基于多协议标记交换网络的电力系统信息综合传输方法

A Multi-Protocol Label Switching Network Based Integrated Information Transmission Method for Power Grids

研究了电力系统各类信息模型及其服务质量要求,在此基础上提出基于多协议标记交换(multi-protocol label switching,MPLS)技术的信息综合传输方案。对某电力公司信息综合传输网络进行了数字仿真,比较了无服务质量配置、单纯差分服务配置和MPLS网络配置3种方案下的服务质量,结果表明:MPLS网络配置方案能够实现链路间的负载均衡,具有自愈性故障恢复机制,可以快速检测到失效元件并在多条标签交换路径之间实现数据流量的切换,故障恢复时间在毫秒级,可以有效保证电力系统实时信息的服务质量,并可同时兼顾各种非实时信息的服务质量。

Various information models for power grids and qualilty of service （QoS） required for them are researched, on this basis a multi-protocol label switching （MPLS） technique based integrated information transmission approach is proposed. Digital simulation for the integrated imformation transmission network of a certain power company is performed, the QoS under three configuration schemes, i.e., without QoS configuraiton, with simple differnece service configuraiton and with MPLS network configuration, are compared. Comparison resutls show that the configuration scheme of MPLS network can implement the load balance among link circuits and possesses fault self-recovery mechanism, so the failure elements can be quickly detected and the switching over of data flow among label switched paths can be realized. The fault recovery time is within miliseconds, therefore the QoS of power system realtime information can be ensured effectively and the QoS of various non-realtime information can be considered as well.