共享风险链路组与风险均衡的电力通信网路由优化策略  

Routing Optimization Strategy for Power Communication Network with Shared Risk Link Group and Risk Balance

作　　者：祁兵[1] 刘思放 李彬[1] 孙毅[1] 景栋盛 程紫运 QI Bing;LIU Sifang;LI Bin;SUN Yi;JING Dongsheng;CHENG Ziyun(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China;Information and Communication Branch,Suzhou Power Supply Company,Suzhou 215004,China;Economic and Technology Research Institute of State Grid Gansu Electric Power Company,Lanzhou 730050,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京市102206 [2]苏州供电公司信息通信分公司,江苏省苏州市215004 [3]国网甘肃省电力公司经济技术研究院,甘肃省兰州市730050

出　　处：《电力系统自动化》2020年第8期168-175,共8页Automation of Electric Power Systems

基　　金：中央高校基本科研业务费专项资金资助项目(2019MS004)。

摘　　要：从电力通信网的构成出发,分析了网络承载的业务和业务重要度的重要性。提出评价业务重要度的逼近理想解排序法(TOPSIS),分析了网络中广泛存在的共享风险问题,建立了风险均衡模型,提出了共享风险链路组(SRLG)与风险均衡的电力通信网路由优化算法。引入平均业务风险、风险均衡度、阻塞-风险综合指数和SRLG剩余带宽容量占比等指标进行路由优化和性能评价。以江苏省某市的光缆路由拓扑为例进行仿真,验证了所提算法的有效性。仿真结果表明,所提算法在不增加阻塞风险的情况下,有效降低了网络平均业务风险,提高了工作路径的风险均衡度,减少了SRLG剩余带宽容量占比进而降低了共享链路的业务失效风险。Based on the composition of power communication network,the importance of the network-borne service and its importance degree are analyzed.Then the technique for order preference by similarity to an ideal solution(TOPSIS)method for evaluating the importance of the business is proposed.The widely existing shared risk problem in the network is analyzed,and the risk balanced model is established.In the proposed shared risk link group(SRLG)and risk balanced routing optimization algorithm for power communication network,the average service risk,risk balancing degree,block-risk comprehensive index and SRLG remaining bandwidth capacity ratio are introduced to optimize the routing path and performance.The simulation is carried out in the cable routing topology of a city in Jiangsu Province of China to verify the effectiveness of the proposed algorithm.The simulation results show that without increasing the blocking risk of the network,the proposed algorithm effectively reduces the average network service risk,improves the risk balancing degree of the working path,and reduces the remaining bandwidth capacity ratio of SRLG and the failure risk of shared links.

关 键 词：电力通信网 业务重要度 共享风险链路组(SRLG) 平均业务风险 风险均衡度 

分 类 号：TM73[电气工程—电力系统及自动化]