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arXiv 2602.18261eess.SYcs.SYnlin.CD
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基于电力电网中功率负载推断的准确数据驱动状态估计

Accurate Data-Based State Estimation from Power Loads Inference in Electric Power Grids

University of Geneva(日内瓦大学);University of Applied Sciences of Western Switzerland HES-SO(瑞士西部应用科学大学 HES-SO);The University of Arizona(亚利桑那大学);ResCon Technologies(ResCon 技术公司)

Philippe Jacquod, Laurent Pagnier, Daniel J. Gauthier

AI总结:

本文提出了一种数据驱动的回归方法,用于准确推断电力电网中缺失的功率负荷值,通过线性回归算法在合成和实测数据上验证了其高精度和可靠性。

摘要:

准确的状态估计是电力系统可靠运行和控制的关键要求。本文构建了一种数据驱动的数值方法,用于推断大规模电力电网中缺失的功率负荷值。在给定部分电力需求观测值的情况下,该方法利用线性回归算法估计运行状态,利用合成训练数据集内的统计相关性。我们在三个合成输电电网测试系统上评估了该方法的性能。数值实验表明,该方法在各种运行条件下能够高精度地重建缺失的需求值。我们进一步将该方法应用于瑞士输电电网的实测数据。尽管该数据集的观测值数量有限,但该方法仍能较为准确地推断出缺失的电力负荷。此外,牛顿-拉夫森功率流解算显示,功率负荷的真实值与推断值之间的偏差导致电力线上的流值真实值与推断值之间的偏差更小。这确保了估计的运行状态能够正确捕捉潜在的线路故障。总体而言,我们的结果表明,简单的数据驱动回归技术可以为现代电力电网的状态估计提供高效且可靠的选择。

英文摘要:

Accurate state estimation is a crucial requirement for the reliable operation and control of electric power systems. Here, we construct a data-driven, numerical method to infer missing power load values in large-scale power grids. Given partial observations of power demands, the method estimates the operational state using a linear regression algorithm, exploiting statistical correlations within synthetic training datasets. We evaluate the performance of the method on three synthetic transmission grid test systems. Numerical experiments demonstrate the high accuracy achieved by the method in reconstructing missing demand values under various operating conditions. We further apply the method to real data for the transmission power grid of Switzerland. Despite the restricted number of observations in this dataset, the method infers missing power loads rather accurately. Furthermore, Newton-Raphson power flow solutions show that deviations between true and inferred values for power loads result in smaller deviations between true and inferred values for flows on power lines. This ensures that the estimated operational state correctly captures potential line contingencies. Overall, our results indicate that simple data-based regression techniques can provide an efficient and reliable alternative for state estimation in modern power grids.

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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