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A Method for Improving the Accuracy of Photovoltaic Short-term Power Prediction Based on Wind Speed ​​Forecast

A power forecasting and wind speed technology, which is applied in the field of improving short-term photovoltaic power forecasting accuracy based on wind speed forecasting, and can solve problems affecting the ambient temperature of photovoltaic power station bureaus, photovoltaic module temperature, etc.

Active Publication Date: 2021-08-27
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

[0006] In order to solve the above problems that the influence of wind on the power generation efficiency of the photovoltaic power station is ignored, and the size of the wind speed directly affects the turbulence of the photovoltaic power station bureau, thereby affecting the ambient temperature of the photovoltaic power station bureau and the temperature of the photovoltaic modules, the present invention provides a method for different regions. Photovoltaic short-term power forecasting has a good adaptability, a method based on wind speed forecasting to improve the accuracy of photovoltaic short-term power forecasting

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  • A Method for Improving the Accuracy of Photovoltaic Short-term Power Prediction Based on Wind Speed ​​Forecast
  • A Method for Improving the Accuracy of Photovoltaic Short-term Power Prediction Based on Wind Speed ​​Forecast
  • A Method for Improving the Accuracy of Photovoltaic Short-term Power Prediction Based on Wind Speed ​​Forecast

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Embodiment Construction

[0043] like figure 1The algorithm flow chart of a method for improving short-term photovoltaic power prediction accuracy based on wind speed forecast is shown, using the WRF (Weather Research Forecast) numerical model to design a parameterized scheme with regional adaptability, based on NCEP (National Centers for Environmental Prediction) The provided GFS (Global File System) data is used as the initial field and boundary conditions of the WRF model, combined with the localized meteorological observation data of the photovoltaic power station, and adopts the three-dimensional data assimilation method, with 8:00 and 20:00 as the starting point of forecasting respectively, and the production output resolution The rate is 3km×3km, the time interval is 5 minutes, and the total radiation and wind speed data near the ground are predicted for 72 hours; Correct the number, misacquisition, misreporting, etc.

[0044] Correct the measured power data. Process the measured power data to...

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Abstract

The invention discloses a method for improving the prediction accuracy of photovoltaic short-term power based on wind speed forecast, which includes at least a power station, and also includes the following steps: Step 1: produce forecast data through WRF numerical model; Step 2: compile measured power, measured meteorological data and forecast Meteorological data; Step 3: Determine the power conversion relationship; Step 4: Model verification and retraining judgment, providing a kind of specific and good adaptability to the short-term power prediction of photovoltaics in different regions method for predicting accuracy.

Description

technical field [0001] The invention relates to the technical field of photovoltaic short-term power forecasting, in particular to a method for improving the precision of photovoltaic short-term power forecasting based on wind speed forecasting. Background technique [0002] With the rapid development of the economy, the problems of global energy security and environmental pollution have become increasingly prominent, and the development and utilization of renewable energy has increasingly become the focus. my country is rich in solar energy resources and has a large theoretical reserve. Photovoltaic power generation has developed rapidly due to its outstanding advantages such as cleanliness, safety, and simplicity. Therefore, the accurate prediction of the output power of photovoltaic power plants can provide important decision support for power dispatching, effectively reduce the operating cost of the power system, make full use of photovoltaic resources, and obtain greate...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 方江晓张静炜严耀良金山红李登宣朱想周海赵巍杨晓雷屠一艳崔方程序王知嘉丁煌陈卫东吴骥周强
Owner STATE GRID CORP OF CHINA