Optimal Energy Storage Scheduling for Wind Curtailment Reduction and Energy Arbitrage: A Deep Reinforcement Learning Approach

• URL: http://arxiv.org/abs/2304.02239v1
• Date: Wed, 5 Apr 2023 06:02:58 GMT
• Title: Optimal Energy Storage Scheduling for Wind Curtailment Reduction and Energy Arbitrage: A Deep Reinforcement Learning Approach
• Authors: Jinhao Li, Changlong Wang, Hao Wang
• Abstract summary: variable nature of wind generation can undermine system reliability and lead to wind curtailment. Battery energy storage systems (BESS) that serve as onsite backup sources are among the solutions to mitigate wind curtailment. This paper proposes joint wind curtailment reduction and energy arbitrage for the BESS.
• Score: 3.9430294028981763
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Wind energy has been rapidly gaining popularity as a means for combating climate change. However, the variable nature of wind generation can undermine system reliability and lead to wind curtailment, causing substantial economic losses to wind power producers. Battery energy storage systems (BESS) that serve as onsite backup sources are among the solutions to mitigate wind curtailment. However, such an auxiliary role of the BESS might severely weaken its economic viability. This paper addresses the issue by proposing joint wind curtailment reduction and energy arbitrage for the BESS. We decouple the market participation of the co-located wind-battery system and develop a joint-bidding framework for the wind farm and BESS. It is challenging to optimize the joint-bidding because of the stochasticity of energy prices and wind generation. Therefore, we leverage deep reinforcement learning to maximize the overall revenue from the spot market while unlocking the BESS's potential in concurrently reducing wind curtailment and conducting energy arbitrage. We validate the proposed strategy using realistic wind farm data and demonstrate that our joint-bidding strategy responds better to wind curtailment and generates higher revenues than the optimization-based benchmark. Our simulations also reveal that the extra wind generation used to be curtailed can be an effective power source to charge the BESS, resulting in additional financial returns.

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