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首页> 外文期刊>European transactions on electrical power engineering >Structural vulnerability analysis in small-world power grid networks based on weighted topological model
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Structural vulnerability analysis in small-world power grid networks based on weighted topological model

机译：基于加权拓扑模型的小世界电网网络结构漏洞分析

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摘要

The topological analysis of complex networks provides essential information about its structure and vulnerability. However, there are many ways to represent a network as a graph. The electric power grid can be analyzed as a simple graph by ignoring its electrical dynamics and considering it as unweighted and undirected. These methods do not include the weight of lines, which is a disadvantage of such an analysis. For a power grid network, weights (impedance) relate to electrical concepts, such as maximum power through the line. So a weighted network assessment can improve the power grid network representation. This article did the structural analysis of the Indian power grid and IEEE 300, 118, 39 bus network based on both topological and electrical connectivity. The topological analysis was carried out by taking into account these networks as unweighted and weighted. Our work divided into three categories. Firstly, we have analyzed these power grid networks structural details. Secondly, through the matrices adapted from complex network theory, we identified the most critical transmission lines and buses. We estimate the impact on the performance of the electrical power grid by modeling cascade events from the removal of these lines and substation. Based on this removal strategies, AC optimal power flow problem was solved. Finally, the results are compared for both weighted and unweighted networks. In conclusion, weighted network analysis provides a better algorithm for vulnerability assessment than an unweighted network.
机译：复杂网络的拓扑分析提供了有关其结构和漏洞的基本信息。但是，有很多方法可以将网络作为图形表示。通过忽略其电动动力学并将其视为未加权和无向，可以将电力电网作为简单的图表分析为简单的图表。这些方法不包括线的重量，这是这种分析的缺点。对于电网网络，权重（阻抗）涉及电气概念，例如通过线路的最大功率。因此，加权网络评估可以改善电网网络表示。本文基于拓扑和电连接的印度电网和IEEE 300,118,39，39总线网络的结构分析。通过考虑到这些网络作为未加权和加权来进行拓扑分析。我们的工作分为三类。首先，我们分析了这些电网网络结构细节。其次，通过改编自复杂网络理论的矩阵，我们确定了最关键的传输线路和总线。我们通过将级联事件从去除这些线和变电站建模来估计对电力电网性能的影响。根据这种去除策略，解决了交流最优功率流量问题。最后，将结果与加权和未加权网络进行比较。总之，加权网络分析提供了比未加权网络的漏洞评估更好的算法。

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