A New Vulnerability Index of Power System due to Terrorist Threats

In recent years, terrorist groups have become a major Threats for the world. These terrorist groups attack Critical infrastructures and cause substantial damages. One of the most critical infrastructures is power system which is an attractive target to terrorists. The experience of terrorist attacks shows the crippling effects of such attacks which could lead to public discontent. Vulnerability evaluation and identification the weak points of power system due to such threats are necessary in order to make appropriate decisions to defend against them. The aim of this article is to review common methods of vulnerability evaluation and present a new index for vulnerability evaluation of power system based on combination of expected energy not supplied index and other indices. The simulation results show using the new index leads to favorable outputs for determining the vulnerability of power system.