SolarPower

Solar Power

Balkonkraftwerk

My "Balkonkraftwerk" uses OpenDTU to query the rf data of the microinverter TSOL-M800 from TSUN (Hoymiles HM600 compatible).

Monitoring Setup

• http://OpenDTU1
• mqtt@job4 (mosquitto_sub -v -t 'OpenDTU1/#')
• job4:/etc/systemd/system/openDtu2Db@OpenDTU1.service (sudo systemctl status openDtu2Db@OpenDTU1.service, sudo journalctl -f -u openDtu2Db@OpenDTU1.service)
  • python -u /home/joachim/bin/openDtu2Db.py OpenDTU1 (prints to stdout)
• Influx database openDtu (influx -database openDtu -precision rfc3339 -execute "select * from string order by time desc limit 10")
• Grafana Source openDtu@InfluxDB
• Grafana Dashboard https://banzhaf.chickenkiller.com/grafana/d/_rNE2oO7k/stromverbrauch?orgId=1&refresh=10s&viewPanel=7

Troubleshooting

• Sometimes mqtt connection gets lost (see https://github.com/tbnobody/OpenDTU/issues/965)
  Go to http://opendtu1/settings/mqtt, hit "Save". Should fix it

Garagenkraftwerk

My "Garagenkraftwerk" uses Tasmota to query power data and control a fan via Nous power plugs

Monitoring Setup

• Fan http://nous1 (on after 2 min > 250 W, off after 6 min < 150 W by tasmogy.py)
• Power: http//nous2
• mqtt@job4 (mosquitto_sub -v -t '+/nous1/#' -t '+/nous2/#')
• job4:/etc/systemd/system/tasmogy.service (sudo systemctl status tasmogy.service, sudo journalctl -f -u tasmogy.service)
  • See my repo https://github.com/joba-1/Tasmogy
  • python -u /home/joachim/bin/tasmogy.py nous2 nous1 (prints to stdout)
• Influx database energies (influx -database energies -precision rfc3339 -execute "select * from energy order by time desc limit 10")
• Grafana Source energies@InfluxDB
• Grafana Dashboard https://banzhaf.chickenkiller.com/grafana/d/_rNE2oO7k/stromverbrauch?orgId=1&refresh=10s&editPanel=12
• Fan and Solar Plug can be controlled and monitored via Domoticz (using my Tasmoticz Gateway)

LiFePO-Island

My shed in the garden has LiFePO backeded island solar power

• Power route: Panel -> Esmart3 -> BMS -> 12V LiFePOs -> Inverter -> 220 V / 500 W continuous power (7 switchable output plugs)
• Control/Monitoring: The BMS and the ESmart3 report to an ESP32 via RS485 serial line.
• The ESP32 is behind a Tasmota port forwarding range extender http://nat2, reachable via http://nat2:8080
• The ESP32 runs my firmware https://github.com/joba-1/LiFePO_Island which posts data to influx
• Influx DB (influx --database LiFePO_Island --execute "show measurements" for all available data tables) e.g.:
  • ESmart3 charge and load status: influx -precision rfc3339 --database LiFePO_Island --execute 'select * from ChgSts order by time desc limit 10'
  • BMS cell voltages: influx -precision rfc3339 --database LiFePO_Island --execute 'select * from Cells order by time desc limit 10'
• Grafana Source LiFePO_Island@InfluxDB
• Grafana Dashboard https://banzhaf.chickenkiller.com/grafana/d/mYiP89N4z/lifepo_island?orgId=1
• Load can be switched via Domoticz (Dummy Hardware LiFePO_Island with virtual sensor LiFePO_Island_Load, type switch)
  • Switch script: /opt/domoticz/scripts/lua/script_device_LiFePO_Island_Load.lua
  • Status script: /opt/domoticz/scripts/lua/script_time_LiFePO_Island_Load.lua