Photovoltaic power station output data repairing method based on weather information

A photovoltaic power station, weather information technology, applied in data processing applications, neural learning methods, information technology support systems, etc., can solve the problems that data cannot be directly applied, do not have weather stations, and weather data is difficult to obtain, etc., to improve decision-making accuracy. , the effect of improving economy and improving the level of decision-making

Inactive Publication Date: 2017-04-19
WIND POWER TECH CENT OF GANSU ELECTRIC POWER +4
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  • Abstract
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Problems solved by technology

[0005] However, the meteorological data of general photovoltaic power plants is more difficult to obtain than the output data of photovoltaic power plants. The reason is that the general photovoltaic power station is not equipped with a weather station

Method used

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  • Photovoltaic power station output data repairing method based on weather information
  • Photovoltaic power station output data repairing method based on weather information
  • Photovoltaic power station output data repairing method based on weather information

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Embodiment Construction

[0029] In order to clearly understand the technical solution of the present invention, its detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the invention is not limited to specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, and there may be other implementations besides those described in detail.

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0031] refer to figure 1 , the overall flow chart of a method for repairing output data of photovoltaic power plants based on weather information in the present invention, including the main steps of screening and classification of abnormal data, feature extraction of weather information and photovoltaic output parameters, and repair of abnormal data groups, specifically:

[0032] 1) Screen out ...

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Abstract

The invention discloses a photovoltaic power station output data repairing method based on weather information. The method comprises the following steps: repeated, missing and unreasonable abnormal data in data are obtained through screening, and according to the length of a continuous time sequence corresponding to the abnormal data, a continuous abnormal type and a local abnormal type are divided; the correlation between the selected weather information data items and the normal photovoltaic power station output data is checked item by item, and uncorrelated data items are removed; the known weather information, a cloud covering factor at the photovoltaic power station and the temperature are used for training a BP neural network model, and all parameters of the BP neural network model are obtained; as for the local abnormal data, an interpolation method is adopted to obtain repaired photovoltaic power station output data; as for the continuous abnormal type data, the weather information at the corresponding time is used to obtain the temperature and the cloud covering factor data; and the effectiveness of the repaired data is checked, and a repairing report is outputted. By using the open and free weather information, the photovoltaic power station output data are repaired.

Description

technical field [0001] The invention belongs to the field of restoring output data of new energy power stations, and in particular relates to a method for restoring output data of photovoltaic power stations based on weather information. Background technique [0002] Because solar energy is widely distributed, clean, and pollution-free, solar power generation, especially photovoltaic power generation, has developed rapidly around the world. However, due to the randomness, volatility and intermittent characteristics of solar energy, the large-scale connection of photovoltaic power stations will have a huge impact on the power system. The output characteristics of photovoltaic power plants provide an important decision-making basis for the scheduling of power grid operations; however, photovoltaic power plants generally occupy a large area, are relatively remote, and have poor communication conditions. The real-time communication between the detection data and the data center ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06G06N3/04G06N3/08
CPCG06N3/04G06N3/084G06Q10/04G06Q50/06Y04S10/50
Inventor 汪宁渤丁坤别朝红李津谢海鹏周识远刘诗雨吕清泉
Owner WIND POWER TECH CENT OF GANSU ELECTRIC POWER
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