基于依赖搜索树的电力通信网络告警关联方法的研究

Research of alarm correlation method based on dependency search tree in electric power communication network

从电力通信网的告警机制出发,针对其网络结构和告警信息数据的特征,对告警关联规则及故障定位进行了研究,利用搜索树可以减少搜索空间和覆盖结点的特点提出了一种基于依赖搜索树的告警关联方法。该方法的基本思想是把告警序列中属于一类的告警信息聚合在一起,并用较少的信息代替这一类,从而使海量告警信息简约化,最终能够准确的表达故障信息,达到定位故障的目的。该方法基于故障传输模型,建模简单,能够直接利用结点的依赖关系,并且适用于多故障源的情况。通过算例分析,证明此方法能对电力通信网络的告警信息进行分析,并且能快速准确发现故障源,便于网络的维护。

Aiming at the framework of electric power communication network and the character of alarm data, this paper investigates the formulae of alarm correlation and fault location, Taking into account dependency search tree which can decrease searching space and nodes of overlay, a method of alarm correlation based on dependency search tree is presented, Alarms belonged to one class in alarm sequence are aggregated, and they are replaced by less information. In this way, large numbers of alarm information are reduced and so the faults can be located accurately. This method based on the model of fault transmission is easy to build a model, can make use of the dependency of nodes directly and it is still applicable when many faults occur, A practical example of faults in electric power communication network is given to prove that this method can analyze alarm information of electric power communication network and locate faults rapidly and exactly. So network can be maintained expediently.