Impact of Operators' Performance on the Reliability of Cyber-Physical Power Distribution Systems
Impact of Operators' Performance on the Reliability of Cyber-Physical Power Distribution Systems
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发表时间：
2016
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通讯作者：
M. Bessani;R. Fanucchi;A. Delbem;Carlos Dias Maciel
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作者：
M. Bessani;R. Fanucchi;A. Delbem;Carlos Dias Maciel
信息物理系统是信息和通信技术与物理系统相结合的结果。一个特殊的情况是网络物理电力系统（CPPS），它使用通信技术来执行实时监控和操作。这些类型的系统变得更加复杂，影响了系统的特性，例如其可靠性。此外，已经知道，就网络物理配电系统（CPPDS）的可靠性而言，通信网络的故障与电气网络故障一样相关。然而，一些操作员的性能，如响应时间和决策质量，在CPPDS突发事件尚未调查。在本文中，我们介绍了一个模型的操作员响应时间，提出了一个顺序蒙特卡罗模拟方法，将响应时间的CPPDS可靠性指标估计，并评估操作员响应时间的可靠性指标的影响。我们的方法进行了测试，CPPDS使用不同的值的平均响应时间的运营商。结果表明，操作员的响应时间会影响与故障持续时间相关的可靠性指标，表明快速决策直接有助于系统性能。我们认为CPPDS可靠性的提高不仅取决于电气和通信部件，还取决于操作员的表现。
: Cyber-Physical Systems are the result of integrating information and communication technologies into physical systems. One particular case are Cyber-Physical Power Systems (CPPS), which use communication technologies to perform real-time monitoring and operation. These kinds of systems have become more complex, impacting on the systems’ characteristics, such as their reliability. In addition, it is already known that in terms of the reliability of Cyber-Physical Power Distribution Systems (CPPDS), the failures of the communication network are just as relevant as the electrical network failures. However, some of the operators’ performances, such as response time and decision quality, during CPPDS contingencies have not been investigated yet. In this paper, we introduce a model to the operator response time, present a Sequential Monte Carlo Simulation methodology that incorporates the response time in CPPDS reliability indices estimation, and evaluate the impact of the operator response time in reliability indices. Our method is tested on a CPPDS using different values for the average response time of operators. The results show that the response time of the operators affects the reliability indices that are related to the durations of the failure, indicating that a fast decision directly contributes to the system performance. We conclude that the improvement of CPPDS reliability is not only dependent on the electric and communication components, but also dependent on operators’ performance.