Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)- setup

Simulation Setup & Configurations

Author / organization: Zhichao Wu + T. Blank / KIT

Objective Function of Simulation:
Optimization of required battery for peak-shaving
 
Simulation Duration: --
 

Key Performacne Indicator:

  • KPI1 - ? peak: The maximum of the electric power required from the grid
  • KPI2 - E load: The total amount of electricity gets from the grid
  • KPI3 - ? pv feedin : The part of PV generated electricity which is fed in to the grid
  • KPI4 - ? ? pv selfconsume : The part of PV generated electricity which is self-consumed within the system

Initial Simulation State:

  • Batteries are empty (SOC=0)
  • All initial temperatures in the building are 21°C.

Stopping Criteria of Simulation:

  • Invalid battery state of charge calculation.

Start Point:

  • Battery size: ? batt =600 kWh

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Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)- short description

Short Description of simulation Results

  • Scenario 1:
    • Capacity of battery: 0 kWh
    • Objective function: E min=4.41×104 EUR/year
  • Scenario 2
    • Capacity of battery: 128 kWh (127.613)
    • Objective function: ? min= 4.40×104 EUR/year (4.3975)
  • Scenario 3
    • Capacity of battery: 129 kWh (129.389)
    • Objective function: ? min= 7.85×10 ^ 4 EUR/year (7.8540)

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)- input

Simulation Input

Test Data

  • Link to test data: Here
  • Storage of Data: SmILES data format

Test System Model used for Simulation:

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)- best practice

Nested Applications

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing) - long description

Results Description of Simulation -- KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing)

The objective function of scenario 1 is approximately monotonic increasing. The optimization converge to the minimum cost very fast. To evaluate the optimization result of the objective function, we also simulate the system with different battery capacity. The result of our sensitivity analysis is shown in Figure 2. Obviously the best solution is C batt =0.

There are 5 components in the objective function of scenario 1. The result of sensitivity analysis of Scenario 2 is shown in Figure 4. The optimized battery size should be between [0,400] kWh. Therefore, we optimized the objective function of Scenario 2 with 0 ≤ C batt ≤ 400 to accelerate the optimization. The process is shown as Figure 5.

Simulation Results of KIT.TC2.TS1 (Electrical Peak Shaving BESS Sizing) - long description 2

The result of sensitivity analysis of Scenario 3 is shown in Figure 6. The optimized battery size should be between [0,300] kWh. Therefore, we optimized the objective function of Scenario 3 with 0 ≤ C batt ≤ 300 to accelerate the optimization. The process is shown as Figure 7.