Statistic Characteristics of Hunan Power Grid Faults Analysis
This paper investigates time series of faults in Hunan power grid.Investigation shows that the time series of faults have long term correlation and its probability distribution has power law tail,which indicate its characteristic of self-organized criticality(SOC).Analysis on the faults causes show that extreme climate contributes most to power system faults.Therefore,it is reasonable to conclude that the powe system faults derived its SOC from impact of atmosphere system.