An improved framework for power grid vulnerability analysis considering critical system features
An improved framework for power grid vulnerability analysis considering critical system features
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DOI：
10.1016/j.physa.2013.10.029
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发表时间：
2014-02
影响因子：
3.3
通讯作者：
Yuanyu Dai;Guo Chen;Z. Dong;Yusheng Xue;D. Hill;Yuan Zhao
中科院分区：
文献类型：
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作者：
Yuanyu Dai;Guo Chen;Z. Dong;Yusheng Xue;D. Hill;Yuan Zhao
近年来，复杂网络理论的快速发展为电网脆弱性分析提供了新的视角。然而，目前的分析模型通常是一般性的，可能会忽略电力系统的一些具体特征。针对这一问题，本文提出了一种改进的电网脆弱性分析框架。首先，对传统的拓扑图模型进行了改进，将电网描述为基于电抗矩阵的加权图。其次，利用功角信息重新定义了负荷的概念。第三，采用潮流约束代替基于最短路径的潮流方案。基于所提出的框架，建立了改进的动力分析模型。此外，还分别以IEEE118节点系统为例，对一般的传统模型和所提出的模型进行了数值仿真。比较表明，改进后的模型对电网的脆弱性分析更有效、更高效。
In recent years the rapid development of complex network theory has provided a new angle on the vulnerability analysis of a power grid. However, current analysis models are usually general ones that may ignore some specific features of power systems. In order to address the issue, this paper proposes an improved framework for the vulnerability analysis of power grids. Firstly, the traditional topology based graph model is improved by depicting a power grid as a weighted graph based on the reactance matrix. Secondly, the concept of load is redefined by using power angle information. Thirdly, the power flow constraints are adopted instead of the shortest path based flow scheme. Based on the proposed framework, an improved dynamic analysis model is developed. In addition, numerical simulations for both a general traditional model and the proposed model are investigated based on theIEEE118-bus system respectively. The comparison demonstrates that the improved model is more effective and efficient for the vulnerability analysis of a power grid.