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arXiv 2203.07080cs.LGphysics.data-an
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利用深度学习方法对复杂地形地区风力发电的概率预测:北极案例

Probabilistic forecasts of wind power generation in regions with complex topography using deep learning methods: An Arctic case

UiT-the Arctic University of Norway(特罗姆瑟大学-挪威北极圈大学);Ishavskraft Power Company(伊沙夫斯克拉夫特电力公司)

Odin Foldvik Eikeland, Finn Dag Hovem, Tom Eirik Olsen, Matteo Chiesa, Filippo Maria Bianchi

摘要:

能源市场依赖于需求和发电量的预测能力,需要保持动态平衡。今天,在可再生能源发电方面,这种决定越来越多地在自由化的电力市场环境中作出,未来的发电必须通过合同和拍卖机制提供,因此必须以预测为基础。可再生能源高度间歇性发电的比例增加,增加了预期未来发电量的不确定性。点预测不考虑这种不确定性。为了解释这些不确定性,可以进行概率预测。这项工作首先提出了关于概率预测与深度学习的重要概念和方法。然后,使用深度学习模型对位于挪威北部的风力发电厂的前一天发电量进行概率预测。针对不同的深度学习模型和协变量集合,比较了在所获得的预测区间的质量方面的性能。研究结果表明,提高了预测的准确性时,测量天气和数值天气预报(NWP)的历史数据作为外生变量。这允许模型使用历史测量数据自动校正NWP中的系统偏差。仅使用NWP,或仅测量天气作为外生变量,得到更差的预测性能。

英文摘要:

The energy market relies on forecasting capabilities of both demand and power generation that need to be kept in dynamic balance. Today, when it comes to renewable energy generation, such decisions are increasingly made in a liberalized electricity market environment, where future power generation must be offered through contracts and auction mechanisms, hence based on forecasts. The increased share of highly intermittent power generation from renewable energy sources increases the uncertainty about the expected future power generation. Point forecast does not account for such uncertainties. To account for these uncertainties, it is possible to make probabilistic forecasts. This work first presents important concepts and approaches concerning probabilistic forecasts with deep learning. Then, deep learning models are used to make probabilistic forecasts of day-ahead power generation from a wind power plant located in Northern Norway. The performance in terms of obtained quality of the prediction intervals is compared for different deep learning models and sets of covariates. The findings show that the accuracy of the predictions improves when historical data on measured weather and numerical weather predictions (NWPs) were included as exogenous variables. This allows the model to auto-correct systematic biases in the NWPs using the historical measurement data. Using only NWPs, or only measured weather as exogenous variables, worse prediction performances were obtained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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