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电网技术  2009 

电网安全评估体系分析

, PP. 90-96

Keywords: 电网安全评估,广义节点系统,评估体系,模糊综合评判法,群决策层次分析法,信息熵

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Abstract:

从整体上将所评估的某一特定电网视为一广义节点系统,同时考虑电源侧、用户侧及其它电网通过联络对节点系统安全的影响。分析了影响电网安全的主要因素,提出了通过变化量、变化率和敏感性系数等3个指标定量分析不确定性因素的方法,构建了电网安全评估的3级指标体系。提出了基于多级模糊综合评估法的电网整体评估模型,利用群决策层次分析法和信息熵原理确定权重。算例结果表明,文中提出的方法能有效评估和分析电网的总体安全,对电网安全工作具有积极的指导意义。

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