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考虑共因失效的电力系统地震灾害风险评估

, PP. 44-54

Keywords: 电力系统,共因失效,熵权,地震灾害,风险评估

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Abstract:

研究网络层面的地震灾害风险评估模型和方法,对于提高电力系统的抗灾能力至关重要,而中国在这些方面的研究尚不完善。分析地震灾害的特点,提出考虑共因失效的电力系统地震灾害分析思路及理论框架;基于场地地震动值的估算方法,建立元件损坏概率模型;综合考虑网络结构和运行情况对电力系统抗震性能的影响,提出电力系统地震灾害风险评估算法和指标体系,并通过熵权综合评价各指标对节点抗灾能力的影响,计算出节点的综合灾害风险指标。实际电网算例验证说明:所提算法是切实可行的,能寻找系统的薄弱环节,有助于提高电网的抗震性能。

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