基于最短路径敏感度的光网络关键链路识别  

Key Link Identification of Power Optical Network based on Shortest Path Sensitivity

作　　者：田云飞 彭玲艳 程紫运 韩东升[2] 靳攀润 TIAN Yun-fei;PENG Ling-yan;CHENG Zi-yun;HAN Dong-sheng;JIN Pan-run(Economics&Technology Research Institute,State Grid Gansu Electric Power Company,Lanzhou 730050,China;School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China)

机构地区：[1]国网甘肃省电力公司经济技术研究院,兰州730050 [2]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《光通信研究》2020年第2期11-15,共5页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61771195);国网甘肃省电力公司科技资助项目(271833-KXKJ-034)。

摘　　要：电力光网络的关键链路对业务质量的安全和可靠保障具有重要作用。关键链路识别方法的研究有助于提高识别过程的高效性和准确性。文章首先将最短路径敏感度作为网络效能测度,并通过计算网络节点间最短路径长度,研究链路状态恶化对网络效能的影响;然后,基于跳数最少、时延最短和可靠性最高等3种不同目标,对链路状态变化与最短路径敏感度关联关系进行统计分析,得到关键链路指标;最后,以实际的省级电力通信网为算例,验证方法的可行性和正确性。研究结论对电力光网络的规划设计和运行维护具有参考价值。The key links of power optical networks play an important role in the security and reliable protection of quality of service. Research on the key link identification method helps to improve the efficiency and accuracy of the identification process. In this paper, we first measure the shortest path sensitivity in the network. Then the shortest path length between network nodes is calculated to study the effect of link state deterioration on network performance. Next, based on three different targets, such as minimum hop count, shortest delay and highest reliability, we conduct a statistical analysis on the link state change and the correlation relationship on the shortest path sensitivity to obtain key link indicators. Finally, the actual provincial power communication network is taken as an example to verify the feasibility and correctness of the method. The research conclusion has reference value for the planning, design and operation maintenance of power optical network.

关 键 词：电力通信网 光网络 关键链路 最短路径 敏感度 

分 类 号：TN915.853[电子电信—通信与信息系统]