jaue2021-077: Utilization of virtual energy storage based on time-of-use tariffs

Abstract

With the share of renewable energy generation increasing year by year, demand-side flexibility resources become
more important. In this article, two metrics are defined to illustrate the valley-filling capacity and peak regulation
capacity of building virtual energy storage in terms of vally-filling power (Pvally-filling) and peak-shaving power (Ppeakshaving),
respectively. The article uses the building energy simulation software EnergyPlus to simulate a three-story
office building and quantifies the available capacity of the building's virtual energy storage by setting schedules to
realize the utilization of the building's virtual energy storage. The electricity consumption and electricity bill
reduction after considering the implementation of the building virtual energy storage strategy are also calculated
based on the time-of-use tariff setting schedule. The simulation results show that the demand response event of
VES1 is consistent with the first demand response event of VES2, where the valley-filling power is 23.62 kW and
the peak-shaving power is 17 kW. the second demand response event of VES2 has a valley-filling power of 33.1
kW and a peak-shaving power of 23.4 kW. The economic index is 1.2% for VES1 and 2.8% for VES2. 2.8%.