Impact of operators’ performance in the reliability of cyber‐physical power distribution systems

Abstract

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.

Parallelism Strategies for Big Data Delayed Transfer Entropy Evaluation

“…This study emerged from recurrent cluster usage in our laboratory, demanded by several applications as multi-scenarios' Monte Carlo simulations [78], optimization of large-scale systems reconfiguration [79], and in specific biosignals analysis with DTE [80]. Data used in those studies were made from intracellular multi-recording and large scale power distribution system.…”

Research on modelling and scheduling strategy for mine transportation control system based on CPS

“…According to the characteristics of distributed resource and dynamic changes of the next generation smart grid, You et al (2017) applied the concept of CPS into complex power systems, a dynamic mathematical model of distributed task decisions based on the network is proposed. By analysing the resource characteristics of CPS, Bessani et al (2016) analyse the reliability problems in the cyber-physical power distribution system (CPPDS). Based on the analysis of system response time and decision quality, a sequential Monte Carlo simulation method is proposed, which corrects the response time and improves the reliability of CPPDS.…”

Reliability assessment of a power system with cyber-physical interactive operation of photovoltaic systems

“…networks. Virtual part of the energy system is composed of CPS components and interacts with the physical part of the power system [19].…”