Photovoltaic energy storage method and system

Abstract

The present invention discloses a photovoltaic energy storage method and system, which relates to the field of photovoltaic energy storage technology, including a real-time tracking terminal, an energy storage monitoring terminal, and an intelligent adjustment terminal; the real-time tracking terminal is used to detect the converted electric energy value of photovoltaic solar energy in real time; the energy storage monitoring terminal is used to receive the photovoltaic electric energy data accumulated at the current moment in real time; the intelligent adjustment terminal is used to receive the results of multi-range selective synchronization execution in real time, and predict in real time based on the synchronization execution results whether there is an electric energy usage deviation in the power grid demand in the area corresponding to the electric energy value range, and realize the progressive release and storage of electric energy usage based on the electric energy usage deviation. The photovoltaic energy storage method and system can promptly detect whether the operation of the photovoltaic energy storage system is abnormal, avoid the single functionality of the photovoltaic energy storage system that can only use electricity or only store energy, increase the convenience of using the photovoltaic energy storage system, and reduce the leakage loss during the adjustment process of the photovoltaic energy storage system.

Description

Technical Field

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

[0002] Photovoltaic energy storage is a system that combines solar photovoltaic technology and energy storage technology, aiming to improve the efficiency of solar energy utilization. Photovoltaic energy storage refers to the process of using photovoltaic power generation technology to convert solar energy into electrical energy and store it for subsequent use. When sunlight shines on photovoltaic panels, photons are absorbed by the semiconductor material, causing electrons to jump from the valence band to the conduction band, forming electrons. Under the action of the electric field inside the PN junction, the electrons move to the N-type region and P-type region respectively, forming an electric current. This current is converted into current through the inverter or directly stored in the energy storage device.

[0003] Publication No. CN119154343A discloses a control method for a photovoltaic energy storage system and a photovoltaic energy storage system. The method includes: obtaining the power generation and power consumption of the photovoltaic energy storage system; when the power generation is greater than or equal to the power consumption, controlling the photovoltaic energy storage system to supply power or charge based on the relationship between the grid-connected electricity price and the valley electricity price; when the power generation is less than the power consumption, controlling the photovoltaic energy storage system to discharge, or controlling the photovoltaic energy storage system to charge based on the relationship between the grid-connected electricity price and the valley electricity price according to the SOC value of the energy storage module or the predicted power generation of the photovoltaic energy storage system. The technical solution provided by the embodiment of the present invention is based on the power generation and power consumption of the photovoltaic energy storage system, and effectively improves the utilization rate and flexibility of photovoltaic energy, and improves the rate of return of photovoltaic storage and charging, by combining the SOC value and predicted power generation of the energy storage module through the relationship between the grid-connected electricity price and the valley electricity price.

[0004] After searching the above patents, it was found that there are some shortcomings in photovoltaic energy storage: 1. Although the photovoltaic energy storage system can perform good light energy conversion operations, the photovoltaic energy storage electric energy cannot be judged in real time whether it is abnormal, resulting in the inability to ensure the stability of photovoltaic energy storage electric energy conversion during electric energy conversion, and photovoltaic electric energy conversion deviation is prone to occur; 2. Although the photovoltaic energy storage system in the existing technology can predict the power generation and control the charging of light energy storage, it is impossible to synchronize photovoltaic power consumption and energy storage according to the actual grid demand during photovoltaic energy storage, resulting in limitations in the use of photovoltaic energy storage systems; 3. When the photovoltaic energy storage system has an electric energy deviation, it is impossible to adjust the storage and release of photovoltaic energy in real time, affecting the convenience of using the photovoltaic energy storage system.

[0005] Therefore, a photovoltaic energy storage method and system are proposed to solve the above problems. Summary of the Invention

[0006] The main purpose of the present invention is to provide a photovoltaic energy storage method and system to solve the problems raised in the above background.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a photovoltaic energy storage method and system, including a real-time tracking terminal, an energy storage monitoring terminal and an intelligent regulation terminal;

[0008] The real-time tracking terminal is used to detect the converted electric energy value of photovoltaic solar energy in real time (the converted electric energy value represents the electric energy value obtained after sunlight is irradiated on the photovoltaic solar panel and converted), and to determine in real time whether the photovoltaic electric energy value meets the standard (the photovoltaic electric energy value represents the electric energy demand value in the corresponding range area), promptly detect the specific electric energy value at the current moment (the specific electric energy value represents the electric energy value obtained after sunlight is irradiated on the photovoltaic solar panel and converted), and determine whether the photovoltaic converted electric energy value is abnormal (the photovoltaic converted electric energy value represents the electric energy demand value in the corresponding range area);

[0009] The energy storage monitoring terminal is used to receive the current accumulated photovoltaic power data in real time, and synchronize photovoltaic power consumption and energy storage according to the actual grid demand, and selectively realize the synchronous adjustment of photovoltaic power consumption and energy storage according to multiple ranges during the synchronous execution;

[0010] The intelligent regulation terminal is used to receive the results of selective synchronous execution in multiple ranges in real time, and predict in real time whether there is an electric energy usage deviation in the power grid demand in the range area corresponding to the electric energy value based on the synchronous execution results, and set safety values ​​in combination with different range areas, and realize progressive release and storage of electric energy usage based on the electric energy usage deviation.

[0011] The real-time tracking terminal includes a photovoltaic collection module, a range corresponding module and an abnormality tracking module;

[0012] The photovoltaic collection module includes multiple photovoltaic panel units and multiple power collection units;

[0013] The multi-photovoltaic panel unit is used to set multiple photovoltaic panels for obtaining solar energy and converting the obtained solar energy into electrical energy in real time. The multiple photovoltaic panels are distributed in four directions, and two photovoltaic panels are arranged at right angles.

[0014] The multi-electric energy acquisition unit is used to acquire electric energy data converted by multiple photovoltaic panels in real time through a data acquisition instrument.

[0015] The range corresponding module includes an electric energy receiving unit and an area standard unit;

[0016] The power receiving unit is used to receive historical power grid demand data in real time through a data receiver, the historical power grid demand data including power consumption, power factor and load parameters in corresponding time periods within different range areas;

[0017] The regional standard unit is used to set standard grid demand data according to different range areas. The standard grid demand data includes standard power consumption, standard power factor and standard load parameters for corresponding time periods in different range areas.

[0018] The abnormality tracking module includes a compliance judgment unit, an electric energy detection unit and an electric energy early warning unit;

[0019] The compliance judgment unit is used to calculate the photovoltaic power value E at the current moment in real time. The calculation formula is as follows:

[0020] E = A × η × G × H × T;

[0021] Where A represents the surface area of ​​the available photovoltaic equipment, η represents the conversion efficiency of the photovoltaic cell, G represents the solar radiation intensity, H represents the utilization coefficient of solar radiation at the geographical location, and T represents the operating time;

[0022] Calculate the difference between the photovoltaic power value and the standard grid demand data. If the difference is greater than or equal to 100 volt-amperes, it means that the power meets the standard. If the difference is less than 100 volt-amperes, it means that the power does not meet the standard.

[0023] The power detection unit is used to track the current photovoltaic power value in real time and the standard grid demand data through a data tracker to calculate the difference between the difference. If the difference is greater than 0, it means that the photovoltaic converted power value is normal; if the difference is less than or equal to 0, it means that the photovoltaic converted power value is abnormal.

[0024] The electric energy early warning unit is used to report abnormal photovoltaic conversion electric energy values ​​to the system and issue a voice alarm.

[0025] The energy storage monitoring terminal includes an energy receiving module, a range selection module and an energy storage synchronization module;

[0026] The power receiving module includes a power threshold unit and an over-limit storage unit;

[0027] The electric energy threshold unit is used to set the grid demand storage threshold (the grid demand storage threshold indicates that the grid demand data exceeds the standard grid demand data of the corresponding range area by 100 volt-amperes) and the grid demand warning threshold (the grid demand warning threshold indicates that the grid demand data does not exceed the standard grid demand data of the corresponding range area by 50 volt-amperes) in real time according to the actual demand of different range areas. The grid demand storage threshold is to ensure that the storage value and power consumption value of the grid demand set under normal power consumption in different range areas meet the standard;

[0028] The over-limit storage unit is used to receive the grid demand storage threshold of the corresponding range area in real time. The grid demand storage threshold is a minimum value set to ensure that the electric energy storage demand is met under normal electricity consumption in different range areas. The grid demand storage threshold is calculated as a difference with the standard grid demand data of the corresponding range area. If the grid demand storage threshold exceeds the standard grid demand data of the corresponding range area by 100 volt-amperes, it means that the electric energy demand is met, and the photovoltaic power value that exceeds the standard grid demand data of the corresponding range area by 100 volt-amperes is automatically stored in the photovoltaic energy storage device, and the photovoltaic power value with a difference result greater than 0 and less than 100 volt-amperes is automatically input into the photovoltaic power consumption equipment. If the difference result is less than or equal to 0, the reporting system will issue an insufficient power alarm.

[0029] The range selection module includes an area corresponding unit and an ultra-low warning unit;

[0030] The area corresponding unit is used to automatically match the corresponding power grid demand storage threshold according to the standard power grid demand data of different range areas;

[0031] The ultra-low warning unit is used to receive the grid demand warning threshold of the corresponding range area in real time, and calculate the difference between the grid demand warning threshold and the standard grid demand data of the corresponding range area. The grid demand warning threshold is to ensure the minimum value set to meet the grid power demand under normal power consumption in different range areas. If the difference result is greater than 0 and less than 50 volt-amperes, it means that the grid demand at the current moment is met, and the photovoltaic power value that exceeds the grid demand warning threshold of 50 volt-amperes is automatically input into the photovoltaic energy storage device, and the photovoltaic power value that does not exceed 50 volt-amperes is automatically stored in the photovoltaic power device for power consumption. If the difference result is less than or equal to 0, the reporting system will issue a voice alarm.

[0032] The power consumption and energy storage synchronization includes an execution selection unit, a range matching unit and a real-time tracking unit;

[0033] The execution selection unit is used to select the photovoltaic power consumption and photovoltaic energy storage power in the corresponding range area in real time according to the grid demand storage threshold and grid demand warning threshold of the corresponding range area at the current moment. The selection method is combined with the standard grid demand data of different range areas, specifically:

[0034] Step 1: Calculate the difference between the grid demand storage threshold and the standard grid demand data for the corresponding range area. If the difference result is greater than 0, the photovoltaic power value that exceeds the grid demand storage threshold by 100 volt-amperes will be automatically input into the photovoltaic energy storage device. The photovoltaic power value whose difference result is greater than 0 and less than 100 volt-amperes will be automatically input into the photovoltaic power consumption device. This indicates that the grid demand for the corresponding range area has been met, and the photovoltaic power value that exceeds the demand will be automatically stored (the standard grid demand data for difference calculation here is the standard power consumption, the excess power consumption is stored, and the excess power consumption is input into the photovoltaic power consumption device);

[0035] Step 2: Calculate the difference between the grid demand warning threshold and the standard grid demand data for the corresponding range area. If the difference is greater than 0, the photovoltaic power value that exceeds the grid demand warning threshold by 50 volt-amperes will be automatically input into the photovoltaic energy storage device. If the difference is greater than 0 and less than 50 volt-amperes, the photovoltaic power value will be automatically input into the photovoltaic power consumption device. This indicates that the grid demand for the corresponding range area has been met, and the photovoltaic power value that exceeds the demand will be automatically stored.

[0036] Step 3: Calculate the difference between the photovoltaic power value of the corresponding range area and the standard grid demand data. If the difference is greater than or equal to 100 volt-amperes, the photovoltaic power value is automatically input into the photovoltaic energy storage device. Synchronize photovoltaic power consumption and energy storage according to different range areas. Synchronize by combining the grid demand storage threshold and grid demand storage warning threshold of different range areas. While meeting the photovoltaic power demand of the corresponding range area, the excess photovoltaic power value is stored in real time. The over-limit storage unit sets the photovoltaic power value that exceeds the standard grid demand data by 100 volt-amperes as the energy storage standard value. The ultra-low warning unit sets the photovoltaic power value that does not exceed the standard grid demand data by 50 volt-amperes as the power consumption warning value, indicating that the photovoltaic grid power demand is about to be insufficient.

[0037] The range matching unit is used to automatically transmit power to the range area that issues the grid demand warning when the photovoltaic power value of one range area exceeds the standard grid demand data by 1000 volt-amperes;

[0038] The real-time tracking unit is used to track the synchronous execution results of photovoltaic power consumption and energy storage at the current moment in real time through a data tracker.

[0039] The intelligent adjustment terminal includes a data receiving module, an electric energy prediction module, an error calculation module and an intelligent adjustment module;

[0040] The data receiving module is used to receive the synchronous execution result of photovoltaic power consumption and energy storage at the current moment in real time through a data receiver;

[0041] The power prediction module is used to predict the abnormal power grid demand in the corresponding range area in real time based on the current photovoltaic energy storage power. The prediction method is as follows:

[0042] One week is considered as a cycle. The grid demand anomaly in the corresponding range area is predicted based on the difference results between the photovoltaic power values ​​and the standard grid demand data in three cycles. If the average value of the difference results of the three cycles exceeds the standard grid demand data, the grid demand in the corresponding range area is judged to be normal. If not, the grid demand in the corresponding range area is judged to be abnormal.

[0043] The error calculation module is used to calculate the current moment of the electric energy deviation of multiple photovoltaic panels in real time. The calculation formula is as follows:

[0044] ;

[0045] Among them, U is the effective value of the electric energy of multiple photovoltaic panels, N is the number of sampling points at different times, and UK is the instantaneous sampling value of the electric energy of multiple photovoltaic panels;

[0046] The energy deviation of each base station is obtained by comparative calculation. The calculation formula is:

[0047] ;

[0048] Where D represents the power deviation, S represents the reserve power in the battery, and P represents the minimum power usage threshold;

[0049] Considering one hour as a cycle, calculate the average value of the power deviation over three cycles. If the power deviations of multiple photovoltaic panels converted at the current moment are all less than or equal to the average power deviation, then the power grid demand in the area corresponding to the predicted power value has no power usage deviation. If the power deviations of multiple photovoltaic panels converted at the current moment are all greater than the average power deviation, then the power grid demand in the area corresponding to the predicted power value has a power usage deviation.

[0050] The intelligent adjustment module includes a power adjustment unit, an energy storage adjustment unit and an adjustment prediction unit;

[0051] The power regulation unit is used to adjust the storage of the corresponding value of the photovoltaic panel stored power in a progressive manner according to the calculated power deviation. If the power deviation is ≥ 0, the power regulation unit is used to adjust the storage of the photovoltaic panel stored power in a progressive manner. If the power deviation is < 0, the power regulation unit is used to adjust the storage of the photovoltaic panel stored power in a decreasing manner.

[0052] The energy storage adjustment unit is used to adjust the photovoltaic energy storage capacity in real time according to the power deviation;

[0053] The adjustment prediction unit is used to calculate the grid power consumption time of the photovoltaic energy storage system in the corresponding range area at the current moment in real time based on the photovoltaic energy storage power. The calculation formula is as follows:

[0054] The duration of grid power consumption in the corresponding area = total power consumption / electrical appliance power;

[0055] If the power consumption time of the grid in the corresponding range area exceeds the historical power consumption time by 100 hours, it means that the adjustment of photovoltaic energy storage power is effective, otherwise it is invalid. If the power consumption time of the grid in the corresponding range area is less than the historical power consumption time, the reporting system will issue a voice alarm.

[0056] A photovoltaic energy storage method comprises the following steps:

[0057] Step 1: Configure the IP address information of the PV energy storage remote control regional server;

[0058] Step 2: Enter the real-time tracking terminal, detect the photovoltaic solar energy conversion value in real time, and determine whether the photovoltaic energy value meets the standard in real time based on historical grid data. Promptly determine whether the photovoltaic conversion energy value is abnormal. If abnormal, adjust the conversion energy value in real time based on the current grid data (the energy value adjusted here refers to the conversion energy value to meet the electricity demand in the corresponding range area) to ensure the normal supply of grid data;

[0059] Step 3: Enter the energy storage monitoring terminal, receive the current accumulated photovoltaic power data in real time, and synchronize photovoltaic power consumption and energy storage according to the actual grid demand. Through the execution selection unit and range matching unit, the synchronous execution of photovoltaic power consumption and energy storage is selectively achieved in multiple ranges.

[0060] Step 4: Enter the intelligent adjustment terminal, receive the information data of the synchronous execution in real time, and predict whether the electric energy value is deviated in real time based on the synchronous execution result. If the electric energy deviation occurs, the storage and release of photovoltaic energy storage will be adjusted in real time.

[0061] The present invention has the following beneficial effects:

[0062] 1. In the present invention, by setting a real-time tracking terminal, when the solar energy storage system is in use, the photovoltaic solar energy conversion electric energy value is detected in real time, and the specific electric energy value at the current moment can be detected in time, so that it can more accurately judge whether the photovoltaic conversion electric energy value is abnormal, ensure that the solar energy conversion electric energy can meet the normal supply of power grid data, and can timely discover whether the operation of the photovoltaic energy storage system is abnormal, ensure the stability of photovoltaic energy storage electric energy conversion, and further prevent the situation where the photovoltaic electric energy conversion causes power outages.

[0063] 2. In the present invention, by setting up an energy storage monitoring terminal, when the solar energy storage system is in use, by receiving the photovoltaic power data accumulated at the current moment in real time, and synchronously performing photovoltaic power consumption and energy storage according to the actual grid demand, the photovoltaic energy storage system can simultaneously achieve normal power consumption and normal energy storage, avoiding the single functionality of the photovoltaic energy storage system that can only consume electricity or only store energy. Even when the photovoltaic energy storage system is in operation, it can store excess electricity in real time for backup, reducing the limitations of the photovoltaic energy storage system when in use, and ensuring the stability, safety and reliability of the photovoltaic energy storage system's energy storage.

[0064] 3. In the present invention, by setting up an intelligent adjustment terminal, when the photovoltaic energy storage system is in use, by real-time receiving the results of selective synchronization of multiple ranges, and combining the different set safety values ​​of the range areas, the release and storage of progressive electric energy consumption is realized, ensuring that when there is an electric energy deviation in the photovoltaic energy storage system, and when adjusting the storage and release of photovoltaic energy storage, the power loss is detected in real time, which increases the convenience of using the photovoltaic energy storage system and reduces the leakage loss during the adjustment process of the photovoltaic energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic diagram of the process flow of a photovoltaic energy storage method according to the present invention;

[0066] Figure 2 This is a schematic diagram of the architecture of a real-time tracking terminal of a photovoltaic energy storage system according to the present invention;

[0067] Figure 3 This is a schematic diagram of the architecture of an energy storage monitoring terminal of a photovoltaic energy storage system according to the present invention;

[0068] Figure 4 This is a schematic diagram of the architecture of an intelligent regulation terminal of a photovoltaic energy storage system of the present invention. DETAILED DESCRIPTION

[0069] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0070] Example 1

[0071] Please refer to Figure 1-Figure 2 Shown: A photovoltaic energy storage method and system, including a real-time tracking terminal, an energy storage monitoring terminal, and an intelligent regulation terminal;

[0072] The real-time tracking terminal is used to detect the converted power value of photovoltaic solar energy in real time and determine whether the photovoltaic power value meets the standard in real time (this is a process of combining historical grid demand data to obtain real-time standard grid demand data, and then calculating the difference between the current photovoltaic power value and the real-time standard grid demand data to determine whether the photovoltaic power value meets the standard. If the difference between the current photovoltaic power value and the real-time standard grid demand data is greater than or equal to 100 volt-amperes, the photovoltaic power value is determined to meet the standard; if the difference between the current photovoltaic power value and the real-time standard grid demand data is less than 100 volt-amperes, the photovoltaic power value is determined to be substandard). It promptly detects the specific current power value and determines whether the photovoltaic converted power value is abnormal.

[0073] The energy storage monitoring terminal is used to receive the current accumulated photovoltaic power data in real time, and synchronize photovoltaic power consumption and energy storage according to the actual grid demand. During synchronization, it can selectively adjust photovoltaic power consumption and energy storage according to multiple ranges.

[0074] The intelligent regulation terminal is used to receive the results of selective synchronization execution in multiple ranges in real time, and predict in real time whether there is any deviation in the power consumption of the power grid demand in the range area corresponding to the power value based on the synchronization execution results, and set safety values ​​in combination with different range areas, and realize the progressive release and storage of power consumption according to the deviation in power consumption.

[0075] The real-time tracking terminal includes a photovoltaic collection module, a range correspondence module, and an anomaly tracking module;

[0076] The photovoltaic collection module includes multiple photovoltaic panel units and multiple power collection units;

[0077] The multi-photovoltaic panel unit is used to set up multiple photovoltaic panels to capture solar energy and convert the captured solar energy into electrical energy in real time. The multiple photovoltaic panels are distributed in four directions, and two photovoltaic panels are arranged at right angles.

[0078] The multi-electric energy acquisition unit is used to collect the electric energy data converted by multiple photovoltaic panels in real time through a data acquisition instrument.

[0079] The range corresponding module includes the power receiving unit and the regional standard unit;

[0080] The power receiving unit is used to receive historical power grid demand data in real time through a data receiver;

[0081] The regional standard unit is used to set standard grid demand data according to different ranges of regions, ensuring that the electricity converted from solar energy can meet the normal supply of grid data, and can promptly detect whether the operation of the photovoltaic energy storage system is abnormal, ensuring the stability of photovoltaic energy storage power conversion, and further preventing power outages caused by power deviations in photovoltaic power conversion.

[0082] The abnormality tracking module includes a compliance judgment unit, a power detection unit, and a power early warning unit;

[0083] The compliance judgment unit is used to calculate the photovoltaic power value E at the current moment in real time. The calculation formula is as follows

[0084] E = A × η × G × H × T;

[0085] Where A represents the surface area of ​​the available photovoltaic equipment, η represents the conversion efficiency of the photovoltaic cell, G represents the solar radiation intensity, H represents the utilization coefficient of solar radiation at the geographical location, and T represents the operating time;

[0086] Calculate the difference between the photovoltaic power value and the standard grid demand data. If the difference is greater than or equal to 100 volt-amperes, it means that the power meets the standard. If the difference is less than 100 volt-amperes, it means that the power does not meet the standard.

[0087] The power detection unit is used to track the current photovoltaic power value in real time through the data tracker and calculate the difference between the difference and the standard grid demand data. If the difference is greater than 0, it means that the photovoltaic conversion power value is normal. If the difference is less than or equal to 0, it means that the photovoltaic conversion power value is abnormal.

[0088] The electric energy early warning unit is used to report abnormalities in the photovoltaic conversion electric energy value, and to send a voice alarm to the reporting system to ensure that the electric energy converted by solar energy can meet the normal supply of power grid data. It can also promptly detect whether the operation of the photovoltaic energy storage system is abnormal, ensure the stability of photovoltaic energy storage electric energy conversion, and further prevent the situation where the photovoltaic power conversion causes power outages in the grid due to power deviations.

[0089] Example 2

[0090] Please refer to Figure 3 As shown: Based on the first embodiment, the energy storage monitoring terminal includes an energy receiving module, a range selection module and an energy storage synchronization module;

[0091] The power receiving module includes a power threshold unit and an over-limit storage unit;

[0092] The electric energy threshold unit is used to set the grid demand storage threshold and grid demand warning threshold in real time according to the actual demand of different range areas. The grid demand storage threshold here is used to set the standard value of photovoltaic energy storage equipment, that is, the grid demand storage threshold is greater than the value of the standard grid demand data of the corresponding range area + 100 volt-amperes. When in use, if the standard grid demand data of the corresponding range area is 100 volt-amperes, the grid demand storage threshold is 100 volt-amperes + 100 volt-amperes = 200 volt-amperes. If the photovoltaic power value is 500 volt-amperes, the difference between the photovoltaic power value and the grid demand storage threshold (500 volt-amperes - 200 volt-amperes = 300 volt-amperes) is automatically stored in the photovoltaic energy storage device. The grid demand warning threshold here is used to set the warning value of photovoltaic power equipment. When in use, that is, the grid demand Find the value where the warning threshold is less than or equal to the standard grid demand data for the corresponding range area + 50 VA. If the standard grid demand data for the corresponding range area is 100 VA, the grid demand warning threshold is 100 VA + 50 VA = 150 VA. If the photovoltaic power value is 120 VA, calculate the difference between the photovoltaic power value and the grid demand warning threshold (120 VA - 150 VA = -30 VA). If -30 VA is less than 50 VA, it means that the current photovoltaic power value does not exceed the standard grid demand data for the corresponding range area by 50 VA. Then calculate the difference between the photovoltaic power value and the standard grid demand data for the corresponding range area (120 VA - 100 VA = 20 VA), and automatically store the 20 VA difference in the photovoltaic power device for power supply needs.

[0093] The over-limit storage unit is used to receive the grid demand storage threshold of the corresponding range area in real time, and calculate the difference between the grid demand storage threshold and the standard grid demand data of the corresponding range area. If the difference result is less than or equal to 0, the reporting system will issue a voice alarm.

[0094] The range selection module includes the area corresponding unit and the ultra-low warning unit;

[0095] The regional corresponding unit is used to automatically match the corresponding grid demand storage threshold according to the standard grid demand data of different range areas;

[0096] The ultra-low warning unit is used to receive the grid demand warning threshold of the corresponding range area in real time, and calculate the difference between the grid demand warning threshold and the standard grid demand data of the corresponding range area. If the difference result is less than or equal to 0, the reporting system will issue a voice alarm, and photovoltaic power consumption and energy storage will be carried out simultaneously according to the actual grid demand, avoiding the single functionality of the photovoltaic energy storage system that can only consume electricity or only store energy. Even when the photovoltaic energy storage system is in operation, it can store excess electricity in real time for backup, reducing the limitations of the photovoltaic energy storage system when in use, and ensuring the stability, safety and reliability of the photovoltaic energy storage system's energy storage.

[0097] The synchronization of electricity consumption and energy storage includes an execution selection unit, a range matching unit, and a real-time tracking unit;

[0098] The execution selection unit is used to select the photovoltaic power consumption and photovoltaic energy storage power in the corresponding range area in real time according to the grid demand storage threshold and grid demand warning threshold of the corresponding range area at the current moment. The selection method is combined with the standard grid demand data of different range areas, specifically:

[0099] Step 1: Calculate the difference between the grid demand storage threshold and the standard grid demand data for the corresponding range area. If the difference is greater than 0, the photovoltaic power value that exceeds the grid demand storage threshold by 100 volt-amperes will be automatically input into the photovoltaic energy storage device, and the photovoltaic power value that is greater than 0 and less than 100 volt-amperes will be automatically input into the photovoltaic power consumption device;

[0100] Step 2: Calculate the difference between the grid demand warning threshold and the standard grid demand data for the corresponding range area. If the difference is greater than 0, the photovoltaic power value that exceeds the grid demand warning threshold by 50 volt-amperes will be automatically input into the photovoltaic energy storage device, and the photovoltaic power value that exceeds the grid demand warning threshold by 50 volt-amperes will be automatically input into the photovoltaic power consumption device;

[0101] Step 3: Calculate the difference between the photovoltaic power value of the corresponding range area and the standard grid demand data. If the difference is greater than or equal to 100 volt-amperes, the photovoltaic power value is automatically input into the photovoltaic energy storage device, and photovoltaic power consumption and energy storage are synchronized according to different range areas;

[0102] The range matching unit is used to automatically transmit power to the range area that issues the grid demand warning when the photovoltaic power value in one range area exceeds the standard grid demand data by 1000 volt-amperes;

[0103] The real-time tracking unit is used to track the synchronous execution results of photovoltaic power consumption and energy storage at the current moment in real time through a data tracker, and synchronize photovoltaic power consumption and energy storage according to the actual grid demand, avoiding the single functionality of the photovoltaic energy storage system that can only consume electricity or only store energy. Even when the photovoltaic energy storage system is in operation, it can store excess electricity in real time for backup, reducing the limitations of the photovoltaic energy storage system during use and ensuring the stability, safety and reliability of the photovoltaic energy storage system's energy storage.

[0104] Example 3

[0105] Please refer to Figure 4 As shown: Based on the first embodiment, the intelligent adjustment end includes a data receiving module, an electric energy prediction module, an error calculation module and an intelligent adjustment module;

[0106] The data receiving module is used to receive the synchronous execution results of photovoltaic power consumption and energy storage at the current moment in real time through the data receiver;

[0107] The power prediction module is used to predict the abnormal grid demand in the corresponding area in real time based on the current photovoltaic energy storage power. The prediction method is as follows:

[0108] One week is taken as a cycle, and the grid demand abnormality of the corresponding range area is predicted based on the difference results of the photovoltaic power values ​​and the standard grid demand data of three cycles. If the average value of the difference results of the three cycles exceeds the standard grid demand data, the grid demand of the corresponding range area is judged to be normal. If not, the grid demand of the corresponding range area is judged to be abnormal. By real-time receiving the results of selective synchronization of multiple ranges, and based on the synchronization execution results, it is predicted in real time whether there is any deviation in the electricity usage of the grid demand of the corresponding range area of ​​the electricity value, and combined with the different set safety values ​​of the range area, if there is a deviation in electricity usage, the storage and release of photovoltaic energy storage are adjusted in real time.

[0109] The error calculation module is used to calculate the current moment of the electric energy deviation of multiple photovoltaic panels in real time. The calculation formula is as follows:

[0110] ;

[0111] Among them, U is the effective value of the electric energy of multiple photovoltaic panels, N is the number of sampling points at different times, and UK is the instantaneous sampling value of the electric energy of multiple photovoltaic panels;

[0112] The energy deviation of each base station is obtained by comparative calculation. The calculation formula is:

[0113] ;

[0114] Where D represents the power deviation, S represents the reserve power in the battery, and P represents the minimum power usage threshold;

[0115] Considering one hour as a cycle, calculate the average value of the power deviation over three cycles. If the power deviations of multiple photovoltaic panels converted at the current moment are all less than or equal to the average power deviation, then the power grid demand in the area corresponding to the predicted power value has no power usage deviation. If the power deviations of multiple photovoltaic panels converted at the current moment are all greater than the average power deviation, then the power grid demand in the area corresponding to the predicted power value has a power usage deviation.

[0116] The intelligent regulation module includes a power regulation unit, an energy storage regulation unit and a regulation prediction unit;

[0117] The power regulation unit is used to adjust the storage of the photovoltaic panel based on the calculated power deviation. If the power deviation is greater than 0, the photovoltaic panel will be stored in a progressively increasing manner. The progressively increasing storage adjustment is to increase the photovoltaic panel's stored power in a progressive manner. For example, if the storage capacity to be increased is 90, the storage capacity will be increased by 20 for the first time, 30 for the second time, and 40 for the third time.

[0118] If the energy deviation is less than 0, the photovoltaic panel stored energy will be released in a decreasing manner. The progressive release adjustment is to release the photovoltaic panel stored energy in a decreasing manner. For example, if the energy storage capacity to be decreased is 90, the power consumption will be decreased by 20 for the first time, 30 for the second time, and 40 for the third time.

[0119] The energy storage regulation unit is used to adjust the photovoltaic energy storage capacity in real time according to the power deviation;

[0120] The adjustment prediction unit is used to calculate the grid power consumption time of the photovoltaic energy storage system in the corresponding area at the current moment in real time based on the photovoltaic energy storage power. The calculation formula is as follows:

[0121] The duration of grid power consumption in the corresponding area = total power consumption / electrical appliance power;

[0122] If the power consumption time of the power grid in the corresponding range area exceeds the historical power consumption time of the power grid by 100 hours, it means that the adjustment of the photovoltaic energy storage power is effective, otherwise it is invalid. If the power consumption time of the power grid in the corresponding range area is less than the historical power consumption time of the power grid, the reporting system will issue a voice alarm to realize the release and storage of progressive power consumption, ensuring that when the photovoltaic energy storage system has power deviation, the storage and release of photovoltaic energy storage can be adjusted in real time, and the power loss can be detected in real time when adjusting the storage and release of photovoltaic energy storage, thereby increasing the convenience of using the photovoltaic energy storage system and reducing the leakage loss during the adjustment process of the photovoltaic energy storage system.

[0123] In the present invention, a photovoltaic energy storage method and system are provided. When the system is in operation, the IP address information of the photovoltaic energy storage remote control area server is first configured; the real-time tracking terminal is entered, and the converted electric energy value of photovoltaic solar energy is detected in real time, and the photovoltaic electric energy value is judged in real time based on the historical power grid data to see whether it meets the standard, and whether the photovoltaic converted electric energy value is abnormal. If it is abnormal, the converted electric energy value is adjusted in real time based on the power grid data at the current moment to ensure the normal supply of power grid data. By detecting the converted electric energy value of photovoltaic solar energy in real time, and judging in real time based on the historical power grid data to see whether the photovoltaic electric energy value meets the standard, the photovoltaic energy storage system can detect the specific electric energy value at the current moment in time when performing light energy conversion, so as to be more accurate. It can judge whether the photovoltaic conversion electric energy value is abnormal. If it is abnormal, the electric energy value is adjusted in real time according to the current grid data to ensure that the electric energy converted by solar energy can meet the normal supply of grid data, and can promptly discover whether the operation of the photovoltaic energy storage system is abnormal, to ensure the stability of photovoltaic energy storage electric energy conversion, and further prevent the situation where the photovoltaic power conversion causes power outages in the grid; enter the energy storage monitoring terminal, by receiving the photovoltaic electric energy data accumulated at the current moment in real time, and synchronously perform photovoltaic power consumption and energy storage according to the actual grid demand, through the execution selection unit and the range matching unit, multi-range selectively realize the synchronous execution of photovoltaic power consumption and storage, by receiving the photovoltaic electric energy data accumulated at the current moment in real time, and according to the actual grid demand, The photovoltaic power consumption and energy storage are synchronized according to the grid demand, so that when the photovoltaic energy storage system is running, it can selectively realize the synchronous execution of photovoltaic power consumption and energy storage in multiple ranges through the execution selection unit and the range matching unit, so that the photovoltaic energy storage system can realize normal power consumption and normal energy storage synchronously, and can synchronize photovoltaic power consumption and energy storage according to the actual grid demand, avoiding the single functionality of the photovoltaic energy storage system that can only consume electricity or only store energy, so that even when the photovoltaic energy storage system is running, it can store excess electricity in real time for standby, reduce the limitations of the photovoltaic energy storage system when in use, and ensure the stability, safety and reliability of the photovoltaic energy storage system energy storage; enter the intelligent adjustment terminal, receive the information data of the synchronous execution in real time, and make real-time predictions based on the synchronous execution results. Measure whether the electric energy value is deviated. If an electric energy deviation occurs, adjust the storage and release of photovoltaic energy storage in real time. By real-time receiving the results of selective synchronization of multiple ranges, and based on the synchronization results, predict in real time whether there is an electric energy usage deviation in the grid demand of the range area corresponding to the electric energy value, and combine the different set safety values ​​of the range area, if an electric energy usage deviation occurs, adjust the storage and release of photovoltaic energy storage in real time to achieve progressive electric energy release and storage, and ensure that when an electric energy deviation occurs in the photovoltaic energy storage system, the storage and release of photovoltaic energy storage can be adjusted in real time, and the power loss is detected in real time when adjusting the storage and release of photovoltaic energy storage, thereby increasing the convenience of using the photovoltaic energy storage system and reducing the leakage loss during the adjustment process of the photovoltaic energy storage system.

[0124] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic energy storage system, characterized in that: The system includes a real-time tracking terminal, an energy storage monitoring terminal and an intelligent regulation terminal; The real-time tracking terminal is used to detect the converted power value of photovoltaic solar energy in real time, and to determine whether the photovoltaic power value meets the standard in real time, to promptly detect the specific value of electric energy at the current moment, and to determine whether the photovoltaic converted power value is abnormal; The energy storage monitoring terminal is used to receive the current accumulated photovoltaic power data in real time, and synchronize photovoltaic power consumption and energy storage according to the actual grid demand, and selectively realize the synchronous adjustment of photovoltaic power consumption and energy storage according to multiple ranges during the synchronous execution; The intelligent regulating terminal is used to receive the results of selective synchronization execution of multiple ranges in real time, and predict in real time whether there is an energy usage deviation of the power grid demand in the range area corresponding to the energy value according to the synchronization execution results, and set safety values ​​in combination with different range areas, and realize progressive release and storage of energy usage according to the energy usage deviation; The intelligent adjustment terminal includes a data receiving module, an electric energy prediction module, an error calculation module and an intelligent adjustment module; The data receiving module is used to receive the synchronous execution result of photovoltaic power consumption and energy storage at the current moment in real time through a data receiver; The power prediction module is used to predict the abnormal power grid demand in the corresponding range area in real time based on the current photovoltaic energy storage power. The prediction method is as follows: One week is considered a cycle. The grid demand anomaly in the corresponding range is predicted based on the difference between the photovoltaic power values ​​and the standard grid demand data over three cycles. If the average value of the difference between the three cycles exceeds the standard grid demand data, the grid demand in the corresponding range is considered normal. Otherwise, the grid demand in the corresponding range is considered abnormal. The error calculation module is used to calculate the current moment of the electric energy deviation of multiple photovoltaic panels in real time. The calculation formula is as follows: ； Among them, U is the effective value of the electric energy of multiple photovoltaic panels, N is the number of sampling points at different times, and UK is the instantaneous sampling value of the electric energy of multiple photovoltaic panels; The energy deviation of each base station is obtained by comparative calculation. The calculation formula is: ； Where D represents the power deviation, S represents the reserve power in the battery, and P represents the minimum power usage threshold; Considering one hour as a cycle, calculate the average value of the power deviation over three cycles. If the power deviations of multiple photovoltaic panels converted at the current moment are all less than or equal to the average power deviation, then the power grid demand in the area corresponding to the predicted power value has no power usage deviation. If the power deviations of multiple photovoltaic panels converted at the current moment are all greater than the average power deviation, then the power grid demand in the area corresponding to the predicted power value has a power usage deviation. The intelligent adjustment module includes a power adjustment unit, an energy storage adjustment unit and an adjustment prediction unit; The power regulation unit is used to adjust the storage of the corresponding value of the photovoltaic panel stored power in a progressive manner according to the calculated power deviation. If the power deviation is ≥ 0, the power regulation unit is used to adjust the storage of the photovoltaic panel stored power in a progressive manner. If the power deviation is < 0, the power regulation unit is used to adjust the storage of the photovoltaic panel stored power in a decreasing manner. The energy storage adjustment unit is used to adjust the photovoltaic energy storage capacity in real time according to the power deviation; The adjustment prediction unit is used to calculate the grid power consumption time of the photovoltaic energy storage system in the corresponding range area at the current moment in real time based on the photovoltaic energy storage power. The calculation formula is as follows: The duration of grid power consumption in the corresponding area = total power consumption / electrical appliance power; If the grid power consumption time in the corresponding range exceeds the historical grid power consumption time by 100 hours, it means that the adjustment of photovoltaic energy storage power is effective, otherwise it is invalid. If the grid power consumption time in the corresponding range is less than the historical grid power consumption time, the reporting system will issue a voice alarm; The energy storage monitoring terminal includes an energy receiving module, a range selection module and an energy storage synchronization module; The power receiving module includes a power threshold unit and an over-limit storage unit; The electric energy threshold unit is used to set the power grid demand storage threshold and the power grid demand warning threshold in real time according to the actual demand of different range areas; The over-limit storage unit is used to receive the power grid demand storage threshold of the corresponding range area in real time; The range selection module includes an area corresponding unit and an ultra-low warning unit; The area corresponding unit is used to automatically match the corresponding power grid demand storage threshold according to the standard power grid demand data of different range areas; The ultra-low warning unit is used to receive the power grid demand warning threshold of the corresponding range area in real time; The power consumption and energy storage synchronization includes an execution selection unit, a range matching unit and a real-time tracking unit; The execution selection unit is used to select the photovoltaic power consumption and photovoltaic energy storage power in the corresponding range area in real time according to the grid demand storage threshold and grid demand warning threshold of the corresponding range area at the current moment. The selection method is combined with the standard grid demand data of different range areas, specifically: Step 1: Calculate the difference between the grid demand storage threshold and the standard grid demand data for the corresponding range area. If the difference is greater than 0, the photovoltaic power value that exceeds the grid demand storage threshold by 100 volt-amperes will be automatically input into the photovoltaic energy storage device, and the photovoltaic power value that is greater than 0 and less than 100 volt-amperes will be automatically input into the photovoltaic power consumption device; Step 2: Calculate the difference between the grid demand warning threshold and the standard grid demand data for the corresponding range area. If the difference is greater than 0, the photovoltaic power value that exceeds the grid demand warning threshold by 50 volt-amperes will be automatically input into the photovoltaic energy storage device, and the photovoltaic power value that exceeds the grid demand warning threshold by 50 volt-amperes will be automatically input into the photovoltaic power consumption device; Step 3: Calculate the difference between the photovoltaic power value of the corresponding range area and the standard grid demand data. If the difference is greater than or equal to 100 volt-amperes, the photovoltaic power value is automatically input into the photovoltaic energy storage device, and photovoltaic power consumption and energy storage are synchronized according to different range areas; The range matching unit is used to automatically transmit power to the range area that issues the grid demand warning when the photovoltaic power value of one range area exceeds the standard grid demand data by 1000 volt-amperes; The real-time tracking unit is used to track the synchronous execution results of photovoltaic power consumption and energy storage at the current moment in real time through a data tracker.

2. The system according to claim 1, wherein: The real-time tracking terminal includes a photovoltaic collection module, a range corresponding module and an abnormality tracking module; The photovoltaic collection module includes multiple photovoltaic panel units and multiple power collection units; The multi-photovoltaic panel unit is used to set multiple photovoltaic panels for obtaining solar energy and converting the obtained solar energy into electrical energy in real time. The multiple photovoltaic panels are distributed in four directions, and two photovoltaic panels are arranged at right angles. The multi-electric energy acquisition unit is used to acquire electric energy data converted by multiple photovoltaic panels in real time through a data acquisition instrument.

3. The system according to claim 2, characterized in that: The range corresponding module includes an electric energy receiving unit and an area standard unit; The electric energy receiving unit is used to receive historical power grid demand data in real time through a data receiver; The regional standard unit is used to set standard grid demand data according to different range areas.

4. The system according to claim 3, wherein: The abnormality tracking module includes a compliance judgment unit, an electric energy detection unit and an electric energy early warning unit; The compliance judgment unit is used to calculate the photovoltaic power value E at the current moment in real time. The calculation formula is as follows: E = A × η × G × H × T; Where A represents the surface area of ​​the available photovoltaic equipment, η represents the conversion efficiency of the photovoltaic cell, G represents the solar radiation intensity, H represents the utilization coefficient of solar radiation at the geographical location, and T represents the operating time; Calculate the difference between the photovoltaic power value and the standard grid demand data. If the difference is greater than or equal to 100 volt-amperes, it means that the power meets the standard. If the difference is less than 100 volt-amperes, it means that the power does not meet the standard. The power detection unit is used to track the current photovoltaic power value in real time and the standard grid demand data through a data tracker to calculate the difference between the difference. If the difference is greater than 0, it means that the photovoltaic converted power value is normal; if the difference is less than or equal to 0, it means that the photovoltaic converted power value is abnormal. The electric energy early warning unit is used to report abnormal photovoltaic conversion electric energy values ​​to the system and issue a voice alarm.

5. A photovoltaic energy storage method using the photovoltaic energy storage system according to claim 1, characterized in that: The following steps are involved: Step 1: Configure the IP address information of the PV energy storage remote control regional server; Step 2: Enter the real-time tracking terminal, detect the photovoltaic solar energy conversion value in real time, and judge whether the photovoltaic energy value meets the standard in real time based on historical grid data. It also promptly determines whether the photovoltaic conversion energy value is abnormal. If abnormal, the conversion energy value is adjusted in real time based on the current grid data to ensure normal grid data supply; Step 3: Enter the energy storage monitoring terminal, receive the current accumulated photovoltaic power data in real time, and synchronize photovoltaic power consumption and energy storage according to the actual grid demand; through the execution selection unit and range matching unit, selectively realize the synchronization of photovoltaic power consumption and energy storage in multiple ranges; Step 4: Enter the intelligent adjustment terminal, receive the information data of the synchronous execution in real time, and predict whether the electric energy value is deviated in real time based on the synchronous execution result. If the electric energy deviation occurs, the storage and release of photovoltaic energy storage will be adjusted in real time.

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