Analyzing the topological, electrical and reliability characteristics of a power transmission system for identifying its critical elements

Enrico Zio (1) , L. R. Golea (2)

1 SSEC - Chaire Sciences des Systèmes et Défis Energétiques EDF/ECP/Supélec
2 Dipartimento di Energia [Milano]

The subject of this paper is the analysis of an electrical transmission system with the objective of identifying its most critical elements with respect to failures and attacks. The methodological approach undertaken is based on graph-theoretical (topological) network analysis. Four different perspectives of analysis are considered within the formalism of weighed networks, adding to the purely topological analysis of the system the reliability and electrical characteristics of its components. In each phase of the analysis: i) a graph-theoretical representation is offered to highlight the structure of the most important system connections according to the particular characteristics examined (topological, reliability, electrical or electrical-reliability); ii) the classical degree index of a network node is extended to account for the different characteristics considered. The application of these concepts of analysis to an electrical transmission system of literature confirms the importance of different perspectives of analysis on such a critical infrastructure.

Keywords: critical infrastructures; vulnerability assessment; electrical transmission system; network analysis; reliability; connectivity degree

Domains: Other

Enrico Zio, L. R. Golea. Analyzing the topological, electrical and reliability characteristics of a power transmission system for identifying its critical elements. Reliability Engineering and System Safety, 2012, 101, pp.67-74. ⟨10.1016/j.ress.2011.11.009⟩. ⟨hal-00675545⟩