Grid vulnerability analysis based on scale-free graphs versus power flow models

摘要: Abstract Graph theory techniques have emerged as useful tools in analysis of the physical performance power grids, especially cascade failure events. Based on such models, several approaches been proposed to estimate transmission network vulnerability. The most accepted methodologies rely random error and deliberate attack tolerance assessment, conducted upon complex paradigms. However, a lack validation studies for verification effectiveness results obtained with methodologies, when applied electric infrastructures. This paper investigates structural vulnerability by means comparisons between flow models scale-free graph statistic indexes, generating conclusions appropriateness assessment is performed through simulations standard IEEE bus-testing networks. A discussion utilisation indexes graphs also contributed.