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共享风险链路组与风险均衡的电力通信网路由优化策略
作者:
作者单位:

1.华北电力大学电气与电子工程学院;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

作者简介:

通讯作者:

基金项目:

中央高校基本科研业务费专项资金资助项目(2019MS004)。


Shared Risk Link Group and Risk Balanced Routing Optimization Strategy for Power Communication Network
Author:
Affiliation:

1.School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;2.Information and Communication Branch, Suzhou Power Supply Company, Suzhou 215004, China;3.Economic &4.Technology Research Institute of State Grid Gansu Electric Power Company, Lanzhou 730050, China

Fund Project:

This work is supported by the Fundamental Research Funds for the Central Universities (No. 2019MS004).

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    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。

    Abstract:

    Based on the composition of power communication network, the importance of the network-borne service and its importance degree is 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 existed 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 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, reduces the remaining bandwidth capacity ratio of SRLG and lowers the failure risk of shared links.

    表 2 Table 2
    表 1 Table 1
    图1 电力通信网组成架构Fig.1 Architecture of power communication network
    图2 SRLG和业务分布示意图Fig.2 Schematic diagram of SRLG and service distribution
    图3 SRLG局部实际架设情况Fig.3 Partial situation of actual building of SRLG
    图4 某地区部分电力光缆建设方案Fig.4 Part of optical cable construction scheme in a certain area
    图5 SRB-RO算法流程图Fig.5 Flow chart of SRB-RO algorithm
    图 江苏省某市电力光缆路由网络Fig. Power cable routing network in a city of Jiangsu Province
    图 k=5时不同业务请求数量下的平均业务风险对比Fig. Comparison of average service risk under different service request numbers at k=5
    图 k=5时不同业务请求数量下阻塞-风险综合指数对比Fig. Comparison of block-risk comprehensive index under different service request numbers at k=5
    图 不同k值和业务请求数量下SRB-RO工作路径的平均业务风险对比Fig. Comparison of average service risk of SRB-RO working path under different k values and service request numbers
    图 k=5时不同业务请求数量下的风险均衡度对比Fig. Comparison of risk balance degree under different service request numbers at k=5
    图 不同业务请求数量下的SRLG剩余带宽容量占比Fig. SRLG remaining bandwidth capacity ratio under different service request numbers
    表 3 Table 3
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引用本文

祁兵,刘思放,李彬,等.共享风险链路组与风险均衡的电力通信网路由优化策略[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190702006.
QI Bing,LIU Sifang,LI Bin,et al.Shared Risk Link Group and Risk Balanced Routing Optimization Strategy for Power Communication Network[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190702006.

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  • 收稿日期:2019-07-02
  • 最后修改日期:2020-02-20
  • 录用日期:2019-08-22
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