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arXiv 2402.02827cs.LGcs.SYeess.SY
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PowerGraph:面向图神经网络的电网基准数据集

PowerGraph: A power grid benchmark dataset for graph neural networks

ETHZ(苏黎世联邦理工学院);D-MAVT(机械与工程学院);D-INFK(计算机科学系)

Anna Varbella, Kenza Amara, Blazhe Gjorgiev, Mennatallah El-Assady, Giovanni Sansavini

AI总结:

针对电力电网领域缺乏公开GNN训练与基准测试图数据集的问题,研究提出包含潮流、最优潮流、连锁故障分析三类任务的PowerGraph基准数据集,提供真实解释并完成GNN多任务基准测试,为电力系统GNN研究提供资源。

摘要:

电网是对现代社会至关重要的关键基础设施,因此其设计需能在多种工况和故障下运行。持续推进的能源转型给决策者和系统运营商带来了新挑战。因此,开发电网分析算法对支撑电网可靠运行十分重要,这些关键工具包括潮流分析和系统安全分析,二者均为有效开展运行与战略规划所必需。文献综述显示,能高效完成这些分析的机器学习(ML)模型呈增长趋势。其中,图神经网络(GNN)因电网的图结构特性,在此类应用中表现突出。然而,目前缺乏用于电力电网应用中机器学习模型训练与基准测试的公开图数据集。首先,我们提出PowerGraph数据集,包含适配GNN的三类数据集,分别用于电网的i)潮流计算、ii)最优潮流、iii)连锁故障分析。其次,我们为连锁故障分析提供了真实标签解释。最后,我们针对节点级、图级任务及可解释性,对GNN方法开展了完整的基准测试。总体而言,PowerGraph是一个覆盖多类任务的多面GNN数据集,包含潮流与故障场景及真实场景解释,可为电力系统建模中开发更优的节点级、图级任务GNN模型及可解释性方法提供宝贵资源。该数据集可在https://figshare.com/articles/dataset/PowerGraph/22820534获取,代码可在https://github.com/PowerGraph-Datasets获取。

英文摘要:

Power grids are critical infrastructures of paramount importance to modern society and, therefore, engineered to operate under diverse conditions and failures. The ongoing energy transition poses new challenges for the decision-makers and system operators. Therefore, developing grid analysis algorithms is important for supporting reliable operations. These key tools include power flow analysis and system security analysis, both needed for effective operational and strategic planning. The literature review shows a growing trend of machine learning (ML) models that perform these analyses effectively. In particular, Graph Neural Networks (GNNs) stand out in such applications because of the graph-based structure of power grids. However, there is a lack of publicly available graph datasets for training and benchmarking ML models in electrical power grid applications. First, we present PowerGraph, which comprises GNN-tailored datasets for i) power flows, ii) optimal power flows, and iii) cascading failure analyses of power grids. Second, we provide ground-truth explanations for the cascading failure analysis. Finally, we perform a complete benchmarking of GNN methods for node-level and graph-level tasks and explainability. Overall, PowerGraph is a multifaceted GNN dataset for diverse tasks that includes power flow and fault scenarios with real-world explanations, providing a valuable resource for developing improved GNN models for node-level, graph-level tasks and explainability methods in power system modeling. The dataset is available at https://figshare.com/articles/dataset/PowerGraph/22820534 and the code at https://github.com/PowerGraph-Datasets.

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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