多因素分级Petri网配电故障诊断方法

发布时间：2018-03-30 06:10

本文选题：保护启动信息　切入点：连续电气信息　出处：《电网技术》2017年03期

【摘要】：针对采用概率方法进行故障诊断易造成调度操作风险大的问题,提出一种配电网故障诊断的多因素分级Petri网模型,主要解决断路器或保护拒动、误动等故障信息不确定情况下的故障问题。该方法充分考虑了保护启动信息、保护出口信息、重合闸动作信息、断路器动作信息、事件顺序记录(sequence of event,SOE)时序信息以及连续电气量,实现故障信息不确定情况下的电网故障诊断。当电网故障存在信息不确定情况时,首先将连续电气量和SOE时序信息作为该模型的一级诊断区的输入,然后通过将连续电气量的故障时刻与SOE时序的故障时刻进行比较,根据比较结果判断并激发托肯能量变化的推理过程,给出存在信息不确定的情况下电网故障诊断结果。最后,针对某局部配电网模型进行了仿真验证,结果表明了该方法的有效性。
[Abstract]:A multi-factor hierarchical Petri net model for fault diagnosis of distribution network is proposed to solve the problem of high risk of dispatching operation caused by using probabilistic method in fault diagnosis, which mainly solves the problem of circuit breaker or protection failure. This method takes full account of protection start information, protection exit information, reclosing action information, circuit breaker action information, etc. The sequence of event SOE (sequence of event SOE) information is recorded in order to realize the fault diagnosis of power network under the condition of uncertain fault information. First, the continuous electrical quantities and the SOE timing information are taken as the input of the primary diagnostic area of the model, and then the fault time of the continuous electrical quantities is compared with the fault time of the SOE sequence. According to the comparison results, the reasoning process of the energy change of Tocken is judged and excited, and the fault diagnosis results of the power network with uncertain information are given. Finally, the simulation of a local distribution network model is carried out. The results show that the method is effective.
【作者单位】：东北大学信息科学与工程学院;国网营口供电公司;
【基金】：国家自然科学基金项目(61273029)~~
【分类号】：TP301.1;TM73

【相似文献】