arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.06210eess.SYcs.LGcs.SYstat.ML
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基于在线学习的AC网络辨识

Identification of AC Networks via Online Learning

University of Pavia(帕维亚大学);École Polytechnique Fédérale de Lausanne(洛桑联邦理工学院);Identification and Control of Dynamic Systems Laboratory(动态系统辨识与控制实验室);Institute of Mechanical Engineering(机械工程研究所)

Emanuele Fabbiani, Pulkit Nahata, Giuseppe De Nicolao, Giancarlo Ferrari-Trecate

摘要:

间歇性分布式能源在电网中的渗透率越来越高,这就需要新的规划和控制方法,这些方法依赖于对电网的详细了解。然而,关于系统拓扑结构和参数的可靠信息对于随时间变化的配电网络可能丢失或过时。本文提出了一种在线学习过程来估计网络导纳矩阵捕捉拓扑信息和线路参数。我们首先提供了一个递归识别算法,利用相量测量的电压和电流。随着加速收敛的目标,我们随后补充我们的基础算法与实验设计的过程,最大限度地提高数据的信息含量,在每一步计算最佳电压激励。我们的方法改进了现有的技术,其有效性是由现实的试验台上的数值研究证实。

英文摘要:

The increasing penetration of intermittent distributed energy resources in power networks calls for novel planning and control methodologies which hinge on detailed knowledge of the grid. However, reliable information concerning the system topology and parameters may be missing or outdated for temporally varying electric distribution networks. This paper proposes an online learning procedure to estimate the network admittance matrix capturing topological information and line parameters. We start off by providing a recursive identification algorithm exploiting phasor measurements of voltages and currents. With the goal of accelerating convergence, we subsequently complement our base algorithm with a design-of-experiment procedure which maximizes the information content of data at each step by computing optimal voltage excitations. Our approach improves on existing techniques, and its effectiveness is substantiated by numerical studies on realistic testbeds.

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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