The objective of this experiment is to study the steady-state operation of the microgrid. Real-time simulation results are shown in the laboratory panels.

Grid Connected Mode

Part 1

1. Open the Main panel with the default settings.
   • Does the main utility absorb or provide active power?
     Explain your observation.
   • Verify that the active power flow is balanced.
2. Use the button control for irradiation to set it to a value zero.
   What do you expect the PV output power to be?
3. Increase Load 1- Critical to its maximum value, then increase Load 2 to its maximum.
   Does the main grid utility provide or absorb power?
   Explain why?
4. Increase the demand response to its maximum value.
   Does the demand response have any effect on the total load demand and/or the power generation?
   Explain your observation.
5. Power flow 1: Increase Load 3 to 13 kW and save the power flow

Part 2

• Open the Main panel with the default settings.
• Increase solar irradiance to E = 1000 w/m².
  What do you expect the PVGS output power to be?
  Explain.
• Increase wind speed to 15 m/s.
  What is the output power of the WTGS?
  Explain your observation.
• BESS state 1: Decrease Load 3 to 3 kW.
  Save the power flow results.
  Explain the working state of the battery energy storage system in terms of charging/discharging.
• BESS state 2: Decrease Loads 1 and 2 to 4 kw and 6 kW, respectively.
  Save the power flow results.
  Explain the working state of the battery energy storage system in terms of charging/discharging?
• How do the BESS states 1 and 2 differ from another?
  Explain.

Islanded Operation Mode

• Open the Main panel with the default settings.
• Disconnect the microgrid from the main
• Power flow 2: Increase Load 1- Critical to its maximum value, then increase Load 2 to its maximum.
  Observe and save the power flow results.
• Power flow 3: Increase the demand response to its maximum value.
  Save the power flow results.
  How do the Power flows 2 and 3 differ?
  Explain.
• Power flow 4: Increase Load 3 to 13 kW, then decrease the solar irradiance to zero. Save the power flow results.
  Compare the results to those of Power flow 1.
• Decrease the demand response to zero.
• Power flow 5: Increase Load 3 to its maximum value
  Save the power flow results.
  What do you observe?
  Explain your observation.
• Power flow 6: Increase the wind speed to 15 m/s.
• Save the power flow results.
  Compare Power flow 5 and Power flow 6.
  Explain the differences.