Geographical impacts of natural disaster on power system reliability

The natural disasters would strongly increase the probabilities of transmission lines outage and thus would rise the risks of power system. The interaction between the electrical topology of the power system and the physical geography of the disasters determines how much the impact is on power system reliability. This paper focuses on the influence of natural disasters on power system in a reliability geography point of view. We propose an index of disaster zone importance index (DZII) to quantify the influence of disaster zones on the system and to identify the critical disaster zones. A non-sequential Monte Carlo method considering model of disasters are carried out to implement the operational reliability assessment. A real world case study based on Jiangxi provincial power system in China is carried out to demonstrate the geographical impacts of ice disasters on power system reliability.