基于保护信息优先级的新型广域保护算法

A novel wide-area protection algorithm based on protection information priority

现有通信系统无法满足广域保护的需求,依据不同通信状态,提出一种将元件对应的保护信息按优先级别上传至中心层的广域保护方法。该方法首先根据各元件自身重要性、可靠程度及其对应保护可靠动作情况,采用权值分配与阈值设置的方法划分元件保护优先级;当通信良好时,将元件对应的保护信息按优先级上传,当通信不正常时,只上传高优先级元件的保护信息,减小通信量,待通信状况恢复正常,按其余保护信息的优先级依次上传;最后,在OPNET平台上搭建基于此方法的某区域广域保护通信系统模型,仿真结果表明:该文所提出的方法能满足中心层对就地层保护的可靠性要求,延时明显小于传统方法。

The existing communication system cannot guarantee the demands of wide protection.Based on the status of communication,a novel wide protection algorithm by send the protection information priority was proposed in this paper.Firstly,the importance and reliability of local components and the reliable operation condition of its protections were analyzed.And then,the weights of each status were distributed and threshold values were set to determine priorities of each protection.Under good communication,the protection information was sent to the central by priority,while under abnormal communication,the higher priority information was sent to the central at first.When the communication went to normal condition,the remaining protection information was sequentially uploaded by priority.It could reduce the network traffic.Finally,the proposed method and traditional method was respectively conducted on model of wide-area protection communication system on OPNET platform,the results verified the proposed method could meet the reliability requirements of protection and reduce the communication delay obviously.