Abstract
A framework for the risk management of power dist ributions was developed, which consists of the fragility curve of the electric pole, the typhoon hazard curve and the minimization method of expected total cost. The fragility curv e of the electric pole was constructed by the damage data caused by Typhoon 0314 and the local gust wind speed in Miyakojima evaluated by a CFD model. The typhoon hazard curve at the individual location of electric pole was constr ucted based on the annual maximum gust wind speeds obtained from the typhoon simulation and the local wind prediction. The optimum design wind speed for each pole was decided by using the minimization method of expected total cost. The expected total cost in the design life of the poles by the proposed mitiga tion measure was reduced by 13% comparing that by the current design.
