地質構造から見た北海道ブラックアウト
概要
The present paper explains that the southwest region of the central Hokkaido has a geological structure of causing M6.7 earthquake on September 6, 2018, and multiple short circuits of jumper lines at transmission line towers near the epicenter, which caused the shutdowns of main hydropower units (370MW), were fatal to prevent the blackout. This means that a large-scale hydropower units with reliable capability of automatic frequency control are always required in case of a large-scale shutdown of thermal power units. The lesson is the dispersibility of large-scale power units and main transmission lines.
