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Photovoltaic power generation short-term power prediction method based on linear prediction method

A technology for photovoltaic power generation and power prediction, which is applied in the fields of prediction, instrumentation, and data processing applications. It can solve problems such as low calculation efficiency, large amount of calculation, and inability to meet real-time training of models, so as to improve the efficiency of parameter estimation and solve the problem of large amount of calculation. Effect

Pending Publication Date: 2022-01-11
汉谷云智(武汉)科技有限公司
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Problems solved by technology

[0003] In order to solve the deficiencies of the existing technology, the purpose of the present invention is to solve the problems of large amount of calculation, low calculation efficiency, and inability to meet the real-time training of the model when the full amount of data is used to estimate the parameters of the linear model of photovoltaic short-term power output

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  • Photovoltaic power generation short-term power prediction method based on linear prediction method
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  • Photovoltaic power generation short-term power prediction method based on linear prediction method

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[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0054] The present invention relates to a short-term power prediction method of photovoltaic power generation based on a linear estimation method, comprising the following steps:

[0055] Step 1. Establish a linear model of the photovoltaic panel output; the photovoltaic panel output model refers to the functional relationship expression between the instantaneous value of the active power of the photovoltaic panel and the instantaneous value of the power ...

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Abstract

The invention discloses a photovoltaic power generation short-term power prediction method based on a linear prediction method. The method comprises the following steps: establishing a photovoltaic panel output linear model; expanding the photovoltaic panel output linear model to t samples from the moment 1 to the moment t; based on a least square criterion, obtaining a parameter estimation calculation formula when parameter estimation is carried out on the photovoltaic short-term power output linear model based on the total data; establishing a recursive prediction model of a parameter estimation value of a linear model only by using the power influence factor instantaneous observation data and the active power instantaneous observation value at the previous moment; carrying out recursive estimation on the parameter estimation value of the linear model only by using the power influence factor instantaneous observation data and the active power instantaneous observation value at the previous moment, so that the problems of large operand, low calculation efficiency and the like caused by parameter estimation based on total data are effectively solved, and the method has the advantages of real-time parameter estimation and online estimation.

Description

technical field [0001] The invention relates to a short-term power prediction method for power generation, in particular to a short-term power prediction method for photovoltaic power generation based on a linear prediction method. Background technique [0002] When using the full amount of data to estimate the parameters of the short-term power output linear model of photovoltaic power generation, the linear prediction method and the full amount of historical data are used to estimate. As time goes by, the sample size of historical data from time t1 to time tn increases continuously, resulting in more In the future, the greater the amount of calculation, the lower and lower the efficiency of model training. Contents of the invention [0003] In order to solve the deficiencies of the existing technology, the purpose of the present invention is to solve the problems of large amount of calculation, low calculation efficiency and inability to meet the real-time training of th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 周力张凡刘军薛菲鄢烈祥陈超
Owner 汉谷云智(武汉)科技有限公司
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