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电网技术  2010 

基于小世界拓扑模型的电网脆弱性评估

, PP. 64-68

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Abstract:

提出了基于小世界拓扑模型的大型电网脆弱性评估方法,以此来探索大电网中连锁故障传播的机理。首先进行电网的加权拓扑建模和网络基本特征参数计算;其次在随机攻击和蓄意攻击的形式下,通过计算其全局效率指标来分析电网的脆弱性程度;最后利用渗渝理论和最大供电区域理论计算电网在这2种攻击方式下的临界水平。通过对国内某一区域电网进行研究表明小世界电网对重要节点的依赖性远远大于普通节点,外部因素并不能从根本上改变电网固有的结构脆弱性,合理安排电网的网架结构将有助于改善电网的可靠性和稳定性水平。

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