基于时间约束Petri网的电网警报处理及故障诊断  

Power systems alarm processing technology and fault diagnosis based on Petri nets with timing constraints

作　　者：杨健维[1] 何正友[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力系统保护与控制》2012年第1期77-84,90,共9页Power System Protection and Control

基　　金：国家自然科学基金项目(50877068)~~

摘　　要：充分利用警报信息的时序属性和保护断路器动作的逻辑规则,提出了一种基于时间约束Petri网的电网警报处理及故障诊断方法。介绍了电力系统警报信息间的时序关系,以及常见警报差错信息的分类。提出了时间约束Petri网方法,引入时间约束通路的概念,直观地表达了警报信息之间的时序属性。提出了警报差错信息的识别算法,有效地识别警报信息中的误报、丢失以及时序不一致等情况。对不考虑时间约束与考虑时间约束两种情况下的故障诊断结果进行比较分析。结果表明所提出的警报处理方法,更加精确地描述了故障警报信息间的逻辑关系,使故障诊断结果更加准确。By taking full advantage of the temporal information of the alarm message and the logical rules of.circuit breakers, an alarm information processing and diagnostic method based on Petri nets with timing constraints is proposed in this paper. At first, the temporal relationship of the alarm message and the classification of common alarm error message of power system are introduced. Secondly, a method based on the time constraint Petri net is presented, and the conception of progress in timing constraints is introduced, the temporal information of the alarm message is expressed intuitively. Thirdly, the recognition algorithm of alarm error message is proposed which can effectively recognize misreports, missing messages and timing inconsistencies, etc. Finally, the results of fault diagnosis in both cases considering the time constraints and not considering the time constraints are compared and analyzed. The results show that the alarm message processing method can describe the logical relationship of the fault alarm message more precisely and make the fault diagnosis results more accurately.

关 键 词：警报 时序属性 时间约束通路 PETRI网 电力系统 故障诊断 

分 类 号：TM711[电气工程—电力系统及自动化]