Energy storage control system and method for solar power generation

Abstract

The invention belongs to the technical field of energy storage control of solar power generation, and particularly relates to an energy storage control system and method of solar power generation, and the system comprises a central processing unit, a photovoltaic power generation unit, an energy storage module unit, a control and scheduling unit and an inverter unit. Parameters such as the charging state and the battery temperature of the battery can be monitored, the problems of overcharge and overdischarge are avoided, the service life of the battery is prolonged, the long-term stability of the system is improved, the energy storage system can stably supply power, the influence of instantaneous load fluctuation on a power grid or user equipment is avoided, and the reliability and the safety of system operation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of solar power generation energy storage control, and in particular to a solar power generation energy storage control system and method thereof. Background Art

[0002] Solar energy is an emerging renewable energy source. With the development of production and technology, people have begun to convert solar energy into other forms of energy for use. Solar power generation has become a clean and environmentally friendly energy source and plays an increasingly important role.

[0003] However, a common problem at present is that since the solar power generation system is a new technology, there is still a simple combined control system in the energy storage control system. The separate components of the combined control system are incompatible with each other, and a smooth power supply cannot be achieved, which will cause instantaneous load fluctuations, thereby affecting the power grid or user equipment, reducing the reliability and safety of the system operation. Therefore, it is urgent to propose a solar power generation energy storage control system and method. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] Therefore, the purpose of the present invention is to provide a solar power generation energy storage control system and method thereof. By being equipped with a battery management system, it is possible to monitor battery charging status, battery temperature and other parameters, avoid problems such as overcharging and over-discharging, extend the battery life, and improve the long-term stability of the system. The energy storage system can also provide a stable power supply, avoid the impact of instantaneous load fluctuations on the power grid or user equipment, and improve the reliability and safety of system operation.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A solar energy storage control system, comprising:

[0008] The central processing unit, as the system control terminal, receives data information and issues action instructions to each unit;

[0009] A photovoltaic power generation unit, connected to the central processing unit, includes a photovoltaic module and a tracking module;

[0010] The energy storage module unit is connected to the central processing unit and includes an energy storage module and a battery management module;

[0011] A control and dispatching unit, connected to the central processing unit, includes an energy storage control module, a charging control module, a discharging control module and a communication module;

[0012] The inverter unit includes a photovoltaic inverter module and a bidirectional inverter module.

[0013] As a preferred solution of a solar power generation energy storage control system described in the present invention, the central processing unit includes an intelligent algorithm and an optimization control module, which is used to execute the intelligent algorithm to optimize the charging and discharging process, reduce energy waste, and maximize system benefits. The control strategy includes:

[0014] Load forecasting and scheduling optimization: Based on historical data and weather forecasts, predict solar power generation and power load, and adjust the charging and discharging strategy of the energy storage system in advance;

[0015] Electricity price response strategy: In combination with fluctuations in grid electricity prices, the energy storage system can flexibly choose to purchase electricity from the grid or supply electricity to the grid according to changes in electricity prices to reduce energy costs;

[0016] System health and optimized maintenance: Through long-term data accumulation, the system can automatically diagnose equipment failures and performance degradation problems, and make corresponding adjustments or warnings to improve system reliability.

[0017] As a preferred solution of a solar power generation energy storage control system described in the present invention, in order to ensure system safety, the central processing unit is connected to a system safety protection unit, and the system safety protection unit includes:

[0018] Overload protection: When the system load exceeds the set threshold, the system will automatically disconnect or reduce the load to prevent equipment damage;

[0019] Overtemperature protection: If the temperature of the battery and other hardware components is too high, the system will initiate cooling measures or stop working to prevent fire or equipment damage caused by overheating;

[0020] Overvoltage and overcurrent protection: monitor battery voltage and current to prevent the battery from overcharging or overdischarging.

[0021] As a preferred solution of a solar power generation energy storage control system described in the present invention, wherein: the photovoltaic module is used to convert sunlight into direct current using the photovoltaic effect, and multiple photovoltaic modules are combined into a photovoltaic array to increase the power generation capacity;

[0022] The tracking module is used to ensure that the photovoltaic system can always obtain the maximum power output under different lighting conditions, and to adjust the operating voltage and current of the photovoltaic array in real time to achieve maximum power output.

[0023] As a preferred solution of a solar power generation energy storage control system described in the present invention, wherein: the power storage module is used to store the electric energy generated by solar power;

[0024] The battery management module is responsible for real-time monitoring of the battery's power, charge and discharge status, and temperature parameters to ensure safe use of the battery and optimize its performance, and to prevent dangerous situations such as overcharging, over-discharging, and over-temperature.

[0025] As a preferred solution of a solar power generation energy storage control system described in the present invention, wherein: the energy storage control module is used to coordinate the energy flow between solar power generation and energy storage equipment to ensure that the battery is charged or discharged at the appropriate time;

[0026] The charging control module is used to start the charging mode when the solar power generation is greater than the actual power demand, and store the excess power in the battery;

[0027] The discharge control module is used to release the stored energy from the battery to meet the demand when the solar power generation is insufficient to meet the power demand;

[0028] The communication module is used to perform real-time data transmission, remote monitoring and maintenance.

[0029] As a preferred solution of a solar power generation energy storage control system described in the present invention, wherein: the photovoltaic inverter module is used to convert the direct current generated by the solar power generation system into alternating current so as to be connected to a power grid or household appliances for use;

[0030] The bidirectional inverter module is used to convert the electric energy stored in the battery into AC power and transmit it to the grid, or to obtain electric energy from the grid to supplement the battery when the system is configured to perform bidirectional power exchange with the grid.

[0031] A method for controlling energy storage of solar power generation comprises the following steps:

[0032] S1. Real-time monitoring and data collection:

[0033] Monitor photovoltaic power generation: monitor the power generation, output voltage, and current data of solar panels in real time to evaluate the current solar power generation status;

[0034] Monitor load demand: monitor the power demand at the load end and determine the current power consumption;

[0035] Monitor battery status: monitor battery power, voltage, and temperature information, and evaluate battery charge and discharge status and health status;

[0036] Collect environmental data: collect light intensity, temperature and other environmental factors to help the system determine power generation potential and battery charging needs;

[0037] S2, Maximum Power Point Tracking:

[0038] Start the MPPT algorithm: adjust the operating voltage of the photovoltaic panel according to the real-time light intensity and temperature to keep it at the maximum power output point at all times;

[0039] Adjust voltage and current: The MPPT controller dynamically adjusts the operating point of the photovoltaic array to ensure that the battery generates electricity under optimal working conditions;

[0040] Output power calculation: Calculate the maximum power output of the photovoltaic panel and use it for system load demand or energy storage;

[0041] S3, charging control:

[0042] Assess battery charge status: Check the battery's current charge level and start charging mode if the battery is not full and solar power generation exceeds the current load demand;

[0043] Battery charging management: According to the voltage and power status of the battery, the charging process is controlled by the battery management system (BMS) to prevent overcharging, overcurrent and overtemperature, ensure the safety of the charging process, and adjust the charging rate;

[0044] Select charging time: The system selects the most appropriate time to start charging based on solar power generation, load demand and remaining battery power;

[0045] S4, discharge control:

[0046] Evaluate battery discharge demand: When solar power generation is insufficient, the system evaluates whether the battery power is sufficient to supply power. If the battery power meets the demand, the system will start the discharge mode;

[0047] Battery discharge management: The discharge process is controlled by BMS to ensure that the battery is not over-discharged and damaged. At the same time, BMS can adjust the discharge rate according to the health of the battery to extend the life of the battery;

[0048] Load support: When the battery power is sufficient, the stored electric energy will be converted into AC power through the inverter to supply the load;

[0049] S5, grid interactive control:

[0050] Grid power exchange: In grid interaction mode, the system feeds the power of the energy storage battery back to the grid through a bidirectional inverter, or obtains power from the grid to supplement the energy storage;

[0051] Select the timing of feeding back to the grid: Based on the fluctuation of power prices and power demand of the grid, the system can decide whether to feed power back to the grid;

[0052] Bidirectional power flow: Bidirectional power flow is achieved between the energy storage system and the grid, ensuring that the system can operate stably when the grid power supply is insufficient, and achieving economic optimization by feeding back power when the grid power price is low;

[0053] S6. Load forecasting and intelligent dispatching:

[0054] Predicting electricity demand: Based on historical load data and weather forecasts, the system predicts electricity demand in the future. The system adjusts the energy storage strategy based on the prediction results to ensure that there is enough electricity to supply power during peak demand periods.

[0055] Adjust charging and discharging strategies: Intelligently schedule the charging and discharging process based on load demand forecasts and battery power;

[0056] S7. System optimization and adjustment:

[0057] Dynamically adjust control strategies: optimize charging and discharging strategies based on real-time data, historical data and load demand to maximize system efficiency;

[0058] Battery health management: Prevent battery failure or premature degradation by monitoring battery temperature, voltage and health status in real time;

[0059] System adaptive adjustment: The system adaptively adjusts the charging or discharging rate and battery usage strategy according to battery capacity, grid electricity price, and light change factors to achieve the best benefits of energy management.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] 1. Improve energy self-sufficiency:

[0062] Reduce dependence on the power grid: Through energy storage control, the solar power generation system can store excess electricity during the day for use at night or on cloudy days, thereby reducing dependence on the power grid and ensuring the stability of energy supply;

[0063] Ensure power reliability: When the power grid is out of power or the power supply is unstable, the energy storage system can serve as a backup power source to provide continuous power to ensure the normal operation of critical loads;

[0064] 2. Maximize solar energy utilization efficiency:

[0065] Optimize the charging and discharging process: Through the energy storage control system, the charging and discharging process of the battery can be intelligently managed to ensure that the battery is charged when there is excess solar power generation and the stored energy is released when the power demand is high, thus avoiding energy waste;

[0066] 3. Improve system stability and reliability:

[0067] Battery health management: Equipped with a battery management system that can monitor battery charging status, battery temperature and other parameters to avoid overcharging, over-discharging and other problems, extend the battery life and improve the long-term stability of the system;

[0068] Avoid load fluctuations: The energy storage system can stabilize the power supply, avoid the impact of instantaneous load fluctuations on the power grid or user equipment, and improve the reliability and safety of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0070] Figure 1 This is a block diagram of the energy storage control system module of the present invention;

[0071] Figure 2 It is a schematic diagram of the steps of the energy storage control system of the present invention. DETAILED DESCRIPTION

[0072] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0073] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0074] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0075] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0076] The present invention provides a solar energy storage control system. Figure 1-2 ,include:

[0077] The central processing unit, as the system control terminal, receives data information and issues action instructions to each unit;

[0078] A photovoltaic power generation unit, connected to the central processing unit, includes a photovoltaic module and a tracking module;

[0079] The energy storage module unit is connected to the central processing unit and includes an energy storage module and a battery management module;

[0080] A control and dispatching unit, connected to the central processing unit, includes an energy storage control module, a charging control module, a discharging control module and a communication module;

[0081] Inverter unit, including photovoltaic inverter module and bidirectional inverter module;

[0082] The central processing unit includes an intelligent algorithm and an optimization control module, which is used to implement the intelligent algorithm to optimize the charging and discharging process, reduce energy waste, and maximize system benefits. The control strategies include:

[0083] Load forecasting and scheduling optimization: Based on historical data and weather forecasts, predict solar power generation and power load, and adjust the charging and discharging strategy of the energy storage system in advance;

[0084] Electricity price response strategy: In combination with fluctuations in grid electricity prices, the energy storage system can flexibly choose to purchase electricity from the grid or supply electricity to the grid according to changes in electricity prices to reduce energy costs;

[0085] System health and optimized maintenance: Through long-term data accumulation, the system can automatically diagnose equipment failures and performance degradation problems, and make corresponding adjustments or early warnings to improve system reliability;

[0086] In order to ensure system security, the central processing unit is connected to a system security protection unit, which includes:

[0087] Overload protection: When the system load exceeds the set threshold, the system will automatically disconnect or reduce the load to prevent equipment damage;

[0088] Overtemperature protection: If the temperature of the battery and other hardware components is too high, the system will initiate cooling measures or stop working to prevent fire or equipment damage caused by overheating;

[0089] Overvoltage and overcurrent protection: monitor battery voltage and current to prevent the battery from overcharging or overdischarging;

[0090] Photovoltaic modules are used to convert sunlight into direct current electricity using the photovoltaic effect, and multiple photovoltaic modules are combined into a photovoltaic array to increase power generation capacity;

[0091] The tracking module is used to ensure that the photovoltaic system can always obtain the maximum power output under different lighting conditions, and adjust the working voltage and current of the photovoltaic array in real time to achieve the maximum power output;

[0092] The power storage module is used to store the electric energy generated by solar power;

[0093] The battery management module is responsible for real-time monitoring of the battery's power, charge and discharge status, and temperature parameters to ensure safe use of the battery and optimize performance, and to prevent dangerous situations such as overcharging, over-discharging, and over-temperature.

[0094] The energy storage control module is responsible for coordinating the energy flow between solar power generation and energy storage equipment to ensure that the battery is charged or discharged at the appropriate time;

[0095] The charging control module is used to start the charging mode when the solar power generation is greater than the actual power demand, and store the excess power in the battery;

[0096] The discharge control module is used to release the stored energy from the battery to meet the demand when the solar power generation is insufficient to meet the power demand;

[0097] The communication module is used to perform real-time data transmission, remote monitoring and maintenance;

[0098] The photovoltaic inverter module is used to convert the direct current generated by the solar power generation system into alternating current so that it can be connected to the power grid or household appliances for use;

[0099] The bidirectional inverter module is used to convert the electric energy stored in the battery into AC power and transmit it to the grid, or to obtain electric energy from the grid to supplement the battery when the system is configured to perform bidirectional power exchange with the grid.

[0100] A method for controlling energy storage of solar power generation, characterized by comprising the following steps:

[0101] S1. Real-time monitoring and data collection:

[0102] Monitor photovoltaic power generation: monitor the power generation, output voltage, and current data of solar panels in real time to evaluate the current solar power generation status;

[0103] Monitor load demand: monitor the power demand at the load end and determine the current power consumption;

[0104] Monitor battery status: monitor battery power, voltage, and temperature information, and evaluate battery charge and discharge status and health status;

[0105] Collect environmental data: collect light intensity, temperature and other environmental factors to help the system determine power generation potential and battery charging needs;

[0106] S2, Maximum Power Point Tracking:

[0107] Start the MPPT algorithm: adjust the operating voltage of the photovoltaic panel according to the real-time light intensity and temperature to keep it at the maximum power output point at all times;

[0108] Adjust voltage and current: The MPPT controller dynamically adjusts the operating point of the photovoltaic array to ensure that the battery generates electricity under optimal working conditions;

[0109] Output power calculation: Calculate the maximum power output of the photovoltaic panel and use it for system load demand or energy storage;

[0110] S3, charging control:

[0111] Assess battery charge status: Check the battery's current charge level and start charging mode if the battery is not full and solar power generation exceeds the current load demand;

[0112] Battery charging management: According to the voltage and power status of the battery, the charging process is controlled by the battery management system (BMS) to prevent overcharging, overcurrent and overtemperature, ensure the safety of the charging process, and adjust the charging rate;

[0113] Select charging time: The system selects the most appropriate time to start charging based on solar power generation, load demand and remaining battery power;

[0114] S4, discharge control:

[0115] Evaluate battery discharge demand: When solar power generation is insufficient, the system evaluates whether the battery power is sufficient to supply power. If the battery power meets the demand, the system will start the discharge mode;

[0116] Battery discharge management: The discharge process is controlled by BMS to ensure that the battery is not over-discharged and damaged. At the same time, BMS can adjust the discharge rate according to the health of the battery to extend the life of the battery;

[0117] Load support: When the battery power is sufficient, the stored electric energy will be converted into AC power through the inverter to supply the load;

[0118] S5, grid interactive control:

[0119] Grid power exchange: In grid interaction mode, the system feeds the power of the energy storage battery back to the grid through a bidirectional inverter, or obtains power from the grid to supplement the energy storage;

[0120] Select the timing of feeding back to the grid: Based on the fluctuation of power prices and power demand of the grid, the system can decide whether to feed power back to the grid;

[0121] Bidirectional power flow: Bidirectional power flow is achieved between the energy storage system and the grid, ensuring that the system can operate stably when the grid power supply is insufficient, and achieving economic optimization by feeding back power when the grid power price is low;

[0122] S6. Load forecasting and intelligent dispatching:

[0123] Predicting electricity demand: Based on historical load data and weather forecasts, the system predicts electricity demand in the future. The system adjusts the energy storage strategy based on the prediction results to ensure that there is enough electricity to supply power during peak demand periods.

[0124] Adjust charging and discharging strategies: Intelligently schedule the charging and discharging process based on load demand forecasts and battery power;

[0125] S7. System optimization and adjustment:

[0126] Dynamically adjust control strategies: optimize charging and discharging strategies based on real-time data, historical data and load demand to maximize system efficiency;

[0127] Battery health management: Prevent battery failure or premature degradation by monitoring battery temperature, voltage and health status in real time;

[0128] System adaptive adjustment: The system adaptively adjusts the charging or discharging rate and battery usage strategy according to battery capacity, grid electricity price, and light change factors to achieve the best benefits of energy management.

[0129] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A solar energy storage control system, characterized in that: include: The central processing unit, as the system control terminal, receives data information and issues action instructions to each unit; A photovoltaic power generation unit, connected to the central processing unit, includes a photovoltaic module and a tracking module; The energy storage module unit is connected to the central processing unit and includes an energy storage module and a battery management module; A control and dispatching unit, connected to the central processing unit, including an energy storage control module, a charging control module, a discharging control module and a communication module; The inverter unit includes a photovoltaic inverter module and a bidirectional inverter module.

2. A solar power generation energy storage control system according to claim 1, characterized in that: The central processing unit includes an intelligent algorithm and an optimization control module, which is used to implement the intelligent algorithm to optimize the charging and discharging process, reduce energy waste, and maximize system benefits. The control strategy includes: Load forecasting and scheduling optimization: Based on historical data and weather forecasts, predict solar power generation and power load, and adjust the charging and discharging strategy of the energy storage system in advance; Electricity price response strategy: In combination with fluctuations in grid electricity prices, the energy storage system can flexibly choose to purchase electricity from the grid or supply electricity to the grid according to changes in electricity prices to reduce energy costs; System health and optimized maintenance: Through long-term data accumulation, the system can automatically diagnose equipment failures and performance degradation problems, and make corresponding adjustments or warnings to improve system reliability.

3. A solar power generation energy storage control system according to claim 2, characterized in that: In order to ensure system security, the central processing unit is connected to a system security protection unit, which includes: Overload protection: When the system load exceeds the set threshold, the system will automatically disconnect or reduce the load to prevent equipment damage; Overtemperature protection: If the temperature of the battery and other hardware components is too high, the system will initiate cooling measures or stop working to prevent fire or equipment damage caused by overheating; Overvoltage and overcurrent protection: monitor battery voltage and current to prevent the battery from overcharging or overdischarging.

4. A solar power generation energy storage control system according to claim 3, characterized in that: The photovoltaic module is used to convert sunlight into direct current electricity using the photovoltaic effect, and multiple photovoltaic modules are combined into a photovoltaic array to increase the power generation capacity; The tracking module is used to ensure that the photovoltaic system can always obtain the maximum power output under different lighting conditions, and to adjust the operating voltage and current of the photovoltaic array in real time to achieve maximum power output.

5. A solar power generation energy storage control system according to claim 4, characterized in that: The power storage module is used to store the electric energy generated by solar power; The battery management module is responsible for real-time monitoring of the battery's power, charge and discharge status, and temperature parameters to ensure safe use of the battery and optimize its performance, and to prevent dangerous situations such as overcharging, over-discharging, and over-temperature.

6. A solar power generation energy storage control system according to claim 5, characterized in that: The energy storage control module is used to coordinate the energy flow between solar power generation and energy storage equipment to ensure that the battery is charged or discharged at the appropriate time; The charging control module is used to start the charging mode when the solar power generation is greater than the actual power demand, and store the excess power in the battery; The discharge control module is used to release the stored energy from the battery to meet the demand when the solar power generation is insufficient to meet the power demand; The communication module is used to perform real-time data transmission, remote monitoring and maintenance.

7. A solar power generation energy storage control system according to claim 6, characterized in that: The photovoltaic inverter module is used to convert the direct current generated by the solar power generation system into alternating current so as to be connected to the power grid or household appliances for use; The bidirectional inverter module is used to convert the electric energy stored in the battery into AC power and transmit it to the grid, or to obtain electric energy from the grid to supplement the battery when the system is configured to perform bidirectional power exchange with the grid.

8. A method for controlling energy storage of solar power generation, characterized in that: The steps include: S1. Real-time monitoring and data collection: Monitor photovoltaic power generation: monitor the power generation, output voltage, and current data of solar panels in real time to evaluate the current solar power generation status; Monitor load demand: monitor the power demand at the load end and determine the current power consumption; Monitor battery status: monitor battery power, voltage, and temperature information, and evaluate battery charge and discharge status and health status; Collect environmental data: collect light intensity, temperature and other environmental factors to help the system determine power generation potential and battery charging needs; S2, Maximum Power Point Tracking: Start the MPPT algorithm: adjust the operating voltage of the photovoltaic panel according to the real-time light intensity and temperature to keep it at the maximum power output point at all times; Adjust voltage and current: The MPPT controller dynamically adjusts the operating point of the photovoltaic array to ensure that the battery generates electricity under optimal working conditions; Output power calculation: Calculate the maximum power output of the photovoltaic panel and use it for system load demand or energy storage; S3, charging control: Assess battery charge status: Check the battery's current charge level and start charging mode if the battery is not full and solar power generation exceeds the current load demand; Battery charging management: According to the voltage and power status of the battery, the charging process is controlled by the battery management system (BMS) to prevent overcharging, overcurrent and overtemperature, ensure the safety of the charging process, and adjust the charging rate; Select charging time: The system selects the most appropriate time to start charging based on solar power generation, load demand and remaining battery power; S4, discharge control: Evaluate battery discharge demand: When solar power generation is insufficient, the system evaluates whether the battery power is sufficient to supply power. If the battery power meets the demand, the system will start the discharge mode; Battery discharge management: The discharge process is controlled by BMS to ensure that the battery is not over-discharged and damaged. At the same time, BMS can adjust the discharge rate according to the health of the battery to extend the life of the battery; Load support: When the battery power is sufficient, the stored electric energy will be converted into AC power through the inverter to supply the load; S5, grid interactive control: Grid power exchange: In grid interaction mode, the system feeds the power of the energy storage battery back to the grid through a bidirectional inverter, or obtains power from the grid to supplement the energy storage; Select the timing of feeding back to the grid: Based on the fluctuation of power prices and power demand of the grid, the system can decide whether to feed power back to the grid; Bidirectional power flow: Bidirectional power flow is achieved between the energy storage system and the grid, ensuring that the system can operate stably when the grid power supply is insufficient, and achieving economic optimization by feeding back power when the grid power price is low; S6. Load forecasting and intelligent dispatching: Predicting electricity demand: Based on historical load data and weather forecasts, the system predicts electricity demand in the future. The system adjusts the energy storage strategy based on the prediction results to ensure that there is enough electricity to supply power during peak demand periods. Adjust charging and discharging strategies: Intelligently schedule the charging and discharging process based on load demand forecasts and battery power; S7. System optimization and adjustment: Dynamically adjust control strategies: optimize charging and discharging strategies based on real-time data, historical data and load demand to maximize system efficiency; Battery health management: Prevent battery failure or premature degradation by monitoring battery temperature, voltage and health status in real time; System adaptive adjustment: The system adaptively adjusts the charging or discharging rate and battery usage strategy according to battery capacity, grid electricity price, and light change factors to achieve the best benefits of energy management.

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