QUANTITATIVE EVALUATION OF MEASURES TO SECURE FLEXIBILITY USING INTERCONNECTED LINES IN JAPAN’S NINE INTERCONNECTED AREAS

Abstract

A critical issue is how to secure the ability to adjust in the future due to the large-scale introduction of renewable energy. Supply-side and demand-side measures must be maximized to ensure flexibility in the future. In addition, it is necessary to make effective use of interconnection lines to ensure controllability. There are two ways to ensure flexibility using interconnection lines: strengthening interconnection lines and securing margins for interconnection lines in day-ahead planning for flexibility. Therefore, in this study, a simulation model that simulates unit commitment and economic dispatching control is used to quantitatively evaluate the policy for securing flexibility using interconnection lines. The analysis covers 8,760 hours per year in nine interconnected areas in Japan in the future.