A Coordinated Control Strategy and Implementation of Household Microgrid Based on Time-of-Use Electricity Price and Demand Response

Household microgrid is an important part and main construction content of smart distribution network. With continuous development of smart grid, household electricity consumption will participate in the optimal dispatching operation of power grid. To fit in with such a need of the society, firstly, taking the household schedulable load, the working state of electric vehicle and household batteries as constraint conditions and taking the lowest electricity consumption cost and the flatness of the net load curve as the optimization objective, a optimal dispatching model for household microgrid system was established. Secondly, combining with the working load characteristics of air conditioning and water heater, a coordinated control strategy for household microgrid, which was based on time-of-use electricity price and demand response was proposed. Taking a typical household microgrid for a family located at a certain residential area in Beijing for example, analysis results show that adopting the household microgrid system based on the proposed optimal dispatching model the optimal scheduling and control of distributed PV generation, household batteries, electric vehicle and home load equipments can be implemented.