模糊Petri网在高速铁路牵引供电系统故障诊断中的应用  

Application of Fuzzy Petri Net in Fault Diagnosis of Traction Power Supply System for High-Speed Railway

作　　者：吴双[1] 何正友[1] 钱澄浩[1] 臧天磊[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《电网技术》2011年第9期79-85,共7页Power System Technology

基　　金：国家自然科学基金项目(50878188)~~

摘　　要：指出在高速铁路牵引供电系统故障诊断中应计及所获取的保护和开关动作信息的不确信性和模糊性,基于此,将模糊Petri网(fuzzy Petri net,FPN)应用于牵引供电系统的故障诊断。考虑到牵引供电系统保护的特殊性,进行了第2次推理;针对越区供电时馈线远后备保护覆盖元件多的特点,增加了推理条件以保证推理的正确性;根据供电臂故障特征,给出了供电臂故障区间判别规则。算例分析结果表明,牵引供电系统的模糊Petri网故障诊断方法简洁、推理直观,能够在不确定或信息缺失的情况下,提高故障区域判断的确信性。It is pointed out that in the fault diagnosis of traction power supply system for high-speed railway the uncertainty and fuzziness in the obtained action information of protective relayings and circuit breakers should be taken into account. For this reason, the fuzzy Petri net is applied in the fault diagnosis of traction power supply system. Considering the particularity of protective relayings for traction power supply system, the second reasoning is conducted. In allusion to the feature that more components are brought into the protection range of feeder remote backup protection during over-zone power supply, the reasoning conditions are increased to ensure the correctness of the reasoning. According to the fault characteristic of feeder section, a discrimination rule for fault section in feeder section is given. Results of calculation example show that the fuzzy Petri net based fault diagnosis for traction power supply system is sententious and its reasoning is intuitionistic. The proposed fault diagnosis method can improve the credibility in the discrimination of fault section while the fault information is uncertain or absent.

关 键 词：高速铁路牵引供电系统 模糊PETRI网 故障诊断 越区供电 

分 类 号：TM711[电气工程—电力系统及自动化]