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arXiv 2411.04467eess.SYcs.SY
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基于Koopman算子描述系统模型的频率安全分布鲁棒控制策略

A Distributionally Robust Control Strategy for Frequency Safety based on Koopman Operator Described System Model

Tsinghua University(清华大学)

Qianni Cao, Chen Shen

AI总结:

本文提出基于Koopman算子描述系统模型的分布鲁棒数据驱动紧急频率控制框架,以提高频率安全性和降低控制成本。

摘要:

随着可再生能源和电力电子设备在电力系统中的比例增加,建模在电力短缺情况下的频率动态变得更加具有挑战性。尽管数据驱动方法有助于缓解这些挑战,但它们容易受到数据噪声和训练误差的影响,导致预测误差不确定。为了解决预测误差的不确定性和有限的统计信息,我们引入了一个分布鲁棒数据驱动紧急频率控制(DREFC)框架。该框架旨在确保频率安全的高概率,并允许决策者调整控制保守性。具体而言,DREFC解决了一个min-max优化问题,以找到在基于Wasserstein距离的模糊集内预测误差分布下的最优控制。通过分析近似VaR约束,我们实现了计算高效的重 formulations。仿真表明,DREFC确保了频率安全、低控制成本和低计算时间。

英文摘要:

As the proportion of renewable energy and power electronics in the power system increases, modeling frequency dynamics under power deficits becomes more challenging. Although data-driven methods help mitigate these challenges, they are exposed to data noise and training errors, leading to uncertain prediction errors. To address uncertain and limited statistical information of prediction errors, we introduce a distributionally robust data-enabled emergency frequency control (DREFC) framework. It aims to ensure a high probability of frequency safety and allows for adjustable control conservativeness for decision makers. Specifically, DREFC solves a min-max optimization problem to find the optimal control that is robust to distribution of prediction errors within a Wasserstein-distance-based ambiguity set. With an analytical approximation for VaR constraints, we achieve a computationally efficient reformulations. Simulations demonstrate that DREFC ensures frequency safety, low control costs and low computation time.

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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