基于GOOSE反馈机制的智能变电站过程层网络备用方法

A backup approach for process-level network of smart substation based on GOOSE feedback mechanism

智能变电站过程层光纤网络一旦发生故障,会使二次系统功能失效,故障修复效率低,可靠性降低。为此,提出一种基于GOOSE反馈机制的智能变电站过程层网络备用方法。文章根据二次系统对过程层网络的传输要求,对间隔抖动、丢帧率和光功率等指标建立相应的危害程度量化模型;建立了备用光纤光口单指标和综合指标启动判据;利用GOOSE反馈机制实现对主光纤光口的备用。仿真表明,所提方法可快速完成故障光纤光口的备用切换,提高了过程层网络的可靠性。

Once the process-level network of smart substation fails,the secondary system function fails,the fault repair efficiency is low,and the reliability is reduced.In view of this,a backup approach for process-level network of smart substations based on the GOOSE feedback mechanism is proposed in this paper.According to requirements of the secondary system to process-level network transmission,the corresponding hazard quantification models for interval jitter,frame loss rate and light power are established.The single-index and integrated indices based starting criteria for backup optical fiber ports are put forward.The GOOSE feedback mechanism is used to realize the backup of main optical fiber ports.Simulation results show that the proposed method can quickly implement the backup switch of faulty optical fiber ports and improve the reliability of the process-level network.