ABSTRACT
Energy networks are among the critical infrastructures that are essential for the functioning of a society and economy. Probabilistic reliability estimation is being recognized as necessary and is becoming feasible in the planning process. Several methodologies are available for reliability assessment of energy networks, which are applicable to different domains. However, application of these methods to the real scale systems is often complicated due to the network size and complexity. The objective of this paper is to present fault tree based reliability modelling approach for analysis of a real scale energy networks. The method relies on the automatic fault tree construction and analysis for the whole network and any of the energy network nodes. Fault tree analysis is easily applicable for long-living systems and support of decision making as it allows use of updated reliability parameters and global importance measures in order to identify the most important system components.
