Seeking Advice on a Monitor Issue

[srysss]

Battery control logic

battery_soc = {config['bess_name']: 50.0 for config in pv_bess_config} # Initial SOC at 50%
time_step_hours = 0.5 # 30 minutes in hours
#dss.text("set stepsize=0.5h")
#dss.text("set mode=daily")
#dss.text("set number=1")
total_number=48
#for i in range(len(pv_data)):
for i in range(total_number):
print(f"\nTime step {i + 1}:")
for config in pv_bess_config:

    bess_name = config['bess_name']
    bus_name = config['bus_name']
    pv_power_kW = pv_data["pv"][i] * config['pv_kVA']  # Convert PV p.u. value to kW
    load_kw = load_data[config['load_name']][i] * config['load_kW']  # Convert Load p.u. value to kW
    net_power = pv_power_kW - load_kw

    max_charge_power = config['bess_kWRated']
    max_discharge_power = config['bess_kWRated']
    battery_capacity_kWh = config['bess_kWhRated']

    print(f"BUS {bus_name} - PV Power: {pv_power_kW} kW, Load: {load_kw} kW, Net Power: {net_power} kW")
    print(f"Initial SOC: {battery_soc[bess_name]}%")

    if net_power > 0:
        if battery_soc[bess_name] < 80.0:
            charge_power = min(net_power, max_charge_power)
            soc_increment = (charge_power * time_step_hours) / battery_capacity_kWh * 100
            battery_soc[bess_name] = min(battery_soc[bess_name] + soc_increment, 100.0)

            Original_SOC = dss.text(f"? storage.{bess_name}.%stored")
            print(f"dssOriginal SOC: {Original_SOC}")

            dss.text(f"Edit Storage.{bess_name} State=CHARGING kW={charge_power} %Charge={soc_increment} %stored={battery_soc[bess_name]}")

            new_SOC = dss.text(f"? storage.{bess_name}.%stored")
            print(f"dssNew SOC: {new_SOC}")
            print(f"Charging: {charge_power} kW, New SOC: {battery_soc[bess_name]}%")

        else:
            dss.text(f"Edit Storage.{bess_name} State=IDLING kW=0")
            print("Battery SOC too high, idling.")

    elif net_power < 0:
        if battery_soc[bess_name] > 20.0:
            discharge_power = min(abs(net_power), max_discharge_power)
            max_possible_discharge = (battery_soc[bess_name] - 20.0) / 100 * battery_capacity_kWh / time_step_hours
            discharge_power = min(discharge_power, max_possible_discharge)
            soc_decrement = (discharge_power * time_step_hours) / battery_capacity_kWh * 100
            battery_soc[bess_name] = max(battery_soc[bess_name] - soc_decrement, 20.0)

            Original_SOC = dss.text(f"? storage.{bess_name}.%stored")
            print(f"dssOriginal SOC: {Original_SOC}")
            dss.text(f"Edit Storage.{bess_name} State=DISCHARGING kW={-discharge_power} %Discharge={soc_decrement} %stored={battery_soc[bess_name]}")
            new_SOC = dss.text(f"? storage.{bess_name}.%stored")
            print(f"dssNew SOC: {new_SOC}")
            print(f"Discharging: {discharge_power} kW, New SOC: {battery_soc[bess_name]}%")

        else:
            dss.text(f"Edit Storage.{bess_name} State=IDLING kW=0")
            print("Battery SOC too low, idling.")

    else:
        dss.text(f"Edit Storage.{bess_name} State=IDLING kW=0")
        print("Net power is zero, idling.")


    # Solve the circuit for the current configuration
    #dss.text("Solve")

# Set simulation parameters
#dss.text("set mode=daily")
#dss.text("set number=48")
# dss.text("set stepsize=0.5h")

dss.monitors.sample_all()



# Export Monitor data for the current step
for config in pv_bess_config:
    dss.text("Solve")
    dss.text(f"Export Monitors {config['pv_name']}_mon")
    dss.text(f"Export Monitors {config['load_name']}_mon")
    dss.text(f"Export Monitors {config['bess_name']}_mon")

I’m currently working on a simple battery control program using PyDSS. While the output results from the battery monitor seem normal, the results for both Load and PVSystem monitors show repetitive values. I’m wondering if this could be related to the fact that I used LoadShape to input power for these components (I tested the LoadShape using the following commands:dss.loadshapes.name = "LOAD1"
dss.text("plot loadshape object=LOAD1")
The results appeared to be correct, so the issue seems to only affect the monitor results).

Additionally, the monitored results do not initially display timestamps. To address this, I attempted to use the following commands:dss.text("set stepsize=0.5h")
dss.text("set mode=daily")
After doing so, the monitored results started including timestamps, but the Monitor_Storage data stopped updating (the values remained static).
IEEE13Nodeckt_Mon_load1_mon_1.csv
IEEE13Nodeckt_Mon_battery1_mon_1.csv

I would greatly appreciate any suggestions or insights on how to resolve these issues.

[PMeira]

I’m currently working on a simple battery control program using PyDSS.

We don't support that here, sorry. We develop and support the following Python packages: DSS-Python, OpenDSSDirect.py and AltDSS-Python.