Research on Peak Load Shifting Based on Energy Storage and Air Conditioning Load in Power Grid

Abstract

In order to reduce the difference between peak load and off-peak load in summer and reduce the capacity of traditional energy storage system, an optimization strategy based on the coordinated control of battery energy storage system and air conditioning load was considered. Firstly, the control strategy of energy storage system based on threshold method considering electric storage capacity is proposed, and the dynamic changing process of air conditioning system setting temperature value is established to change the electric power of air conditioning system, that is, the virtual energy storage charging and discharging process of air conditioning system, the strategy of direct reduction and early charging of air-conditioning system are proposed. Secondly, the evaluation index of peak load cutting and valley filling is established, which emphasizes the local key of peak load and valley value. Finally, based on the theoretical analysis, taking a typical daily load forecasting curve of a commercial park as an example, the optimization strategy of coordinated control of battery energy storage system and air conditioning load is compared and analysed to verify its feasibility, it provides a basis for the application of battery energy storage system and air conditioning load in peak shaving and valley filling.