Photovoltaic power generation power prediction method based on similar day theory and PCA-PSO-BP
A PCA-PSO-BP, photovoltaic power generation technology, applied in forecasting, neural learning methods, data processing applications, etc., can solve problems such as long forecasting time, and achieve a reduction in the number of calculations, short power generation time, and high forecasting accuracy. Effect
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[0033] The present invention will be further described below in combination with specific embodiments.
[0034] A photovoltaic power prediction method based on similar day theory and PCA-PSO-BP:
[0035] S1. Establish a photovoltaic power generation prediction model based on PCA-PSO-BP;
[0036] S2. Based on the similar day theory, use the gray relational degree method to select the similar day of the forecast day;
[0037] Radiation information, temperature information and humidity information are selected as the factors affecting the output of the optical field. Since these information are all factors affecting the output of photovoltaic power generation, it can roughly determine the output of photovoltaic power generation throughout the day. Search the historical data of the same season and the same weather as the forecast day to find similar days.
[0038] Based on the above analysis, the meteorological feature vector is constructed, that is, Y i =[I hi , I li , I a...
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