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基于改进动态自适应模糊Petri网与BP算法的电网故障诊断

DOI: 10.13334/j.0258-8013.pcsee.2015.12.011, PP. 3008-3017

Keywords: 模糊Petri网,BP算法,故障诊断,电力系统,容错性

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Abstract:

为减小电网故障诊断过程中人为主观因素造成的误差,提高模糊Petri网模型的容错性和准确性,提出基于改进动态自适应模糊Petri网与BP算法的电网故障诊断方法。首先,在动态自适应模糊Petri网中引入补充弧元组,并利用动态自适应模糊Petri网能动态适应专家系统中模糊知识更新的特性,构建电网故障诊断的通用Petri网模型;其次,利用神经网络中的BP算法对模型中的参数进行训练;最后,分析该故障诊断方法的适应性与容错性。对某8节点测试系统和吉林四平实际电网的仿真结果表明:该算法充分利用了Petri网的并行处理能力,推理简单且思路清晰,在信息不完备的情况下能给出较准确的诊断结果,具有较好的容错性。

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