CN117176075A - Method and device for cleaning and detecting photovoltaic cell panel, photovoltaic power station and storage medium - Google Patents
Method and device for cleaning and detecting photovoltaic cell panel, photovoltaic power station and storage medium Download PDFInfo
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Abstract
本发明公开了一种光伏电池板的清洁检测方法及装置、光伏电站和存储介质，所述方法包括：获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积；将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度；将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率，并根据能量转换效率确定光伏电池板的清洁频次。本发明的方法，能够为光伏电池板提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。
The invention discloses a cleaning detection method and device for photovoltaic panels, a photovoltaic power station and a storage medium. The method includes: obtaining wind speed information and dust particle diameter information of the environment where the photovoltaic panels are located, and obtaining the area of the photovoltaic panels. ; Input wind speed information and dust particle diameter information into the preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; According to the dust deposition rate corresponding to each dust particle diameter, each dust particle diameter and the photovoltaic cell The area of the photovoltaic panel determines the dust concentration on the photovoltaic panel; input the dust concentration on the photovoltaic panel into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel, and determine the cleaning frequency of the photovoltaic panel based on the energy conversion efficiency. . The method of the present invention can provide an effective cleaning cycle for photovoltaic panels, thereby greatly reducing the power loss caused by dust to the photovoltaic power station.
Description
技术领域Technical field
本发明涉及光伏系统技术领域，尤其涉及一种光伏电池板的清洁检测方法、一种计算机可读存储介质、一种光伏电站和一种光伏电池板的清洁检测装置。The present invention relates to the technical field of photovoltaic systems, and in particular to a cleaning detection method for photovoltaic panels, a computer-readable storage medium, a photovoltaic power station and a cleaning detection device for photovoltaic panels.
背景技术Background technique
光伏发电是一种清洁、环保、经济高效的能源发电技术，2020年，全球累计光伏装机容量为760.4GW，至少有20个国家的装机容量超过1GW。灰尘颗粒积聚在光伏板表面，与空气中的水滴或粘性物质结合形成灰尘层，显著降低了光伏板的能量转换效率和使用寿命。研究表明，灰尘会使光伏系统的输出降低2％-10％，最高可达25％。因此，研究光伏板表面的灰尘沉积机制对于光伏电站的日常运行和维护以及清洁策略的制定至关重要。Photovoltaic power generation is a clean, environmentally friendly, cost-effective energy power generation technology. In 2020, the global cumulative installed photovoltaic capacity was 760.4GW, and at least 20 countries have installed capacity exceeding 1GW. Dust particles accumulate on the surface of photovoltaic panels and combine with water droplets or sticky substances in the air to form a dust layer, which significantly reduces the energy conversion efficiency and service life of photovoltaic panels. Research shows that dust can reduce the output of a photovoltaic system by 2%-10% and up to 25%. Therefore, studying the dust deposition mechanism on the surface of photovoltaic panels is crucial for the daily operation and maintenance of photovoltaic power plants and the development of cleaning strategies.
相关技术中，传统的电站清洗频率的预测基本只考虑灰尘的正常积累(线性关系)，并未考虑灰尘颗粒大小和风速对灰尘积累上的影响，因此提供的清洗周期并不准确，从而使得灰尘对光伏电站的发电量造成损失。In related technologies, the traditional prediction of cleaning frequency of power stations basically only considers the normal accumulation of dust (linear relationship), and does not consider the impact of dust particle size and wind speed on dust accumulation. Therefore, the cleaning cycle provided is inaccurate, which makes the dust Cause losses to the power generation of photovoltaic power stations.
发明内容Contents of the invention
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明的第一个目的在于提出一种光伏电池板的清洁检测方法，能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。The present invention aims to solve one of the technical problems in the related art, at least to a certain extent. To this end, the first purpose of the present invention is to propose a cleaning detection method for photovoltaic panels that can determine the cleaning frequency of photovoltaic panels based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the risk of dust Power loss caused to photovoltaic power stations.
本发明的第二个目的在于提出一种计算机可读存储介质。The second object of the present invention is to provide a computer-readable storage medium.
本发明的第三个目的在于提出一种光伏电站。The third object of the present invention is to provide a photovoltaic power station.
本发明的第四个目的在于提出一种光伏电池板的清洁检测装置。The fourth object of the present invention is to provide a cleaning detection device for photovoltaic panels.
为达到上述目的，本发明第一方面实施例提出了一种光伏电池板的清洁检测方法，所述方法包括：获取所述光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取所述光伏电池板的面积；将所述风速信息和所述灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及所述光伏电池板的面积确定所述光伏电池板上的灰尘浓度；将所述光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得所述光伏电池板的能量转换效率，并根据所述能量转换效率确定所述光伏电池板的清洁频次。In order to achieve the above object, a first embodiment of the present invention proposes a cleaning detection method for photovoltaic panels. The method includes: obtaining wind speed information and dust particle diameter information of the environment in which the photovoltaic panels are located, and obtaining the The area of the photovoltaic panel; input the wind speed information and the dust particle diameter information into the preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; according to the dust deposition corresponding to each dust particle diameter rate, the diameter of each dust particle and the area of the photovoltaic panel determine the dust concentration on the photovoltaic panel; input the dust concentration on the photovoltaic panel into a preset energy conversion efficiency model to obtain the photovoltaic cell The energy conversion efficiency of the panel, and the cleaning frequency of the photovoltaic panel is determined based on the energy conversion efficiency.
根据本发明实施例的光伏电池板的清洁检测方法，首先获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积；然后将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；再根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度；最后将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率，并根据能量转换效率确定光伏电池板的清洁频次。由此，该方法能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the cleaning detection method of photovoltaic panels according to the embodiment of the present invention, wind speed information and dust particle diameter information of the environment where the photovoltaic panels are located are first obtained, and the area of the photovoltaic panels is obtained; and then the wind speed information and dust particle diameter information are input into the preset Set the dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; then determine the dust on the photovoltaic panel based on the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the area of the photovoltaic panel. concentration; finally, input the dust concentration on the photovoltaic panel into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel, and determine the cleaning frequency of the photovoltaic panel based on the energy conversion efficiency. As a result, this method can determine the cleaning frequency of photovoltaic panels based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the power loss caused by dust to the photovoltaic power station.
另外，根据本发明上述实施例的光伏电池板的清洁检测方法，还可以具有如下的附加技术特征：In addition, the cleaning detection method for photovoltaic panels according to the above embodiments of the present invention may also have the following additional technical features:
根据本发明的一个实施例，根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及所述光伏电池板的面积确定所述光伏电池板上的灰尘浓度，包括：根据每种灰尘颗粒直径对应的灰尘沉积速率和每种灰尘颗粒直径确定所述光伏电池板上的灰尘质量；根据所述光伏电池板上的灰尘质量和所述光伏电池板的面积确定所述光伏电池板上的灰尘浓度。According to an embodiment of the present invention, determining the dust concentration on the photovoltaic panel according to the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle and the area of the photovoltaic panel includes: according to each type of dust The dust deposition rate corresponding to the particle diameter and the diameter of each dust particle determine the dust quality on the photovoltaic panel; the dust quality on the photovoltaic panel is determined based on the dust quality on the photovoltaic panel and the area of the photovoltaic panel. Dust concentration.
根据本发明的一个实施例，根据以下公式确定所述光伏电池板上的灰尘浓度：According to an embodiment of the present invention, the dust concentration on the photovoltaic panel is determined according to the following formula:
其中，C表示所述光伏电池板上的灰尘浓度，n表示灰尘颗粒的种类数量，ρ表示灰尘的密度，di表示第i种灰尘颗粒的直径，λi表示第i种颗粒直径的灰尘颗粒对应的积尘速率，Nk,i表示第i种颗粒直径的灰尘颗粒数量，T表示采样时间，A表示所述光伏电池板的面积，td表示粒子弛豫时间。Among them, C represents the dust concentration on the photovoltaic panel, n represents the number of types of dust particles, ρ represents the density of dust, di represents the diameter of the i-th dust particle, and λ i represents the dust particle with the diameter of the i-th particle. The corresponding dust accumulation rate, N k,i represents the number of dust particles with the i-th particle diameter, T represents the sampling time, A represents the area of the photovoltaic panel, and t d represents the particle relaxation time.
根据本发明的一个实施例，所述积尘速率模型根据以下公式进行表达：According to an embodiment of the present invention, the dust accumulation rate model is expressed according to the following formula:
其中，λi表示第i种颗粒直径的灰尘颗粒对应的积尘速率，v表示所述风速信息。Among them, λ i represents the dust accumulation rate corresponding to the i-th particle diameter dust particles, and v represents the wind speed information.
根据本发明的一个实施例，所述能量转换效率模型根据以下公式进行表达：According to an embodiment of the present invention, the energy conversion efficiency model is expressed according to the following formula:
其中，ηac表示所述光伏电池板的能量转换效率，ηclean表示光伏电池板在清洁条件下的参考转换效率，a表示积尘的影响系数。Among them, eta ac represents the energy conversion efficiency of the photovoltaic panel, eta clean represents the reference conversion efficiency of the photovoltaic panel under clean conditions, and a represents the influence coefficient of dust accumulation.
根据本发明的一个实施例，所述光伏电池板在清洁条件下的参考转换效率根据以下步骤确定：获取所述光伏电池板的输出电压和输出电流，并获取所述光伏电池板所处环境的辐照度；根据所述光伏电池板的输出电压和输出电流、所述辐照度和所述光伏电池板的面积确定所述参考转换效率。According to an embodiment of the present invention, the reference conversion efficiency of the photovoltaic panel under clean conditions is determined according to the following steps: obtaining the output voltage and output current of the photovoltaic panel, and obtaining the environment of the photovoltaic panel. Irradiance; the reference conversion efficiency is determined based on the output voltage and output current of the photovoltaic panel, the irradiance, and the area of the photovoltaic panel.
根据本发明的一个实施例，根据以下公式确定所述参考转换效率：According to an embodiment of the present invention, the reference conversion efficiency is determined according to the following formula:
其中，U表示所述光伏电池板的输出电压，I表示所述光伏电池板的输出电流，G表示所述光伏电池板所处环境的辐照度。Wherein, U represents the output voltage of the photovoltaic panel, I represents the output current of the photovoltaic panel, and G represents the irradiance of the environment where the photovoltaic panel is located.
为达到上述目的，本发明第二方面实施例提出了一种计算机可读存储介质，其上存储有光伏电池板的清洁检测程序，该清洁检测程序被处理器执行时实现上述的光伏电池板的清洁检测方法。In order to achieve the above object, a second embodiment of the present invention proposes a computer-readable storage medium on which a cleaning detection program for photovoltaic panels is stored. When the cleaning detection program is executed by a processor, the above-mentioned cleaning detection program for photovoltaic panels is realized. Cleaning detection methods.
根据本发明实施例的计算机可读存储介质，通过上述的光伏电池板的清洁检测方法，能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the computer-readable storage medium of the embodiment of the present invention, through the above-mentioned photovoltaic panel cleaning detection method, the cleaning frequency of the photovoltaic panel can be determined based on the dust particle diameter and wind speed to provide an effective cleaning cycle, thereby greatly reducing the cost of cleaning the photovoltaic panel. The power loss caused by dust to photovoltaic power stations.
为达到上述目的，本发明第三方面实施例提出了一种光伏电站，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的光伏电池板的清洁检测程序，所述处理器执行所述清洁检测程序时，实现上述的光伏电池板的清洁检测方法。In order to achieve the above object, the third embodiment of the present invention proposes a photovoltaic power station, including: a memory, a processor, and a photovoltaic panel cleaning detection program stored in the memory and runable on the processor, When the processor executes the cleaning detection program, the above-mentioned cleaning detection method of the photovoltaic cell panel is implemented.
根据本发明实施例的光伏电站，通过上述的光伏电池板的清洁检测方法，能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the photovoltaic power station according to the embodiment of the present invention, through the above-mentioned photovoltaic panel cleaning detection method, the cleaning frequency of the photovoltaic panel can be determined based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the impact of dust on photovoltaic panels. Power loss caused by power stations.
为达到上述目的，本发明第四方面实施例提出了一种光伏电池板的清洁检测装置，包括：获取模块，用于获取所述光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取所述光伏电池板的面积；积尘速率确定模块，用于将所述风速信息和所述灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；灰尘浓度确定模块，用于根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及所述光伏电池板的面积确定所述光伏电池板上的灰尘浓度；转换效率确定模块，用于将所述光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得所述光伏电池板的能量转换效率；清洁检测模块，用于根据所述能量转换效率确定所述光伏电池板的清洁频次。In order to achieve the above object, the fourth embodiment of the present invention proposes a cleaning detection device for photovoltaic panels, including: an acquisition module for acquiring wind speed information and dust particle diameter information of the environment where the photovoltaic panels are located, and Obtain the area of the photovoltaic panel; a dust accumulation rate determination module is used to input the wind speed information and the dust particle diameter information into a preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; a dust concentration determination module for determining the dust concentration on the photovoltaic panel based on the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle and the area of the photovoltaic panel; a conversion efficiency determination module for The dust concentration on the photovoltaic panel is input into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel; a cleaning detection module is used to determine the cleaning of the photovoltaic panel based on the energy conversion efficiency. frequency.
根据本发明实施例的光伏电池板的清洁检测装置，获取模块获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积；积尘速率确定模块将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；灰尘浓度确定模块根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度；转换效率确定模块将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率；清洁检测模块根据能量转换效率确定光伏电池板的清洁频次。由此，该装置能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the photovoltaic panel cleaning detection device according to the embodiment of the present invention, the acquisition module obtains the wind speed information and dust particle diameter information of the environment where the photovoltaic panel is located, and obtains the area of the photovoltaic panel; the dust accumulation rate determination module combines the wind speed information and dust The particle diameter information is input into the preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; the dust concentration determination module is based on the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the size of the photovoltaic panel. The area determines the dust concentration on the photovoltaic panel; the conversion efficiency determination module inputs the dust concentration on the photovoltaic panel into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel; the cleaning detection module determines the photovoltaic cell based on the energy conversion efficiency How often the board is cleaned. As a result, the device can determine the cleaning frequency of photovoltaic panels based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the power loss caused by dust to the photovoltaic power station.
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
附图说明Description of drawings
图1为根据本发明实施例的光伏电池板的清洁检测方法的流程图；Figure 1 is a flow chart of a cleaning detection method for photovoltaic panels according to an embodiment of the present invention;
图2为根据本发明实施例的光伏电站的方框示意图；Figure 2 is a block diagram of a photovoltaic power station according to an embodiment of the present invention;
图3为根据本发明实施例的光伏电池板的清洁检测装置的方框示意图。Figure 3 is a block diagram of a photovoltaic panel cleaning detection device according to an embodiment of the present invention.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and are not to be construed as limiting the present invention.
下面参考附图描述本发明实施例提出的光伏电池板的清洁检测方法、计算机可读存储介质、光伏电站和光伏电池板的清洁检测装置。The following describes the photovoltaic panel cleaning detection method, computer-readable storage medium, photovoltaic power station and photovoltaic panel cleaning detection device proposed by the embodiments of the present invention with reference to the accompanying drawings.
图1为根据本发明实施例的光伏电池板的清洁检测方法的流程图。Figure 1 is a flow chart of a photovoltaic panel cleaning detection method according to an embodiment of the present invention.
如图1所示，本发明实施例的光伏电池板的清洁检测方法，可包括以下步骤：As shown in Figure 1, the cleaning detection method of photovoltaic panels according to the embodiment of the present invention may include the following steps:
S1，获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积。S1, obtain the wind speed information and dust particle diameter information of the environment where the photovoltaic panel is located, and obtain the area of the photovoltaic panel.
其中，光伏电池板的控制器可以通过与云端或服务器联网，获取所处环境的天气情况，从而可以得到所处环境的风速信息和空气质量情况，进而可以得到空气中悬浮的灰尘颗粒的种类以及每种灰尘颗粒对应的直径。光伏电池板的控制器中存储有对应的光伏电池板的面积。Among them, the controller of the photovoltaic panel can obtain the weather conditions of the environment by connecting to the cloud or server, so that the wind speed information and air quality conditions of the environment can be obtained, and then the types of dust particles suspended in the air can be obtained. The corresponding diameter of each dust particle. The controller of the photovoltaic panel stores the area of the corresponding photovoltaic panel.
S2，将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率。S2, input the wind speed information and dust particle diameter information into the preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter.
S3，根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度。S3, determine the dust concentration on the photovoltaic panel according to the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the area of the photovoltaic panel.
S4，将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率，并根据能量转换效率确定光伏电池板的清洁频次。S4, input the dust concentration on the photovoltaic panel into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel, and determine the cleaning frequency of the photovoltaic panel based on the energy conversion efficiency.
具体而言，悬浮在大气中的灰尘颗粒物及其通过风的运动是光伏电池板上灰尘沉积的主要原因。控制器在获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息后，将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，根据风速信息和每种灰尘颗粒直径对应的灰尘颗粒直径信息进行计算，可以得到每种灰尘颗粒直径对应的灰尘沉积速率。控制器根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径计算光伏电池板的灰尘的总质量，再将灰尘的总质量除以伏电池板的面积得到光伏电池板上的灰尘浓度。在得到光伏电池板上的灰尘浓度以后，控制器将其输入预设的能量转换效率模型中进行计算，可以得到光伏电池板的能量转换效率，然后可以根据能量转换效率确定光伏电池板的清洁频次。例如，可以设置一个能量转换效率阈值，当能量转换效率低于该阈值时，控制器可以确定需要对光伏电池板进行清洁。Specifically, dust particles suspended in the atmosphere and their movement by wind are the main causes of dust deposition on photovoltaic panels. After obtaining the wind speed information and dust particle diameter information of the environment where the photovoltaic panel is located, the controller inputs the wind speed information and dust particle diameter information into the preset dust accumulation rate model, and determines the dust particles corresponding to the wind speed information and each dust particle diameter. By calculating the diameter information, the dust deposition rate corresponding to each dust particle diameter can be obtained. The controller calculates the total mass of dust on the photovoltaic panel based on the dust deposition rate corresponding to each dust particle diameter and the diameter of each dust particle, and then divides the total mass of dust by the area of the photovoltaic panel to obtain the dust concentration on the photovoltaic panel. . After obtaining the dust concentration on the photovoltaic panel, the controller inputs it into the preset energy conversion efficiency model for calculation. The energy conversion efficiency of the photovoltaic panel can be obtained, and then the cleaning frequency of the photovoltaic panel can be determined based on the energy conversion efficiency. . For example, an energy conversion efficiency threshold can be set, and when the energy conversion efficiency is lower than the threshold, the controller can determine that the photovoltaic panel needs to be cleaned.
根据本发明的一个实施例，根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度，包括：根据每种灰尘颗粒直径对应的灰尘沉积速率和每种灰尘颗粒直径确定光伏电池板上的灰尘质量；根据光伏电池板上的灰尘质量和光伏电池板的面积确定光伏电池板上的灰尘浓度。According to an embodiment of the present invention, determining the dust concentration on the photovoltaic panel according to the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the area of the photovoltaic panel includes: according to the dust concentration corresponding to each dust particle diameter The dust deposition rate and the diameter of each dust particle determine the dust mass on the photovoltaic panel; the dust concentration on the photovoltaic panel is determined based on the dust mass on the photovoltaic panel and the area of the photovoltaic panel.
进一步地，根据本发明的一个实施例，根据以下公式确定光伏电池板上的灰尘浓度：Further, according to an embodiment of the present invention, the dust concentration on the photovoltaic panel is determined according to the following formula:
其中，C表示光伏电池板上的灰尘浓度，n表示灰尘颗粒的种类数量，ρ表示灰尘的密度，di表示第i种灰尘颗粒的直径，λi表示第i种颗粒直径的灰尘颗粒对应的积尘速率，Nk,i表示第i种颗粒直径的灰尘颗粒数量，T表示采样时间，A表示光伏电池板的面积，td表示粒子弛豫时间。其中，粒子弛豫时间是指灰尘颗粒在光伏电池板表面吸收光能后，释放出能量并恢复到稳定状态的时间，可通过实验模拟灰尘颗粒在光伏电池板表面的吸收光能和释放光能的过程，并使用光谱仪、荧光光谱仪等仪器来测量和分析灰尘颗粒光能的吸收和释放过程，从而获得灰尘颗粒的粒子弛豫时间。Among them, C represents the dust concentration on the photovoltaic panel, n represents the number of types of dust particles, ρ represents the density of dust, d i represents the diameter of the i-th dust particle, and λ i represents the dust particle corresponding to the i-th particle diameter. Dust accumulation rate, N k,i represents the number of dust particles with the i-th particle diameter, T represents the sampling time, A represents the area of the photovoltaic panel, and t d represents the particle relaxation time. Among them, particle relaxation time refers to the time for dust particles to release energy and return to a stable state after absorbing light energy on the surface of the photovoltaic panel. The absorption of light energy and release of light energy by dust particles on the surface of the photovoltaic panel can be simulated through experiments. process, and use spectrometers, fluorescence spectrometers and other instruments to measure and analyze the absorption and release process of light energy of dust particles, thereby obtaining the particle relaxation time of dust particles.
具体而言，灰尘是由许多不同粒径的灰尘颗粒组成的。实验人员可以在光伏电池板所处的同一区域安装材质、倾斜角相同的实验装置，使用专门的采样设备，从实验装置表面采集灰尘样本，然后使用粒度分析仪对采样的灰尘样本进行分析，获得每种灰尘颗粒的数量、大小、形状等信息，最后根据实验装置和光伏电池板的面积比，确定光伏电池板上每种灰尘颗粒的数量Nk,i。而相同环境下的灰尘颗粒的密度可以视为相同，均为ρ。光伏电池板上灰尘的质量m可以通过下述公式计算：Specifically, dust is composed of many dust particles of different sizes. Experimenters can install experimental devices with the same material and inclination angle in the same area where the photovoltaic panels are located, use special sampling equipment to collect dust samples from the surface of the experimental device, and then use a particle size analyzer to analyze the sampled dust samples to obtain The number, size, shape and other information of each dust particle are collected. Finally, based on the area ratio of the experimental device and the photovoltaic panel, the number N k,i of each dust particle on the photovoltaic panel is determined. The density of dust particles in the same environment can be regarded as the same, which is ρ. The mass m of dust on the photovoltaic panel can be calculated by the following formula:
其中，Vi表示第i种颗粒直径的体积。Among them, Vi represents the volume of the i-th particle diameter.
进一步地，假设灰尘颗粒是球形的，并且颗粒直径为di，根据每种灰尘颗粒直径对应的灰尘沉积速率和每种灰尘颗粒直径确定光伏电池板上的灰尘质量，灰尘积聚的总质量mt可以表示为：Further, assuming that the dust particles are spherical and the particle diameter is d i , the dust mass on the photovoltaic panel is determined according to the dust deposition rate corresponding to each dust particle diameter and the diameter of each dust particle, and the total mass of dust accumulation m t It can be expressed as:
光伏电池板上的灰尘浓度是每单位面积灰尘颗粒的总质量，光伏电池板的面积为A，将光伏电池板上的灰尘质量除以光伏电池板的面积可以得到光伏电池板上的灰尘浓度，灰尘浓度C可以表示为：The dust concentration on the photovoltaic panel is the total mass of dust particles per unit area. The area of the photovoltaic panel is A. The dust concentration on the photovoltaic panel can be obtained by dividing the dust mass on the photovoltaic panel by the area of the photovoltaic panel. Dust concentration C can be expressed as:
根据本发明的一个实施例，积尘速率模型根据以下公式进行表达：According to an embodiment of the present invention, the dust accumulation rate model is expressed according to the following formula:
其中，λi表示第i种颗粒直径的灰尘颗粒对应的积尘速率，v表示风速信息。Among them, λ i represents the dust accumulation rate corresponding to the i-th particle diameter dust particles, and v represents the wind speed information.
具体而言，悬浮在大气中的颗粒物及其通过风的运动是光伏电池板上灰尘沉积的主要原因，沉积速率最初随着灰尘颗粒直径的增加而增加，然后减小。通过分析颗粒直径、风速和沉积速率之间的关系，可以建立一个积尘速率模型。Specifically, particulate matter suspended in the atmosphere and its movement by wind is the main cause of dust deposition on photovoltaic panels, with the deposition rate initially increasing as the diameter of the dust particles increases and then decreasing. By analyzing the relationship between particle diameter, wind speed and deposition rate, a dust accumulation rate model can be established.
具体地，假设积尘速率的正态分布为：Specifically, assuming the normal distribution of dust accumulation rate is:
其中，λ表示灰尘沉积速率，B表示沉积速率的峰值系数，ω表示灰尘分散系数，d表示颗粒直径，dc表示颗粒直径的平均系数。Among them, λ represents the dust deposition rate, B represents the peak coefficient of the deposition rate, ω represents the dust dispersion coefficient, d represents the particle diameter, and d c represents the average coefficient of the particle diameter.
通过CFD(Computational Fluid Dynamics，计算流体动力学)模拟结果可以得到沉积速率和沉积系数，其中，第i种颗粒直径的灰尘积尘速率λi与风速之间的关系可以定义为：The deposition rate and deposition coefficient can be obtained through CFD (Computational Fluid Dynamics) simulation results. Among them, the relationship between the dust accumulation rate λ i of the i-th particle diameter and the wind speed can be defined as:
其中，192.31、50、45.27、37.75、38.46为沉积系数。Among them, 192.31, 50, 45.27, 37.75, and 38.46 are sedimentation coefficients.
将风速信息和第i种灰尘颗粒直径信息输入预设的积尘速率模型，可以获得每种灰尘颗粒直径对应的灰尘沉积速率λi。By inputting the wind speed information and the i-th dust particle diameter information into the preset dust accumulation rate model, the dust deposition rate λ i corresponding to each dust particle diameter can be obtained.
根据本发明的一个实施例，能量转换效率模型根据以下公式进行表达：According to an embodiment of the present invention, the energy conversion efficiency model is expressed according to the following formula:
其中，ηac表示光伏电池板的能量转换效率，ηclean表示光伏电池板在清洁条件下的参考转换效率，a表示积尘的影响系数。其中，积尘的影响系数是指灰尘积聚在光伏组件表面对光伏电池板性能的影响程度，通过安装光伏电池板监测系统，实时监测光伏电池板的输出功率和光照强度等参数，并对灰尘积聚的程度进行评估，从而计算出灰尘积聚的影响系数。Among them, eta ac represents the energy conversion efficiency of the photovoltaic panel, eta clean represents the reference conversion efficiency of the photovoltaic panel under clean conditions, and a represents the influence coefficient of dust accumulation. Among them, the influence coefficient of dust refers to the degree of impact of dust accumulation on the surface of photovoltaic modules on the performance of photovoltaic panels. By installing a photovoltaic panel monitoring system, the output power and light intensity of photovoltaic panels and other parameters can be monitored in real time, and the dust accumulation The degree of dust accumulation is evaluated to calculate the impact coefficient of dust accumulation.
进一步地，根据本发明的一个实施例，光伏电池板在清洁条件下的参考转换效率根据以下步骤确定：获取光伏电池板的输出电压和输出电流，并获取光伏电池板所处环境的辐照度；根据光伏电池板的输出电压和输出电流、辐照度和光伏电池板的面积确定参考转换效率。Further, according to an embodiment of the present invention, the reference conversion efficiency of the photovoltaic panel under clean conditions is determined according to the following steps: obtaining the output voltage and output current of the photovoltaic panel, and obtaining the irradiance of the environment where the photovoltaic panel is located ; Determine the reference conversion efficiency based on the output voltage and output current of the photovoltaic panel, the irradiance and the area of the photovoltaic panel.
进一步地，根据本发明的一个实施例，根据以下公式确定参考转换效率：Further, according to an embodiment of the present invention, the reference conversion efficiency is determined according to the following formula:
其中，U表示光伏电池板的输出电压，I表示光伏电池板的输出电流，G表示光伏电池板所处环境的辐照度。Among them, U represents the output voltage of the photovoltaic panel, I represents the output current of the photovoltaic panel, and G represents the irradiance of the environment where the photovoltaic panel is located.
具体而言，光伏电池板在安装完毕或清洁之后，控制器可以获取光伏电池板的输出电压U和输出电流I，并获取光伏电池板所处环境的辐照度G，将输出电压U、输出电流I、光伏电池板所处环境的辐照度G和光伏电池板的面积A代入上述公式(4)，可以得到光伏电池板在清洁条件下的能量转换效率，即参考转换效率ηclean。Specifically, after the photovoltaic panel is installed or cleaned, the controller can obtain the output voltage U and output current I of the photovoltaic panel, and obtain the irradiance G of the environment where the photovoltaic panel is located, and convert the output voltage U, output When the current I, the irradiance G of the environment where the photovoltaic panel is located, and the area A of the photovoltaic panel are substituted into the above formula (4), the energy conversion efficiency of the photovoltaic panel under clean conditions can be obtained, that is, the reference conversion efficiency η clean .
进一步地，光伏电池板的能量转换效率ηac和性能衰减率β之间的关系可以定义为：Further, the relationship between the energy conversion efficiency eta ac and the performance degradation rate β of the photovoltaic panel can be defined as:
因此，转换效率ηac可以描述为：ηac＝ηclean(1-β)。Therefore, the conversion efficiency eta ac can be described as: eta ac = eta clean (1-β).
其中，光伏电池板的性能衰减率β与灰尘浓度C之间的关系可以表达为：Among them, the relationship between the performance attenuation rate β of photovoltaic panels and the dust concentration C can be expressed as:
β(C)＝1-e-a·，将该式代入上式，并与上述公式(1)结合，可以得到：β(C)=1-e -a· , substitute this formula into the above formula, and combine it with the above formula (1), we can get:
得到的即为能量转换效率模型。将前述的相关参数代入该模型中，可以计算光伏电池板的能量转换效率，可以评估不同风速、粒径和采样周期对光伏电池板的能量转换效率的影响。当采样周期较短时，风速和颗粒直径对光伏电池板的能量转换效率的影响可以忽略不计，并且光伏板上的灰尘沉积量较小。在相同风速和相同粒径下，光伏电池板的能量转换效率随沉积时间的延长而降低。对于相同的沉积时间，光伏电池板的能量转换效率随着颗粒直径的增加而降低，然后增加。随着风速的增加，沉积了更多直径更大的灰尘颗粒，显著降低了光伏电池板的能量转换效率。当颗粒直径小于120mm时，低风速对光伏电池板的转换效率影响较大，光伏电池板的能量转换效率与沉积时间呈线性关系。在沉积时间为100天时，光伏电池板的最大能量转换效率为11.3％。The result is the energy conversion efficiency model. By substituting the aforementioned relevant parameters into the model, the energy conversion efficiency of photovoltaic panels can be calculated, and the impact of different wind speeds, particle sizes, and sampling periods on the energy conversion efficiency of photovoltaic panels can be evaluated. When the sampling period is short, the effects of wind speed and particle diameter on the energy conversion efficiency of the photovoltaic panels are negligible, and the amount of dust deposition on the photovoltaic panels is small. Under the same wind speed and the same particle size, the energy conversion efficiency of photovoltaic panels decreases with the extension of deposition time. For the same deposition time, the energy conversion efficiency of photovoltaic panels decreases and then increases with increasing particle diameter. As wind speed increases, more dust particles with larger diameters are deposited, significantly reducing the energy conversion efficiency of photovoltaic panels. When the particle diameter is less than 120mm, low wind speed has a greater impact on the conversion efficiency of photovoltaic panels, and the energy conversion efficiency of photovoltaic panels has a linear relationship with deposition time. When the deposition time is 100 days, the maximum energy conversion efficiency of the photovoltaic panel is 11.3%.
同时，随着颗粒直径的增加，在低风速下沉积的颗粒更少。在高风速下，转换效率较低的可能性更大，导致最大转换效率损失为72.9％。结果表明，该模型可用于估计灰尘积聚对能量转换效率的影响。因此，可以确定光伏电池板的清洁频率，从而实现智能光伏电站运行和维护。At the same time, as particle diameter increases, fewer particles are deposited at low wind speeds. At high wind speeds, lower conversion efficiency is more likely, resulting in a maximum conversion efficiency loss of 72.9%. The results show that the model can be used to estimate the impact of dust accumulation on energy conversion efficiency. Therefore, the cleaning frequency of photovoltaic panels can be determined, thereby enabling smart photovoltaic power station operation and maintenance.
综上所述，根据本发明实施例的光伏电池板的清洁检测方法，首先获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积；然后将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；再根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度；最后将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率，并根据能量转换效率确定光伏电池板的清洁频次。由此，该方法能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。To sum up, according to the cleaning detection method of photovoltaic panels according to the embodiment of the present invention, the wind speed information and dust particle diameter information of the environment where the photovoltaic panels are located are first obtained, and the area of the photovoltaic panels is obtained; and then the wind speed information and dust The particle diameter information is input into the preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; and then the photovoltaic power is determined based on the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the area of the photovoltaic panel. The dust concentration on the photovoltaic panel; finally, input the dust concentration on the photovoltaic panel into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel, and determine the cleaning frequency of the photovoltaic panel based on the energy conversion efficiency. As a result, this method can determine the cleaning frequency of photovoltaic panels based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the power loss caused by dust to the photovoltaic power station.
对应上述实施例，本发明还提出了一种计算机可读存储介质。Corresponding to the above embodiments, the present invention also provides a computer-readable storage medium.
本发明实施例的计算机可读存储介质，其上存储有光伏电池板的清洁检测程序，该清洁检测程序被处理器执行时实现上述的光伏电池板的清洁检测方法。The computer-readable storage medium according to the embodiment of the present invention stores a cleaning detection program for the photovoltaic panel. When the cleaning detection program is executed by the processor, the above-mentioned cleaning detection method for the photovoltaic panel is implemented.
根据本发明实施例的计算机可读存储介质，通过上述的光伏电池板的清洁检测方法，能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the computer-readable storage medium of the embodiment of the present invention, through the above-mentioned photovoltaic panel cleaning detection method, the cleaning frequency of the photovoltaic panel can be determined based on the dust particle diameter and wind speed to provide an effective cleaning cycle, thereby greatly reducing the cost of cleaning the photovoltaic panel. The power loss caused by dust to photovoltaic power stations.
对应上述实施例，本发明还提出了一种光伏电站。Corresponding to the above embodiments, the present invention also proposes a photovoltaic power station.
图2为根据本发明实施例的光伏电站的方框示意图。Figure 2 is a block diagram of a photovoltaic power station according to an embodiment of the present invention.
如图2所示，本发明实施例的光伏电站200，包括：存储器210、处理器220及存储在存储器210上并可在处理器220上运行的光伏电池板的清洁检测程序，处理器220执行清洁检测程序时，实现上述的光伏电池板的清洁检测方法。As shown in Figure 2, the photovoltaic power station 200 in the embodiment of the present invention includes: a memory 210, a processor 220, and a photovoltaic panel cleaning detection program stored in the memory 210 and runable on the processor 220. The processor 220 executes During the cleaning detection procedure, the above-mentioned cleaning detection method of photovoltaic panels is implemented.
根据本发明实施例的光伏电站，通过上述的光伏电池板的清洁检测方法，能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the photovoltaic power station according to the embodiment of the present invention, through the above-mentioned photovoltaic panel cleaning detection method, the cleaning frequency of the photovoltaic panel can be determined based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the impact of dust on photovoltaic panels. Power loss caused by power stations.
对应上述实施例，本发明还提出了一种光伏电池板的清洁检测装置。Corresponding to the above embodiments, the present invention also proposes a cleaning detection device for photovoltaic panels.
图3为根据本发明实施例的光伏电池板的清洁检测装置的方框示意图。Figure 3 is a block diagram of a photovoltaic panel cleaning detection device according to an embodiment of the present invention.
如图3所示，本发明实施例的光伏电池板的清洁检测装置100，可包括：获取模块110、积尘速率确定模块120、灰尘浓度确定模块130、转换效率确定模块140和清洁检测模块150。As shown in Figure 3, the photovoltaic panel cleaning detection device 100 according to the embodiment of the present invention may include: an acquisition module 110, a dust accumulation rate determination module 120, a dust concentration determination module 130, a conversion efficiency determination module 140 and a cleaning detection module 150 .
其中，获取模块110用于获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积。积尘速率确定模块120用于将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率。灰尘浓度确定模块130用于根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度。转换效率确定模块140用于将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率。清洁检测模块150用于根据能量转换效率确定光伏电池板的清洁频次。Among them, the acquisition module 110 is used to acquire wind speed information and dust particle diameter information of the environment where the photovoltaic panel is located, and obtain the area of the photovoltaic panel. The dust accumulation rate determination module 120 is used to input wind speed information and dust particle diameter information into a preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter. The dust concentration determination module 130 is used to determine the dust concentration on the photovoltaic panel according to the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the area of the photovoltaic panel. The conversion efficiency determination module 140 is used to input the dust concentration on the photovoltaic panel into a preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel. The cleaning detection module 150 is used to determine the cleaning frequency of the photovoltaic panel according to the energy conversion efficiency.
根据本发明的一个实施例，灰尘浓度确定模块130根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度，具体用于，根据每种灰尘颗粒直径对应的灰尘沉积速率和每种灰尘颗粒直径确定光伏电池板上的灰尘质量；根据光伏电池板上的灰尘质量和光伏电池板的面积确定光伏电池板上的灰尘浓度。According to one embodiment of the present invention, the dust concentration determination module 130 determines the dust concentration on the photovoltaic panel according to the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the area of the photovoltaic panel. Specifically, according to The dust deposition rate corresponding to each dust particle diameter and the diameter of each dust particle determine the dust quality on the photovoltaic panel; the dust concentration on the photovoltaic panel is determined based on the dust quality on the photovoltaic panel and the area of the photovoltaic panel.
根据本发明的一个实施例，灰尘浓度确定模块130根据以下公式确定光伏电池板上的灰尘浓度：According to one embodiment of the present invention, the dust concentration determination module 130 determines the dust concentration on the photovoltaic panel according to the following formula:
其中，C表示光伏电池板上的灰尘浓度，n表示灰尘颗粒的种类数量，ρ表示灰尘的密度，di表示第i种灰尘颗粒的直径，λi表示第i种颗粒直径的灰尘颗粒对应的积尘速率，Nk,i表示第i种颗粒直径的灰尘颗粒数量，T表示采样时间，A表示光伏电池板的面积，td表示粒子弛豫时间。Among them, C represents the dust concentration on the photovoltaic panel, n represents the number of types of dust particles, ρ represents the density of dust, d i represents the diameter of the i-th dust particle, and λ i represents the dust particle corresponding to the i-th particle diameter. Dust accumulation rate, N k,i represents the number of dust particles with the i-th particle diameter, T represents the sampling time, A represents the area of the photovoltaic panel, and t d represents the particle relaxation time.
根据本发明的一个实施例，积尘速率模型根据以下公式进行表达：According to an embodiment of the present invention, the dust accumulation rate model is expressed according to the following formula:
其中，λi表示第i种颗粒直径的灰尘颗粒对应的积尘速率，v表示风速信息。Among them, λ i represents the dust accumulation rate corresponding to the i-th particle diameter dust particles, and v represents the wind speed information.
根据本发明的一个实施例，能量转换效率模型根据以下公式进行表达：According to an embodiment of the present invention, the energy conversion efficiency model is expressed according to the following formula:
其中，ηac表示光伏电池板的能量转换效率，ηclean表示光伏电池板在清洁条件下的参考转换效率，a表示积尘影响系数。Among them, eta ac represents the energy conversion efficiency of the photovoltaic panel, eta clean represents the reference conversion efficiency of the photovoltaic panel under clean conditions, and a represents the dust impact coefficient.
根据本发明的一个实施例，光伏电池板在清洁条件下的参考转换效率，转换效率确定模块140根据以下步骤确定：获取光伏电池板的输出电压和输出电流，并获取光伏电池板所处环境的辐照度；根据光伏电池板的输出电压和输出电流、辐照度和光伏电池板的面积确定参考转换效率。According to one embodiment of the present invention, the reference conversion efficiency of the photovoltaic panel under clean conditions is determined by the conversion efficiency determination module 140 according to the following steps: obtaining the output voltage and output current of the photovoltaic panel, and obtaining the environment of the photovoltaic panel. Irradiance; determine the reference conversion efficiency based on the output voltage and output current of the photovoltaic panel, the irradiance and the area of the photovoltaic panel.
根据本发明的一个实施例，转换效率确定模块140根据以下公式确定参考转换效率：According to one embodiment of the present invention, the conversion efficiency determination module 140 determines the reference conversion efficiency according to the following formula:
其中，U表示光伏电池板的输出电压，I表示光伏电池板的输出电流，G表示光伏电池板所处环境的辐照度。Among them, U represents the output voltage of the photovoltaic panel, I represents the output current of the photovoltaic panel, and G represents the irradiance of the environment where the photovoltaic panel is located.
需要说明的是，本发明实施例的光伏电池板的清洁检测装置中未披露的细节，请参照本发明实施例的光伏电池板的清洁检测方法中所披露的细节，具体这里不再赘述。It should be noted that, for details not disclosed in the cleaning detection device of the photovoltaic panel according to the embodiment of the present invention, please refer to the details disclosed in the cleaning detection method of the photovoltaic panel according to the embodiment of the present invention, which will not be described again here.
根据本发明实施例的光伏电池板的清洁检测装置，获取模块获取光伏电池板所处环境的风速信息和灰尘颗粒直径信息，并获取光伏电池板的面积；积尘速率确定模块将风速信息和灰尘颗粒直径信息输入预设的积尘速率模型，获得每种灰尘颗粒直径对应的灰尘沉积速率；灰尘浓度确定模块根据每种灰尘颗粒直径对应的灰尘沉积速率、每种灰尘颗粒直径以及光伏电池板的面积确定光伏电池板上的灰尘浓度；转换效率确定模块将光伏电池板上的灰尘浓度输入预设的能量转换效率模型，获得光伏电池板的能量转换效率；清洁检测模块根据能量转换效率确定光伏电池板的清洁频次。由此，该装置能够根据灰尘颗粒直径和风速确定光伏电池板的清洁频次，以提供有效的清洗周期，从而大大降低了因为灰尘对光伏电站造成的电量损失。According to the photovoltaic panel cleaning detection device according to the embodiment of the present invention, the acquisition module obtains the wind speed information and dust particle diameter information of the environment where the photovoltaic panel is located, and obtains the area of the photovoltaic panel; the dust accumulation rate determination module combines the wind speed information and dust The particle diameter information is input into the preset dust accumulation rate model to obtain the dust deposition rate corresponding to each dust particle diameter; the dust concentration determination module is based on the dust deposition rate corresponding to each dust particle diameter, the diameter of each dust particle, and the size of the photovoltaic panel. The area determines the dust concentration on the photovoltaic panel; the conversion efficiency determination module inputs the dust concentration on the photovoltaic panel into the preset energy conversion efficiency model to obtain the energy conversion efficiency of the photovoltaic panel; the cleaning detection module determines the photovoltaic cell based on the energy conversion efficiency How often the board is cleaned. As a result, the device can determine the cleaning frequency of photovoltaic panels based on the diameter of dust particles and wind speed to provide an effective cleaning cycle, thereby greatly reducing the power loss caused by dust to the photovoltaic power station.
需要说明的是，在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered to be a sequenced list of executable instructions for implementing logical functions, which may be embodied in any computer. in a readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can retrieve and execute instructions from the instruction execution system, apparatus, or device) Used by instruction execution systems, devices or equipment. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, and subsequently edited, interpreted, or otherwise suitable as necessary. process to obtain the program electronically and then store it in computer memory.
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。It should be understood that various parts of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented in hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a logic gate circuit with a logic gate circuit for implementing a logic function on a data signal. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and should not be construed as limitations of the present invention. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present invention. The embodiments are subject to changes, modifications, substitutions and variations.
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