基于ES-PN模型的电力系统故障诊断

提出了一种基于Petri网理论和专家系统的电力系统故障诊断方法,详细阐述了基于引出线诊断模型和鉴别故障元件的方法,包括故障元件和其保护的关联度。通过对保护的方向性、区域性以及关联度的分析,增加了模型的拓扑适应能力。这种方法克服了专家系统难于用数学方法描述的缺点,增强了Petri网在该问题上的推理能力,利用Petri网建立数学模型,提高了故障诊断速度。诊断结果表明,该方法能够大大减少响应时间,并且比之前的方法更能适应电网配置的变化。

Power System Fault Diagnosis Based on ES-PN Model

A power system fault diagnosis method based on Petri net theory and expert system is presented,the method based on outgoing line diagnosis model and fault equipment detection,fault equipment and their protection relevance are elaborated indetail,the topological adaptability of the model is increased through the nanlysis of direcivity,regional and relevance of the protection,therefore,this method overcomes the shortcoming that expert system is difficult to be described by mathematical method,increases speculative ability of Petri net on this problem and uses Petri net to set up mathematical model to boost fault diagnosis speed.The diagnosis results show that this method can greatly reduce response time and can better fit for the change of electrical power net configurations than previous method.