Adaptive Probabilistic Forecasting of Electricity (Net-)Load

• URL: http://arxiv.org/abs/2301.10090v2
• Date: Mon, 24 Apr 2023 12:33:30 GMT
• Title: Adaptive Probabilistic Forecasting of Electricity (Net-)Load
• Authors: Joseph de Vilmarest, Jethro Browell, Matteo Fasiolo, Yannig Goude (EDF R\&D), Olivier Wintenberger (SU)
• Abstract summary: Electricity load forecasting is a necessary capability for power system operators and electricity market participants. The proliferation of local generation, demand response, and electrification of heat and transport are changing the fundamental drivers of electricity load. We consider probabilistic rather than point forecasting; indeed, uncertainty is required to operate electricity systems efficiently and reliably.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Electricity load forecasting is a necessary capability for power system operators and electricity market participants. The proliferation of local generation, demand response, and electrification of heat and transport are changing the fundamental drivers of electricity load and increasing the complexity of load modelling and forecasting. We address this challenge in two ways. First, our setting is adaptive; our models take into account the most recent observations available, yielding a forecasting strategy able to automatically respond to changes in the underlying process. Second, we consider probabilistic rather than point forecasting; indeed, uncertainty quantification is required to operate electricity systems efficiently and reliably. Our methodology relies on the Kalman filter, previously used successfully for adaptive point load forecasting. The probabilistic forecasts are obtained by quantile regressions on the residuals of the point forecasting model. We achieve adaptive quantile regressions using the online gradient descent; we avoid the choice of the gradient step size considering multiple learning rates and aggregation of experts. We apply the method to two data sets: the regional net-load in Great Britain and the demand of seven large cities in the United States. Adaptive procedures improve forecast performance substantially in both use cases for both point and probabilistic forecasting.

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