Method and system for predicting available duration of off-network energy station

Abstract

The invention provides an available duration prediction method and system for an off-grid energy station, and the method comprises the steps: obtaining an energy storage mode of the off-grid energy station, and collecting the corresponding reserve electric quantity according to the energy storage mode; the reserve electric quantity is battery remaining electric quantity and / or hydrogen storage discharge quantity; when the reserve electric quantity is lower than a preset reference electric quantity, correcting the reserve electric quantity to obtain an electric quantity correction value; and acquiring power consumption data of a power load, determining average power consumption of the power load according to the power consumption data, and determining first available duration of the off-grid energy station according to the electric quantity correction value and the average power consumption. According to the invention, the available duration corresponding to all electric power in the whole off-grid energy station can be accurately obtained, so that energy management and control can be carried out in advance according to the available duration.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a method and system for predicting the available time of an off-grid energy station. Background Art

[0002] For areas that are out of reach of the public power grid or have insufficient power supply, such as farms, ranches, islands, mountainous areas and other application scenarios, each region can establish a corresponding photovoltaic / wind power system to generate electricity for the power load in the region. At the same time, the region will also store the excess electricity generated in a large number of batteries for use when the production capacity is insufficient. The current existing energy storage method usually stores electricity through batteries, but each battery has its corresponding maximum battery capacity. The amount of electricity that can be stored by storing electricity only in batteries is limited, and the battery management system configured for each battery can only display the remaining power of its own battery. Users cannot intuitively know how long the battery power can support the use of user equipment; it is even impossible to clearly determine whether the available power in the entire region is sufficient for the power load, making it difficult to predict and balance the supply and demand of electricity. Even during peak power consumption, it may cause insufficient power supply, affecting regional power consumption planning, economic development, residents' lives, industrial production, etc. Summary of the invention

[0003] The embodiment of the present invention provides a method and system for predicting the available time of an off-grid energy station to solve the problems existing in the related technologies. The technical solution is as follows:

[0004] In a first aspect, an embodiment of the present invention provides a method for predicting the available duration of an off-grid energy station, comprising:

[0005] Obtain the energy storage mode of the off-grid energy station, and collect the corresponding reserve power according to the energy storage mode; the reserve power is the remaining power of the battery and / or the hydrogen storage discharge capacity;

[0006] When the reserve power is lower than the preset reference power, the reserve power is corrected to obtain a power correction value;

[0007] The power consumption data of the power load is obtained, the average power consumption of the power load is determined according to the power consumption data, and the first available time of the off-grid energy station is determined according to the power correction value and the average power consumption.

[0008] In one embodiment, the energy storage mode includes:

[0009] Through a first mode of battery energy storage, the reserve power in the first mode is the remaining power of the battery;

[0010] A second mode of converting electric power into hydrogen storage, wherein the reserve power in the second mode is the hydrogen storage discharge power;

[0011] The third mode combines battery energy storage and hydrogen energy storage. The reserve power in the third mode is the sum of the remaining battery power and the hydrogen storage discharge capacity.

[0012] In one embodiment, it further includes:

[0013] When the reserve power is higher than or equal to the reference power, the reserve power is directly output as the power correction value.

[0014] In one embodiment, when the reserve power is lower than a preset reference power, correcting the reserve power includes:

[0015] Calculate the difference between the reference power and the reserve power to obtain the power difference; the reference power is a value less than or equal to the maximum storage power of the off-grid energy station;

[0016] Obtain the correction coefficient, calculate the product of the power difference and the correction coefficient, and obtain the correction base;

[0017] Subtract the correction base from the reserve power to obtain the power correction value.

[0018] In one embodiment, determining the average power consumption of the power load according to the power consumption data includes:

[0019] When the power consumption data is the power consumption of the power load per hour within a specified number of days, the daily power consumption is calculated based on the power consumption data to obtain the daily power consumption;

[0020] Calculate the sum of daily power consumption within a specified number of days to obtain the total power consumption;

[0021] The average power consumption is calculated based on the total power consumption and the specified number of days.

[0022] In one embodiment, it further includes:

[0023] Obtaining the current duration display value, and determining the update period according to the deviation between the current duration display value and the first available duration;

[0024] The current duration display value is updated according to the update cycle to obtain a second available duration;

[0025] The second available time is sent to the designated terminal for display.

[0026] In one implementation, determining the update period according to the deviation between the current duration display value and the first available duration includes:

[0027] Calculate the absolute difference between the first available duration and the current duration display value to obtain the duration difference;

[0028] Calculate the ratio percentage of the duration difference and the current duration display value to obtain the difference rate;

[0029] When the difference rate is less than or equal to the preset difference, the update period is calculated according to the difference rate;

[0030] When the difference rate is greater than the preset difference, a fixed update cycle is output.

[0031] In a second aspect, an embodiment of the present invention provides a system for predicting the available duration of an off-grid energy station, which executes a method for predicting the available duration of an off-grid energy station as described above.

[0032] In a third aspect, an embodiment of the present invention provides an electronic device, the device comprising: a memory and a processor. The memory and the processor communicate with each other through an internal connection path, the memory is used to store instructions, the processor is used to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the processor executes the method in any one of the above-mentioned embodiments.

[0033] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program runs on a computer, the method in any one of the above-mentioned embodiments is executed.

[0034] The advantages or beneficial effects of the above technical solution include at least:

[0035] The off-grid energy station of the present invention provides a variety of energy storage modes, and the storage capacity can be increased to a certain extent through the multiple energy storage modes; the reserve power under the current energy storage mode is obtained, and the reserve power is the remaining battery power and / or the hydrogen storage discharge capacity; the reserve power is corrected to obtain a power correction value, and the first available time of the entire off-grid energy station is calculated according to the power correction value and the average power consumption of the power load, so that the available time corresponding to all the electricity in the entire off-grid energy station can be accurately known, so as to facilitate energy management and control in advance according to the available time.

[0036] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present invention and should not be regarded as limiting the scope of the present invention.

[0038] Figure 1It is a schematic diagram of the composition of the off-grid energy station of the present invention;

[0039] Figure 2 It is a flow chart of the method for predicting the available time of an off-grid energy station of the present invention;

[0040] Figure 3 The correction coefficient RF and the reference electric quantity E of the present invention are res Schematic diagram of the relationship between

[0041] Figure 4 The structure block diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0043] Photovoltaic / wind power, electrochemical energy storage, and hydrogen energy storage are important directions for the development of new energy and will play an increasingly important role in the future energy system. For areas where the public power grid cannot reach or the power supply is insufficient, such as farms, ranches, islands, mountainous areas and other application scenarios, photovoltaic / wind power, electrochemical energy storage, and hydrogen energy storage can be coupled to form an off-grid energy system, which is a feasible solution to the reliable supply of energy in similar isolated island application scenarios. However, since it is an off-grid application scenario, the off-grid energy system that provides energy services is the only source of electricity for users. In order to alleviate users' anxiety about electricity safety and ensure electricity safety, real-time prediction of how long the off-grid energy system can be used is an urgent problem to be solved.

[0044] In order to solve the above problems, an embodiment of the present invention provides a method for predicting the available time of an off-grid energy station. The method can accurately know the available time of energy in the off-grid energy station, so as to facilitate energy management and control in advance.

[0045] like Figure 1 , Figure 2 As shown, the available time prediction method of the off-grid energy station in this embodiment includes:

[0046] Step S1: Obtain the energy storage mode of the off-grid energy station, and collect the corresponding reserve power according to the energy storage mode; the reserve power is the remaining battery power and / or the hydrogen storage discharge capacity.

[0047] It should be noted that an off-grid energy station refers to an energy supply system that operates independently without relying on the central power grid. An off-grid energy station can provide electricity in areas without a grid connection, mainly by storing energy through energy storage devices and releasing energy for use when needed.

[0048] like Figure 1 As shown, the off-grid energy station in this embodiment is composed of a photovoltaic / wind system, an energy storage system and an electrical load. The photovoltaic / wind system is responsible for providing electricity by utilizing photovoltaic / wind power generation, and the photovoltaic / wind system includes photovoltaic / wind equipment, inverters, etc.

[0049] It should be explained that the principle of generating electricity through photovoltaic / wind power equipment has been disclosed in the prior art and will not be described in detail here.

[0050] In addition to being consumed by the power load, the remaining electricity generated by the photovoltaic / wind system is stored by the energy storage system. There are three energy storage modes: the first mode is storage only through energy storage batteries, the second mode is to produce hydrogen only by the electrolyzer and store it through the hydrogen storage module, and the third mode is to store electricity through a combination of energy storage batteries and hydrogen storage modules.

[0051] In the first mode, the corresponding energy storage system is composed only of energy storage battery modules. At this time, the energy station is an electrochemical energy storage device that directly stores the electricity generated by photovoltaic / power equipment in the energy storage battery.

[0052] The corresponding energy storage system in the second mode consists of three sub-modules: electrolyzer, hydrogen storage module, and power generation module, which directly converts the electricity generated by photovoltaic / wind power equipment into hydrogen storage.

[0053] The corresponding energy storage system in the third mode includes four sub-modules: energy storage battery, electrolyzer, hydrogen storage module, and power generation module; among them, the energy storage battery belongs to electrochemical energy storage, and together with the electrolyzer, hydrogen storage module, and fuel cell power generation module, it constitutes hydrogen energy storage.

[0054] Among them, the proportion of the storage power of the energy storage battery in the third mode to the total power that needs to be stored in the entire off-grid energy station, as well as the proportion of the amount of power stored by the hydrogen storage module after the power is converted into hydrogen to the total power that needs to be stored in the entire off-grid energy station, can be allocated according to the actual hardware configuration and are not specifically limited here.

[0055] It should be noted that the energy storage battery is responsible for storing the remaining electricity of the photovoltaic / wind system after deducting the consumption of the power load, and releasing the electricity for use by the power load when discharge is needed.

[0056] The electrolyzer is responsible for converting excess electricity into hydrogen through water electrolysis technology when electricity needs to be converted into hydrogen storage.

[0057] The hydrogen storage module is responsible for storing the hydrogen produced by the electrolyzer through the hydrogen storage module and releasing the hydrogen when it is needed.

[0058] The power generation module is responsible for using hydrogen fuel cells to convert hydrogen into electrical output for use by electrical loads.

[0059] It should be noted that the hardware modules configured for the three energy storage modes can be installed simultaneously in the same area according to actual conditions, so that the area can select the corresponding energy storage mode according to actual needs and start the hardware module corresponding to the selected energy storage mode to achieve the energy storage purpose under the corresponding energy storage mode.

[0060] Before the photovoltaic / wind system starts to generate electricity, the manager can select the energy storage mode of the off-grid energy station, or identify the startup status of each hardware module of the current off-grid energy station when the photovoltaic / wind system starts to generate electricity, thereby determining the energy storage mode currently used by the off-grid energy station.

[0061] The reserve power under the selected energy storage mode is collected. The types of energy storage power vary according to the energy storage mode. The reserve power under the first mode is the remaining battery power; the reserve power under the second mode is the power generation converted from the hydrogen storage capacity of the hydrogen storage module, also known as the hydrogen storage discharge capacity; the reserve power under the third mode is the sum of the remaining battery power and the hydrogen storage discharge capacity.

[0062] Step S2: When the reserve power is lower than a preset reference power, the reserve power is corrected to obtain a power correction value.

[0063] After obtaining the reserve power, considering the reliability of the off-grid energy available time forecast, especially the reliability when the reserve power is low, the reserve power needs to be corrected. Specifically:

[0064] A reference power is obtained, where the reference power is a value less than or equal to the maximum storage power of the off-grid energy station, and the specific value of the reference power can be calibrated and configured to ensure that the system or device can achieve the expected performance and function during operation.

[0065] The reserve power is compared with the reference power. When the reserve power is greater than or equal to the reference power and less than or equal to the maximum reserve power, the reserve power is directly output as the power correction value, which means that there is no need to correct the reserve power.

[0066] When the reserve power is less than the preset reference power, the difference between the reference power and the reserve power is calculated to obtain the power difference; the correction coefficient is obtained, and the product of the power difference and the correction coefficient is calculated to obtain the correction base; the reserve power is subtracted from the correction base to obtain the power correction value.

[0067] Electricity correction value E avl_tte The representative formula is:

[0068]

[0069] Where RF is the correction factor, which is a constant and can be calibrated and configured. The configuration range of the correction factor is 0 to 100%. res Is less than or equal to the maximum storage capacity E of the off-grid energy station max A constant, also called reference charge; E avl To reserve power.

[0070] Combination Figure 3 As shown, Figure 3 The horizontal axis in the middle is the reserve power E of the off-grid energy station avl , the vertical axis is the charge correction value E avl_tte .pass Figure 3 It can be seen that the correction factor RF and the reference power E res There is a relationship between:

[0071] When the correction factor RF = 0, the point on the horizontal axis is the origin (0, 0), which means that no correction is applied and the reference charge E res Does not affect calculations.

[0072] When the correction factor RF = 100% or RF = 1, the point on the horizontal axis is (E res / 2,0), which means that when the correction coefficient reaches its maximum value, the point on the horizontal axis is the reference power E res half.

[0073] When RF increases from 0 to 1, the point on the horizontal axis moves from the origin to (E res / 2,0), which indicates that as RF increases, the point on the horizontal axis moves along the positive direction of the x-axis, and the distance moved is proportional to RF.

[0074] By correcting the reserve power through RF, the available time prediction of the off-grid energy system can be adjusted and optimized to ensure accurate prediction under different conditions, which is equivalent to the correction value E avl_tte The purpose is to avl At the inflection point (E res , E res ) starts to reduce a portion of the power slowly and smoothly to ensure that the corrected E avl_tte It is reliable enough to ensure that the calculated duration value is reliable (slightly smaller), and it can also achieve the purpose of warning users in advance. Otherwise, if no correction is made, especially when the battery is low, the calculated and displayed duration may have errors, and the actual power supply may be insufficient and the power may be cut off, causing user complaints.

[0075] Step S3: Obtain power consumption data of the power load, determine the average power consumption of the power load according to the power consumption data, and determine the first available time of the off-grid energy station according to the power correction value and the average power consumption. The first available time is defined as the calculated value of the available time of the remaining power of the off-grid energy station.

[0076] In this embodiment, there are two methods for calculating the average power consumption. In the actual calculation process, the corresponding calculation method can be selected according to actual needs to calculate the average power consumption:

[0077] The first calculation method: define the daily power consumption from 00:00:00 to 23:59:59 as daily power consumption e day , in kWh / 24h. When you need to calculate the average power consumption of the previous N days, start from before 0:00 on the current day, count the daily power consumption from 00:00:00 to 23:59:59 in the N days before the current day (excluding power consumption after 0:00 on the current day), and calculate the average power consumption based on the daily power consumption of the previous N days; where N is a calibrable parameter.

[0078] The second calculation method: define the power consumption within 24 hours before the current day as daily power consumption e day , in kWh / 24h. When you need to calculate the average power consumption of the previous N days, start from the current time and convert the hourly power consumption e of the N days before the current time into kWh / 24h. h Add them up and divide by N*24 (i.e. the total number of hours in N days) to get the average power consumption; N is a calibrable parameter. For example, if the current time is 11:00 a.m., then the power consumption of each hour before 11:00 a.m. today will be included in the calculation.

[0079] In this embodiment, the first available time of the off-grid energy station can be obtained by dividing the corrected power correction value by the average power consumption. The first available time is expressed as:

[0080]

[0081] In the formula, H cal is the first available duration, E avl_tte is the charge correction value, e avg_tte is the average power consumption.

[0082] In some embodiments, after the first available time is calculated, the first available time may be directly pushed to a designated terminal for display.

[0083] In this embodiment, a dynamic display update mechanism is designed so that the display value can adjust the update frequency according to the change speed and amplitude of the calculated value to improve the user experience. The specific execution steps of the display update mechanism are as follows:

[0084] Get the current duration display value, which refers to the available power duration of the entire off-grid energy station currently displayed on the specified terminal;

[0085] Calculate the absolute difference between the first available duration and the current duration display value to obtain the duration difference;

[0086] Calculate the ratio percentage of the duration difference and the current duration display value to obtain the difference rate;

[0087] The update cycle is determined according to the difference rate, and the current duration display value is updated according to the update cycle to obtain the second available duration, and the second available duration is sent to the designated terminal for display. The second available duration is defined as the available duration display value of the remaining power of the off-grid energy station.

[0088] Among them, the representative formula of the difference rate is:

[0089]

[0090] In the formula, H cal is the first available duration, H dis_current Displays a value for the current duration.

[0091] The difference rate indicates the degree of deviation between the available time being displayed and the available time actually calculated. This percentage value helps to evaluate the accuracy of the available time displayed by the system and make adjustments as needed. If the value of F is large, it means that there is a large deviation between the available time being displayed and the available time actually calculated, and the system may need to be calibrated or optimized. If the value of F is small, it means that the available time displayed is relatively accurate.

[0092] In this embodiment, the representative formula for determining the update period according to the difference rate is:

[0093]

[0094] Where T is the update period in minutes, and F is the difference rate.

[0095] When the difference rate F is less than or equal to the preset difference (the preset difference is 15% in this embodiment), the update period T is calculated by subtracting 300 times F from 60 minutes; this means that when the difference rate is smaller, the update period is longer, the update speed of the displayed value becomes slower, and frequent updates are not required.

[0096] When the difference rate F is greater than the preset difference (the preset difference is 15% in this embodiment), no matter what the actual difference rate is, the update period T is fixed at 15 minutes; this means that when the difference rate is large, it is updated according to a fixed update period, and the update speed at this time is faster than when the difference rate is small, so that the update frequency is more frequent to reflect the actual situation.

[0097] The update cycle calculation method of this embodiment can slow down the update frequency when the calculated value does not change much, and can reduce the frequency of calculation and rendering, thereby saving CPU and memory resources and improving the overall performance of the system; at the same time, slowing down the update can reduce flickering and jumping on the screen, reduce user visual fatigue, and improve user experience.

[0098] Current duration display value H dis_current Each time the update is performed, the maximum change is limited to ±1h. Specifically, in this embodiment, the second available time length H dis_new The expression is as follows, which is used to determine how the second available duration of the off-grid energy station should be adjusted after each update cycle:

[0099]

[0100] In the formula, H dis_current Display value for current duration, H cal The first available duration.

[0101] If the first available time H is actually calculated cal Greater than or equal to the current duration display value H currently displayed dis_current Add 1 hour, then the second available time is H dis_new Should display the value H at the current duration dis_current Add 1 hour to the base.

[0102] If the first available duration H cal With the current duration display value H dis_current If the absolute difference between them is less than 1 hour, the second available time H dis_new Should be displayed with the current duration value H dis_current Remain unchanged.

[0103] If the first available duration H cal Less than or equal to the current duration display value H dis_current Subtract 1 hour, then the second available time is H dis_new Should display the value H at the current duration dis_current Reduce 1 hour from the previous day's average.

[0104] The second available time H dis_new The purpose of the expression is to ensure that reasonable adjustments are made to the actual calculated value at each update to maintain the accuracy and reliability of the displayed value. By limiting each change to a maximum of ±1 hour, drastic fluctuations in the displayed value can be avoided, providing users with more stable and reliable available time information.

[0105] The method for predicting the available time of an off-grid energy station proposed in an embodiment of the present invention can intuitively convey to users how long the remaining energy of the off-grid energy station can be used, which can effectively alleviate users' anxiety about electricity safety, ensure electricity safety, and improve users' energy usage experience.

[0106] Another embodiment of the present invention further provides a system for predicting the available duration of an off-grid energy station, which executes the above-mentioned method for predicting the available duration of an off-grid energy station.

[0107] The functions of each module in the system of the embodiment of the present invention can refer to the corresponding description in the above method, which will not be repeated here.

[0108] Another embodiment of the present invention provides an electronic device, Figure 4 FIG. 2 shows a structural block diagram of an electronic device according to an embodiment of the present invention. Figure 4 As shown, the electronic device includes: a memory 100 and a processor 200, wherein the memory 100 stores a computer program that can be run on the processor 200. When the processor 200 executes the computer program, the available time prediction method of the off-grid energy station in the above embodiment is implemented. The number of the memory 100 and the processor 200 can be one or more.

[0109] The electronic device also includes:

[0110] The communication interface 300 is used to communicate with external devices and perform data exchange transmission.

[0111] If the memory 100, the processor 200 and the communication interface 300 are implemented independently, the memory 100, the processor 200 and the communication interface 300 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0112] Optionally, in a specific implementation, if the memory 100, the processor 200 and the communication interface 300 are integrated on a chip, the memory 100, the processor 200 and the communication interface 300 can communicate with each other through an internal interface.

[0113] An embodiment of the present invention provides a computer-readable storage medium storing a computer program, which implements the method provided in the embodiment of the present invention when executed by a processor.

[0114] An embodiment of the present invention further provides a chip, which includes a processor for calling and executing instructions stored in the memory from the memory, so that a communication device equipped with the chip executes the method provided by the embodiment of the present invention.

[0115] An embodiment of the present invention also provides a chip, including: an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected via an internal connection path, and the processor is used to execute the code in the memory. When the code is executed, the processor is used to execute the method provided by the embodiment of the invention.

[0116] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. It is worth noting that the processor may be a processor supporting the advanced RISC machines (ARM) architecture.

[0117] Further, optionally, the above-mentioned memory may include a read-only memory and a random access memory, and may also include a non-volatile random access memory. The memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may include a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available. For example, static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct rambus RAM (DR RAM).

[0118] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0120] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0121] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for predicting the available time of an off-grid energy station, characterized in that: include: Obtaining the energy storage mode of the off-grid energy station, and collecting the corresponding reserve power according to the energy storage mode; The reserve power is the remaining power of the battery and / or the hydrogen storage discharge capacity; When the reserve power is lower than a preset reference power, the reserve power is corrected to obtain a power correction value; Power consumption data of the power load is acquired, average power consumption of the power load is determined according to the power consumption data, and a first available duration of the off-grid energy station is determined according to the power correction value and the average power consumption.

2. The method for predicting the available duration of an off-grid energy station according to claim 1, characterized in that: The energy storage modes include: Through a first mode of battery energy storage, the reserve power in the first mode is the remaining power of the battery; Converting the electric power into a second mode of hydrogen storage, wherein the reserve power in the second mode is the hydrogen storage discharge capacity; A third mode combining battery energy storage and hydrogen energy storage, wherein the reserve power in the third mode is the sum of the remaining power of the battery and the hydrogen storage discharge capacity.

3. The method for predicting the available duration of an off-grid energy station according to claim 1, characterized in that: Also includes: When the reserve power is higher than or equal to the reference power, the reserve power is directly output as the power correction value.

4. The method for predicting the available duration of an off-grid energy station according to claim 1, characterized in that: When the reserve power is lower than a preset reference power, correcting the reserve power includes: Calculate the difference between the reference power and the reserve power to obtain the power difference; the reference power is a value less than or equal to the maximum power storage capacity of the off-grid energy station; Obtaining a correction coefficient, calculating the product of the power difference and the correction coefficient, and obtaining a correction base; The power correction value is obtained by subtracting the correction base from the reserve power.

5. The method for predicting the available duration of an off-grid energy station according to claim 1, characterized in that: Determining the average power consumption of the power load according to the power consumption data includes: In the case where the power consumption data is the power consumption of the power load per hour within a specified number of days, the daily power consumption is calculated according to the power consumption data to obtain the daily power consumption; Calculating the sum of the daily power consumption within the specified number of days to obtain the total power consumption; An average value is calculated according to the total power consumption and the specified number of days to obtain the average power consumption.

6. The method for predicting the available duration of an off-grid energy station according to claim 1, characterized in that: Also includes: Acquire a current duration display value, and determine an update period according to a degree of deviation between the current duration display value and the first available duration; The current duration display value is updated according to the update cycle to obtain a second available duration; The second available time duration is sent to a designated terminal for display.

7. The method for predicting the available duration of an off-grid energy station according to claim 6, characterized in that: Determining the update period according to the deviation between the current duration display value and the first available duration includes: Calculate the absolute difference between the first available duration and the current duration display value to obtain a duration difference; Calculate the ratio percentage of the duration difference and the current duration display value to obtain a difference rate; When the difference rate is less than or equal to the preset difference, the corresponding update period is calculated according to the difference rate; When the difference rate is greater than the preset difference, the fixed update period is output.

8. A system for predicting the available time of an off-grid energy station, characterized in that: Execute the available duration prediction method of the off-grid energy station as described in any one of claims 1 to 7.

9. An electronic device, characterized in that: include: A processor and a memory, wherein the memory stores instructions, and the instructions are loaded and executed by the processor to implement the method for predicting the available duration of an off-grid energy station as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for predicting the available duration of an off-grid energy station according to any one of claims 1 to 7 is implemented.

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