Method and device for prediction of radiation received by photovoltaic power station

Abstract

The present invention discloses a method and device for prediction of radiation received by a photovoltaic power station. The method for prediction of radiation received by the photovoltaic power station comprises: obtaining the water content of an echo monomer; calculating cloud height and cloud thickness data with respect to a cloud cluster monomer in a scanning area according to the spatial distribution of the water content of the echo monomer; calculating the motion vector of the cloud cluster monomer according to the monomer echo intensity data scanned by a radar; determining whether the cloud cluster monomer may shield the photovoltaic power station in a preset time according to the motion vector of the cloud cluster monomer; and predicting the radiation received by the photovoltaic power station under the shield of the cloud cluster monomer according to actual measurement monitoring data, weather type theory radiation data, the water content of the echo monomer and the cloud height and cloud thickness data of the photovoltaic power station when determining the cloud cluster monomer may shield the photovoltaic power station. According to the invention, the radiation attenuation relation caused by shield of different clouds may be accurately calculated, and the prediction accuracy of the photovoltaic power may be improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power prediction, in particular to a method and device for predicting radiation received by a photovoltaic power station. Background technique [0002] Due to the randomness and volatility of the output power of photovoltaic power generation, the connection of large-scale photovoltaic power plants to the grid in recent years has had an impact on the security, stability and economic operation of the grid. Accurate prediction of the output power of photovoltaic power plants can provide important decision-making support for power dispatching, and help power dispatching departments to adjust dispatching plans in advance according to changes in photovoltaic power generation, ensure power quality, reduce system reserve capacity, and reduce power system costs. Operating costs, so that photovoltaic resources can be fully utilized, so as to obtain greater economic and social benefits. [0003] Howeve...

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Problems solved by technology

[0004] Although some literatures on photovoltaic power prediction at home and abroad have proposed some cloud occlusion radiation attenuation methods, they only roughly classify the relationship between clouds and radiation, without detailed calculation and processing of data such as cloud height and cloud thickness, and the algorithm The actual application effect is not very good, not universal

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