Optimal Home Energy Management With Distributed Generation and Energy Storage Systems

The development of the smart grid promotes the rapid development of distributed generation (DG), while the intermittent nature of DG and the growing demand for electricity make it difficult for the grid to maintain the reliability and stability of the grid. Moreover, the time interval between peak demand of electricity usually differs from the peak supply provided by DG, which creates a mismatch between supply and demand. An energy storage system (ESS) can be an effective solution to improve the self-consumption of electricity generated by DG. In this paper, an optimization strategy of household energy management based on DG and ESS is proposed, which makes full use of the rechargeable characteristics of ESS and EV to improve the economy and flexibility of the system in the case of uncertain output prediction of DG. The objective is to minimize the cost of electricity consumption and user comfort. The actual situation of the users is taken into account, as well as the integration of renewable energy, energy storage, demand response, and other new technologies in the smart grid. Finally, the effectiveness of the proposed model and algorithm is verified by multi-scenario analysis.