基于Petri网的电网故障诊断研究
摘要随着电力系统规模的扩大，电网之间的关联越来越紧密,使得电力系统故障难以避免。因此，研究高效的电网故障诊断方法，及时对大型电网中设备进行监测,处理事故电网,预防电网灾害等十分必要。82684
本文利用Petri网来研究故障诊断，从Petri网理论出发，给出了Petri网的建模方法、诊断运算过程以及故障判别规则。从基于电网拓扑结构的Petri网电网故障诊断入手，针对此类方法的不足引入了基于元件的Petri网故障诊断，并利用MATLAB对电网故障实例进行了仿真运算。同时，考虑到一般仅利用到可疑元件后备保护的诊断方法的缺陷，本文在基于元件Petri网故障诊断的基础上做出了一定完善，使得Petri网的电网故障诊断算法更为准确高效。最后，本文针对本课题研究的Petri网故障诊断方法的做出了总结与展望。
毕业论文关键词 故障诊断 Petri网 建模 仿真计算
毕业设计说明书外文摘要
Title Research on power network fault diagnosis based on Petri network
Abstract With the expansion of power system scale, the connection between the power grid becomes more and more closely, which makes it difficult to avoid the fault of power system。 Therefore, it is very necessary to study some high efficiency power grid fault diagnosis method in time to monitor and deal with the power grid and prevent the disaster。
It uses Petri network theory to study the fault diagnosis and gives the Petri network modeling method, diagnosis and operation of the process and the rules of fault diagnosis in this paper。 Starting with the Petri network fault diagnosis based on the network topology structure, the fault diagnosis of Petri network based on the element is introduced in view of the deficiency of this kind of method, and the simulation operation is carried out by using MATLAB。 At the same time, taking into account the general method which on the standby protection device of the diagnosis of the defect, this paper based on the Petri net components fault diagnosis has made some improvement,and makes the algorithm of Petri net in the fault diagnosis of power grid more efficient and accurate。 Finally, this paper makes a summary and Prospect of the defects of the Petri network fault diagnosis method based on this research topic。
Keywords Fault diagnosis Petri net Modeling Simulation
目次
1 绪论 1
1。1 引言 1
1。3 本论文的主要工作 3
2 Petri网理论及其在电力系统故障诊断中的应用 4
2。1 Petri网基本理论 4
2。2 Petri网的扩展应用 8
2。3 Petri网在电力系统故障诊断中的应用 9
2。4 Petri网故障诊断评价 16
2。5 本章小结 18
3 故障诊断的仿真计算 19
3。1 故障诊断流程 19
3。2 故障实例仿真运算 20
3。3 本章小结 28
4 基于元件Petri网模型的电网故障诊断的完善算法