Method and device for predicting service life of marine environment photovoltaic module

Abstract

The invention relates to the technical field of photovoltaic modules, in particular to a method and a device for predicting the service life of a photovoltaic module in a marine environment. According to the technical scheme provided by the invention, the average temperature value, the average irradiation intensity value and the average salt mist concentration value of the marine environment photovoltaic module in the preset time period are obtained, and the temperature effect value, the irradiation effect value and the salt mist effect value are sequentially obtained based on the average temperature value, the average irradiation intensity value and the average salt mist concentration value; and based on the temperature effect value, the irradiation effect value and the salt mist effect value, obtaining an accumulated attenuation value of the marine environment photovoltaic module, and based on the accumulated attenuation value, obtaining the expected life of the marine environment photovoltaic module. Therefore, according to the technical scheme, the cumulative attenuation value is calculated more comprehensively through the temperature effect value, the irradiation effect value and the salt mist effect value, the calculation precision of the cumulative attenuation value is improved, and then the accuracy of predicting the expected life of the marine environment photovoltaic module is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic modules, and in particular to a method and device for predicting the life of photovoltaic modules in a marine environment. Background Art

[0002] With the widespread application of photovoltaic power generation technology, the reliability and life prediction of photovoltaic modules have become important research directions. Especially in the marine environment, photovoltaic modules face unique challenges. Therefore, predicting the life of photovoltaic modules in the marine environment is of great significance.

[0003] However, in related technologies, the prediction methods for the life of photovoltaic modules in marine environments usually do not fully consider all factors that may affect the life of photovoltaic modules, which may lead to deviations in the prediction results.

[0004] Based on this, the present invention proposes a life prediction method and device for photovoltaic modules in a marine environment to solve the above technical problems. Summary of the invention

[0005] The present invention describes a method and device for predicting the life of a photovoltaic module in a marine environment, which can more accurately predict the life of a photovoltaic module in a marine environment.

[0006] According to a first aspect, the present invention provides a method for predicting the life of a photovoltaic module in a marine environment, comprising:

[0007] Obtain the average temperature value, average irradiance intensity value and average salt spray concentration value of the photovoltaic modules in the marine environment within a preset time period;

[0008] Based on the average temperature value, the average radiation intensity value and the average salt spray concentration value, a temperature effect value, a radiation effect value and a salt spray effect value are obtained in sequence;

[0009] Based on the temperature effect value, the radiation effect value and the salt spray effect value, a cumulative attenuation value of the marine environment photovoltaic module is obtained;

[0010] Based on the cumulative attenuation value, the expected life of the marine environment photovoltaic component is obtained.

[0011] According to a second aspect, the present invention provides a life prediction device for a photovoltaic module in a marine environment, comprising:

[0012] A data acquisition module is used to obtain the average temperature value, average radiation intensity value and average salt spray concentration value of the photovoltaic modules in the marine environment within a preset time period;

[0013] A data processing module, used to obtain a temperature effect value, a radiation effect value and a salt spray effect value in sequence based on the average temperature value, the average radiation intensity value and the average salt spray concentration value;

[0014] A cumulative attenuation value calculation module, used to obtain the cumulative attenuation value of the marine environment photovoltaic module based on the temperature effect value, the radiation effect value and the salt spray effect value;

[0015] The prediction module is used to obtain the expected life of the marine environment photovoltaic component based on the cumulative attenuation value.

[0016] According to the life prediction method and device of the marine environment photovoltaic module provided by the present invention, by obtaining the average temperature value, average irradiation intensity value and average salt spray concentration value of the marine environment photovoltaic module within a preset time period, based on the average temperature value, average irradiation intensity value and average salt spray concentration value, the temperature effect value, irradiation effect value and salt spray effect value are obtained in turn, based on the temperature effect value, irradiation effect value and salt spray effect value, the cumulative attenuation value of the marine environment photovoltaic module is obtained, and based on the cumulative attenuation value, the expected life of the marine environment photovoltaic module is obtained. Therefore, the above technical scheme, by the average temperature value, the average irradiation intensity value and the average salt spray concentration value, solves the temperature effect value, the irradiation effect value and the salt spray effect value in turn, which can reduce the impact of single data fluctuations on the accuracy of calculating the temperature effect value, the irradiation effect value and the salt spray effect value, and then calculates the cumulative attenuation value more comprehensively through the temperature effect value, the irradiation effect value and the salt spray effect value, improves the calculation accuracy of the cumulative attenuation value, and thus ensures the accuracy of predicting the expected life of the marine environment photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a flow chart of a method for predicting the life of a photovoltaic module in a marine environment provided by an embodiment of the present invention;

[0019] Figure 2 is a hardware architecture diagram of an electronic device provided by an embodiment of the present invention;

[0020] Figure 3 It is a structural diagram of a life prediction device for a photovoltaic module in a marine environment provided by an embodiment of the present invention;

[0021] Figure 4 It is a life curve diagram of a photovoltaic module in a marine environment provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the marine environment, photovoltaic modules face unique challenges. These challenges are mainly due to the characteristics of the marine environment, such as high salt spray concentration. The materials of photovoltaic modules suffer severe corrosion in a short period of time, which leads to performance degradation and shortened life. In the marine environment, salt spray corrosion is one of the most serious problems. The humid characteristics of the marine climate allow salt spray particles to be suspended in the air and deposited on the surface of photovoltaic modules. These salts combine with water to form an electrolyte solution, which promotes corrosion reactions on the metal surface and accelerates the aging of module materials. Studies have shown that the impact of salt spray on photovoltaic modules is not limited to surface corrosion, but may also cause structural damage to internal materials, thereby affecting their electrical performance and photoelectric conversion efficiency. In addition, temperature changes and strong radiation conditions in the marine environment also affect the life of photovoltaic modules. On the sea surface with strong sunlight, the modules may experience drastic temperature differences, which accelerates material fatigue and aging. The combined effect of high temperature and high radiation may cause thermal failure of photovoltaic modules, increasing the uncertainty of the operation of photovoltaic systems in the marine environment.

[0024] With the increasing demand for renewable energy, the ocean has become an important space for the expansion of photovoltaic power generation. Using the space on the sea surface can not only alleviate the pressure on land resources, but also utilize the reflection effect of the ocean to improve the overall power generation efficiency of the photovoltaic system. However, the long-term operation of offshore photovoltaic systems still faces the problems of material corrosion and aging. Therefore, it is necessary to accurately predict the expected life of photovoltaic modules in the marine environment and replace failed photovoltaic modules in time to ensure the stable operation of offshore photovoltaic systems.

[0025] To solve the above technical problems, please refer to Figure 1 The embodiment of the present invention provides a method for predicting the life of a photovoltaic module in a marine environment, the method comprising:

[0026] Step 100: Obtaining the average temperature value, average irradiance intensity value and average salt spray concentration value of the photovoltaic module in the marine environment within a preset time period;

[0027] Step 102: based on the average temperature value, the average radiation intensity value and the average salt spray concentration value, a temperature effect value, a radiation effect value and a salt spray effect value are obtained in sequence;

[0028] Step 104: based on the temperature effect value, the radiation effect value and the salt spray effect value, the cumulative attenuation value of the photovoltaic module in the marine environment is obtained;

[0029] Step 106: Based on the accumulated attenuation value, the expected life of the photovoltaic module in the marine environment is obtained.

[0030] In this embodiment, the present invention obtains the average temperature value, average irradiation intensity value and average salt spray concentration value of the marine environment photovoltaic module within a preset time period, and obtains the temperature effect value, irradiation effect value and salt spray effect value in turn based on the average temperature value, average irradiation intensity value and average salt spray concentration value, and obtains the cumulative attenuation value of the marine environment photovoltaic module based on the temperature effect value, irradiation effect value and salt spray effect value, and obtains the expected life of the marine environment photovoltaic module based on the cumulative attenuation value, that is, the total service life of the marine environment photovoltaic module. Therefore, the above technical scheme, by the average temperature value, the average irradiation intensity value and the average salt spray concentration value, solves the temperature effect value, the irradiation effect value and the salt spray effect value in turn, which can reduce the influence of the single data fluctuation on the accuracy of calculating the temperature effect value, the irradiation effect value and the salt spray effect value, and then calculates the cumulative attenuation value more comprehensively through the temperature effect value, the irradiation effect value and the salt spray effect value, improves the calculation accuracy of the cumulative attenuation value, and thus ensures the accuracy of predicting the expected life of the marine environment photovoltaic module.

[0031] Among them, within a preset time period, multiple irradiance meters are arranged on the marine environment photovoltaic module, and the multiple irradiance meters are arranged at different positions on the marine environment photovoltaic module. The irradiance intensity values ​​of multiple sampling points on the multiple marine environment photovoltaic modules are collected by the multiple irradiance meters, and multiple collections are performed within the preset time period to obtain a group of irradiance intensity values, and then the group of irradiance intensity values ​​is averaged after removing a minimum value and a maximum value to obtain an average irradiance intensity value. Collecting data in this way can reduce the impact of single data fluctuations on the accuracy of the final collected data and improve the stability of the final prediction results.

[0032] Similarly, the average temperature value is collected by multiple temperature sensors installed on the marine environment photovoltaic module. The multiple temperature sensors are set at different positions on the marine environment photovoltaic module. The temperature data of multiple sampling points on the marine environment photovoltaic module are collected by multiple temperature sensors, and multiple collections are performed within a preset time period to obtain a set of temperature data. The set of temperature data is then averaged after removing a minimum value and a maximum value to obtain an average temperature value.

[0033] Similarly, the average salt spray concentration is collected by multiple salt spray sensors installed on the marine environment photovoltaic module. The multiple salt spray sensors are set at different positions on the marine environment photovoltaic module. The salt spray concentration values ​​of multiple sampling points on the marine environment photovoltaic modules are collected by multiple salt spray sensors, and multiple collections are performed within a preset time period to obtain a set of salt spray concentration values. Then, this set of temperature data is averaged after removing a minimum value and a maximum value to obtain the average salt spray concentration value, and then the temperature effect value is obtained based on the average temperature value; wherein the temperature effect value is used to characterize the influence of temperature on the power generation of the marine environment photovoltaic module. Then, according to the average irradiation intensity value, the irradiation effect value is obtained; wherein, the irradiation effect value is used to characterize the influence of irradiation intensity on the power generation of the marine environment photovoltaic module. Then, according to the average salt spray concentration value, the salt spray effect value is obtained; wherein, the salt spray effect value; is used to characterize the influence of salt spray concentration on the power generation of the marine environment photovoltaic module.

[0034] In this way, the cumulative attenuation value of the marine environment photovoltaic module is calculated by the temperature effect value, the irradiation effect value and the salt spray effect value, which are the three parameters that affect the life of the marine environment photovoltaic module, to ensure the accuracy of the calculation of the cumulative attenuation value of the marine environment photovoltaic module. Since the cumulative attenuation value of the marine environment photovoltaic module is inversely proportional to the expected life of the marine environment photovoltaic module, that is, the expected life is equal to the inverse of the cumulative attenuation value, the expected life of the marine environment photovoltaic module can be calculated by the cumulative attenuation value. Those skilled in the art can customize the preset time period according to actual usage.

[0035] It should also be noted that in marine photovoltaic modules, the cumulative attenuation data refers to the percentage data of the power generation of photovoltaic modules compared to the initial power during long-term use (in the marine environment) as time goes by and environmental factors affect it. For example, a marine photovoltaic module with an initial power of 300 watts will drop to 270 watts after a period of time, so the attenuation rate is (300-270) ÷ 300 × 100% = 10%. These data are generally obtained through long-term field monitoring or accelerated aging tests.

[0036] It should also be noted that the temperature sensor can be an optical fiber temperature sensor or a thermal resistor temperature sensor. The optical fiber temperature sensor can use certain optical properties of the optical fiber (such as light intensity, wavelength, phase, etc.) to change with temperature to achieve temperature measurement. This sensor has strong anti-electromagnetic interference ability, can work in complex marine electromagnetic environments, and is corrosion-resistant. The thermal resistor temperature sensor uses the property that the resistance value of metal or semiconductor materials changes with temperature to measure temperature. For example, the platinum resistance temperature sensor has high accuracy and good stability, and can provide reliable data in seawater temperature measurement. The salt spray concentration sensor can be a conductivity salt spray concentration sensor or an optical salt spray concentration sensor. The principle of the conductivity salt spray concentration sensor is that the conductivity of the salt spray solution is related to its concentration. When salt spray enters the sensor, it will change the conductivity between the electrodes in the sensor, and the salt spray concentration is determined by measuring the conductivity. This sensor can measure the change of salt spray concentration more accurately, and the structure is relatively simple, but it is easily interfered by other conductive substances. The optical salt spray concentration sensor uses the refraction, scattering and other characteristics of light. When salt spray appears in the optical path, it changes the propagation characteristics of light, and the concentration of salt spray is inferred based on the changes in these optical parameters. It has high sensitivity and fast response speed, and the optical components need to be calibrated and maintained regularly. The radiometer can be a scintillator type radiometer or an ionization chamber type radiometer. The scintillator type radiometer has a scintillator inside. When the radiation particles interact with the scintillator, the scintillator will emit fluorescence, which is received by photodetectors such as photomultiplier tubes and converted into electrical signals to measure the radiation intensity. This type of radiometer has high sensitivity and can be used to measure radiation at sea. The principle of the ionization chamber type radiometer is to use ionizing radiation to ionize the gas. The generated ion pairs form an ionization current under the action of the electric field, and the radiation dose is determined by measuring the current. Its advantages are wide measurement range and high accuracy.

[0037] In one embodiment of the present invention, the temperature effect value is determined by the following formula:

[0038]

[0039] Wherein, WX is the temperature effect value, A is the pre-exponential factor (also called frequency factor), which is a constant independent of temperature and reflects the influence of factors such as the collision frequency of molecules in the reaction system on the reaction rate. Technicians in this field can customize A according to actual usage. Ea is the activation energy, which is generally a constant for the same failure mode of the same type of product. The overall attenuation of photovoltaic modules ranges from 70kJ / mol to 100kJ / mol. R is the gas constant, which is 8.314J / (mol.K). T is the average temperature value.

[0040] In this embodiment, considering the influence of temperature on the expected life of the photovoltaic module in the marine environment, the present invention adopts the Arrhenius equation to calculate the influence of temperature on the expected life of the photovoltaic module in the marine environment, that is, the temperature effect value. The influence of temperature on the expected life of the photovoltaic module in the marine environment can be accurately calculated by the Arrhenius equation. In addition, the Arrhenius equation is applicable to a variety of reaction types: whether it is an elementary reaction or a complex non-elementary reaction, or even some heterogeneous reactions, the Arrhenius equation has a certain applicability. This makes it widely used in the research of reaction kinetics in many fields such as chemistry, chemical engineering, materials science, and biochemistry. Applicable to different material systems: for various substances, including gases, liquids, solids, and reactions between them, the equation can be described and analyzed to a certain extent. For example, in studying the corrosion process of metals, the degradation reaction of polymers, and the metabolic reactions in organisms, the Arrhenius equation has played an important role.

[0041] In one embodiment of the present invention, the radiation effect value is determined by the following formula:

[0042]

[0043] In the formula, FX is the radiation effect value, G is the average radiation intensity value, G ref is the reference irradiance value, which is 1000W / m 2 .

[0044] In this embodiment, the strong radiation conditions in the marine environment also affect the life of the photovoltaic module. On the sea surface with strong sunlight, the module may experience severe strong radiation, which accelerates the fatigue and aging of the material, and thus affects the power generation of the photovoltaic module. The inventor creatively thought of calculating the impact of the radiation intensity value on the expected power generation of the photovoltaic module in the marine environment, that is, the radiation effect value, by the average radiation intensity value.

[0045] In one embodiment of the present invention, the salt spray effect value is determined by the following formula:

[0046] YF=e -k×C

[0047] Wherein, YF is the salt spray effect value, C is the average salt spray concentration value, k is the attenuation coefficient, and the attenuation coefficient is determined by calibrating the benchmark parameters based on actual operation data, combined with field monitoring data verification and optimization model verification, that is, technicians in this field can customize the attenuation coefficient according to actual conditions.

[0048] In this embodiment, since the marine environment photovoltaic module is set at the seaside, the salt and water in the seawater easily combine to form an electrolyte solution, which promotes the corrosion reaction on the metal surface of the photovoltaic module, accelerates the aging of the component materials, and affects the power generation of the photovoltaic module. The inventor creatively thought of calculating the influence of the salt spray concentration value on the power generation of the marine environment photovoltaic module by averaging the salt spray concentration value, that is, the salt spray effect value.

[0049] In one embodiment of the present invention, the cumulative attenuation value of the marine environment photovoltaic module is determined by the following formula:

[0050]

[0051] Where SJ is the cumulative attenuation value.

[0052] In this embodiment, since the cumulative attenuation value of the photovoltaic module in the marine environment is affected by many factors, the inventor creatively thought of constructing a formula for calculating the cumulative attenuation value of the photovoltaic module in the marine environment by jointly constructing the salt spray effect value, the temperature effect value and the radiation effect value, so as to ensure the accuracy of the calculated cumulative attenuation value, thereby improving the accuracy of the life prediction of the photovoltaic module in the marine environment.

[0053] In one embodiment of the present invention, see the attached Figure 4 The peak power of photovoltaic panels gradually decreases with time. When the peak power decreases to the failure line, the life of photovoltaic modules in the marine environment also reaches the end.

[0054] In summary, the present invention has the following advantages: 1) The temperature effect value is calculated by the average temperature value, the radiation effect value is calculated by the average radiation intensity value, and the salt spray effect value is calculated by the average salt spray concentration value. It can reduce the impact of single data fluctuations on the accuracy of the final calculated data and improve the stability of the final prediction results. 2) Through the salt spray effect value, temperature effect value and radiation effect value, the life prediction of photovoltaic modules in the marine environment can more comprehensively consider all factors that may affect the life of photovoltaic modules, thereby improving the accuracy of the life prediction of photovoltaic modules in the marine environment. This method can not only help engineers better design and maintain photovoltaic systems in the marine environment, but also provide data support for relevant policy makers to promote the application and development of renewable energy in the marine environment.

[0055] like Figure 2 , Figure 3 As shown, an embodiment of the present invention provides a life prediction device for photovoltaic modules in a marine environment. The device embodiment can be implemented by software, or by hardware or a combination of software and hardware. From the hardware level, Figure 2As shown, it is a hardware architecture diagram of an electronic device where a life prediction device for a photovoltaic module in a marine environment provided by an embodiment of the present invention is located. Figure 2 In addition to the processor, memory, network interface, and non-volatile memory shown, the electronic device in the embodiment may also include other hardware, such as a forwarding chip responsible for processing messages, etc. Taking software implementation as an example, Figure 3 As shown, as a device in a logical sense, the CPU of the electronic device in which it is located reads the corresponding computer program in the non-volatile memory into the internal memory and runs it.

[0056] like Figure 3 As shown, this embodiment provides a life prediction device for a photovoltaic module in a marine environment, comprising:

[0057] The data acquisition module 300 is used to obtain the average temperature value, average radiation intensity value and average salt spray concentration value of the photovoltaic module in the marine environment within a preset time period;

[0058] A data processing module 302 is used to obtain a temperature effect value, a radiation effect value and a salt spray effect value in sequence based on the average temperature value, the average radiation intensity value and the average salt spray concentration value;

[0059] A cumulative attenuation value calculation module 304 is used to obtain the cumulative attenuation value of the marine environment photovoltaic module based on the temperature effect value, the radiation effect value and the salt spray effect value;

[0060] The prediction module 306 is used to obtain the expected life of the marine environment photovoltaic assembly based on the cumulative attenuation value.

[0061] In an embodiment of the present invention, the data acquisition module 300 can be used to execute step 100 in the above method embodiment, the data processing module 302 can be used to execute step 102 in the above method embodiment, the cumulative attenuation value calculation module 304 can be used to execute step 104 in the above method embodiment, and the prediction module 306 can be used to execute step 106 in the above method embodiment.

[0062] In one embodiment of the present invention, the temperature effect value is determined by the following formula:

[0063]

[0064] Wherein, WX is the temperature effect value, A is the frequency factor, Ea is the activation energy, R is the gas constant, and T is the average temperature value.

[0065] In one embodiment of the present invention, the radiation effect value is determined by the following formula:

[0066]

[0067] Wherein, FX is the radiation effect value, G is the average radiation intensity value, G ref is the reference irradiance value.

[0068] In one embodiment of the present invention, the salt spray effect value is determined by the following formula:

[0069] YF=e -k×C

[0070] Wherein, YF is the salt spray effect value, C is the average salt spray concentration value, and k is the attenuation coefficient.

[0071] In one embodiment of the present invention, the cumulative attenuation value of the marine environment photovoltaic module is determined by the following formula:

[0072]

[0073] Wherein, SJ is the cumulative attenuation value.

[0074] It is to be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the life prediction device for a marine environment photovoltaic module. In other embodiments of the present invention, a life prediction device for a marine environment photovoltaic module may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0075] The information interaction, execution process and other contents between the modules in the above-mentioned device are based on the same concept as the embodiment of the method of the present invention. For the specific contents, please refer to the description in the embodiment of the method of the present invention, and no further description is given here.

[0076] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, a method for predicting the life of a photovoltaic component in a marine environment in any embodiment of the present invention is implemented.

[0077] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the processor executes a method for predicting the life of a photovoltaic component in a marine environment according to any embodiment of the present invention.

[0078] Specifically, a system or device equipped with a storage medium can be provided, on which software program code that implements the functions of any of the above-mentioned embodiments is stored, and a computer (or CPU or MPU) of the system or device can be enabled to read and execute the program code stored in the storage medium.

[0079] In this case, the program code itself read from the storage medium can realize the function of any one of the above-mentioned embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.

[0080] The storage medium embodiments for providing the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), a magnetic tape, a non-volatile memory card, and a ROM. Alternatively, the program code can be downloaded from a server computer by a communication network.

[0081] In addition, it should be clear that the functions of any of the above embodiments can be implemented not only by executing the program code read by the computer, but also by enabling an operating system operating on the computer to complete part or all of the actual operations based on instructions from the program code.

[0082] In addition, it can be understood that the program code read from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then based on the instructions of the program code, a CPU installed on the expansion board or expansion module is enabled to perform part or all of the actual operations, thereby realizing the functions of any of the above-mentioned embodiments.

[0083] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0084] A person of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, etc., various media that can store program codes.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for predicting the life of a photovoltaic module in a marine environment, characterized in that: include: Obtain the average temperature value, average irradiance intensity value and average salt spray concentration value of the photovoltaic modules in the marine environment within a preset time period; Based on the average temperature value, the average radiation intensity value and the average salt spray concentration value, a temperature effect value, a radiation effect value and a salt spray effect value are obtained in sequence; Based on the temperature effect value, the radiation effect value and the salt spray effect value, a cumulative attenuation value of the marine environment photovoltaic module is obtained; Based on the cumulative attenuation value, the expected life of the marine environment photovoltaic component is obtained.

2. The method according to claim 1, characterized in that: The temperature effect value is determined by the following formula: Wherein, WX is the temperature effect value, A is the frequency factor, Ea is the activation energy, R is the gas constant, and T is the average temperature value.

3. The method according to claim 2, characterized in that The radiation effect value is determined by the following formula: In the formula, FX is the radiation effect value, G is the average radiation intensity value, G ref is the reference irradiance value.

4. The method according to claim 3, characterized in that The salt spray effect value is determined by the following formula: YF=e -k×C Wherein, YF is the salt spray effect value, C is the average salt spray concentration value, and k is the attenuation coefficient.

5. The method according to claim 4, characterized in that The cumulative attenuation value of the marine environment photovoltaic module is determined by the following formula: Wherein, SJ is the cumulative attenuation value.

6. A life prediction device for photovoltaic modules in a marine environment, characterized in that: include: A data acquisition module is used to obtain the average temperature value, average radiation intensity value and average salt spray concentration value of the photovoltaic modules in the marine environment within a preset time period; A data processing module, used to obtain a temperature effect value, a radiation effect value and a salt spray effect value in sequence based on the average temperature value, the average radiation intensity value and the average salt spray concentration value; A cumulative attenuation value calculation module, used to obtain the cumulative attenuation value of the marine environment photovoltaic module based on the temperature effect value, the radiation effect value and the salt spray effect value; The prediction module is used to obtain the expected life of the marine environment photovoltaic component based on the cumulative attenuation value.

7. The device according to claim 6, characterized in that The temperature effect value is determined by the following formula: Wherein, WX is the temperature effect value, A is the frequency factor, Ea is the activation energy, R is the gas constant, and T is the average temperature value.

8. The device according to claim 7, characterized in that The radiation effect value is determined by the following formula: In the formula, FX is the radiation effect value, G is the average radiation intensity value, G ref is the reference irradiance value.

9. The device according to claim 8, characterized in that The salt spray effect value is determined by the following formula: YF=e -k×C Wherein, YF is the salt spray effect value, C is the average salt spray concentration value, and k is the attenuation coefficient.

10. The device according to claim 9, characterized in that The cumulative attenuation value of the marine environment photovoltaic module is determined by the following formula: Wherein, SJ is the cumulative attenuation value.

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