Energy storage system operation control method and device, equipment and storage medium

Abstract

The invention relates to the technical field of energy storage analysis, in particular to an energy storage system operation control method and device, equipment and a storage medium. The energy storage system operation control method comprises the following steps: when a state analysis result is that a power grid breaks down, analyzing a power grid dispatching requirement according to a power grid state and a preset power grid rated voltage to obtain target charging power; when the state analysis result is that the load gap appears in the power grid, analyzing the power grid state according to the power grid dispatching requirement and the preset available energy total amount to obtain the target charging power; generating a charging instruction according to the target charging power; when the state analysis result is that the power grid is impacted, analyzing the state of the power grid according to a preset discharge limiting condition, a preset discharge power reference and a preset first power threshold value to obtain a discharge instruction; by analyzing power grid faults, load gaps and power grid impact scenes, charging and discharging instructions of the energy storage system are generated according to conditions, and the stability of the power grid and the emergency capacity of the energy storage system are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage analysis, and particularly relates to an energy storage system operation control method, device, equipment and storage medium. BACKGROUND

[0002] The existing grid charging and discharging regulation technology is difficult to adapt to complex grid conditions, and has many shortcomings: in the grid fault scenario, the traditional strategy adopts fixed charging power, does not associate the actual state of the grid with the dynamic adjustment of the rated voltage, and is easy to cause the grid fluctuation to intensify or the energy storage equipment to overload; when dealing with load gaps, the grid dispatching requirements and the total amount of available energy are not combined for analysis, and energy distribution imbalance often occurs, resulting in energy waste or insufficient load supply; when responding to grid impact, there is a lack of multi-dimensional consideration of discharge limiting conditions, power reference and threshold, and only simple logic is used to generate discharge instructions, which is difficult to accurately match the performance of the equipment and is easy to cause the impact to be not timely suppressed or the equipment to be damaged; these problems result in low accuracy and poor adaptability of grid regulation, and cannot meet the demand for stable operation and efficient use of energy in diversified grid scenarios, so technical improvement is imminent. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the purpose of the present application is to provide an energy storage system operation control method, system, equipment and storage medium.

[0004] The first aspect of the present application provides an energy storage system operation control method, comprising: obtaining a grid state and analyzing the grid state to obtain a state analysis result; when the state analysis result is that the grid has a fault, obtaining a grid dispatching requirement; analyzing the grid dispatching requirement according to the grid state and a preset grid rated voltage to obtain a target charging power; when the state analysis result is that the grid has a load gap, analyzing the grid state according to the grid dispatching requirement and a preset total amount of available energy to obtain a target charging power; generating a charging instruction according to the target charging power; controlling the energy storage system to charge according to the charging instruction; when the state analysis result is that the grid has an impact, analyzing the grid state according to a preset discharge limiting condition, a preset discharge power reference and a preset first power threshold to obtain a discharge instruction; and controlling the energy storage system to discharge according to the charging instruction.

[0005] Further, the analysis of the grid dispatching requirement according to the grid state and the preset grid rated voltage to obtain the target charging power comprises: analyzing the grid dispatching requirement according to the grid state to obtain a charging current value; obtaining a grid point actual voltage from the grid state; performing difference calculation on the grid point actual voltage according to the grid rated voltage to obtain a voltage deviation; obtaining real-time reverse power data from the grid state; and calculating the voltage deviation, the real-time reverse power data and the charging current value to obtain the target charging power.

[0006] Further, the analysis of the grid state according to the grid scheduling requirement to obtain the charging current value comprises: obtaining distributed power output from the grid state; obtaining load power from the grid scheduling requirement; judging whether the distributed power output is less than the load power; when the distributed power output is less than the load power, generating the charging current value according to the preset energy storage battery rated capacity and the preset configuration parameter.

[0007] Further, the analysis of the grid state according to the grid scheduling requirement and the preset total amount of available energy to obtain the target charging power comprises: obtaining actual power load demand from the grid scheduling requirement; judging whether the actual power load demand is greater than the total amount of available energy; when the actual power load demand is greater than the total amount of available energy, obtaining distributed power actual discharge power and grid allowed input power from the grid state; analyzing the distributed power actual discharge power and the grid allowed input power according to the grid scheduling requirement to obtain the target charging power.

[0008] Further, the analysis of the grid state according to the grid scheduling requirement and the preset total amount of available energy to obtain the target charging power comprises: obtaining distributed power actual discharge power and grid allowed input power from the grid state; analyzing the distributed power actual discharge power and the grid allowed input power according to the grid scheduling requirement to obtain the target charging power. According to the peak value and the valley value, the load gap value is calculated to obtain the target charging power.

[0009] Further, the analysis of the grid state according to the preset discharge limit condition, the preset discharge power reference and the preset first power threshold to obtain the discharge instruction comprises: obtaining distributed power actual charging power from the grid state; obtaining energy storage state of charge; analyzing the distributed power actual charging power according to the discharge limit condition, the discharge power reference and the energy storage state of charge to obtain the target discharge power; analyzing the target discharge power according to the first power threshold and the preset second power threshold to obtain the discharge instruction.

[0010] Further, the analysis of the grid state according to the preset discharge limit condition, the preset discharge power reference and the preset first power threshold to obtain the discharge instruction comprises: judging whether the target discharge power is less than or equal to the first power threshold; when the target discharge power is less than or equal to the first power threshold, generating first energy storage information according to the target discharge power, the preset power coefficient and the preset distribution coefficient; generating a first charging pile type according to the first energy storage information; generating the discharge instruction according to the first charging pile type and the target discharge power. determining whether the target discharging power is greater than the first power threshold and less than or equal to the second power threshold; when the target discharging power is greater than the first power threshold and less than or equal to the second power threshold, generating second energy storage information according to the target discharging power, the power coefficient and the distribution coefficient; generating a second charging pile type according to the second energy storage information; generating a discharging instruction according to the second charging pile type and the target discharging power; determining whether the target discharging power is greater than the second power threshold; when the target discharging power is greater than the second power threshold, generating third energy storage information according to the target discharging power, the power coefficient and the distribution coefficient; generating a third charging pile type according to the third energy storage information; and generating a discharging instruction according to the third charging pile type and the target discharging power. The first energy storage information is low-power power consumption scene information, the second energy storage information is medium-power power consumption scene information, and the third energy storage information is high-power power consumption scene information.

[0011] The second aspect of the present application provides a kind of energy storage system operation control device, comprising: first analysis module, for obtaining grid state, and grid state is analyzed to obtain state analysis result;Data acquisition module is used to when state analysis result is grid fault, then obtain grid dispatching requirement;Second analysis module is used to according to grid state and preset grid rated voltage, grid dispatching requirement is analyzed to obtain target charging power;Third analysis module is used to when state analysis result is grid load gap, then according to grid dispatching requirement and preset total amount of available energy, grid state is analyzed to obtain target charging power;Instruction generation module is used to generate charging instruction according to target charging power;Charging module is used to control energy storage system charging according to charging instruction;Fourth analysis module is used to when state analysis result is grid impact, then according to preset discharge limit condition, preset discharge power benchmark and preset first power threshold, grid state is analyzed to obtain discharging instruction; Discharging module is used to control energy storage system discharging according to charging instruction.

[0012] The third aspect of the present application provides a kind of energy storage system operation control equipment, and the kind of energy storage system operation control equipment includes: memory and at least one processor, the memory has instruction;At least one the processor calls the instruction in the memory, to make the computer equipment execute the steps of the energy storage system operation control method of any one described above.

[0013] The fourth aspect of the present application provides a kind of computer readable storage medium, and the computer readable storage medium has instruction, the instruction is executed when processor and realizes the steps of the energy storage system operation control method of any one described above.

[0014] In the technical solution of the application, multi-dimensional data such as grid point voltage and energy storage state of charge are obtained from a grid state monitoring system, and classified control is combined with grid dispatching requirements: when the grid fails, the target charging power is calculated according to the grid state and the rated voltage of the grid, the dispatching demand is matched, the grid voltage is prevented from being continuously abnormal, and the power supply stability is ensured; when the load gap occurs, the power is generated according to the dispatching requirements and the total amount of available energy, the gap is accurately filled to prevent the grid from being powered off, and redundant energy supplement is avoided; when the grid is impacted, the instructions are generated according to the discharge limiting conditions, the excess power is smoothly released to stabilize the fluctuation, and the safety of the grid equipment is protected; the overall scheme covers the core problems of the grid, improves the control accuracy through multiple parameters, considers the power supply reliability, resource utilization rate and equipment safety, and enhances the operation stability and emergency response capability of the grid. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which: Figure 1 A first flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 2 A second flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 3 A third flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 4 A fourth flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 5 A fifth flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 6 A sixth flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 7 A seventh flowchart of a method for operating an energy storage system according to an embodiment of the present application; Figure 8 A structure diagram of a device for operating an energy storage system according to an embodiment of the present application; Figure 9 A structure diagram of a device for operating an energy storage system according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, if any, are used for distinguishing between similar objects talking about the embodiments and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of the terms so phrases of the like, e.g. "comprising", "including", "containing", "characterized by", "comprised of", "not excluding", "among other things", "comprising a" and the like, does not exclude the explicit listing of method steps or elements and / or the use of a "consisting of". It is to be understood that, in the description and in the claims of the present application, "comprising" is to be interpreted as comprising, but not limited to.

[0017] For the purpose of promoting an understanding of the principles of the present application, reference will now be made to the embodiments hereinafter described, and the attached drawings will further set forth and illustrate preferred embodiments of this application. It is understood that the terms used herein are for the purpose of describing particular embodiments and are not intended to limit the present application, and that it is intended to cover functional equivalents as well as modifications that are within the scope of the appended claims. Figure 1 One embodiment of the method for operating and controlling an energy storage system in the embodiments of the present application includes: 101. Obtain the grid state and analyze the grid state to obtain a state analysis result; In this embodiment, the grid state is obtained from a grid state monitoring system, and the grid state includes real-time voltage at the grid point, state of charge of the energy storage, grid frequency, current distributed power output, distributed power related power, user load related power, grid allowed input or output power, and real-time reverse power data. 102. When the state analysis result is that the grid has a fault, obtain the grid dispatching requirement; In this embodiment, the grid dispatching requirement includes actual power demand, user power usage pattern, load power parameter, power upper and lower limit constraint, voltage or frequency stability target, and energy storage device protection requirement. 103. Analyze the grid dispatching requirement according to the grid state and the preset grid rated voltage to obtain a target charging power; In this embodiment, the target charging power is generated by analyzing the dispatching requirement according to the grid state and the rated voltage, so that the charging operation is adapted to the dispatching requirement, voltage abnormality risk is avoided (such as preventing voltage drop during a fault), the actual situation of the grid is accurately adapted, power supply stability is ensured, resource waste caused by blind control is avoided, and the operation safety and control efficiency of the grid are improved. 104. When the state analysis result is that the grid has a load gap, analyze the grid state according to the grid dispatching requirement and the preset total amount of available energy to obtain a target charging power; In the embodiment, when the power grid has a load gap, the state of the power grid is analyzed according to the dispatching requirement and the total amount of available energy to generate a target charging power, so that the gap can be accurately filled, power failure and voltage instability caused by insufficient energy can be avoided, the total amount of available energy is not exceeded, redundant energy supplement is prevented from being wasted, power supply stability and resource efficient utilization are ensured, and the power grid load gap response capability is improved. 105. generating a charging instruction according to the target charging power; 106. controlling the energy storage system to charge according to the charging instruction; 107. when the state analysis result is that the power grid has an impact, the state of the power grid is analyzed according to the preset discharge limiting condition, the preset discharge power reference and the preset first power threshold to obtain a discharge instruction; 108. controlling the energy storage system to discharge according to the discharge instruction; In the embodiment, when the power grid has an impact, the state of the power grid is analyzed according to the preset discharge limiting condition, the power reference and the first power threshold to generate a discharge instruction, so that the surplus power can be smoothly released, the voltage and frequency fluctuations can be smoothed, and the equipment can be protected from damage caused by excessive discharge, and the waste of resources can be prevented, so that the power grid can be stably operated, and the accuracy and safety of the response to the impact scenario are improved. In the embodiment, the grid point voltage, energy storage state of charge and other multi-dimensional data are obtained from a power grid state monitoring system, and the power grid is controlled according to the dispatching requirement: when the power grid fails, the target charging power is calculated according to the state of the power grid and the rated voltage of the power grid, so that the dispatching requirement can be met and the voltage of the power grid can be prevented from being continuously abnormal, and the power supply stability can be ensured; when the load gap occurs, the power is generated according to the dispatching requirement and the total amount of available energy, so that the gap can be accurately filled to prevent the power grid from being powered off, and the waste of redundant energy supplement can be avoided; when the power grid has an impact, the instruction is generated according to the discharge limiting condition, so that the surplus power can be smoothly released to smooth the fluctuations, and the safety of the power grid equipment can be protected; the overall scheme not only covers the core problems of the power grid, but also improves the control accuracy through multiple parameters, and takes into account the power supply reliability, resource utilization rate and equipment safety, so as to enhance the operation stability and emergency response capability of the power grid.

[0018] Please refer to Figure 2 The second embodiment of the energy storage system operation control method in the embodiment of the application comprises: 201. analyzing the power grid dispatching requirement according to the state of the power grid to obtain a charging current value; In the embodiment, the power grid dispatching requirement includes a charging task in a specific scenario (such as resident community early peak energy supplement and industrial park energy storage charging), and the state of the power grid (such as the current distributed power output and energy storage state of charge) determines the executability of the dispatching requirement; the charging current value is obtained by analyzing the dispatching requirement according to the state of the power grid, which lays a foundation for subsequent power calculation; and the subsequent charging operation is consistent with the power grid planning; 202. obtaining a grid point actual voltage from the state of the power grid; 203、Calculate the voltage deviation by subtracting the actual voltage of the grid point from the rated voltage of the grid; In this embodiment, the actual voltage of the grid point (e.g., the real-time voltage of the residential grid point 215V) is obtained from the grid state monitoring system, and the rated voltage of the grid (single-phase 220V) is subtracted to obtain the voltage deviation = 215V - 220V = -5V (negative deviation represents a slight decrease in voltage, and the voltage deviation directly reflects the stability of the grid voltage. A voltage that is too low can cause household appliances to malfunction, and a voltage that is too high can easily burn out equipment. This data provides voltage safety constraints for subsequent power adjustment; 204、Obtain real-time reverse power data from the grid state; In this embodiment, real-time reverse power data (e.g., the real-time reverse power of a certain grid point 6kW) is extracted from the grid state. This data represents the power scale of distributed power sources (photovoltaic, wind power) that are transmitted back to the grid. High reverse power can cause grid flow disorder and frequency fluctuations (e.g., a large amount of photovoltaic output being transmitted back to the grid exceeds the grid's acceptance capacity), so it becomes a "power balance constraint" for power adjustment, ensuring that the charging operation does not exacerbate the power imbalance of the grid; 205、Calculate the target charging power based on the voltage deviation, real-time reverse power data, and charging current value; In this embodiment, the calculation logic of the target charging power is as follows: If the charging current value is 45A (corresponding to an initial power of about 10kW, 220V x 45A), the voltage deviation is -5V (slightly low), and the real-time reverse power is 6kW (moderate reverse power): When the current grid voltage is slightly low, maintaining a 10kW power charge may further lower the voltage, so the current needs to be adjusted downward based on the voltage deviation (e.g., to 40A). At the same time, the reverse power of 6kW needs to be partially consumed to balance the grid, so the final current is adjusted to 42A, and the target charging power = 215V x 42A ≈ 8.91kW - This avoids a persistent low voltage and consumes part of the reverse power. If the current grid voltage deviation is 3V (slightly high) and the real-time reverse power is 8kW (high reverse power): A slightly high voltage can tolerate higher charging power and needs to consume excess reverse power, so the current is adjusted to 50A, and the target charging power = 223V x 50A ≈ 11.15kW - This utilizes voltage redundancy to improve charging efficiency and balances the grid reverse power. This step makes the target charging power no longer a fixed value, but an optimized value that changes dynamically with the grid state, achieving dual adaptation of scheduling requirements and grid safety; In the embodiment, the charging current value is generated by combining the power grid state analysis and the scheduling requirement, laying the foundation for subsequent calculation and ensuring that the charging conforms to the power grid planning; the actual voltage deviation is calculated by obtaining the actual voltage, and the real-time reverse power is extracted, which respectively provide voltage safety and power balance constraints; finally, the target charging power is calculated to dynamically adapt to the power grid state; this scheme not only avoids voltage fluctuation and power flow disorder to ensure power grid safety, but also improves the regulation accuracy, does not waste resources, and is suitable for multiple scenarios, and has strong practicality. Please refer to Figure 3 The third embodiment of the energy storage system operation control method in the embodiment of the application comprises: 301, obtaining the distributed power output from the power grid state; In the embodiment, the distributed power output directly reflects the current power supply capacity of renewable energy and is the core index of the energy supply end; 302, obtaining the load power from the power grid scheduling requirement; In the embodiment, the load power of a specific period and region is extracted from the power grid scheduling requirement, which represents the actual demand of the energy consumption end of the power grid and reflects the current power load size; the acquisition of the two parameters provides a quantitative basis for subsequent supply-demand relationship judgment and avoids fuzzy regulation that deviates from the actual power; 303, judging whether the distributed power output is less than the load power; 304, when the distributed power output is less than the load power, generating a charging current value according to the preset rated capacity of the energy storage battery and the preset configuration parameter; In the embodiment, the distributed power output is 80kW, the load power is 150kW, and the supply-demand difference reaches 70kW (power gap); if the gap is not filled, it will cause unstable voltage of household appliances (such as air conditioner shutdown and light flickering) or power failure of industrial equipment, so the charging current generation link must be entered to fill the gap by energy storage; when the total distributed power output is 140kW (80kW photovoltaic power + 60kW wind power) and the load power is 120kW, the supply (140kW) is greater than the demand (120kW), and renewable energy can completely cover the power load, even with a surplus of 20kW; if the energy storage charging is started, it will cause redundant storage of electric energy (which needs to consume the service life of the energy storage) or superimposition of power grid load, so the regulation process needs to be terminated to avoid resource waste; In the embodiment, first, the distributed power output reflecting the renewable energy supply capacity and the load power representing the electricity demand are obtained from the grid state and the scheduling requirement, to provide accurate data support for supply and demand judgment and avoid fuzzy regulation; then, by comparing the clear power gap, only when the power supply is insufficient, the charging current is generated combined with the rated capacity and configuration parameters of the energy storage battery, which not only gradually reduces the gap by continuous energy supplement, prevents voltage instability of household appliances and power outage of industrial equipment, and improves power supply stability, but also avoids over-flow charging damage to energy storage equipment and prolongs the service life of the battery; at the same time, when the power supply is sufficient, the process is terminated to avoid energy redundancy waste, adapt to multiple scenarios, and have strong practicality.

[0019] Please refer to Figure 4 The fourth embodiment of the energy storage system operation control method in the embodiment of the application includes: 401, obtaining the actual electricity load demand from the grid scheduling requirement; In the embodiment, the grid scheduling requirement contains electricity planning in different periods and different regions, and the actual electricity load demand directly reflects the total size of the grid energy consumption end, which is the core basis for subsequent judgment of whether the grid energy is surplus; 402, judging whether the actual electricity load demand is greater than the total amount of available energy; 403, when the actual electricity load demand is greater than the total amount of available energy, the actual discharge power of the distributed power and the grid allowed input power are obtained from the grid state; In the embodiment, when the actual electricity load demand is greater than the total amount of available energy, it is determined that there is an energy gap, and if it is not supplemented by charging, it will lead to insufficient grid load supply and cause power outage and voltage instability of electrical equipment, so the subsequent regulation link needs to be entered; In the embodiment, when the actual electricity load demand is less than the total amount of available energy, the grid energy can meet or exceed the current electricity demand at this time, and there is no need to supplement energy by charging, so the regulation process is terminated to avoid equipment idling and energy waste caused by redundant energy supplement; 404, analyzing the actual discharge power of the distributed power and the grid allowed input power according to the grid scheduling requirement to obtain the target charging power; In the embodiment, the target charging power is obtained by analyzing the actual discharge power of the distributed power and the grid allowed input power according to the grid scheduling requirement; the energy gap can be accurately supplemented to prevent power outage and voltage instability, the grid failure probability is reduced within the grid bearing range, the residential and industrial scenarios are adapted, and the scheduling planning is also matched to improve the power supply reliability and manageability; In the embodiment, the actual power consumption load demand is obtained from the power grid dispatching requirement, the energy consumption scale is determined, and the core basis for supply and demand judgment is provided; then, the actual power consumption load demand is compared with the total amount of available energy to accurately screen the regulation and control scene; when the actual power consumption load demand is greater than the total amount of available energy, it is determined that there is an energy gap, and subsequent regulation is started to avoid power failure and voltage instability; the actual discharge power of the distributed power supply and the allowed input power of the power grid are analyzed according to the dispatching requirement, and the target charging power is generated; the scheme can accurately fill the energy gap, ensure stable power supply, control the charging power within the power grid bearing range to reduce the failure probability, adapt to multiple scenes such as residents and industries, conform to the dispatching plan, and improve the power grid power supply reliability and manageability.

[0020] Please refer to Figure 5 The fifth embodiment of the energy storage system operation control method in the embodiment of the application includes: 501. Analyzing the actual discharge power of the distributed power supply and the allowed input power of the power grid to obtain a load gap value; In the embodiment, the actual discharge power of the distributed power supply (such as the real-time output of the photovoltaic power station 200kW) reflects the current renewable energy supply capacity, and the allowed input power of the power grid (such as the external supplementary power that the power grid can accept 250kW) represents the maximum input load that the power grid can bear within the safe operation range; the load gap value calculation logic is: if the actual discharge power of the distributed power supply (150kW) < the allowed input power of the power grid (250kW), it indicates that the current power supply capacity cannot meet the potential load demand of the power grid, and the load gap value = the allowed input power of the power grid - the actual discharge power of the distributed power supply = 100kW (i.e. 100kW of power needs to be supplemented by charging to fill the gap); if the actual discharge power of the distributed power supply is greater than or equal to the allowed input power of the power grid, there is no load gap and no additional charging is needed. 502. Obtain the user power consumption rule from the power grid dispatching requirement; In the embodiment, the user power consumption rule covers the load changes in different time periods (such as the resident user's power consumption peak at 8-10am and 18-22pm, and the low valley at 0-6am; the industrial user's low valley at 12-14pm, and the peak in the morning and evening); 503. Feature extraction is performed on the user power consumption rule to obtain the peak and valley; In the embodiment, the peak (such as the resident's load of 80kW at 8pm) represents the period of highest power demand, and the valley (such as the load of 20kW at 3am) represents the period of lowest power demand; 504. Calculate the load gap value according to the peak and valley to obtain the target charging power; In the embodiment, the peak period regulation: if the load gap value is 30kW, and the current is in the peak of electricity (8pm), in order to avoid aggravating the power grid load, the target charging power needs to be reduced (such as 15kW), and the basic electricity of the user is preferentially guaranteed; the trough period regulation: if it is in the valley of electricity (3am), the power grid load pressure is small, the target charging power can be set according to the full load gap (30kW), which not only fills the gap, but also fully utilizes the idle capacity of the power grid in the trough period; the flat peak period regulation: if it is in the flat peak period (3pm), the target charging power is set according to 50%-80% of the load gap value (such as 20kW), which balances the power grid load and the gap filling demand; In the embodiment, the actual discharge power of the distributed power supply is compared with the allowed input power of the power grid first, and the load gap value is accurately calculated, which not only avoids blind charging to cause power grid overload, but also prevents insufficient charging to cause power supply gap, and lays a precise foundation for subsequent regulation; then, the target charging power of the power grid is dynamically adjusted according to the user electricity rule and the scene subdivision, which guarantees the stable operation of the power grid, and is suitable for different electricity habits of residents and industrial users, optimizes the electricity experience, adapts to multi-scene demand, and has high practicability and adaptability.

[0021] Please refer to Figure 6 The sixth embodiment of the energy storage system operation control method in the embodiment of the application includes: 601, obtaining the actual charging power of the distributed power supply from the state of the power grid; In the embodiment, the actual charging power of the distributed power supply is the real-time charging power (such as 15kW) of the distributed power supply (such as photovoltaic power and wind power), which directly reflects the excess power scale of the current power grid; if the charging power is too high, it means that the power grid has power surplus, which is easy to cause voltage surge, frequency fluctuation and other impact problems, and is a key basis for judging whether discharging is needed and the discharging scale; 602, obtaining the state of charge of the energy storage, and analyzing the actual charging power of the distributed power supply according to the discharging limit condition, the discharging power reference and the state of charge of the energy storage, to obtain the target discharging power; In the embodiment, the energy storage management system collects the energy storage state of charge SOC (such as 80%) of the energy storage battery, and the SOC is a core constraint index of the discharge capacity of the energy storage system (for example, the industry convention is that SOC < 20% is prohibited from discharging, SOC > 60% allows power discharge, and SOC > 80% allows full power discharge), which directly determines the feasibility and safety boundary of the discharge operation; the discharge limiting conditions include SOC constraints (such as SOC ≥ 70% for discharging) and device safety constraints (such as maximum discharge current and discharge duration limit); if the actual charging power of the distributed power supply is 15kW, but the energy storage state of charge SOC is 70% (higher than 60%), the target discharge power needs to be reduced (such as set to 5kW) to avoid damage to the energy storage; the discharge power reference is a preset normal discharge power threshold (such as 10kW, which is the normal discharge capacity of the energy storage system in a safe state), and if the actual charging power of the distributed power supply is 15kW and the energy storage state of charge SOC is 80% (satisfying full power discharge), the relationship between the charging power and the discharge reference needs to be determined, and when the actual charging power of the distributed power supply is 15kW > the discharge reference is 10kW, it means that the excess power of the power grid exceeds the normal discharge capacity, and the target discharge power can be set to 15kW (whether the device supports it needs to be confirmed), or set according to the reference 10kW (if the device has an upper limit); 603. Analyzing the target discharge power according to the first power threshold and a preset second power threshold to obtain a discharge instruction; In the embodiment, the target discharge power is analyzed according to the first power threshold and the second power threshold to generate a discharge instruction, which not only accurately adapts to the device to avoid resource waste and overload, but also ensures stable discharge to stabilize the power grid impact, and covers residential, commercial and industrial scenarios to improve the practicality of regulation and control. In the embodiment, the actual charging power of the distributed power supply is obtained from the state of the power grid to master the size of the excess power of the power grid, which provides a basis for discharge decision; then the target discharge power is calculated according to the energy storage state of charge, the discharge limiting conditions and the power reference to adapt to the discharge rule and ensure the safety of the energy storage device; finally, the discharge instruction is generated according to the first power threshold and the second power threshold to match the corresponding charging pile type; the scheme not only avoids device overload and resource waste, but also stabilizes discharge to stabilize the impact on the power grid, and covers multiple scenarios of residential, commercial and industrial, effectively balancing the safety of the power grid, device protection and energy utilization efficiency, and improving the practicality of regulation and control.

[0022] Please refer to Figure 7 A seventh embodiment of a kind of energy storage system operation control method in the embodiment of the application includes: 701. Determine whether the target discharge power is less than or equal to the first power threshold; 702. When the target discharge power is less than or equal to the first power threshold, generate first energy storage information according to the target discharge power, a preset power coefficient and a preset distribution coefficient. In the present embodiment, the first power threshold (such as 10 kW), when the target discharge power (such as 8 kW) is less than or equal to the first power threshold (such as 10 kW), then in combination with the target discharge power (such as 8 kW), the power coefficient (such as 0.9, used to correct equipment loss) and the distribution coefficient (such as 0.8, used to distribute the output of the energy storage module), the first energy storage information (such as generating a call for 9 kWh of energy storage capacity) is generated by the formula (such as energy storage information = target power × power coefficient ÷ distribution coefficient, specific to the system parameters), this step ensures that the energy storage output not only meets the discharge demand, but also considers equipment loss and multi-module distribution logic; 703、generate a first charging pile type according to the first energy storage information; In the present embodiment, the charging pile type is matched: according to the first energy storage information (the first energy storage information is low-power electricity scene information), the first charging pile type (such as a household single-phase 220V slow-charging pile, suitable for ≤10 kW power) is matched; 704、generate a discharge instruction according to the first charging pile type and the target discharge power; In the present embodiment, the discharge instruction is output: in combination with the first charging pile type and the 8 kW target power, the instruction (such as “enable household slow-charging pile, discharge at 8 kW constant power, duration according to energy storage capacity matching”) is generated 705、determine whether the target discharge power is greater than the first power threshold and less than or equal to the second power threshold; 706、when the target discharge power is greater than the first power threshold and less than or equal to the second power threshold, generate second energy storage information according to the target discharge power, the power coefficient and the distribution coefficient; In the present embodiment, the target discharge power (such as 15 kW), the second power threshold (such as 20 kW), when the target discharge power (such as 15 kW) is less than or equal to the second power threshold (such as 20 kW), then in combination with the power coefficient (0.9) and the distribution coefficient (0.8), the second energy storage information (the second energy storage information is medium-power electricity scene information; such as generating a call for 16.875 kWh of energy storage capacity) is calculated; 707、generate a second charging pile type according to the second energy storage information; In the present embodiment, according to the second energy storage information of the medium capacity demand, the second charging pile type (such as a commercial three-phase 380V fast-charging pile, suitable for 10~20 kW power) is matched; 708、generate a discharge instruction according to the second charging pile type and the target discharge power; In the present embodiment, the discharge instruction is output: in combination with the second charging pile type and the 15 kW target power, the instruction (such as “enable commercial fast-charging pile, discharge at 15 kW power”) is generated; 709、determine whether the target discharge power is greater than the second power threshold; In the present embodiment, the determination criteria of the target discharge power is divided into three intervals: ①≤10kW (low power interval), ②10kW~20kW (medium power interval), ③>20kW (high power interval), the core basis for setting the threshold is the performance parameters of different types of charging piles (such as household slow charging piles usually ≤10kW, commercial fast charging piles 10~20kW, industrial super-fast charging piles >20kW), to ensure that the power interval is accurately matched with the equipment capacity, and to avoid wasting resources by using large equipment for small power or causing overload damage by using small equipment for large power; 710、when the target discharge power is greater than the second power threshold, the third energy storage information is generated according to the target discharge power, the power coefficient and the distribution coefficient; In the present embodiment, if the target discharge power is 25kW, the third energy storage information is calculated (the third energy storage information is high-power electricity consumption scene information; such as generating a large energy storage capacity of 28.125kWh); 711、generate a third charging pile type according to the third energy storage information; In the present embodiment, the charging pile type is matched: the third charging pile type is matched according to the high-capacity demand third energy storage information (such as industrial super-fast charging pile, suitable for >20kW power); 712、generate a discharge instruction according to the third charging pile type and the target discharge power; In the present embodiment, the discharge instruction output is: "enable industrial super-fast charging pile, discharge at 25kW power, link multiple energy storage modules to output, and ensure power stability"; In the present embodiment, through the fine regulation and control of the three power intervals, the adaptability and reliability of the discharge instruction are improved; the low power interval, the medium power interval and the high power interval are divided by 10kW (the first power threshold) and 20kW (the second power threshold), to match the performance of different types of charging piles (household slow charging ≤10kW, commercial fast charging 10-20kW, industrial super-fast charging >20kW), to avoid wasting resources by using large equipment for small power or causing overload damage by using small equipment for large power; when calculating the energy storage information, the target discharge power, the power coefficient (to correct equipment loss) and the distribution coefficient (to optimize module output) are combined to ensure that the energy storage capacity accurately meets the demand; at the same time, the corresponding level charging pile is matched according to the energy storage information, and then the target power is combined to generate an instruction, the low power enables household slow charging pile, the medium power uses commercial fast charging pile, and the high power links industrial super-fast charging pile and multiple energy storage modules; the overall scheme realizes the deep adaptation of discharge power, energy storage resources and charging pile type, protects the safety of equipment, improves the efficiency of resource utilization, efficiently suppresses the impact on the power grid, adapts to multiple scenes such as residents, businesses and industries, and enhances the accuracy and practicality of power grid discharge regulation and control.

[0023] The above describes a method for operating a storage system according to an embodiment of the present application. Next, a device for operating a storage system according to an embodiment of the present application is described. Please refer to Figure 8 An embodiment of the device for operating a storage system according to the present application includes: A first analysis module 1 is configured to acquire a grid state and analyze the grid state to obtain a state analysis result. A data acquisition module 2 is configured to acquire a grid dispatch requirement when the state analysis result is that the grid has a fault. A second analysis module 3 is configured to analyze the grid dispatch requirement according to the grid state and a preset grid rated voltage to obtain a target charging power. A third analysis module 4 is configured to analyze the grid state according to the grid dispatch requirement and a preset total amount of available energy when the state analysis result is that the grid has a load gap to obtain a target charging power. An instruction generation module 5 is configured to generate a charging instruction according to the target charging power. A charging module 6 is configured to control the storage system to charge according to the charging instruction. A fourth analysis module 7 is configured to analyze the grid state according to a preset discharge limitation condition, a preset discharge power reference, and a preset first power threshold when the state analysis result is that the grid has an impact to obtain a discharge instruction. A discharge module 8 is configured to control the storage system to discharge according to the discharge instruction. In this embodiment, the grid point voltage, the state of charge of the storage system, and other multi-dimensional data are acquired from a grid state monitoring system, and the grid is controlled according to the grid dispatch requirement: when the grid has a fault, the target charging power is calculated according to the grid state and the grid rated voltage to meet the dispatch requirement and prevent the grid voltage from being continuously abnormal, thereby ensuring the stability of power supply; when the grid has a load gap, the power is generated according to the dispatch requirement and the total amount of available energy to accurately fill the gap and prevent the grid from being powered off, and to avoid waste of redundant energy supply; when the grid has an impact, the instruction is generated according to the discharge limitation condition to smoothly release the surplus power to stabilize fluctuations and to protect the safety of grid equipment; the overall scheme covers the core problems of the grid, improves the accuracy of control through multiple parameters, takes into account the power supply reliability, resource utilization rate, and equipment safety, and enhances the stability of grid operation and the ability to respond to emergencies.

[0024] Figure 9is a structural schematic diagram of an energy storage system operation control device provided by an embodiment of the present application. The energy storage system operation control device 900 can have great differences due to different configurations or performances, and can include one or more central processing units (CPUs) 910 (for example, one or more processors) and a memory 920, one or more storage media 930 (for example, one or more mass storage devices) storing application programs 933 or data 932. The memory 920 and the storage media 930 can be temporary storage or persistent storage. The programs stored in the storage media 930 can include one or more modules (not shown in the figure), and each module can include a series of instruction operations of the energy storage system operation control device 900. Further, the processor 910 can be configured to communicate with the storage media 930 and execute the series of instruction operations in the storage media 930 on the energy storage system operation control device 900 to implement the steps of the energy storage system operation control method provided by each method embodiment described above.

[0025] The energy storage system operation control device 900 can also include one or more power supplies 940, one or more wired or wireless network interfaces 950, one or more input / output interfaces 960, and / or one or more operating systems 931, such as Windows Server, MacOS X, Unix, Linux, FreeBSD, etc. Those skilled in the art can understand that the energy storage system operation control device 900 can include more or fewer components than those shown, or some components can be combined, or different components can be arranged. Figure 9 The energy storage system operation control device structure shown does not constitute a limitation on the energy storage system operation control device, and can include more or fewer components than those shown, or some components can be combined, or different components can be arranged.

[0026] The present application also provides a computer readable storage medium, which can be a non-volatile computer readable storage medium or a volatile computer readable storage medium. The computer readable storage medium stores instructions, and when the instructions are run on a computer, the computer executes the steps of the energy storage system operation control method.

[0027] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system or device, unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0028] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0029] Finally, it should be noted that: the above only for the preferred examples of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing examples, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of operating control of an energy storage system, characterized by, The method comprises the following steps: acquiring a power grid state and analyzing the power grid state to obtain a state analysis result; when the state analysis result is that the power grid has a fault, acquiring a power grid dispatching requirement; analyzing the power grid dispatching requirement according to the power grid state and a preset power grid rated voltage to obtain a target charging power; when the state analysis result is that the power grid has a load gap, analyzing the power grid state according to the power grid dispatching requirement and a preset total amount of available energy to obtain the target charging power; generating a charging instruction according to the target charging power; controlling the energy storage system to charge according to the charging instruction; when the state analysis result is that the power grid has a shock, analyzing the power grid state according to a preset discharge limiting condition, a preset discharge power reference and a preset first power threshold to obtain a discharge instruction; controlling the energy storage system to discharge according to the discharge instruction.

2. A method of operating a stored energy system as claimed in claim 1, wherein, The step of analyzing the power grid dispatching requirement according to the power grid state and the preset power grid rated voltage to obtain the target charging power comprises the following steps: analyzing the power grid dispatching requirement according to the power grid state to obtain a charging current value; acquiring a grid point actual voltage from the power grid state; performing a difference calculation on the grid point actual voltage according to the power grid rated voltage to obtain a voltage deviation; acquiring real-time reverse power data from the power grid state; calculating the voltage deviation, the real-time reverse power data and the charging current value to obtain the target charging power.

3. A method of operating a stored energy system as defined in claim 2, wherein, The step of analyzing the power grid dispatching requirement according to the power grid state to obtain the charging current value comprises the following steps: acquiring a distributed power output power from the power grid state; acquiring a load power from the power grid dispatching requirement; determining whether the distributed power output power is less than the load power; when the distributed power output power is less than the load power, generating the charging current value according to a preset energy storage battery rated capacity and a preset configuration parameter.

4. The method of claim 1, wherein the energy storage system is a flywheel energy storage system. The step of analyzing the power grid state according to the power grid dispatching requirement and the preset total amount of available energy to obtain the target charging power comprises the following steps: acquiring an actual power consumption load demand from the power grid dispatching requirement; determining whether the actual power consumption load demand is greater than the total amount of available energy; when the actual power consumption load demand is greater than the total amount of available energy, acquiring a distributed power actual discharge power and a power grid allowed input power from the power grid state; analyzing the distributed power actual discharge power and the power grid allowed input power according to the power grid dispatching requirement to obtain the target charging power.

5. A method of operating a stored energy system as defined in claim 4, wherein, The step of analyzing the distributed power actual discharge power and the power grid allowed input power according to the power grid dispatching requirement to obtain the target charging power comprises the following steps: analyzing the distributed power actual discharge power and the power grid allowed input power to obtain a load gap value; acquiring a user power consumption rule from the power grid dispatching requirement; extracting features of the user power consumption rule to obtain a peak value and a valley value; calculating the load gap value according to the peak value and the valley value to obtain the target charging power.

6. A method of operating a stored energy system as defined in claim 1, wherein, The step of analyzing the power grid state according to the preset discharge limiting condition, the preset discharge power reference and the preset first power threshold to obtain the discharge instruction comprises the following steps: acquiring a distributed power actual charging power from the power grid state; The energy storage state of charge is obtained, and the actual charging power of the distributed power supply is analyzed according to the discharge limit condition, the discharge power reference and the energy storage state of charge to obtain a target discharge power. The target discharge power is analyzed according to the first power threshold and the preset second power threshold to obtain a discharge instruction.

7. A method of operating a stored energy system as defined in claim 6, wherein, The analysis of the target discharge power according to the first power threshold and the preset second power threshold to obtain a discharge instruction comprises: determining whether the target discharge power is less than or equal to the first power threshold; when the target discharge power is less than or equal to the first power threshold, generating first energy storage information according to the target discharge power, a preset power coefficient and a preset distribution coefficient; generating a first charging pile type according to the first energy storage information; generating a discharge instruction according to the first charging pile type and the target discharge power; determining whether the target discharge power is greater than the first power threshold and less than or equal to the second power threshold; when the target discharge power is greater than the first power threshold and less than or equal to the second power threshold, generating second energy storage information according to the target discharge power, the power coefficient and the distribution coefficient; generating a second charging pile type according to the second energy storage information; generating a discharge instruction according to the second charging pile type and the target discharge power; determining whether the target discharge power is greater than the second power threshold; when the target discharge power is greater than the second power threshold, generating third energy storage information according to the target discharge power, the power coefficient and the distribution coefficient; generating a third charging pile type according to the third energy storage information; generating a discharge instruction according to the third charging pile type and the target discharge power; The first energy storage information is low-power power consumption scene information; the second energy storage information is medium-power power consumption scene information; and the third energy storage information is high-power power consumption scene information.

8. An energy storage system operation control device characterized by comprising: It comprises: a first analysis module for obtaining a power grid state and analyzing the power grid state to obtain a state analysis result; a data acquisition module for acquiring a power grid dispatching requirement when the state analysis result is that the power grid has a fault; a second analysis module for analyzing the power grid dispatching requirement according to the power grid state and a preset power grid rated voltage to obtain a target charging power; a third analysis module for analyzing the power grid state according to the power grid dispatching requirement and a preset total amount of available energy when the state analysis result is that the power grid has a load gap to obtain a target charging power; an instruction generation module for generating a charging instruction according to the target charging power; a charging module for controlling the energy storage system to charge according to the charging instruction; a fourth analysis module for analyzing the power grid state according to a preset discharge limit condition, a preset discharge power reference and a preset first power threshold when the state analysis result is that the power grid has an impact to obtain a discharge instruction; a discharging module for controlling the energy storage system to discharge according to the charging instruction.

9. An energy storage system operation control device characterized by comprising: The energy storage system operation control device comprises a memory and at least one processor, and the memory stores instructions; The at least one processor calls the instructions in the memory to enable the energy storage system operation control device to perform the steps of the energy storage system operation control method of any one of claims 1-7.

10. A computer-readable storage medium having stored thereon instructions, the computer-readable storage medium comprising: The instructions, when executed by the processor, implement the steps of the energy storage system operation control method of any one of claims 1-7.

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