Impact of 1D vs 3D Earth Conductivity Based Electric Fields on Geomagnetically Induced Currents
Impact of 1D vs 3D Earth Conductivity Based Electric Fields on Geomagnetically Induced Currents
复制标题
基于 1D 与 3D 地球电导率的电场对地磁感应电流的影响
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
J. Gannon
中科院分区：
文献类型：
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作者：
K. Shetye;A. Birchfield;R. Lee;T. Overbye;J. Gannon
驱动地磁感应电流（GIC）的电场取决于地球深部的电导率。在电力系统GIC研究中，用于表示该电导率的模型因此影响GIC结果。在本文中，我们评估常用的一维电导率模型和更复杂的三维传递函数之间的差异，在它们对模拟GIC的影响方面，通过验证它们对实际GIC测量。我们的目标是提供说明性的结果，这些模型的性能，以显示目前的能力和领域的电导率模型，电力系统GIC建模的改进。本文强调了数据可用性对模型验证研究的重要性，以减轻GMD风险。
Electric fields that drive geomagnetically induced currents (GICs) depend on the deep earth conductivity. In a power system GIC study, the model used to represent this conductivity thus influences the GIC results. In this paper, we evaluate the differences between the commonly used lD conductivity model and the more complex 3D transfer functions, in terms of their impact on simulated GICs, by validating them against actual GIC measurements. The goal is to provide illustrative results on the performance of these models, in order to show the present capabilities and areas for improvement of conductivity models, and power system GIC modeling. The paper highlights the importance of data availability for model validation research, in order to mitigate the GMD risk.