Going on from previous tutorial , into following rows I'll define the modelling of ESS component I used:

(A working model of  EMS Online Simulator is available  every day from 16.00 to 18.00 UTC)

ESS Model:

  •  CAPABILITY and Signs:
    • circular 1MVA (no overload)
    • P+ = Discharge battery
    • P- = charge battery
    • Q+ = reactive power injection into the grid
    • Q- = reactive power absorption from the grid

 Capability

 


  • BATTERY:
    • Lithium base battery, nominal Energy=1,2 [MWh], CP rate=1;
    • Vcell = 2.8 to 4.2 [Vdc]
    • Thermal de-rating: not simulated
    • Power limit de-rating in case of SOC>95% or SOC<5% (linear)
    • Efficiency: load indipendent (defined into source code)
    • SOH (State Of Health) : not simulated
    • SOC (State Of Charge) calculation: interpolation (Catmull-Rom spline) based on following SOC-V diagram

SOC V

Eh V


  • PCS:
    • 2-state converter
    • V (MV side) = 15 [kV] AC
    • V (LV side) = 550 [V] AC
    • V (DC side) = battery dipendent
    • Estimated self-consumption: 2kW
    • Regulating point : MV side
    • Efficiency: load indipendent (defined into source code)

 

to be continue on next tutorial...