Gas networks comprise a special class of infrastructure, with relevant implications on safety and availability of universal services. In this context, the ongoing deregulation of network operation gives relevance to modeling and evaluation techniques supporting predictability of dependability metrics. We propose a modeling approach that represents maintenance procedures as a multi-phased system, with parameters depending on physical and geographical characteristics of the network, working hours, and evolution of loads over the day. The overall model is cast into a non-Markovian variant of stochastic Petri nets, which allows concurrent execution of multiple generally distributed transitions but maintains a complexity independent of network size and topology. Solution is achieved through an interleaved execution of fluid-dynamic analysis of the network and analytic solution of the stochastic model of the procedure. Solution provides availability measures for individual sections of the network as well as global quality of service parameters.

Modeling and Evaluation of Maintenance Procedures for Gas Distribution Networks with Time-Dependent Parameters / Laura Carnevali; Marco Paolieri; Fabio Tarani; Enrico Vicario; Kumiko Tadano. - ELETTRONICO. - 8696:(2014), pp. 304-315. (Intervento presentato al convegno International Workshop on Reliability and Security Aspects for Critical Infrastructure Protection (ReSA4CI) tenutosi a Firenze nel settembre 2014) [10.1007/978-3-319-10557-4_34].

Modeling and Evaluation of Maintenance Procedures for Gas Distribution Networks with Time-Dependent Parameters

CARNEVALI, LAURA;PAOLIERI, MARCO;TARANI, FABIO;VICARIO, ENRICO;
2014

Abstract

Gas networks comprise a special class of infrastructure, with relevant implications on safety and availability of universal services. In this context, the ongoing deregulation of network operation gives relevance to modeling and evaluation techniques supporting predictability of dependability metrics. We propose a modeling approach that represents maintenance procedures as a multi-phased system, with parameters depending on physical and geographical characteristics of the network, working hours, and evolution of loads over the day. The overall model is cast into a non-Markovian variant of stochastic Petri nets, which allows concurrent execution of multiple generally distributed transitions but maintains a complexity independent of network size and topology. Solution is achieved through an interleaved execution of fluid-dynamic analysis of the network and analytic solution of the stochastic model of the procedure. Solution provides availability measures for individual sections of the network as well as global quality of service parameters.
2014
Computer Safety, Reliability, and Security
International Workshop on Reliability and Security Aspects for Critical Infrastructure Protection (ReSA4CI)
Firenze
settembre 2014
Laura Carnevali; Marco Paolieri; Fabio Tarani; Enrico Vicario; Kumiko Tadano
File in questo prodotto:
File Dimensione Formato  
ReSA4CI14.pdf

Accesso chiuso

Tipologia: Pdf editoriale (Version of record)
Licenza: Tutti i diritti riservati
Dimensione 817.89 kB
Formato Adobe PDF
817.89 kB Adobe PDF   Richiedi una copia

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/918741
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? ND
social impact