A two-stage energy management strategy for multi-bus smart building integrating PV-storage system

Energy management of smart building integrating PV-storage system plays a key role in promoting energy conservation and economic operation. However, when applied to the multi-bus smart building, traditional energy management strategy (EMS) faces challenges such as difficulties in rule applicability or a large decision space due to the increased number of controllable devices. Therefore, a two-stage EMS for multi-bus smart building is proposed in this paper. The proposed method divides the physical topology of smart building into multiple energy-local area networks (E-LANs), whereby the energy management of smart building is achieved through the energy management of E-LANs. The energy management of each E-LAN is conducted by rolling horizon optimization in the first stage, then the transferred power between E-LANs is optimized in the second stage. Simulations are carried out on MATLAB/Simulink platform, results show that the proposed method reduces the extra transferred power between E-LANs to achieve the local consumption of renewable energy and better economy. Compared with EMS based on direct rolling horizon optimization, direct rolling horizon multi-objective optimization and rolling horizon optimization of E-LAN without power exchange optimization, the total operation cost of smart building of the proposed method in a scheduling period is reduced by 18.01 %, 14.72 % and 7.24 %.