- In a previous question, I asked about the callback function in the Energyplus-API and how to simulate every time-step (https://unmethours.com/question/58313/how-can-i-simulate-just-one-time-step-dt-60s-with-the-e-api/)
- Now we want to control with an external python script the heat-load in Watt [W], which is sent into the Thermal Zone. But with the EnergyManagementSystem (EMS), you can only control and actuate the thermostat setpoints, but there is no actuation for the thermal loads
- In our previous simulation we defined a ElectricEquipment Object, with a thermal Load of 10000 Watt, and we controlled it with the ExternalInterface and the FMU.
ElectricEquipment,
Fake_HVAC, !- Name
Thermal Zone 1, !- Zone or ZoneList Name
HVAC_SetTable, !- Schedule Name
EquipmentLevel, !- Design Level Calculation Method
10000, !- Design Level
, !- Watts per Zone Floor Area
, !- Watts per Person
0, !- Fraction Latent
1, !- Fraction Radiant
0, !- Fraction Lost
Baseboard Heat; !- EndUse Subcategoryote
ExternalInterface:FunctionalMockupUnitExport:To:Schedule,
HVAC_SetTable, !- Schedule Name
Any Number, !- Schedule Type Limits Names
HVAC_setter, !- FMU Variable Name
0; !- Initial Value
My question is now, how i can use this approach for my simulation with the Energyplus-API? Because i can only use the function set_actuator_value(actuator_handle: int, actuator_value: ctypes.c_double), I can only use actuators from the EMS, but our approach is not connected to EMS?
It also could be, that our approach is just realizable with the ExternalInterface and the FMU. Then the current API-version is not useful for controlling thermal loads. Or should we define a ElectricBaseboard with EMS and calculate the Thermal Loads with the temperatures with set every time step?
I know it is a difficult question, but the API is a new feature of Energyplus, and we want to simulate a big city with electrical loads, heat pumps, electric grids and the domestic houses. So the calculations with the FMU are very expensive and need a lot of time. This is why we want to use the API. Thank you in advance :)
