Smart management system of customer's battery and heat pump water heater, considering the Japanese new rule for curtailment of PV output

摘要

In Japan, the installed capacity of Photovoltaic(PV) generation systems reached about 30GW in 2015, in which there would be surplus power in whole power system in light load season. In order to install the PV system without affecting stable operation of power system, the Japanese government set a new rule to restrict PV output when the surplus power occurred in whole power system. Authors has developed operation and planning method of customers' appliances for utilizing surplus power of PV at the customer's side. To apply the new rule to restrict PV output for the developed method, improvement of the developed operation and planning method is necessary. This paper develops the improved operation and planning method of customers' appliances considering the new rule for PV output restriction. The simulation analysis has been conducted to validate the developed method. Simulation results shows that proposed method can reduce the customer's electricity bill by 10-20%, restricted energy of PV output by 10-20% when the selling rate of PV output is 9.27yen/kWh, which shows validity of proposed method.