An Improved Yaw Control Algorithm for Wind Turbines via Reinforcement Learning

• URL: http://arxiv.org/abs/2305.01299v1
• Date: Tue, 2 May 2023 10:01:39 GMT
• Title: An Improved Yaw Control Algorithm for Wind Turbines via Reinforcement Learning
• Authors: Alban Puech, Jesse Read
• Abstract summary: Yaw misalignment has consequences on the power output, the safety and the lifetime of the turbine and its wind park as a whole. We use reinforcement learning to develop a yaw control agent to minimise yaw misalignment and optimally reallocate yaw resources.
• Score: 1.5076964620370268
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Yaw misalignment, measured as the difference between the wind direction and the nacelle position of a wind turbine, has consequences on the power output, the safety and the lifetime of the turbine and its wind park as a whole. We use reinforcement learning to develop a yaw control agent to minimise yaw misalignment and optimally reallocate yaw resources, prioritising high-speed segments, while keeping yaw usage low. To achieve this, we carefully crafted and tested the reward metric to trade-off yaw usage versus yaw alignment (as proportional to power production), and created a novel simulator (environment) based on real-world wind logs obtained from a REpower MM82 2MW turbine. The resulting algorithm decreased the yaw misalignment by 5.5% and 11.2% on two simulations of 2.7 hours each, compared to the conventional active yaw control algorithm. The average net energy gain obtained was 0.31% and 0.33% respectively, compared to the traditional yaw control algorithm. On a single 2MW turbine, this amounts to a 1.5k-2.5k euros annual gain, which sums up to very significant profits over an entire wind park.

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