Abstract:With the rapid pace of economic development, electric power consumption of home users is increasing year by year, which also accounts for a big part in total social power consumption.Hence, it is significant to conduct researches on optimal control of different types of household loads, so that electricity expense of home users can be reduced.In this paper, a control strategy of household energy efficiency management system is proposed, and mathematical models of four different types of household loads are established, including adjustable loads, transferrable loads, interruptible loads and reducible loads.Meanwhile, charging and discharging power model and capacity model of battery energy storage are formulated respectively, considering its life cycle.And optimal control of demand response resources are carried out based on time-of-use price and distributed roof photovoltaic generation.Finally, a numerical example is studied, which demonstrates that the electricity expense of a home user can be reduced remarkably through the proposed optimal control strategy, and the utilization of the distributed PV generation can be improved.