EV Aggregation Framework for Spatiotemporal Energy Shifting to Reduce Solar Energy Waste

Abstract

Kenshiro KATO †a) , Daichi WATARI †b) , Nonmembers, Ittetsu TANIGUCHI †c) , and Takao ONOYE †d) , Members SUMMARY Solar energy is an important energy resource for a sustainable society and is massively introduced these days. Household generally sells their excess solar energy by the reverse power flow, but the massive reverse power flow usually sacrifices the grid stability. In order to utilize renewable energy effectively and reduce solar energy waste, electric vehicles (EVs) takes an important role to fill in the spatiotemporal gap of solar energy. This paper proposes a novel EV aggregation framework for spatiotemporal shifting of solar energy without any reverse power flow. The proposed framework causes charging and discharging via an EV aggregator by intentionally changing the price, and the solar energy waste is expected to reduce by the energy trade. Simulation results show the proposed framework reduced the solar energy waste by 68%.