面向电力业务需求的P圈/快速重路由混合故障保护算法

Service-oriented Hybrid P-cycle/Fast Reroute Protection Algorithm in Electric Power Systems

为解决电力通信网络所承载的不同等级业务的区分保护问题,文中在共享风险链路组(SRLG)的约束下,提出了一种面向电力业务需求的P圈/快速重路由(P-cycle/FRR)混合保护算法。针对通信网链路光缆芯数差异及不同的电力业务需求,实现了具有部分多链路故障恢复能力的电力业务分级保护。仿真结果表明,所提出的算法可保证网络重载情况下高优先级业务的故障恢复时间、业务阻塞率等关键指标,能够有效地支撑与电力系统生产安全相关的高等级业务信号故障的快速恢复。

In order to solve different protection problems for various services in electric power communication network,a service-oriented hybrid P-cycle/fast reroute（FRR）protection algorithm is proposed to provide fast restorability under shared risk link group（SRLG）constraint.In light of the number difference in fiber cores of electric power communication links and different service demands,hierarchical protection with the ability of partial multi-link failure restoration for electric power services is realized.The simulation results show that the approach proposed is able to reduce the fault restoring time and blocking rate of high priority services in heavy load scenarios,while providing fast restorability for high priority services associated with production safety of power systems.