Python Plugin: Solar Inverter via TCP Shine v2 protocol (Growatt, Gaia)

[devros]

hello, thanks
tried, but have this error (waiting for a connection and after 10 +/- seconds error)
im using script with sudo command

waiting for a connection
error setting server socket to listen mode
^CTraceback (most recent call last):
File "mobdus.py", line 1107, in <module>
time.sleep(2)

[devros]

hi found this,
it looks that Godwee is using same protocol to comunicate... (every 5 minutes, no open port) and its not modbus... weird

http://www.domoticz.com/forum/viewtopic.php?t=6714

[Ferno2000]

Hi I am very interested in what you are doing here, I myself used this construct here:

https://www.vromans.org/johan/software/sw_growatt.html

And managed to get it working, now just have to figure out how to get the data it generates into domoticz.
maybe going to the stuff on this site helps you getting on the right track.

[zoriander]

Hi I am very interested in what you are doing here, I myself used this construct here:

https://www.vromans.org/johan/software/sw_growatt.html

And managed to get it working, now just have to figure out how to get the data it generates into domoticz.
maybe going to the stuff on this site helps you getting on the right track.

I am trying to do the same, however I haven't gotten the perl script to work nicely. Did you do any configurations on the growatt?

[pwhooftman]

It has been quite a while since i have been thinkering with this. I'm using a similar approach to vromas for a few years now: the growatt stick is sending the data to my Synology NAS. My Sunology passes the traffic trough to the Growatt servers, but its also captures traffic to data files, which are broken down to energy produced etc, and collected into Domoticz. Domoticz sends it to PvOutput through the PVOutput plugin.

I have been logging the RS232 traffic and found the inverter is sending live data to the Growatt wifi stick continiously (actual power, energy produces that day, energy total, etc). Its the wifi stick that sends data to the Growatt Server every 5 minutes.

I really would like to gather live data (especially live actual power) so i can calculate energy consumption in my house real time, by substracting power return to the grid from the solar power produced, but i never succeeded firing commands to the wifi stick to get live values. I once managed to break down the serial stick and locate power values etc at certain locations in the string, but after rebooting the wifi stick, those locations changed again so i gave up.

I'm really interested if a solution comes up where traffic to Growatt servers remains intact but extracting live traffic is possible also.

[Ferno2000]

Hi I am very interested in what you are doing here, I myself used this construct here:

https://www.vromans.org/johan/software/sw_growatt.html

And managed to get it working, now just have to figure out how to get the data it generates into domoticz.
maybe going to the stuff on this site helps you getting on the right track.

I am trying to do the same, however I haven't gotten the perl script to work nicely. Did you do any configurations on the growatt?

Hi,

Yes, you have to configure the ip address of the host running the perl webserver made by Johan as the growatt server. The perlproxy will relay the info to the actual girowatt shine server after scraping the info to a DAT file.
There is a script included to convert the DAT file to a csv. I managed to create a rudimentary script that greps and awks the value a I need and send it to a influx DB.
I still have to do a lot of work on it but I have a start. The same approach could be used to trigger a virtual switch in domoticz.

[pgielen]

The last post in this thread is from 2017. DId someone ever finish this work? What is the best way, now in 2019, to capture data from the Growatt Wifi stick, use it in Domoticz and forward it (or not) to server.growatt.com?

[Tristan]

I still not have implemented a P1 meter (if that is possible) and the correction if the inverter goes down (no sun/manual switch onoff) and reset the today counter to 0...

But I get

Screen Shot 2019-08-25 at 10.54.57.jpg (199.47 KiB) Viewed 2794 times

https://github.com/Tristan79/Growatt-WiFi-Tools

note that the newer wifi adapters with the new protocol does not work...
and i do not implemented all the data points (since I got no second string of panels)

It's a total hack but it works for me...

https://www.domoticz.com/forum/viewtopic.php?t=28586

[sincze]

@Tristan, what is the idea behind the P1 meter, the goal you want to achieve?

I guess...by reading through the posts you want to create a realtime meter.

I have been logging the RS232 traffic and found the inverter is sending live data to the Growatt wifi stick continiously (actual power, energy produces that day, energy total, etc). Its the wifi stick that sends data to the Growatt Server every 5 minutes.

I really would like to gather live data (especially live actual power) so i can calculate energy consumption in my house real time, by substracting power return to the grid from the solar power produced, but i never succeeded firing commands to the wifi stick to get live values. I once managed to break down the serial stick and locate power values etc at certain locations in the string, but after rebooting the wifi stick, those locations changed again so i gave up.