embodiment, the power supply system operation method further includes a stability constraint mechanism for power supply mode switching, used to address the engineering challenge of frequent power supply mode switching in a short period of time due to short-term or minor fluctuations in external conditions such as electricity prices and loads during dynamic scheduling. Such frequent switching can accelerate the wear of actuators such as circuit breakers and contactors, shorten equipment lifespan, and may also cause voltage flicker and current surges on the power supply bus, affecting the stable operation of sensitive loads and the overall system stability.

[0060] This stability constraint mechanism, as an independent monitoring and arbitration process, runs in parallel with or after the core economic scheduling decision-making process. Its working logic is divided into three stages: triggering, checking, and adjudication, as detailed below: Phase 1: Mode Switching Trigger Condition Monitoring. The system continuously monitors predefined mode switching trigger conditions, capturing key changes in the scheduling environment, specifically including: 1. Changes in electricity price periods (e.g., switching from flat to peak electricity periods); 2. Changes in the energy release permit determination results of energy storage units (e.g., changing from a high-energy state to a medium-energy state, affecting the discharge capacity level); 3. Changes in the total power demand of the data center load exceeding a preset change threshold (significant increases or decreases in load power, exceeding the adaptability range of the current power supply mode). When any condition is met, the system recalculates based on the latest status information, generates a scheduling instruction proposal for switching energy supply modes, and clarifies the target energy supply mode.

[0061] Phase Two: Minimum Dwell Time Compliance Check. After generating the switching instruction proposal, it is not executed immediately, but a compliance check is initiated, with the core being a time-based verification. The control unit obtains the continuous operating time of the current power supply mode since the most recent start or switch and calls the preset minimum mode dwell time threshold. This threshold is set from the perspective of system stability and is the shortest operating time that any power supply mode must maintain after startup, used to filter non-persistent switching requests caused by parameter fluctuations and short-term volatility.

[0062] Phase Three: Execution and Decision of the Switching Command. The control unit compares the current mode's continuous operating time with a preset minimum mode dwell time threshold and makes a final decision: If the duration does not reach the threshold, the switching command proposal is prohibited from being executed, and the current power supply mode is maintained to avoid affecting system stability due to a forced switch caused by an excessively short mode operating time; if the duration reaches or exceeds the threshold, the switching command proposal is allowed to be executed. At this point, the current mode has been running stably for a sufficient time, the switching motivation is sufficient and persistent, and it will not pose a significant threat to system stability. The system executes the switching command to complete the power supply mode transition.

[0063] This stability constraint mechanism provides damping and de-jittering functions for the dispatching system, preventing the system from overreacting to minor disturbances, improving the inertia and robustness of dispatching decisions, effectively suppressing mode oscillations, and ensuring the long-term stability, equipment reliability, and power supply quality of the power supply system.

[0064] In one possible implementation, determining the power supply mode and generating dispatch instructions further includes: If the determined energy supply mode is an independent power supply mode for the energy storage unit or a coordinated power supply mode between the grid and the energy storage unit, then based on the total power demand and the determined energy supply mode, the target power supply of the energy storage unit in the current scheduling cycle is determined; the actual power supply of the energy storage unit in the previous scheduling cycle is obtained; the absolute value of the difference between the target power supply and the actual power supply in the previous scheduling cycle is calculated; it is determined whether the absolute value is greater than the product of the preset allowable power change rate and the preset scheduling cycle duration; if it is greater, when the target power supply is greater than the actual power supply in the previous scheduling cycle, the final power supply of the energy storage unit in the current scheduling cycle is determined as the actual power supply in the previous scheduling cycle. The target power supply is calculated by adding the product of the preset allowable power change rate and the preset scheduling period duration; or, when the target power supply is less than the actual power supply in the previous scheduling period, the final power supply of the energy storage unit in the current scheduling period is determined as the actual power supply in the previous scheduling period minus the product of the preset allowable power change rate and the preset scheduling period duration; if it is less than or equal to the target power supply, the final power supply of the energy storage unit in the current scheduling period is determined as the target power supply; the power supply of the grid is determined as the difference between the total power demand and the final power supply of the energy storage unit; and the scheduling instruction is generated based on the final power supply of the energy storage unit and the power supply of the grid.

[0065] In one implementation, the energy supply system operation method further includes a constraint mechanism to ensure stable power output. This mechanism is mainly applied to independent power supply modes for energy storage units and coordinated power supply modes between the grid and energy storage units. Its purpose is to prevent significant fluctuations in the output power of energy storage units between adjacent scheduling cycles, ensuring stable supply voltage and current, protecting power electronic equipment such as energy storage converters, and improving the quality of power supply to the load. This power smoothing constraint mechanism is an embedded post-processing step, automatically executed after the control unit determines the target supply power based on economic and reliability requirements. The specific process is as follows: Step 1: Compare the target power supply with historical actual power. When energy storage participates in power supply, the control unit determines the target power supply of the energy storage unit in the current scheduling cycle based on the total load power demand and the current power supply mode. For example, in independent power supply mode, the target power supply is consistent with the total load power demand; in coordinated power supply mode, the target power supply is determined according to the allocation strategy. Simultaneously, the control unit obtains the actual power supply of the energy storage unit in the previous scheduling cycle as a benchmark value for power changes.

[0066] Step 2: Power Change Rate Compliance Verification. The control unit calculates the absolute value of the difference between the target power supply and the actual power supply in the previous cycle to obtain the expected power change range, and compares it with the maximum allowable power change of the system. The maximum allowable power change range is obtained by multiplying the preset allowable power change rate by the preset scheduling cycle duration, representing the maximum allowable increase or decrease in the output power of the energy storage unit within a single scheduling cycle.

[0067] Step 3: Power ramping limitation under over-limit conditions. Based on the verification results, the control unit determines the final power supply of the energy storage unit in the current cycle: if the proposed power change does not exceed the allowable range, the target power supply is directly used as the final power supply; if the proposed power change exceeds the allowable range, the limit is applied according to the direction of change: when the target power supply is greater than the actual power supply of the previous cycle, the final power supply is limited to the actual power supply of the previous cycle plus the maximum allowable power change; when the target power supply is less than the actual power supply of the previous cycle, the final power supply is limited to the actual power supply of the previous cycle minus the maximum allowable power change.

[0068] Step 4: Grid Power Balancing and Dispatch Command Generation. After determining the final power supply of the energy storage unit, the control unit calculates the power supply required by the grid based on the difference between the total power demand and the final power supply of the energy storage unit, ensuring a balance between the total power supply and demand of the system. Subsequently, the control unit generates and issues corresponding dispatch commands based on the final power supply of the energy storage unit and the grid power supply, controlling the actions of circuit breakers, energy storage converters, and other actuators.

[0069] Through the aforementioned power smoothing constraint mechanism, the output power of the energy storage unit can change in a stable and controllable manner, avoiding electrical shocks caused by power surges, and effectively improving the stability and equipment safety of the energy supply system during dynamic operation.

[0070] The method provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0071] The overall architecture of the energy supply system described in this application is as follows: Figure 2 As shown, the system includes a control unit, an energy storage unit, a power grid, an emergency power supply unit, an execution unit, and a data center load.

[0072] The control unit is the core decision-making module of the system, used to realize unified monitoring, judgment and scheduling control of the operating status. It contains an input unit, a calculation unit and an output unit: The input unit is connected to the power grid, energy storage unit, emergency power supply unit and data center respectively, and collects the operating status information of each unit, including grid electricity price, available energy of energy storage, load power demand, etc., to provide data support for subsequent decision-making; The calculation unit is connected to the input unit and completes the determination of electricity price period, energy storage release permission and energy supply mode based on preset criteria to form the scheduling decision logic; The output unit is connected to the calculation unit and the execution unit, generates scheduling control instructions according to the calculation results and sends them to the execution unit.

[0073] The execution unit consists of several circuit breakers (circuit breaker 1 to circuit breaker N) or equivalent power path switching devices, which are electrically connected to the power grid, energy storage unit, emergency power supply unit, and data center, respectively, and are signal-connected to the output unit of the control unit. The execution unit receives dispatch control commands and realizes the conduction or disconnection of power paths through on / off operations, completing the switching of power supply modes such as grid power supply, energy storage power supply, and coordinated power supply, while realizing the electrical connection and isolation between the power supply side and the load side.

[0074] The energy storage unit is a molten salt energy storage system, mainly consisting of a molten salt energy storage system and a power generation system. It is the core energy buffer unit for peak shaving and valley filling: the molten salt energy storage system is electrically connected to the power grid, allowing it to obtain electrical energy from the grid during off-peak hours and convert it into thermal energy for storage; it is also electrically connected to the power generation system, providing thermal energy to the power generation system when needed; and it is simultaneously connected to the input unit signal, feeding back its own operating status information to the control unit. The power generation system converts the thermal energy provided by the molten salt energy storage system into electrical energy, and through the execution unit, it is electrically connected to the data center, participating in the power supply of the data center under the action of dispatch commands.

[0075] The power grid, serving as the primary power source, is electrically connected to the execution unit and provides conventional electrical energy input to the data center and energy storage units. Its operational status information (such as electricity price) is fed back to the input unit via signal connections, participating in dispatching decisions. The emergency power unit, electrically connected to the execution unit, provides auxiliary power to the data center under specific conditions such as power grid failures, ensuring continuous load operation. Its operational status information is fed back to the input unit, but it does not participate in peak shaving and valley filling dispatching decisions for the molten salt energy storage system; it only supplements the existing power supply system of the data center. The data center, as the core electrical load, obtains power through electrical connections to the power grid and energy storage units via the execution unit. Its operational load information is fed back to the input unit via signal connections, providing a basis for determining the operational status of the control unit.

[0076] With the above architecture, this system collects the operating information of each unit in a unified manner without changing the existing power supply structure of the data center. Based on the electricity price and energy storage status, it makes power supply mode decisions and realizes mode switching through the execution unit. It guides the energy storage unit to store energy during off-peak hours and release energy during peak hours, and finally realizes the orderly time shifting of electricity and peak shaving and valley filling, effectively improving the operating economy of the data center power supply system.

[0077] Based on the above system structure, this embodiment further provides a data center power supply system operation scheduling method based on molten salt energy storage, the operation process of which is as follows: Figure 3 and Figure 4 As shown in the figure. This method, without changing the existing power supply structure of the data center, determines and adjusts the operation mode of the molten salt energy storage system and the power generation system based on electricity price information and system operating status, so as to achieve orderly storage and release of energy, thereby achieving the purpose of peak shaving and valley filling, reducing electricity costs and improving the economic efficiency of the power supply system.

[0078] (a) Multi-level progressive judgment structure The operation scheduling method adopts a multi-level progressive decision structure. The decision logic includes at least the following: the first-level decision criterion is the electricity price status, used to determine the basic scheduling direction for the system to enter charging, releasing, or flat-rate operation; the second-level decision criterion is the energy status of the molten salt energy storage system, used to determine whether the energy storage system has the necessary conditions to participate in charging or releasing operations; the third-level decision criterion is the energy supply capacity of the energy storage unit, used to determine whether the energy storage system has independent energy supply capacity or only collaborative energy supply capacity in the current scheduling cycle. Based on the above decisions, power change rate constraints and minimum residence time constraints are introduced as operational stability constraints to suppress the impact of frequent switching of energy supply modes and power fluctuations on the power supply stability of the data center, forming a closed-loop operation scheduling logic without decision dead zones. Under the constraints of the above multi-level decision structure, the control unit executes the decisions at each level in a preset decision order in each discrete operation scheduling cycle, and generates corresponding energy supply scheduling instructions based on the decision results.

[0079] (II) Basic Data Collection for Scheduling Cycle In a discrete operation scheduling cycle k Inside, the control unit first obtains: the current electricity price signal. Total power demand of the data center during this scheduling cycle and the available energy state of molten salt energy storage systems. The total electricity demand is as described. This represents the overall energy demand of the data center during this period, including but not limited to the load of computing equipment, cooling system, and auxiliary equipment. The available energy state of the molten salt energy storage system is calculated based on the molten salt temperature, molten salt mass, and related thermophysical parameters in the molten salt energy storage system. It is output from the energy management module inside the energy storage unit to the control unit, characterizing the current energy level of the molten salt energy storage system.

[0080] (III) Determination of Electricity Price Period (Level 1 Determination) First, the control unit determines the off-peak electricity price threshold based on the preset electricity price. and preset peak electricity price threshold The current electricity price status is determined, and the operating period is divided into off-peak, flat, or peak periods, with the following determination relationship: During off-peak electricity hours During the period of normal electricity supply Peak electricity period When the current operating period is determined to be a low-voltage period, the control unit prioritizes triggering the charging determination process of the molten salt energy storage system. Under the premise of meeting system operation constraints, it controls the power grid to supply power to the data center and inputs electrical energy to the molten salt energy storage system for charging. When the current operating period is determined to be a peak period, the control unit prioritizes triggering the energy storage release determination process and determines its participation in energy supply based on the energy status and energy supply capacity of the energy storage system. When the current operating period is determined to be a flat period, the control unit enters the flat operation scheduling process and determines whether the molten salt energy storage system should participate in energy supply under the premise of meeting economic and operational constraints.

[0081] (iv) Determination of energy storage status and release permit (secondary determination) The control unit obtains the available thermal energy status of the molten salt energy storage system. The energy threshold is compared with a preset energy threshold to determine whether the energy storage system meets the conditions for energy release operation. The energy threshold satisfies:

[0082] in, E 1 represents the energy release operation threshold. E2 represents the energy protection threshold. The maximum allowable energy level, This is the minimum allowable energy level.

[0083] The rules for permitting the release of energy by energy storage units are as follows: when When the molten salt energy storage system is in a high-energy state, it is determined that the molten salt energy storage system has the conditions for energy release operation and is allowed to participate in energy supply dispatch; when At this time, the molten salt energy storage system is in a medium energy state, and the control unit allows the energy storage system to participate in cooperative power supply or maintain standby operation with limited power. When the energy storage unit reports an unavailable state, the molten salt energy storage system is in a low energy state. It is determined that the molten salt energy storage system does not meet the conditions for energy release operation, and the control unit limits its output, putting it into an energy protection or standby state.

[0084] (v) Energy supply mode and power balance (three-level judgment) The control center determines the total power demand of the data center during the scheduling cycle. The power supply modes of the energy storage system are determined. These modes include at least: a grid-connected power supply mode where the data center is powered solely by the power grid; an energy storage-connected power supply mode where the data center is powered by the molten salt energy storage system via a power generation system; and a collaborative power supply mode where the data center is powered jointly by the power grid and the molten salt energy storage system. The power distribution relationship of these modes satisfies the following:

[0085] in, Power supplied to the power grid This refers to the power supplied by the molten salt energy storage system to the data center via the power generation system. In this embodiment, it is defined as follows: For data centers in cycle k The total power requirement is used to characterize the overall power demand of the data center during this period, including the power load of computing equipment, cooling systems, and auxiliary equipment. The power supplied by the power grid to the data center is defined as... The energy storage unit provides power to the data center. The system satisfies the power balance relationship in any scheduling cycle.

[0086] The power allocation in each mode specifically satisfies: 1. Under grid power supply mode, the energy storage system does not participate in power supply. The data center is supplied with power from the power grid alone to meet its needs. ; 2. In energy storage power supply mode, the power grid withdraws from power supply, and the molten salt energy storage system independently supplies power to the data center through the power generation system. ,satisfy ; 3. In the collaborative power supply mode, the power grid and the molten salt energy storage system jointly supply power to the data center. and Together, they satisfy the above power balance relationship, and the power supply of the energy storage unit satisfies:

[0087] in, This represents the maximum power supply to the energy storage unit.

[0088] (vi) Time-segmented scheduling process 1. Overall Scheduling Process The overall scheduling process of the energy supply system is as follows: Figure 3 As shown, the control unit executes data acquisition, electricity price period determination, energy storage release permission determination, energy supply mode decision-making, and dispatch command issuance in discrete scheduling cycles. Within a scheduling cycle, the control unit first obtains the current grid electricity price, the total power demand of the data center, and the current available energy status of the energy storage unit; then it divides the current period into off-peak, flat, or peak periods and enters the corresponding decision branch.

[0089] (1) When the control unit determines that the current operating period is during off-peak electricity hours, it prioritizes triggering the energy storage system charging determination process. The control unit determines the available energy status of the molten salt energy storage system based on this information. Determine whether it meets the conditions for charging operation.

[0090] When the available energy state of the molten salt energy storage system meets When the molten salt energy storage system is deemed ready for charging operation, the control unit generates off-peak electricity charging scheduling commands, and the data center is powered by the grid. At this time, the system operation status satisfies:

[0091] in The power supply for the molten salt energy storage system. Under the action of the dispatch command, the execution unit maintains the power supply from the power grid to the data center, while controlling the power grid to input electrical energy into the molten salt energy storage system, so that the energy storage system is in a charging operation state, absorbing electrical energy and converting it into heat energy for storage through electric heating.

[0092] To avoid the risks of overcharging or overheating, this implementation method sets an upper limit constraint on the energy level during the charging process. If the energy storage unit reports that a safety constraint has been triggered, the control unit terminates the charging dispatch command and switches the molten salt energy storage system to standby mode. The control unit maintains power supply from the grid to the data center.

[0093] (2) When the control unit determines that the current operating period is a peak power period, the energy storage system release determination process is triggered first.

[0094] The control unit first determines the available energy state of the molten salt energy storage system. and preset energy threshold , Determine the energy release permission state. When the condition is met... When the conditions for energy release operation of the molten salt energy storage system are met, the control unit allows the energy storage system to participate in energy supply: when the conditions are met... If the energy storage unit reports an unavailable status, it is determined that the molten salt energy storage system does not meet the conditions for energy release operation. The control unit limits the output of the energy storage system to maintain power supply from the grid to the data center.

[0095] Based on the determination that the molten salt energy storage system meets the conditions for energy release operation, the control unit further determines whether the energy storage system meets the conditions for independent power supply operation. The independent operation conditions include not only whether the molten salt energy storage system can meet the power supply requirements of the data center at the instantaneous power level, but also whether it has the ability to continuously supply power independently within a predetermined time scale.

[0096] In this embodiment, the control unit first determines whether the maximum power supply that the molten salt energy storage system can provide through the power generation system meets the current total power demand of the data center. At that time, it was determined that the molten salt energy storage system had the basic conditions for independent power supply in terms of power.

[0097] Furthermore, the control unit is based on the available energy state of the molten salt energy storage system. and the current total power demand of data centers Estimate the sustainable operating time of the molten salt energy storage system in stand-alone power supply mode. It satisfies:

[0098] in, This is the minimum safe energy level reserved to ensure the safe operation of the energy storage system and meet subsequent dispatch needs. When the following conditions are met... At that time, it was determined that the molten salt system had the conditions for independent power supply operation, among which This is a preset minimum independent operating time threshold used to ensure the effectiveness of independent power supply in engineering applications.

[0099] When both the power criterion and duration criterion mentioned above are met simultaneously, the control unit generates an independent power supply scheduling command for the energy storage unit. The energy storage unit supplies power to the data center and controls the power grid to exit the power supply state. At this time, the system satisfies: ,

[0100] When the molten salt energy storage system meets the power criterion but not the independent operating time criterion, that is... and When the control unit determines that the molten salt energy storage system does not have the conditions for independent power supply operation, it generates a coordinated power supply scheduling command to enable the power grid and the molten salt energy storage system to jointly supply power to the data center, so as to avoid frequent switching of power supply mode due to short independent operation time, which would affect the stability of system operation.

[0101] 2. Power Flow Period Scheduling Subprocess When the current operating period is determined to be a period of normal power supply, the control unit enters the normal power supply operation scheduling process. The scheduling sub-process for the normal power supply period is as follows: Figure 4 As shown. Unlike peak and off-peak electricity periods, the operation and scheduling during off-peak electricity periods prioritizes economic efficiency while considering subsequent electricity price trends. Under the premise of meeting system operation constraints, the participation mode of the molten salt energy storage system is flexibly determined. Specifically, this includes: Step 1: The control unit first determines whether the molten salt energy storage system has the conditions for energy release. This determination is based on the available energy state of the molten salt energy storage system. With preset energy protection threshold .

[0102] When satisfied When the conditions for energy release operation of the molten salt energy storage system are met, it is determined that the system is ready to participate in energy supply dispatch; when the conditions are met... If the energy storage unit reports an unavailable status, it is determined that the molten salt energy storage system does not meet the conditions for energy release operation. The control unit prohibits it from participating in energy release operation, and the system continues to supply power to the data center from the grid. The energy storage unit is in stand-alone or energy protection mode.

[0103] Step 2: Based on the determination that the molten salt energy storage system meets the conditions for energy release operation, the control unit further determines the economic relationship between the current electricity price level and the energy release cost of the molten salt energy storage. This applies when the molten salt energy storage system is in a medium or high energy state. At that time, the control unit further compares the current electricity price. Equivalent energy release cost compared to molten salt energy storage systems .

[0104] When satisfied When the current power grid period is deemed to have the economic conditions for energy storage and release; when the conditions are met... If it is determined that the current power supply period does not meet the economic conditions for energy storage and release, the control unit will not trigger the energy storage and release command, and the system will supply power to the data center from the power grid, while the molten salt energy storage system will remain in standby mode.

[0105] When the conditions for the molten salt energy storage system to release energy are met simultaneously and the current electricity price is higher than the energy storage release cost, the control unit further makes a judgment based on the subsequent trend of electricity price changes.

[0106] Step 3: The control unit determines whether the next operating period is a peak electricity period based on electricity price forecasts or preset time period information.

[0107] When the next operating period is determined to be a peak power period, the control unit determines that energy storage capacity should be reserved for subsequent peak power periods. At this time, the molten salt energy storage system does not trigger the energy release command, and the system continues to supply power to the data center from the grid. The molten salt energy storage system maintains a constant energy level to ensure sufficient energy release capacity during peak power periods.

[0108] When it is determined that the next operating period is not a peak power period, the control unit determines that the current flat power period can reasonably utilize energy storage for power supply, and generates a dispatch control command for coordinated power supply between the power grid and the molten salt energy storage system. This allows the molten salt energy storage system to participate in the power supply of the data center according to the set power, and the power grid and the energy storage system jointly meet the total power demand of the data center. The power distribution relationship satisfies:

[0109] By implementing the above-mentioned peak-hour operation and scheduling strategy, the molten salt energy storage system can participate in energy supply only during peak-hour periods, provided that it is economical and does not affect subsequent peak-hour operation. This achieves orderly energy connection between peak-hour, peak-hour, and off-peak hours, avoids the unreasonable consumption of energy storage resources during non-critical periods, and thus improves the overall operational economy and scheduling rationality of the data center energy supply system.

[0110] After determining the power supply mode, the control unit generates corresponding scheduling control commands and switches the power path through the execution unit to achieve stable power supply to the data center and to charge, release, or shut down the molten salt energy storage system.

[0111] In the above-mentioned operation scheduling method, in order to ensure the stability of power supply to the data center and avoid the adverse effects of frequent switching of power supply mode on system operation, the present invention further introduces power supply stability constraints during the power supply mode switching process.

[0112] In this embodiment, the control unit updates the system operating status according to a preset discrete operation scheduling cycle. During the scheduling cycle... k Internally, the control unit is based on electricity price signals. Available energy state of molten salt energy storage system and total power requirements of data centers It completes the determination of the power supply mode and generates the corresponding scheduling and control commands.

[0113] When the control unit determines that the system has switched from the previous power supply mode to the current power supply mode, it records the entry time of this power supply mode. In subsequent scheduling processes, if at the current time... t satisfy:

[0114] The control unit maintains the current power supply mode and does not perform a power supply mode switching operation. The minimum dwell time limit is only allowed to be broken when system safety constraints or emergency operating conditions occur. This method avoids repeated switching of the power supply mode between adjacent dispatch cycles due to electricity price fluctuations or minor load changes, thereby improving the stability of system operation.

[0115] During the operation of the energy storage system in power supply, the control unit determines the target power supply of the molten salt energy storage system based on the current power supply mode. To avoid the adverse effects of rapid changes in energy storage power supply on the stability of data center power supply voltage and current, constraints are set on the changes in energy storage power supply within adjacent scheduling cycles to satisfy:

[0116] in, The upper limit of the power change rate is preset based on the dynamic response capability of the molten salt energy storage system and the power generation system. For molten salt energy storage systems during the dispatch cycle k Internal power supply capacity This refers to the duration of the scheduling cycle.

[0117] When the calculated target power supply exceeds the above power change constraint, the control unit limits the energy storage power supply to meet the power change rate constraint and the power balance relationship.

[0118] Under the premise of coordinating the power supply of the power grid With energy storage power supply This ensures a stable power supply to the data center.

[0119] In summary, through Figure 3 The illustrated overall scheduling process of the energy supply system begins with the control unit sequentially completing operations data acquisition, electricity price period determination, energy storage release permission determination, energy supply mode decision-making, and dispatch command issuance, using discrete scheduling cycles as units. Within a single scheduling cycle, the control unit first obtains the current grid electricity price, the total power demand of the data center, and the available energy status of the energy storage unit. Then, based on the electricity price, the operating period is divided into off-peak, flat, and peak periods, and each period enters its corresponding scheduling branch. During off-peak periods, the control unit determines whether to execute grid power supply and energy storage charging mode or grid-independent power supply mode based on the energy storage energy status. During peak periods, the control unit first determines whether the energy storage is in a low energy state, and then further determines whether the independent power supply conditions are met, in order to select energy storage independent power supply, grid and energy storage coordinated power supply, or grid-independent power supply mode. During flat periods, the control unit proceeds to... Figure 4 The fine-grained scheduling subprocess is shown.

[0120] exist Figure 4 In the process, the control unit first determines whether the energy storage unit is in a low-energy state. If the energy release conditions are not met, the independent power supply mode of the power grid is directly adopted. If the conditions are met, the current power grid price is compared with the equivalent energy release cost of the energy storage. If it is not economical, the independent power supply of the power grid is maintained. If it is economical, the control unit continues to determine whether the next scheduling cycle is a peak power period. If the next cycle is a peak power period, the energy storage capacity is retained and the power grid is maintained. If it is not a peak power period, the coordinated power supply mode of the power grid and the energy storage unit is adopted to achieve refined and rational scheduling of energy storage resources during the flat power period.

[0121] Using the above methods, without changing the existing power supply structure of the data center, the control unit uniformly collects the operating information of each unit. Based on the electricity price signal, the available energy status of the molten salt energy storage system, and the total power demand of the data center, it completes the determination of the power supply mode and generates scheduling instructions. This realizes the orderly connection of energy through off-peak electricity storage, peak electricity release, and flexible regulation of flat electricity, effectively improving the overall operating economy of the data center power supply system. At the same time, through minimum residence time constraints and power change rate constraints, the system effectively suppresses the impact of frequent power supply mode switching and power fluctuations on the power supply stability of the data center, ensuring power supply quality and equipment lifespan.

[0122] In summary, this application provides a method for operating an energy supply system. The energy supply system includes a control unit, an energy storage unit, a power grid, and electrical loads. The control unit collects basic system operation information, including the current grid electricity price, the total power demand of the electrical loads, and the current available energy status of the energy storage unit. Based on the current grid electricity price, the current electricity price period is determined. Based on the current available energy status, it is determined whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operations, serving as the energy release permitting result. Based on the electricity price period and the energy release permitting result, combined with the total power demand, the appropriate energy supply mode is determined, and a corresponding dispatch instruction is generated. By collecting basic information such as electricity price, load power demand, and available energy status of the energy storage, the method sequentially completes the determination of the electricity price period and the energy storage energy release permitting, and determines the energy supply mode and generates dispatch instructions based on the above results and load demand. By using a real-time closed-loop feedback mechanism and a hierarchical decision-making logic, the shortcomings of existing technology scheduling modes, such as rigidity and difficulty in responding to multi-dimensional real-time dynamic changes, are fundamentally overcome. Under the premise of ensuring the reliability of power supply to data centers, flexible, economical and adaptive optimized operation and management of energy storage systems are achieved, thereby effectively realizing peak shaving and valley filling and reducing the overall electricity cost of data centers.

[0123] Based on the same technical concept, this application also provides an energy supply system, which includes a control unit, an energy storage unit, a power grid, and electrical loads, such as... Figure 5 As shown, the control unit includes: The information acquisition module 501 is used to collect basic system operation information, including the current grid electricity price, the total power demand of the electrical load, and the current available energy status of the energy storage unit. The electricity price period determination module 502 is used to determine the current electricity price period based on the current grid electricity price; The energy release permit determination module 503 is used to determine whether the energy storage unit has the permit conditions and corresponding permit level to participate in energy release operation based on the current available energy state, and to use the energy release permit determination result as the result. The power supply scheduling module 504 is used to determine the current power supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and generate the corresponding scheduling instructions.

[0124] This application also provides an electronic device corresponding to the method provided in the foregoing embodiments. Please refer to... Figure 6 The diagram illustrates an electronic device provided by some embodiments of this application. The electronic device 20 may include: a processor 200, a memory 201, a bus 202, and a communication interface 203, wherein the processor 200, the communication interface 203, and the memory 201 are connected via the bus 202; the memory 201 stores a computer program that can run on the processor 200, and when the processor 200 runs the computer program, it executes the method provided by any of the foregoing embodiments of this application.

[0125] The memory 201 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one physical port (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network.

[0126] Bus 202 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. The memory 201 is used to store programs. After receiving an execution instruction, the processor 200 executes the program. The method disclosed in any of the foregoing embodiments of this application can be applied to the processor 200, or implemented by the processor 200.

[0127] The processor 200 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 200 or by instructions in software form. The processor 200 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 201. The processor 200 reads the information in memory 201 and, in conjunction with its hardware, completes the steps of the above method.

[0128] The electronic devices and methods provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods they employ, operate, or implement.

[0129] This application also provides a computer-readable storage medium corresponding to the method provided in the foregoing embodiments. Please refer to... Figure 7 The computer-readable storage medium shown is an optical disc 30, on which a computer program (i.e., a program product) is stored, which, when run by a processor, executes the methods provided in any of the foregoing embodiments.

[0130] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0131] The computer-readable storage medium provided in the above embodiments of this application and the method provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the applications stored therein.

[0132] It should be noted that the above embodiments are illustrative of this application and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0133] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0134] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for operating an energy supply system, characterized in that, The energy supply system includes a control unit, an energy storage unit, a power grid, and electrical loads. The method is executed by the control unit and includes: The system collects basic operating information, including the current grid electricity price, the total power demand of the electrical load, and the current available energy status of the energy storage unit. The current electricity price period is determined based on the current grid electricity price. Based on the current available energy status, determine whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operation, and use this as the energy release permitting determination result; Based on the electricity price period and the energy release permit determination results, combined with the total power demand, the current energy supply mode to be adopted is determined, and the corresponding dispatch instructions are generated.

2. The method as described in claim 1, characterized in that, When the electricity price period falls within a preset off-peak period, the system determines the appropriate energy supply mode based on the electricity price period, the energy release permit determination result, and the total power demand, and generates corresponding dispatch instructions, including: Determine whether the current available energy state of the energy storage unit is less than a preset maximum energy storage limit; If it is less than, then the energy supply mode is determined to be grid power supply and energy storage charging mode, and a dispatching command is generated to enable the grid to supply power to the load and enable the energy storage unit to enter the charging state. If the value is greater than or equal to the value, the power supply mode is determined to be the grid-independent power supply mode, and a dispatching command is generated to enable the grid to supply power to the load and to put the energy storage unit into standby mode.

3. The method as described in claim 1, characterized in that, When the electricity price period is a preset peak electricity period, the current energy supply mode to be adopted is determined based on the electricity price period and the energy release permit determination result, combined with the total power demand, and corresponding dispatch instructions are generated, including: If the energy release permission determination result indicates that the energy storage unit is in a preset low energy state, then the energy supply mode is determined to be the grid independent power supply mode, and a corresponding dispatch instruction is generated. If the energy release permission determination result is that the energy storage unit is in a preset high energy state or a preset medium energy state, then it is determined whether the energy storage unit meets the independent energy supply conditions. If the independent energy supply conditions are met, the energy supply mode is determined to be the independent power supply mode of the energy storage unit, and corresponding dispatch instructions are generated; if the independent energy supply conditions are not met, the energy supply mode is determined to be the coordinated power supply mode of the power grid and the energy storage unit, and corresponding dispatch instructions are generated.

4. The method as described in claim 3, characterized in that, The determination of whether the energy storage unit meets the independent power supply conditions includes: Determine whether the maximum output power of the energy storage unit is greater than or equal to the total power demand; If so, the duration of sustainable independent power supply of the energy storage unit is determined based on the current available energy state of the energy storage unit, the preset safe energy lower limit, and the total power demand. Determine whether the duration of sustainable independent power supply is greater than or equal to a preset minimum independent operating time threshold; if the duration of sustainable independent power supply is greater than or equal to the preset minimum independent operating time threshold, then the independent power supply condition is met; if the duration of sustainable independent power supply is less than the preset minimum independent operating time threshold, or the maximum output power of the energy storage unit is less than the total power demand, then the independent power supply condition is not met.

5. The method as described in claim 1, characterized in that, When the electricity price period is a preset flat electricity price period, the current energy supply mode to be adopted is determined based on the electricity price period and the energy release permit determination result, combined with the total power demand, and corresponding dispatch instructions are generated, including: If the energy release permission determination result indicates that the energy storage unit is in a preset low energy state, then the energy supply mode is determined to be the grid independent power supply mode, and a corresponding dispatch instruction is generated. If the energy release permit determination result indicates that the energy storage unit is in a preset high energy state or a preset medium energy state, then the current grid electricity price is compared with the equivalent energy release cost of the energy storage unit. If the current grid electricity price is less than or equal to the equivalent energy release cost, the control unit determines the energy supply mode as grid-independent power supply mode and generates corresponding dispatch instructions. If the current grid electricity price is greater than the equivalent energy release cost, then it is determined whether the next scheduling cycle is a peak power period; if the next scheduling cycle is a peak power period, then the energy supply mode is determined to be the grid independent power supply mode, and a corresponding scheduling instruction is generated; if the next scheduling cycle is not a peak power period, then the energy supply mode is determined to be the grid and energy storage unit collaborative power supply mode, and a corresponding scheduling instruction is generated.

6. The method as described in claim 1, characterized in that, The method further includes: When the mode switching trigger condition is detected to be met, a switching power supply mode scheduling command is generated; wherein, the mode switching trigger condition includes: a change in the electricity price period, a change in the energy release permission determination result of the energy storage unit, or a change in the total power demand of the electrical load exceeding a preset change threshold. Get the duration of the current power supply mode since it was started; Determine whether the duration has reached a preset minimum mode dwell time threshold; if the duration has not reached the preset minimum mode dwell time threshold, then prohibit the execution of the switching power supply mode scheduling instruction and maintain the current power supply mode; if the duration has reached the preset minimum mode dwell time threshold, then allow the execution of the switching power supply mode scheduling instruction.

7. The method as described in claim 1, characterized in that, The process of determining the power supply mode and generating dispatch instructions also includes: If the determined energy supply mode is an independent power supply mode for the energy storage unit or a coordinated power supply mode between the power grid and the energy storage unit, then based on the total power demand and the determined energy supply mode, the target power supply of the energy storage unit in the current scheduling cycle is determined. Obtain the actual power supply of the energy storage unit in the previous scheduling cycle; Calculate the absolute value of the difference between the target power supply and the actual power supply in the previous scheduling cycle; Determine whether the absolute value is greater than the product of the preset allowable power change rate and the preset scheduling cycle duration; If the target power supply is greater than the actual power supply of the previous scheduling cycle, the final power supply of the energy storage unit in the current scheduling cycle is determined as the actual power supply of the previous scheduling cycle plus the product of the preset allowable power change rate and the preset scheduling cycle duration; or, if the target power supply is less than the actual power supply of the previous scheduling cycle, the final power supply of the energy storage unit in the current scheduling cycle is determined as the actual power supply of the previous scheduling cycle minus the product of the preset allowable power change rate and the preset scheduling cycle duration. If it is less than or equal to, then the final power supply of the energy storage unit in the current scheduling cycle shall be determined as the target power supply. The power supply capacity of the power grid is determined as the difference between the total power demand and the final power supply capacity of the energy storage unit; The dispatch command is generated based on the final power supply of the energy storage unit and the power supply of the power grid.

8. The method as described in claim 1, characterized in that, The step of determining whether the energy storage unit meets the permitting conditions and corresponding permitting level for participating in energy release operation based on the current available energy state, as the energy release permitting determination result, includes: The current available energy state is compared with a preset energy release operation threshold and a preset energy protection threshold, wherein the energy release operation threshold is greater than the energy protection threshold. If the current available energy state is greater than or equal to the energy release operation threshold, then the energy storage unit is determined to be in a high energy state; If the current available energy state is greater than the energy protection threshold but less than the energy release operation threshold, then the energy storage unit is determined to be in a medium energy state. If the current available energy state is less than or equal to the energy protection threshold, the energy storage unit is determined to be in a low energy state.

9. The method as described in claim 1, characterized in that, The step of determining the current electricity price period based on the current grid electricity price includes: The current grid electricity price is compared with the preset off-peak electricity price threshold and the preset peak electricity price threshold; If the current grid electricity price is less than or equal to the off-peak electricity price threshold, it is determined that the current period is a preset off-peak electricity period; If the current grid electricity price is greater than the off-peak electricity price threshold and less than or equal to the peak electricity price threshold, then it is determined that the current period is a preset flat electricity period. If the current grid electricity price is greater than the peak electricity price threshold, it is determined that the current period is a preset peak electricity period.

10. An energy supply system, characterized in that, The energy supply system includes a control unit, an energy storage unit, a power grid, and electrical loads. The control unit includes: The information acquisition module is used to collect basic system operation information, including the current grid electricity price, the total power demand of the electrical load, and the current available energy status of the energy storage unit. The electricity price period determination module is used to determine the current electricity price period based on the current grid electricity price. The energy release permit determination module is used to determine whether the energy storage unit has the permit conditions and corresponding permit level to participate in energy release operation based on the current available energy status, and to use the energy release permit determination result as the result. The power supply scheduling module is used to determine the current power supply mode based on the electricity price period and the energy release permit determination result, combined with the total power demand, and generate the corresponding scheduling instructions.

11. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the method as claimed in any one of claims 1-9.

12. A computer-readable storage medium, characterized in that, It stores computer-readable instructions that can be executed by a processor to implement the method as described in any one of claims 1-9.

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