Assessment of Infrastructural and Operational Resilience of Transmission Lines During Dynamic Meteorological Hazard

The occurrence of extreme meteorological dynamic hazards has endangered the operation of power system and its components in the past few decades, emphasizing the need to create efficient methods and models to assess the resilience capability of the critical system infrastructure and the impact of such hazards on the system in future. In this paper, resilience metrices based method is proposed for assessment of infrastructural and operational resilience of the transmission lines during hazardous weather events such as severe cyclonic windstorms. A sequential Monte Carlo (MC)-based time-series model is used to determine the weather effect on the transmission networks. Weather data is mapped with the fragility curve of the transmission line to obtain the failure status of the transmission line. The proposed study is investigated on the standard IEEE 30 bus system for determining the vulnerable transmission lines lying in the path of cyclonic windstorm. The findings may be helpful in planning and operation of power system by determining the impact of such hazards and establishing an early warning weather hazard system to avert substantial system component damage.