Power grid stability under perturbation of single nodes: Effects of heterogeneity and internal nodes.
Power grid stability under perturbation of single nodes: Effects of heterogeneity and internal nodes.
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DOI：
10.1063/1.5040689
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发表时间：
2018-05
期刊：
影响因子：
2.9
通讯作者：
M. Wolff;P. Lind;P. Maass
中科院分区：
文献类型：
--
作者：
M. Wolff;P. Lind;P. Maass
电网中的潮流动态可以用类似于具有惯性的非线性耦合振子的Kuramoto模型的方程来描述。由于输电线路、发电机和负载的不同特性，电网中振荡器或节点的耦合通常表现出明显的非均质性。在旨在揭示电力系统故障或故障机理的研究中，这些电网的异质性往往被忽视。然而，过于简单化可能会导致与现实背道而驰的结果。我们研究了电网中的异质性对电网稳定运行的影响，并展示了它们对估计电网稳定性的影响。我们的结论是通过比较电气和电子工程师协会测试网格的稳定性和该网格的均匀版本得出的。
Power flow dynamics in electricity grids can be described by equations resembling a Kuramoto model of non-linearly coupled oscillators with inertia. The coupling of the oscillators or nodes in a power grid generally exhibits pronounced heterogeneities due to varying features of transmission lines, generators, and loads. In studies aiming at uncovering mechanisms related to failures or malfunction of power systems, these grid heterogeneities are often neglected. However, over-simplification can lead to different results away from reality. We investigate the influence of heterogeneities in power grids on stable grid functioning and show their impact on estimating grid stability. Our conclusions are drawn by comparing the stability of an Institute of Electrical and Electronics Engineers test grid with a homogenized version of this grid.