Enhancement request: Support for HomeWizard JSON

[bwbboot]

I am using Homewizard energy meters which provide a nice restful API and JSON energydata.

https://www.homewizard.com/de-at/
https://api-documentation.homewizard.com/docs/getting-started

The 1Phase meters are already supported:

[TEMPLATE0]
Username =
Password =
DigestAuth = False
Host=0.0.0.0
CUST_SN =
CUST_API_PATH= api/v1/data
CUST_POLLING = 2000
CUST_Total= total_power_export_kwh
CUST_Total_Mult = 1
CUST_Power= active_power_w
CUST_Power_Mult = -1
CUST_Voltage= active_voltage_v
CUST_Current= active_current_a
Phase=
DeviceInstance=
AcPosition=
Name=
Servicename=com.victronenergy.pvinverter

1-PHASE JSON Example
{"wifi_ssid":"xxx","wifi_strength":100,"total_power_import_kwh":23.268,"total_power_import_t1_kwh":23.268,"total_power_export_kwh":716.83,"total_power_export_t1_kwh":716.83,"active_power_w":-138.527,"active_power_l1_w":-138.527,"active_voltage_v":238.369,"active_current_a":0.605,"active_apparent_current_a":0.727,"active_reactive_current_a":0.403,"active_apparent_power_va":166.474,"active_reactive_power_var":92.317,"active_power_factor":0.832,"active_frequency_hz":50}

However it would be nice to see support for a 3PHASE config. With Homeward, data is delivered per phase. Currently there is no support for adding multiple fields to sum these values, or deliver values individually to dbus.

3-PHASE JSON Example:

{"wifi_ssid":"xxx","wifi_strength":70,"total_power_import_kwh":0.24,"total_power_import_t1_kwh":0.24,"total_power_export_kwh":1141.546,"total_power_export_t1_kwh":1141.546,"active_power_w":-237.204,"active_power_l1_w":-78.104,"active_power_l2_w":-79.524,"active_power_l3_w":-79.576,"active_voltage_l1_v":238.441,"active_voltage_l2_v":235.867,"active_voltage_l3_v":237.153,"active_current_a":1.002,"active_current_l1_a":0.329,"active_current_l2_a":0.334,"active_current_l3_a":0.34,"active_apparent_current_a":1.247,"active_apparent_current_l1_a":0.409,"active_apparent_current_l2_a":0.42,"active_apparent_current_l3_a":0.418,"active_reactive_current_a":0.742,"active_reactive_current_l1_a":0.243,"active_reactive_current_l2_a":0.255,"active_reactive_current_l3_a":0.244,"active_apparent_power_va":295.749,"active_apparent_power_l1_va":97.452,"active_apparent_power_l2_va":99.131,"active_apparent_power_l3_va":99.166,"active_reactive_power_var":-177.184,"active_reactive_power_l1_var":-57.925,"active_reactive_power_l2_var":-60.149,"active_reactive_power_l3_var":-59.109,"active_power_factor_l1":0.804,"active_power_factor_l2":0.795,"active_power_factor_l3":0.812,"active_frequency_hz":49.906}

Thanks!

[henne49]

it should be possible to also integrate the 3 Phase, use 3P under phase and use active_power_w
https://github.com/henne49/dbus-opendtu?tab=readme-ov-file#template-options

[bwbboot]

I have used 3P:

Username =
Password =
DigestAuth = False
Host=0.0.0.0
CUST_SN = xxxx
CUST_API_PATH= api/v1/data
CUST_POLLING = 2000
CUST_Total= total_power_export_kwh
CUST_Total_Mult = 1
CUST_Power= active_power_w
CUST_Power_Mult = -1
CUST_Voltage= active_voltage_l1_v
CUST_Current= active_current_l1_a
Phase=3P
DeviceInstance=42
AcPosition=1
Name= PV1 - Veranda
Servicename=com.victronenergy.pvinverter

but there is no data unless parameters below are included (which are delivered per phase)
CUST_Voltage= active_voltage_l1_v
CUST_Current= active_current_l1_a

And the code assumes a three-phase balanced voltage, where Homewizard API provides individual phase voltages.

# Single Phase Voltage = (3-Phase Voltage) / (sqrt(3))
# This formula assumes that the three-phase voltage is balanced and that
# the phase angles are 120 degrees apart
# sqrt(3) = 1.73205080757 <-- So we do not need to include Math Library
singlePhaseVoltage = voltage / 1.73205080757

Would love to see support for individual phase values on dbus.

[henne49]

I understand your request, but it does not make a huge difference. As the overall power realtime and longterm energy are still correct, even whatever you put into voltage and current. And that is the main use case.

You may submit a PR for the change and we can check to include it.