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电网技术  2010 

基于贝叶斯网的分布式电网故障诊断方法

, PP. 76-81

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Abstract:

基于LeakyNoisy-Or贝叶斯网进行动态建模,提出了一种分布式电网故障诊断方法。该方法采用电网保护测量元件动作信号作为诊断证据。针对诊断模型中的概率参数计算问题,提出了一种事件采样的先验概率计算方法。针对利用局部信息实现分布式电网故障诊断的问题,对LeakyNoisy-Or节点模型进行推导,给出了2个推理,证明了该分布式方法的可行性。采用逐步排除的方式,动态建立了元件诊断模型和联合诊断模型,通过推理计算实现了电网故障诊断。算例证明了该方法的正确性和有效性。

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