工矿自动化2025，Vol.51Issue(1)：85-94,10.DOI:10.13272/j.issn.1671-251x.18233
基于故障枚举树生成模糊Petri网的变电站故障诊断方法
Fault diagnosis method for substations based on fault enumeration tree to generate fuzzy Petri net
摘要
Abstract
To address the issues of complexity and difficulty of automatic modeling in Petri net fault diagnosis models that incorporate temporal information,a fault diagnosis method for substations based on generating fuzzy Petri nets from fault enumeration trees is proposed.To comprehensively traverse all fault combination scenarios in the substation system,a fault enumeration tree traversal method based on Breadth-First Search(BFS)was developed,enabling the rapid simulation of primary and secondary fault combinations in substations.Based on the simulation results,a fuzzy temporal Petri net fault diagnosis model for substations was established,and parallel inference was employed for fast fault diagnosis.Primary and secondary interconnected simulation for a typical 110 kV substation was tested on the CloudPSS cloud simulation platform.The test results indicated that the proposed method incorporated the action time limit information of protection devices and circuit breakers into the fault inference process.By comparing the timestamps for action time limits and alarm information,alongside matrix operations in the classical Petri net model,the method demonstrated strong diagnostic performance,even in the case of distorted alarm information.This approach could be applied to more complex secondary protection systems while ensuring fault diagnosis accuracy.The parallel hierarchical matrix inference algorithm improved the inference efficiency of the diagnostic model,providing significant practical value.Additionally,the inference process included a confidence correction step,which more thoroughly considered the impact of protection failures,false trips,and misreported or omitted alarm information on fault diagnosis,improving fault tolerance in complex fault scenarios.关键词
变电站/故障诊断/继电保护/CloudPSS建模仿真/模糊Petri网Key words
substation/fault diagnosis/relay protection/CloudPSS modeling and simulation/fuzzy Petri net分类
矿业与冶金引用本文复制引用
吴与伦,肖谭南,陈颖..基于故障枚举树生成模糊Petri网的变电站故障诊断方法[J].工矿自动化,2025,51(1):85-94,10.基金项目
国家自然科学基金企业创新发展联合基金重点资助项目(U22B2096). （U22B2096）
