A High-Stability Control Method for Charge-Discharge Balance in Industrial and Commercial Energy Storage Systems

Abstract

This invention discloses a highly stable control method for the charge-discharge balance of industrial and commercial energy storage systems, relating to the field of energy storage control technology. The method includes: calculating the stable power supply required by the enterprise; analyzing the charge-discharge status of the energy storage system and the equipment connection status; calculating the minimum amount of power stored in the energy storage system; based on received maintenance outage notifications, analyzing the amount of power required to maintain the normal operation of the enterprise's equipment during the outage period, recording this as emergency power; assessing the importance of the equipment based on the relationship between the amount of power required for the normal operation of the enterprise's equipment, the workload completed, and the equipment operation; determining whether the stored power of the energy storage system is greater than the emergency power; if so, calculating the allocated power for various types of enterprise equipment. By analyzing the charge-discharge status of the energy storage system and the equipment connection status, a stable power supply to all equipment is ensured, guaranteeing the maximum utilization rate of the stored power and the normal operation of the energy storage system.

Description

Technical Field

[0001] This invention relates to the field of energy storage control technology, specifically to a highly stable control method for the charge and discharge balance of industrial and commercial energy storage systems. Background Technology

[0002] With socio-economic development and technological advancements, energy demand is increasing daily, and the transformation of the energy structure is becoming increasingly urgent. Against this backdrop, commercial and industrial energy storage projects have emerged. These projects aim to help commercial and industrial users reduce their electricity costs through peak-valley pricing strategies and energy storage technologies, while providing stable power supply and promoting the transformation and upgrading of the energy structure. The high stability of charging and discharging in commercial and industrial energy storage systems provides a fundamental basis for achieving stable power supply and energy conservation. However, due to varying realities, existing commercial and industrial energy storage systems suffer from unstable charging and discharging, and are prone to imbalances. Summary of the Invention

[0003] To address the aforementioned technical problems, a highly stable control method for charge and discharge balance in industrial and commercial energy storage systems is provided. This technical solution solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A highly stable control method for charge-discharge balance in industrial and commercial energy storage systems includes:

[0006] Analyze the types and quantities of equipment in the enterprise, and calculate the amount of electricity required for a stable power supply.

[0007] Based on the amount of electricity required for a stable power supply by the enterprise and the amount of electricity stored in the energy storage system, the charging and discharging status of the energy storage system and the equipment connection status are analyzed.

[0008] The analysis examines the electricity and time required for essential equipment to operate during a power outage, and calculates the minimum amount of electricity that the energy storage system can store. The essential equipment refers to equipment whose losses due to a preset downtime exceed a predetermined value.

[0009] Based on the received maintenance power outage notification, analyze the amount of electricity required to maintain the normal operation of the enterprise equipment during the power outage period, record it as emergency power, and determine whether the stored power of the energy storage system is greater than the emergency power. If not, charge the energy storage system at maximum power before the power outage, terminate the power supply of the energy storage system to the enterprise equipment, and keep the energy storage system at saturation before the power outage.

[0010] Assess the importance of the equipment based on the relationship between the electricity required for normal operation of the enterprise's equipment, the workload to be completed, and the operation of the equipment;

[0011] Determine whether the energy storage system's stored capacity is greater than the emergency power capacity. If so, calculate the allocated power capacity for each type of enterprise equipment based on the importance of the equipment and the energy storage system's stored capacity.

[0012] The system monitors various battery parameters in real time, and if an abnormal condition occurs, the energy storage system stops charging and discharging.

[0013] Based on the protection of energy storage system performance, the temperature of the energy storage system is controlled and regulated.

[0014] Preferably, the analysis of the types and quantities of enterprise equipment and the calculation of the stable power supply required by the enterprise includes the following steps:

[0015] Based on the amount of electricity required for stable operation of the equipment within a preset period, the equipment is divided into different categories;

[0016] Calculate the amount of electricity required for a stable power supply by the enterprise using the formula for stable power supply.

[0017] The formula for calculating stable power supply is as follows:

[0018] In the formula, A represents the amount of electricity required for a stable power supply to the enterprise within a preset period. The amount of electricity required for stable operation of this type of equipment is m represents the number of equipment types in the enterprise. For the required period The number of devices of a certain type, and the preset cycle refers to the time cycle for all operations to be completed by all devices working together.

[0019] Preferably, the analysis of the energy storage system's charging and discharging status and equipment connection status based on the enterprise's required stable power supply and the energy storage system's stored power includes the following steps:

[0020] Continuously monitor the fluctuations in grid voltage. If the grid voltage fluctuations deviate from the rated value by more than the preset value, analyze the stored energy of the energy storage system, allocate equipment to connect to the energy storage system, and charge the energy storage system at the same time.

[0021] If the stored capacity of the energy storage system is higher than the power required for the stable operation of all devices for a preset period, then all devices will be connected to the energy storage system. The preset period refers to the time required for the stored capacity of the energy storage system to be consumed to the emergency power at the rate of the difference between the power consumed by all devices in a unit of stable operation and the power charged by the energy storage system in a unit of time.

[0022] If the energy storage capacity of the energy storage system is lower than the energy required for the stable operation of all equipment for a preset period, then the importance of the equipment and the severity of damage caused by grid fluctuations to the equipment should be comprehensively analyzed to analyze the equipment connected to the energy storage system.

[0023] Assess the importance of different equipment and the extent of damage caused to the equipment by power grid fluctuations;

[0024] The analytic hierarchy process (AHP) is used to calculate the importance weight of equipment and the weight of the degree of damage caused to equipment by power grid fluctuations.

[0025] Calculate the overall equipment evaluation index using the formula for calculating the overall equipment evaluation index.

[0026] The formula for calculating the overall equipment evaluation index is as follows:

[0027] In the formula, B is the overall equipment evaluation index, x is the importance of the equipment, X is the weight of the importance of the equipment, y is the degree of damage caused by power grid fluctuations to the equipment, and Y is the weight of the degree of damage caused by power grid fluctuations to the equipment.

[0028] Based on the overall equipment evaluation index, equipment is selected from high to low. The selected equipment must meet the requirement that the energy storage capacity of the energy storage system is higher than the energy required for the selected equipment to operate stably for a preset period of time.

[0029] Preferably, the analysis of the electricity and time required for essential equipment to operate during a power outage, and the calculation of the minimum electricity to be stored by the energy storage system, includes the following steps:

[0030] Assess the necessity of the equipment based on the losses and potential risks caused by equipment downtime;

[0031] Based on the maintenance power outage notification, determine the duration of the power outage and the operating time of essential equipment;

[0032] The minimum amount of electricity that the energy storage system can store is calculated using the minimum energy calculation formula.

[0033] The formula for calculating the minimum battery level is as follows:

[0034] In the formula, C is the minimum power consumption, t is the operating time of the necessary equipment, and c is the minimum power consumption required for the normal operation of the necessary equipment.

[0035] Preferably, the assessment of equipment importance based on the relationship between the electricity required for normal operation of enterprise equipment, the workload to be completed, and equipment operation includes the following steps:

[0036] The ratio of the amount of work completed by the equipment during normal operation to the amount of electricity required is recorded as the efficiency.

[0037] If a task requires the cooperation of different devices, the task efficiency of the devices involved in completing the task is recorded as the ratio of the workload to the total power required to complete the task.

[0038] Determine whether the alternative equipment required to complete the task can be replaced by other equipment. If so, the task efficiency of the alternative equipment is halved.

[0039] Determine whether the equipment participates in completing different tasks. If so, the efficiency of the equipment is the average of the efficiency of participating in different tasks.

[0040] The importance of equipment is expressed in terms of its efficiency.

[0041] Preferably, the calculation of the allocated power for various types of enterprise equipment based on the importance of each type of enterprise equipment and the stored power of the energy storage system includes the following steps:

[0042] Based on the power required for the task, the energy storage system allocates power to the equipment and the task.

[0043] The average efficiency of all equipment required for the task is calculated and denoted as the efficiency of the task.

[0044] Prioritize tasks with higher efficiency. Based on the energy storage capacity of the energy storage system and the energy required for each task, use an integer programming model to determine the types and number of tasks to be performed using the energy storage capacity of the energy storage system.

[0045] Based on the types and quantities of tasks performed using the stored electricity of the energy storage system, the allocated electricity for various types of enterprise equipment is determined.

[0046] Preferably, the real-time monitoring of various battery parameters, and the subsequent cessation of charging and discharging by the energy storage system if an abnormal condition occurs in the battery, includes the following steps:

[0047] Assess any abnormal conditions that occur in the energy storage system. If the abnormal conditions affect the normal operation of the energy storage system, then stop charging and discharging the energy storage system.

[0048] If an abnormal condition occurs in a part of the energy storage system, the energy storage system will continue to charge and discharge except for the abnormal part.

[0049] Update the energy storage system equipment in real time, replace outdated hardware, and install the latest energy storage systems.

[0050] Preferably, the protection based on the performance of the energy storage system and the control and regulation of the temperature of the energy storage system include the following steps:

[0051] Real-time monitoring of the energy storage system's temperature, recording the system's operating efficiency at different temperatures;

[0052] Based on the operating efficiency of the energy storage system at different temperatures, the optimal operating temperature of the energy storage system is calculated.

[0053] Record the temperature rise of the energy storage system after different workloads and analyze the heat generation of the energy storage system.

[0054] Based on the optimal operating temperature of the energy storage system, the cooling effect of the cooling facilities, and the heat generation of the energy storage system, the workload of the energy storage system is planned to ensure that the difference between the operating temperature of the energy storage system operating according to the plan and the optimal operating temperature does not exceed the preset temperature.

[0055] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0056] By analyzing the charging and discharging status of the energy storage system and the equipment connection status, a stable power supply for all devices was ensured. By rationally planning the power allocation to different devices during power outages, the maximum utilization rate of the stored power and normal operation of the energy storage system were guaranteed. In addition, by assessing the importance of different devices, inefficient waste of stored power in the energy storage system was avoided, allowing the power to be used better to complete the work. The setting of emergency power allows the energy storage system to maintain normal operation of the equipment in the event of an emergency. Furthermore, the regulation of the energy storage system temperature can extend the life of the energy storage system and improve its performance. Attached Figure Description

[0057] Figure 1 This is a flowchart illustrating the high-stability control method for charge-discharge balance in industrial and commercial energy storage systems according to the present invention.

[0058] Figure 2 This is a flowchart illustrating the process of analyzing the types and quantities of enterprise equipment and calculating the amount of electricity required for a stable power supply in accordance with the present invention.

[0059] Figure 3 This is a flowchart illustrating the process of analyzing the charging and discharging of an energy storage system and the connection of equipment based on the amount of electricity required for a stable power supply to an enterprise and the amount of electricity stored in the energy storage system.

[0060] Figure 4 This is a flowchart illustrating the process of calculating the minimum amount of electricity stored in an energy storage system to analyze the electricity and time required for essential equipment to operate during a power outage in an enterprise.

[0061] Figure 5 This is a flowchart illustrating the process of assessing the importance of equipment based on the relationship between the power required for normal operation of enterprise equipment, the workload to be completed, and the operation of the equipment.

[0062] Figure 6 This is a schematic diagram illustrating the process of calculating the allocated power for various types of enterprise equipment based on the importance of each type of enterprise equipment and the power stored in the energy storage system, according to the present invention.

[0063] Figure 7 This is a schematic diagram illustrating the process of real-time monitoring of various battery parameters and stopping the charging and discharging of the energy storage system if an abnormal condition occurs in the battery, as per the present invention.

[0064] Figure 8 This is a schematic diagram illustrating the process of controlling and regulating the temperature of an energy storage system based on the performance protection of the energy storage system according to the present invention. Detailed Implementation

[0065] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0066] Reference Figure 1 As shown, a high-stability control method for charge-discharge balance in industrial and commercial energy storage systems includes:

[0067] Analyze the types and quantities of equipment in the enterprise, and calculate the amount of electricity required for a stable power supply.

[0068] Based on the amount of electricity required for a stable power supply by the enterprise and the amount of electricity stored in the energy storage system, the charging and discharging status of the energy storage system and the equipment connection status are analyzed.

[0069] The analysis examines the electricity and time required for essential equipment to operate during a power outage, and calculates the minimum amount of electricity that the energy storage system can store. The essential equipment refers to equipment whose losses due to a preset downtime exceed a predetermined value.

[0070] Based on the received maintenance power outage notification, analyze the amount of electricity required to maintain the normal operation of the enterprise equipment during the power outage period, record it as emergency power, and determine whether the stored power of the energy storage system is greater than the emergency power. If not, charge the energy storage system at maximum power before the power outage, terminate the power supply of the energy storage system to the enterprise equipment, and keep the energy storage system at saturation before the power outage.

[0071] Assess the importance of the equipment based on the relationship between the electricity required for normal operation of the enterprise's equipment, the workload to be completed, and the operation of the equipment;

[0072] Determine whether the energy storage system's stored capacity is greater than the emergency power capacity. If so, calculate the allocated power capacity for each type of enterprise equipment based on the importance of the equipment and the energy storage system's stored capacity.

[0073] The system monitors various battery parameters in real time, and if an abnormal condition occurs, the energy storage system stops charging and discharging.

[0074] Based on the protection of energy storage system performance, the temperature of the energy storage system is controlled and regulated.

[0075] Industrial and commercial energy storage systems are used to supply electricity to enterprises. Therefore, the charging and discharging balance of industrial and commercial energy storage systems mainly depends on the electricity consumption of enterprises. That is, the storage status of industrial and commercial energy storage systems must be consistent with the electricity consumption of enterprises. Therefore, in this solution, corresponding steps are set up to regulate industrial and commercial energy storage systems.

[0076] Reference Figure 2 As shown, analyzing the types and quantities of equipment in a company and calculating the stable power supply required by the company includes the following steps:

[0077] Based on the amount of electricity required for stable operation of the equipment within a preset period, the equipment is divided into different categories;

[0078] Calculate the amount of electricity required for a stable power supply by the enterprise using the formula for stable power supply.

[0079] The formula for calculating stable power supply is as follows:

[0080] In the formula, A represents the amount of electricity required for a stable power supply to the enterprise within a preset period. The amount of electricity required for stable operation of this type of equipment is m represents the number of equipment types in the enterprise. For the required period The number of devices of a certain type, and the preset cycle refers to the time cycle for all operations to be completed by all devices working together.

[0081] Enterprise electricity consumption has a certain periodicity. Typically, equipment will perform a series of operations within a preset cycle. These operations are repeated in different preset cycles, but there will be a certain error, that is, the operation of individual equipment will not occur. However, these errors are within the allowable range and therefore are not specially considered. In order to simplify the calculation, the equipment is classified and the electricity is calculated according to the classification. This allows for subsequent power analysis based on the electricity calculation.

[0082] Reference Figure 3 As shown, based on the enterprise's required stable power supply and the energy storage system's stored capacity, the analysis of the energy storage system's charging and discharging status and equipment connection status includes the following steps:

[0083] Continuously monitor the fluctuations in grid voltage. If the grid voltage fluctuations deviate from the rated value by more than the preset value, analyze the stored energy of the energy storage system, allocate equipment to connect to the energy storage system, and charge the energy storage system at the same time.

[0084] If the stored capacity of the energy storage system is higher than the power required for the stable operation of all devices for a preset period, then all devices will be connected to the energy storage system. The preset period refers to the time required for the stored capacity of the energy storage system to be consumed to the emergency power at the rate of the difference between the power consumed by all devices in a unit of stable operation and the power charged by the energy storage system in a unit of time.

[0085] If the energy storage capacity of the energy storage system is lower than the energy required for the stable operation of all equipment for a preset period, then the importance of the equipment and the severity of damage caused by grid fluctuations to the equipment should be comprehensively analyzed to analyze the equipment connected to the energy storage system.

[0086] Assess the importance of different equipment and the extent of damage caused to the equipment by power grid fluctuations;

[0087] The analytic hierarchy process (AHP) is used to calculate the importance weight of equipment and the weight of the degree of damage caused to equipment by power grid fluctuations.

[0088] Calculate the overall equipment evaluation index using the formula for calculating the overall equipment evaluation index.

[0089] The formula for calculating the overall equipment evaluation index is as follows:

[0090] In the formula, B is the overall equipment evaluation index, x is the importance of the equipment, X is the weight of the importance of the equipment, y is the degree of damage caused by power grid fluctuations to the equipment, and Y is the weight of the degree of damage caused by power grid fluctuations to the equipment.

[0091] Based on the overall equipment evaluation index, equipment is selected from high to low. The selected equipment must meet the requirement that the energy storage capacity of the energy storage system is higher than the energy required for the selected equipment to operate stably for a preset period of time.

[0092] Grid voltage fluctuations are characterized by short durations and high frequency. By monitoring grid voltage changes in real time, when voltage exceeds the rated value excessively and could impact equipment performance and lifespan, we promptly connect the energy storage system to prevent damage caused by grid voltage instability. When the energy storage system's power is insufficient, we assess the degree to which equipment is affected by voltage fluctuations and select equipment more sensitive to voltage changes to minimize losses.

[0093] Reference Figure 4 As shown, the analysis of the electricity and time required for essential equipment to operate during a power outage, and the calculation of the minimum amount of electricity to be stored by the energy storage system, includes the following steps:

[0094] Assess the necessity of the equipment based on the losses and potential risks caused by equipment downtime;

[0095] Based on the maintenance power outage notification, determine the duration of the power outage and the operating time of essential equipment;

[0096] The minimum amount of electricity that the energy storage system can store is calculated using the minimum energy calculation formula.

[0097] The formula for calculating the minimum battery level is as follows:

[0098] In the formula, C is the minimum power consumption, t is the operating time of the necessary equipment, and c is the minimum power consumption required for the normal operation of the necessary equipment.

[0099] To ensure that enterprise equipment can operate normally during power outages, emergency power needs to be stored in the energy storage system. This reduces the flexibility of the energy storage system, and the role of the compressed energy storage system is achieved by selecting the necessary equipment.

[0100] Reference Figure 5 As shown, assessing the importance of equipment, based on the relationship between the electricity required for normal operation of enterprise equipment, the workload to be completed, and equipment operation, includes the following steps:

[0101] The ratio of the amount of work completed by the equipment during normal operation to the amount of electricity required is recorded as the efficiency.

[0102] If a task requires the cooperation of different devices, the task efficiency of the devices involved in completing the task is recorded as the ratio of the workload to the total power required to complete the task.

[0103] Determine whether the alternative equipment required to complete the task can be replaced by other equipment. If so, the task efficiency of the alternative equipment is halved.

[0104] Determine whether the equipment participates in completing different tasks. If so, the efficiency of the equipment is the average of the efficiency of participating in different tasks.

[0105] The importance of equipment is expressed in terms of its efficiency.

[0106] The importance of equipment is used to calculate the overall equipment evaluation index. When connecting equipment, it is necessary to select equipment based on the ranking of the overall equipment evaluation index. Therefore, it is necessary to determine the importance of the equipment. When assessing the importance of equipment, the workload and substitutability of the equipment are evaluated. In this way, the importance of the equipment can be determined more reasonably.

[0107] Reference Figure 6 As shown, based on the importance of various types of enterprise equipment and the energy storage capacity of the energy storage system, the calculation of the allocated power for various types of enterprise equipment includes the following steps:

[0108] Based on the power required for the task, the energy storage system allocates power to the equipment and the task.

[0109] The average efficiency of all equipment required for the task is calculated and denoted as the efficiency of the task.

[0110] Prioritize tasks with higher efficiency. Based on the energy storage capacity of the energy storage system and the energy required for each task, use an integer programming model to determine the types and number of tasks to be performed using the energy storage capacity of the energy storage system.

[0111] Based on the types and quantities of tasks performed using the stored electricity of the energy storage system, the allocated electricity for various types of enterprise equipment is determined.

[0112] When calculating the power allocation for various types of enterprise equipment, it is necessary to allocate power accordingly based on the type and quantity of tasks performed. The determination of the type and quantity of tasks relies on an integer programming model, which operates as follows:

[0113] Integer programming models seek the optimal integer solution under linear conditions. The linear condition in integer programming is that the sum of the electricity required by the selected tasks is less than or equal to the stored electricity of the energy storage system, and the sum of the electricity required by the selected tasks should ideally be close to the stored electricity of the energy storage system.

[0114] Reference Figure 7 As shown, the system monitors various battery parameters in real time. If an abnormal condition occurs, the energy storage system stops charging and discharging, including the following steps:

[0115] Assess any abnormal conditions that occur in the energy storage system. If the abnormal conditions affect the normal operation of the energy storage system, then stop charging and discharging the energy storage system.

[0116] If an abnormal condition occurs in a part of the energy storage system, the energy storage system will continue to charge and discharge except for the abnormal part.

[0117] Update the energy storage system equipment in real time, replace outdated hardware, and install the latest energy storage systems.

[0118] Reference Figure 8 As shown, based on the protection of energy storage system performance, controlling and regulating the temperature of the energy storage system includes the following steps:

[0119] Real-time monitoring of the energy storage system's temperature, recording the system's operating efficiency at different temperatures;

[0120] Based on the operating efficiency of the energy storage system at different temperatures, the optimal operating temperature of the energy storage system is calculated.

[0121] Record the temperature rise of the energy storage system after different workloads and analyze the heat generation of the energy storage system.

[0122] Based on the optimal operating temperature of the energy storage system, the cooling effect of the cooling facilities, and the heat generation of the energy storage system, the workload of the energy storage system is planned to ensure that the difference between the operating temperature of the energy storage system operating according to the plan and the optimal operating temperature does not exceed the preset temperature.

[0123] High temperatures are common during the operation of energy storage systems, which can significantly impact their lifespan. To avoid this, adaptive adjustments are made to their operation to ensure they remain within a suitable temperature range, thereby extending their lifespan.

[0124] Furthermore, this solution also proposes a storage medium on which a computer-readable program is stored. When the computer-readable program is invoked, it executes the aforementioned high-stability control method for the charge-discharge balance of industrial and commercial energy storage systems.

[0125] It is understandable that the storage medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a DVD; or a semiconductor medium, such as a solid-state drive (SSD).

[0126] In summary, the advantages of this invention are as follows: by analyzing the charging and discharging status of the energy storage system and the device connection status, a stable power supply to all devices is ensured; by rationally planning the power allocation to different devices during power outages, the maximum utilization rate of the stored power and normal operation of the energy storage system are guaranteed; furthermore, by assessing the importance of different devices, inefficient waste of stored power in the energy storage system is avoided, allowing the power to be used better to complete the work; the setting of emergency power allows the energy storage system to maintain normal operation of the devices in the event of an emergency; in addition, the regulation of the energy storage system temperature can extend the lifespan of the energy storage system and improve its performance.

[0127] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A high-stability control method for charge-discharge balance of industrial and commercial energy storage systems, characterized by, The application comprises the following steps: analyzing the types and quantities of enterprise equipment and calculating the amount of power required for stable power supply of the enterprise; analyzing the charging and discharging conditions of the energy storage system and the equipment access conditions based on the amount of power required for stable power supply of the enterprise and the storage capacity of the energy storage system; analyzing the amount of power required for the operation of essential equipment during power failure of the enterprise and calculating the minimum amount of power stored in the energy storage system, wherein the essential equipment refers to equipment that causes losses exceeding a predetermined value due to shutdown for a preset time; based on the received maintenance power failure notice, analyzing the amount of power required to maintain normal operation of enterprise equipment during the power failure period, denoted as emergency power, and determining whether the storage capacity of the energy storage system is greater than the emergency power; if not, the energy storage system is charged at maximum power before the power failure, the power supply of the energy storage system to the enterprise equipment is terminated, and the amount of power of the energy storage system before the power failure is kept to reach a saturation state; evaluating the importance of the equipment based on the amount of power required for normal operation of the enterprise equipment and the amount of work completed and the relationship between equipment operation; determining whether the storage capacity of the energy storage system is greater than the emergency power; if yes, calculating the allocated power of each type of enterprise equipment based on the importance of each type of enterprise equipment and the storage capacity of the energy storage system; real-time monitoring of various parameters of the battery, and if the battery has an abnormal condition, the energy storage system stops charging and discharging; controlling and adjusting the temperature of the energy storage system based on the protection of the performance of the energy storage system; The step of analyzing the charging and discharging conditions of the energy storage system and the equipment access conditions based on the amount of power required for stable power supply of the enterprise and the storage capacity of the energy storage system comprises the following steps: continuously observing the fluctuation of the grid voltage, and if the grid voltage fluctuation deviates from the rated value by more than a preset value, analyzing the storage capacity of the energy storage system, distributing the equipment to access the energy storage system, and charging the energy storage system at the same time; if the storage capacity of the energy storage system is higher than the amount of power required for stable operation of all equipment for a preset period, all equipment is connected to the energy storage system, and the preset period refers to the time required for the current storage capacity of the energy storage system to be consumed at a speed difference between the amount of power consumed by all equipment for stable operation per unit time and the charging capacity of the energy storage system per unit time to the emergency power; if the storage capacity of the energy storage system is lower than the amount of power required for stable operation of all equipment for a preset period, comprehensively analyzing the importance of the equipment and the severity of the damage caused by the grid fluctuation to the equipment, and analyzing the equipment connected to the energy storage system; evaluating the importance of different equipment and the degree of damage caused by the grid fluctuation to the equipment; calculating the importance weight of the equipment and the degree weight of the damage caused by the grid fluctuation to the equipment by using the analytic hierarchy process; calculating the total evaluation index of the equipment by using the total evaluation index calculation formula of the equipment; The total evaluation index calculation formula of the equipment is as follows: In the formula, B is the total evaluation index of the equipment, x is the importance of the equipment, X is the importance weight of the equipment, y is the degree of damage caused by the grid fluctuation to the equipment, and Y is the degree weight of the damage caused by the grid fluctuation to the equipment. According to the total evaluation index of the equipment, the equipment is selected from high to low, and the selected equipment needs to meet the condition that the storage capacity of the energy storage system is higher than the amount of power required for stable operation of the selected equipment for a preset period.

2. The high stability control method for charge-discharge balancing of industrial and commercial energy storage systems according to claim 1, characterized in that, The step of analyzing the types and quantities of enterprise equipment and calculating the amount of power required for stable power supply of the enterprise comprises the following steps: based on the amount of power required for stable operation of the equipment within a preset period, the equipment is divided into different types; The stable power supply calculation formula is used to calculate the required stable power supply of the enterprise; The stable power supply calculation formula is as follows: In the formula, A represents the amount of electricity required for a stable power supply to the enterprise within a preset period. The amount of electricity required for stable operation of this type of equipment is m represents the number of equipment types in the enterprise. For the required period The number of devices of a certain type, and the preset cycle refers to the time cycle for all operations to be completed by all devices working together.

3. The high stability control method for charge-discharge balancing of industrial and commercial energy storage systems according to claim 2, characterized in that, The analysis of the required power and time of the essential equipment under the condition of power failure of the enterprise, and the calculation of the minimum power stored by the energy storage system include the following steps: Based on the loss and potential risk caused by the shutdown of the equipment, the essentiality of the equipment is evaluated; Based on the maintenance power failure notice, the duration of the power failure is determined, and the running time of the essential equipment is determined; The minimum power calculation formula is used to calculate the minimum power stored by the energy storage system; The minimum power calculation formula is as follows: In the formula, C is the minimum power, t is the running time of the essential equipment, and c is the minimum power required for the normal operation of the essential equipment.

4. The high stability control method for charge-discharge balancing of industrial and commercial energy storage systems according to claim 3, characterized in that, The evaluation of the importance of the equipment based on the relationship between the required power and the amount of work completed by the normal operation of the enterprise equipment and the operation of the equipment includes the following steps: The ratio of the amount of work completed by the normal operation of the equipment to the required power is recorded as the efficiency amount; If different equipment is required to complete a task, the task efficiency amount of the equipment participating in the completion of the task is recorded as the ratio of the amount of work completed to the total power required to complete the task; It is determined whether the alternative equipment required to complete the task can be replaced by other equipment, and if so, the task efficiency amount of the alternative equipment is halved; It is determined whether the equipment participates in the completion of different tasks, and if so, the efficiency amount of the equipment is the average of the efficiency amounts of the different tasks; The importance of the equipment is represented by the efficiency amount of the equipment.

5. The high stability control method for charge-discharge balancing of industrial and commercial energy storage systems according to claim 4, characterized in that, The calculation of the distribution power of various types of enterprise equipment based on the importance of the equipment and the storage power of the energy storage system includes the following steps: Based on the required power of the task, the energy storage system allocates power to the equipment and the task; The average of the efficiency amounts of all equipment required for the task is calculated and recorded as the efficiency amount of the task; Tasks with higher efficiency amounts are preferentially executed, and based on the storage power of the energy storage system and the power required for each task, an integer programming model is used to determine the type and number of tasks executed by the storage power of the energy storage system; Based on the type and number of tasks executed by the storage power of the energy storage system, the distribution power of various types of enterprise equipment is determined.

6. The high stability control method for charge-discharge balancing of industrial and commercial energy storage systems according to claim 5, characterized in that, The real-time monitoring of the parameters of the battery, and if the battery has an abnormal condition, the energy storage system stops charging and discharging includes the following steps: Evaluate the abnormal condition of the energy storage system, and if the abnormal condition affects the normal operation of the energy storage system, the energy storage system stops charging and discharging; If the energy storage system has a local abnormal condition, the energy storage system continues to charge and discharge except for the abnormal part; The equipment of the energy storage system is updated in real time, and the latest energy storage system is installed.

7. The high stability control method for charge-discharge balancing of industrial and commercial energy storage systems according to claim 6, characterized in that, The protection based on the performance of the energy storage system controls and adjusts the temperature of the energy storage system, which includes the following steps: Real-time monitoring of the temperature of the energy storage system, recording the working efficiency of the energy storage system under different temperatures; Based on the working efficiency of the energy storage system under different temperatures, the optimal working temperature of the energy storage system is calculated; Record the temperature rise of the energy storage system after different workloads, and analyze the heat production of the energy storage system; Based on the optimal working temperature of the energy storage system, the cooling effect of the cooling facility, and the heat generation of the energy storage system, the working amount of the energy storage system is planned, and the difference between the working temperature and the optimal working temperature of the energy storage system operated according to the plan does not exceed the preset temperature.

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