Istituto di Scienza e Tecnologie dell'Informazione     
Chiaradonna S., Lollini P., Di Giandomenico F. On a modeling framework for the analysis of interdependencies in electric power systems. In: IEEE/IFIP 37th Int. Conference on Dependable Systems and Networks. DSN 2007 (Edinburgh, UK, 25-28 June 2007). Proceedings, pp. 185 - 195. IEEE Computer Society, 2007.
Nowadays, economy, security and quality of life heavily depend on the resiliency of a number of critical infrastructures, including the Electric Power System (EPS), through which vital services are provided. In existing EPS two cooperating infrastructures are involved: the Electric Infrastructure (EI) for the electricity generation and transportation to final users, and its Information-Technology based Control System (ITCS) devoted to controlling and regulating the EI physical parameters and triggering reconfigurations in emergency situations. This paper proposes a modeling framework to capture EI and ITCS aspects, focusing on their interdependencies that contributed to the occurrence of several cascading failures in the past 40 years. A quite detailed analysis of the EI and ITCS structure and behavior is performed; in particular, the ITCS and EI behaviors are described by discrete and hybrid-state processes, respectively. To substantiate the approach, the implementation of a few basic modeling mechanisms inside an existing multi-formalism/multi-solution tool is also discussed.
DOI: 10.1109/DSN.2007.68
Subject Electric Power System
Modelling framework
Stochastic process
SAN formalism

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