Abstract
To reduce the energy capacity and power capacity of energy storage systems (ESSs) which is necessary to compensate power fluctuation in a power grid, the control of power that is used by electrical appliances on the demand side is considered. In this paper, the use of heat pump air conditioner for power fluctuation compensation is focused. The basic power consumption characteristics and processed heat characteristics of heat pump air conditioner which is measured by experiment using real machine is reported. Based on the measured characteristics, a simple model of heat pump is proposed. Using this heat pump model, simulations were carried out to analyse the amount of ESS's capacity that can be reduced by controlling the heat pump to compensate power fluctuations.