Capacity configuration of battery energy storage system

Battery energy storage system (BESS) is one of the important solutions to improve the accommodation of large-scale grid connected photovoltaic (PV) generation and increase its operation economy.

The minimum and maximum rated energy capacities of each type of batteries are 100 kWh and 500 kWh, respectively. Table 2. The parameters of batteries. In this case study, one day is equally divided into 24 time intervals. The time horizon of the system is four years, and there are 360 operating days in each year.

sive jurisdiction.—2. Utility-scale BESS system description— Figure 2.Main circuit of a BESSBattery storage systems are emerging as one of the potential solutions to increase power system flexibility in the presence of variable energy resources, suc

This paper proposes a BESS capacity configuration model for PV generation systems which takes BESS's ability to (dis)charge exceeds its rated power into account. The best charge-rate and power & energy capacity of BESS are optimized by particle swarm optimization (PSO) algorithm.

Through an analysis of the annual output statistics of PV power station in the northwest of China, the results show that when considering the high charge-rate of BESS, the optimal BESS capacity configuration rises and comprehensive income of the PV-BESS system will increase. Content may be subject to copyright.

Besides, for the optimal design of the BESS with multiple types of batteries in a HPS, the battery capacity degradation characteristics are usually ignored because of the huge data related to the power supply side and power demand side being handled in mixed integer linear programming (MILP) problems at a large scale .