Method for calculating quantitative influence of haze on photovoltaic power generation
A power generation and photovoltaic technology, which is applied in the field of calculating the quantitative impact of smog on photovoltaic power generation, and can solve problems such as the rough photoelectric conversion efficiency of solar radiation and photovoltaic power generation, and the error of analysis results
Active Publication Date: 2020-06-09
HANGZHOU DIANZI UNIV
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[0004] Existing studies have made some progress in the influence of air pollution on solar radiation, but most studies only discuss the relationship between haze concentration and irradiance from a qualitative point of view, while quantitatively analyzing the relationship between haze concentration and ground solar radiation Less, the conversion of solar radiation and photovoltaic power generation is mostly a rough photoelectric conversion efficiency, resulting in large errors in the analysis results
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[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0050] Such as figure 1 Shown, the concrete steps of the inventive method are as follows:
[0051] Step 1. Collect meteorological data, air quality data, and photovoltaic power generation data, conduct data rationality and integrity checks, complete data filtering, data seasonal normalization, and establish a clear sky database.
[0052] Remove data other than sunny days by establishing a data filter, because rainy days and other bad weather will have a huge impact on photovoltaic power generation, which will cause large errors in subsequent analysis. Data clear sky filtering is as follows: figure 2 shown. The data is seasonally normalized as image 3 , Data seasonal normalization uses maximum-minimum normalization to perform a linear change on the data, which can maintain the connection between the original data, so that the data will not produce m...
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The invention provides a method for calculating the quantitative influence of haze on photovoltaic power generation. The method comprises the following steps: firstly, collecting meteorological data,air quality data and photovoltaic power generation data, completing data filtering and data season normalization, and establishing a clear sky database; analyzing the correlation degree between each influence factor in the photovoltaic power generation system and the photovoltaic power generation capacity by adopting an improved grey correlation degree; and according to correlation analysis, establishing an exponential linear composite relation model of haze and irradiance to obtain the quantitative influence of haze on irradiance. A simulink photovoltaic power generation system model is established according to an existing photovoltaic power generation system, the photovoltaic power generation capacity corresponding to the haze-free condition is obtained, and the quantitative influence ofhaze on the photovoltaic power generation capacity is obtained. The method provided by the invention can quantitatively describe the influence of haze on the photovoltaic power generation capacity, is of great significance to the economic evaluation of a newly-built photovoltaic system and the prediction and scheduling of the power generation capacity of an in-service photovoltaic system, provides decision reference for the application and development of new energy, and contributes to the improvement of air quality.
Description
technical field [0001] The invention belongs to the field of photovoltaic power generation, and relates to the quantitative analysis of smog (PM2.5) in the weather to reduce direct radiation and increase scattered radiation to reduce solar irradiance. Based on the improved gray slope correlation degree analysis of various influencing factors and photovoltaic power generation power The impact weight of PM2.5 is used to create an exponential linear composite model, which specifically involves a method for quantitatively analyzing the loss of photovoltaic power generation caused by PM2.5. Background technique [0002] Smog is a very common air pollution phenomenon with a large scope of pollution. Since 2013, many areas of my country have frequently erupted in winter. After several years of governance and the development of clean energy such as solar energy, China's The smog problem has been significantly improved; however, compared with other developed countries, China's air pol...
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IPC IPC(8): G06F17/18G06Q10/06G06Q50/06
CPCG06F17/18G06Q10/06393G06Q50/06Y04S10/50
Inventor 吴秋轩蒋咏梅迟晓妮石厅罗艳斌曾平良
Owner HANGZHOU DIANZI UNIV