Innovenergy_trunk/doc/controller_tests/Optimize Self-Consumption -> Hold min SOC.md

# Optimize Self-Consumption -> Hold min SOC

Initial State: Optimize Self-Consumption
Target State: Hold min SOC

Test Procedure

1. The system is brought to the Optimize Self-Consumption state by setting Min SOC lower than the current SOC (min. 5% lower)
2. Min SOC should not be lower than 10%
3. A production deficit is simulated by setting Grid setpoint to a negative value (-2000W)
4. Wait until the SOC stabilizes slightly above Min SOC

Expected Outcome

• The system first discharges the battery with 2000W.
• Somewhere between Min SOC + 1% and Min SOC + 4% the system changes into the Hold min SOC state.
• Once in this state, discharging is continuously throttled until it reaches 0W somewhere between Min SOC + 0.1 % and Min SOC + 0.5 %
• The system then starts to charge with low power (<300W) in order to compensate for thermal energy loss.
• The SOC stabilizes between Min SOC and Min SOC + 0.5 %
• The SOC does not fluctuate by more than 0.1% once it has stabilized
• Charging power does not fluctuate by more than 250W once it has stabilized

Tested Outcome

The system reacted as expected and switched to Hold min SOC state once the SOC reached Min SOC + 4%. Once the state changed to
Hold min SOC, the discharging power is throttled for around 40 minutes, where it then reached 0W at Min SOC + 1 %. When stabilized
the system charges with low power (<75W) to compensate thermal losses. The fluctuations are within +/-50W range.