Abstract
Some of the hydroelectric stations take a role to supply electric power to the thermal power stations as restarting power generation. Therefore, it is an important subject to continue the function of the hydroelectric station at the time of an earthquake occurrence. On the other hand, if the facilities of the lower stream of a regulating reservoir are safe in earthquake disaster, by using storage water of a regulating reservoir, we can generate electricity for a while. That is, a regulating reservoir has a role of buffer effect, then it can play an important role in supplying electric power to the thermal power stations. In this paper, we proposed the evaluation method of the system reliability and restoration curve for the hydroelectric station with buffer effect of a regulating reservoir. In evaluation, a damage correlation of components is considered. To evaluate the performance of method, it is applied to an actual hydroelectric station, and buffer effect of a regulating reservoir and the influence of the damage correlation are discussed.
