Reliability Modeling and Evaluation of Active Cyber Physical Distribution System
Reliability Modeling and Evaluation of Active Cyber Physical Distribution System
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DOI：
10.1109/tpwrs.2018.2854642
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发表时间：
2018-11-01
影响因子：
6.6
通讯作者：
Wang, Lingfeng
中科院分区：
文献类型：
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作者：
Liu, Wenxia;Gong, Qi;Wang, Lingfeng
为了深入研究主动式信息-物理配送网络，迫切需要一个信息子系统模型来描述配送通信的性能。现有的研究中，对子系统间相互作用，特别是间接相互作用的量化方法还没有得到充分的研究。在本文中，一个新的模型来评估网络链路的有效性，考虑动态路由，延迟，通信错误，特别是网络流量。然后，提出了一种分析方法来量化网络故障的影响，考虑配电自动化过程中的功能有效性。并分别基于非序贯和序贯蒙特卡罗方法对网络子系统和物理子系统的可靠性进行了评估。最后，建立了一个可靠性评估测试系统，分析了网络故障的影响。此外，还对网络流量、元件故障率、网络拓扑和接入通信技术的影响进行了敏感性分析。所获得的结果可以提供有用的见解主动网络物理分销网络的规划和运营。
To enable an in-depth study of active cyber-physical distribution network, a cyber subsystem model is urgently needed to describe the performance in distribution communication. The methods for quantifying the interactions between subsystems, especially indirect interactions, have not been adequately studied in the existing research. In this paper, a novel model is developed to evaluate the validity of cyber link considering dynamic routing, delay, and communication error, particularly the cyber traffic. Then, an analytical method is presented to quantify the impact of cyber faults considering the functionality validity during distribution automation. And the reliability of cyber and physical subsystems is evaluated based on nonsequential and sequential Monte Carlo methods, respectively. Finally, a test system for reliability evaluation is established to analyze the influences of cyber faults. In addition, sensitivity analyses on the impact of cyber network traffic, element failure rate, and network topology and access communication technology are carried out. The obtained results could provide useful insights into planning and operation of active cyber-physical distribution networks.