By operating these storage systems using the coordinated control strategy, the maximum peak load can be reduced by 44.9%. The rise in peak load reduction increases linearly with small storage capacities, whereas saturation behavior can be observed above 800 kWh. Linear programming optimization tool for energy storage systems
The case study involves three charging parks with various sizes of coupled storage systems in a test grid in order to apply the developed method. By operating these storage systems using the coordinated control strategy, the maximum peak load can be reduced by 44.9%.
Energy storage systems providing primary reserve and peak shaving in small isolated power systems: an economic assessment Int. J. Electr. Power Energy Syst., 53 ( 2013), pp. 675 - 683, 10.1016/j.ijepes.2013.05.046
To improve the capability of the peaking load shaving and the power regulation quality, battery energy storage systems (BESS) can be used to cooperate power units to satisfy the multi-objective regulation needs.
In this strategy, part of the power commands are assigned to the energy storage system through fuzzy control, so as to establish the primary frequency modulation scheduling module of the thermal power unit coupling energy storage system, which can ensure the power generation revenue of thermal power units.
The dispatching department calls it for free. When the output of thermal power unit is between (1 − k) Pthe and 0.5 Pthe, the thermal power unit has the ability for peak shaving. At this time, there is no need to charge the energy storage system for peak shaving. To avoid deep discharge in energy storage system, SOCmin is set to 20%.