Improving Sequential Market Clearing via Value-oriented Renewable Energy Forecasting

• URL: http://arxiv.org/abs/2405.09004v1
• Date: Wed, 15 May 2024 00:04:08 GMT
• Title: Improving Sequential Market Clearing via Value-oriented Renewable Energy Forecasting
• Authors: Yufan Zhang, Honglin Wen, Yuexin Bian, Yuanyuan Shi,
• Abstract summary: Large penetration of renewable energy sources (RESs) brings huge uncertainty into the electricity markets. We propose a value-oriented forecasting approach, which tactically determines the RESs generation that enters the day-ahead market.
• Score: 3.0665531066360066
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large penetration of renewable energy sources (RESs) brings huge uncertainty into the electricity markets. While existing deterministic market clearing fails to accommodate the uncertainty, the recently proposed stochastic market clearing struggles to achieve desirable market properties. In this work, we propose a value-oriented forecasting approach, which tactically determines the RESs generation that enters the day-ahead market. With such a forecast, the existing deterministic market clearing framework can be maintained, and the day-ahead and real-time overall operation cost is reduced. At the training phase, the forecast model parameters are estimated to minimize expected day-ahead and real-time overall operation costs, instead of minimizing forecast errors in a statistical sense. Theoretically, we derive the exact form of the loss function for training the forecast model that aligns with such a goal. For market clearing modeled by linear programs, this loss function is a piecewise linear function. Additionally, we derive the analytical gradient of the loss function with respect to the forecast, which inspires an efficient training strategy. A numerical study shows our forecasts can bring significant benefits of the overall cost reduction to deterministic market clearing, compared to quality-oriented forecasting approach.

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