Stochastic modeling for performance and availability evaluation of hybrid storage systems

Borba, Eric; Tavares, Eduardo

doi:10.1016/j.jss.2017.08.043

Cited by 6 publications

(2 citation statements)

References 41 publications

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“…On the other hand, stochastic models have been applied to several different analysis domains such as failure propagation in chemical plants [16,17], failure in electric power systems [18,19], performance and availability of hybrid storage systems [20], and predicting the propagation of train delays [21,22]. Recent works on the application of the Petri Nets formalism to railway systems take into consideration specific management or decision issues such as the estimation of train delays ( [23,24]), the design of a controller for railway crossing systems ( [25,26]), train rescheduling problem ( [27][28][29][30]), and performability evaluation of emergency stops for the European Rail Traffic Management System ( [31]).…”

Section: Related Workmentioning

confidence: 99%

A stochastic modeling approach for traffic analysis of a tramway system with virtual tags and local positioning

et al. 2021

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Traditional solutions for tramway interlocking systems are based on physical sensors (balizes) distributed along the infrastructure which detect passing of the trams and trigger different actions, like the communications with the ground infrastructure and the interlocking system. This approach is not easily scalable and maintainable, and it is costly. The SISTER project designed new architectural solutions for addressing the previous problems based on the virtualization of the sensors and on the local positioning of each tram. The key idea is to trigger actions when the computed local position corresponds to a virtual tag. However, the computed position can be affected by errors, compared to the real one. Therefore, it is important to understand the impact of these new solutions on the traffic that can be supported by the tramway network. This paper presents a stochastic modeling approach for analysing the performability of a tramway system based on the SISTER architectural solutions, aiming to identify the parts of the tramway network that are more critical and sensible to the variation of the traffic conditions and to the setting of the key architectural parameters. We build a model using Stochastic Activity Networks and run sensitivity analyses on (i) the accuracy of the positioning, (ii) the different SISTER parameters, and (iii) considering possible outages temporarily blocking the journey of a tram. This analysis allows to properly set and fine-tune the key architectural parameters, to understand the impact of the accuracy on the positioning, to understand the impact of the outages.

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Section: Related Workmentioning

confidence: 99%

A stochastic modeling approach for traffic analysis of a tramway system with virtual tags and local positioning

et al. 2021

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“…The tramway domain has been studied in different contexts such as energy consumption [1], attractiveness [2], and multimodal traveler information systems [3]. On the other hand, stochastic models have been applied to several different analysis domains such as failure propagation in chemical plants [4], failure in electric power systems [5], performance and availability of hybrid storage systems [6], and predicting the propagation of train delays [7]. Specifically, in [8], Stochastic Time Petri Nets are used for performability evaluation of emergency stops for the European Rail Traffic Management System.…”

Section: Introductionmentioning

confidence: 99%

Performability Analysis of a Tramway System with Virtual Tags and Local Positioning

Silva

Mongelli

Lollini

et al. 2019

2019 9th Latin-American Symposium on Dependable Computing (LADC)

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Current solutions for tramway Interlocking Systems are based on physical sensors (balizes) distributed along the infrastructure which detect passing of the trams and trigger different actions. This approach is not easily scalable and maintainable, and it is costly. The Regional Project SISTER aims at designing new architectural solutions for addressing the previous problems based on the virtualization of the sensors and on the local positioning of each tram. The idea is to trigger actions when the computed local position corresponds to a virtual tag. However, the computed position can be affected by errors, compared to the real one. Therefore, it is important to understand the impact of these new solutions on the performability of the system. This paper focuses on the analysis of the performability of a tramway system, based on the SISTER architectural solutions. We build a model using Stochastic Activity Networks and run sensitivity analyses on i) the accuracy of the positioning, ii) the different SISTER parameters (e.g., those triggering the activation of manual procedures). This analysis allows us to properly set and fine-tune the key architectural parameters, to understand the impact of the accuracy on the positioning, and to understand the impact of failures.

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Collaborative Platform for Urban Transport Engineering, Praia Case Study

Tavares

Szpytko

2019

On the Move to Meaningful Internet Systems: OTM 2018 Workshops

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Stochastic modeling for performance and availability evaluation of hybrid storage systems

Cited by 6 publications

References 41 publications

A stochastic modeling approach for traffic analysis of a tramway system with virtual tags and local positioning

A stochastic modeling approach for traffic analysis of a tramway system with virtual tags and local positioning

Performability Analysis of a Tramway System with Virtual Tags and Local Positioning

Collaborative Platform for Urban Transport Engineering, Praia Case Study

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