Total radiation data correction method and system based on photovoltaic power generation historical information

A technology of historical data and photovoltaic power generation, applied in information technology support systems, data processing applications, neural learning methods, etc., can solve problems such as data missing of total radiation sequence data, and achieve the effect of solving missing data

Pending Publication Date: 2022-05-27
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0003] In order to solve the problem of missing data in total radiation sequence data existing in photovoltaic power stations in the prior art and in total radiation monitoring, the present invention provides a method for correcting total radiation data based on historical information of photovoltaic power generation, including:

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  • Total radiation data correction method and system based on photovoltaic power generation historical information
  • Total radiation data correction method and system based on photovoltaic power generation historical information

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Effect test

Embodiment 1

[0048] A correction method of total radiation data based on historical information of photovoltaic power generation, such as figure 1 Shown include:

[0049] Step 1: Divide the historical data of the photovoltaic power station into data to be corrected and historical data not missing;

[0050] Step 2: Bring the power data in the data to be corrected into the pre-trained optimization model to obtain the total radiation data corresponding to the power data to be corrected;

[0051] Step 3: Fitting the total radiation data in the unmissed historical data and the total radiation data corresponding to the power data to be corrected to obtain the total radiation data;

[0052] Wherein, the historical data of the photovoltaic power station includes power data and total radiation data, and the optimization model is obtained by training samples constructed with no missing historical data.

[0053] The specific steps of the total radiation data correction method based on the historica...

Embodiment 2

[0069] Based on the same inventive concept, the present invention also provides a total radiation data ordering system based on historical information of photovoltaic power generation, including:

[0070] Data extraction module, data correction module, data fitting module and model building module;

[0071] The data extraction module divides the historical data of the photovoltaic power station into data to be corrected and historical data not missing;

[0072] The data correction module brings the power data in the data to be corrected into the pre-trained optimization model to obtain the total radiation data corresponding to the power data to be corrected;

[0073] The data fitting module fits the total radiation data in the unmissed historical data and the total radiation data corresponding to the power data to be corrected to obtain the total radiation data;

[0074] The model construction module, the optimized model is obtained by training samples constructed with no mis...

Embodiment 3

[0087] The present invention proposes a method for correcting total radiation data based on historical information of photovoltaic power generation. By using the RBF neural network method, a mapping model between power data and total radiation data is established to correct the data to be corrected in the total radiation sequence. In order to provide complete total radiation sequence data for photovoltaic power plants and solve the problem of missing data in total radiation monitoring, such as figure 2 As shown, the method proceeds in the following steps:

[0088] 1. According to the 15-minute monitoring data of historical photovoltaic power plants, select the data marked as pending correction in the total radiation data, and eliminate the data corresponding to the total radiation pending correction data mark; the power data is processed in the same way according to the total radiation situation.

[0089] 2. Randomly take 75% of the total power data after elimination as the t...

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Abstract

The invention provides a total radiation data correction method based on photovoltaic power generation historical information. The method comprises the following steps: dividing photovoltaic power station historical data into to-be-corrected data and non-missing historical data; substituting power data in the to-be-corrected data into a pre-trained optimization model to obtain total radiation data corresponding to the to-be-corrected power data; fitting the total radiation data in the non-missing historical data and the total radiation data corresponding to the to-be-corrected power data to obtain total radiation data; wherein the historical data of the photovoltaic power station comprises power data and total radiation data, and the optimization model is obtained by training a sample constructed by non-missing historical data. Complete total radiation sequence data is provided for a photovoltaic power station, and the problem of data missing in total radiation monitoring is solved.

Description

technical field [0001] The invention relates to the field of new energy technology, in particular to a method and system for correcting total radiation data based on historical information of photovoltaic power generation. Background technique [0002] Electric power is an important basic industry and public utility related to the national economy and people's livelihood, and its position in the economy, society and people's life is becoming more and more important. The access of large-scale photovoltaic power generation is one of the important ways to innovate the current grid form. With the rapid development of photovoltaics, a large amount of photovoltaic monitoring data has been accumulated. How these data support dispatching and operation business is particularly urgent. At the same time, photovoltaic monitoring data is the basis of core businesses such as current forecasting and consumption. Higher total radiation data quality can improve the utilization of photovoltai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/17G06N3/08G06Q50/06
CPCG06F17/17G06N3/08G06Q50/06Y04S10/50
Inventor 丁煌梁志峰单瑞卿柴旭峥秦放陈卫东李登宣吴骥牛继涛李朝晖
Owner CHINA ELECTRIC POWER RES INST
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