再エネ電源導入拡大・電力需要減少下における費用便益分析・ロバスト性評価に基づく設備増強・縮小の両面を考慮した送電系統計画

抄録

It is expected that future power demand in Japan may decrease because of depopulation. In such case, it may be better to remove some transmission facilities to improve the utilization of remaining transmission network. At the same time, further penetration of renewable generation in the future makes it necessary to reinforce transmission network. Therefore, for the planning of future transmission network, planning method is necessary, which can satisfy simultaneously these requirements of network reduction and network expansion. This paper proposes a novel transmission network planning method considering both the expansion and the reduction of transmission lines. The proposed method utilizes a stochastic planning method to determine the investment and removal of transmission lines. Cost-benefit analysis and robustness evaluation are utilized to evaluate the obtained plans. The effectiveness of the proposed method is shown by a numerical example.