基于Petri网并分解技术的电网故障诊断

Fault Diagnosis of Power System Based on the Union Decomposition Technology of Petri Net

阻碍Petri网技术在实践应用中发展的重要问题是"状态爆炸",并分解技术是解决"状态爆炸"的一种有效措施,但如何分解仍是一个非常困难的问题。文中分析了电网故障诊断Petri网的特点,提出了一种无环、多输出库所Petri网的分解方法,并将它应用于电网故障诊断,同时提出了基于并分解Petri网故障诊断算法。对湖南某地方10 kV配电间进行仿真试验,验证了该方法的有效、可行和准确。

The union decomposition is an effective approach to resolve the important problem of Petri net ＂station explosion＂ which bars the development of Petri net in application . But it is still difficult to decompose a net . This paper analyses the charactor of the fault diagnosis Petri net, and puts forward a decomposition method for a no-ring, multi-place Petri net which is used for the power fault diagnosis. Meanwhile, the diagnosis algocithm based on the union decomposition Petri net is also proposed. The proposed method is proved to be effective ,feasible and accurate through the simulation of a 10 kV distribution in Hunan.