Python Plugin: GoodWe solar inverter via SEMS API

[dylian]

Seeing as the current default Domoticz implementation does not work anymore I decided to try and develop my own plugin for GoodWe inverters. Following the requests made by their website (http://semsportal.com) and reading trough the API documentation I conjured up the following Python Plugin:


EDIT: As dylian94 does not maintain this plugin anymore please use the maintained copy/fork mention below Check the instructions on that repository
https://github.com/JanJaapKo/domoticz-GoodWeSEMS


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[sincze]

Thanks for sharing! Let me give it a SPIN

[sincze]

Works like a charm.

Goodwe.JPG (46.33 KiB) Viewed 15675 times

And already added to official plugins page! (https://www.domoticz.com/wiki/Plugins)

[henkwel]

Hi,

Thanks for you work. However I cant seem to it running here on V4.11214.

When trying to add the hardware I get an error saying problem adding hardware. Do you have any idea what might be wrong?

[Wiljums]

Hi, does it read the data per string? Ideally I would like to read all the data fields you can export manually through semsportal:
Time
WorkMode
Vpv1(V)
Vpv2(V)
Ipv1(A)
Ipv2(A)
Vac1(V)
Vac2(V)
Vac3(V)
Iac1(A)
Iac2(A)
Iac3(A)
Fac1(Hz)
Fac2(Hz)
Fac3(Hz)
Pac(W)
Temperature(℃)
Daily Generation(kWh)
Total Generation(kWh)
HTotal(Hrs)
RSSI(%)

[Wiljums]

Is it possible to send the data to InfluxDB with this plugin?

[sincze]

Is it possible to send the data to InfluxDB with this plugin?

At the moment I guess not, however if the devices are included in Domoticz you could use the influxDB push functionality of domoticz itself to create nice dataflow and (grafana) graphs.

[Koploper]

Works for me too, thanks!

[frandevelop]

goodwe-domoticz-1.png

Hi

Where is this configuration?
In hardware only shows:
Location:
UserName:

Not new devices found and logs show this error:
Error: GoodweAPI: Error getting http user data!

Thanks

[ricvee]

Hi,

I can only select: Goodwe solar inverter via Web API
not the GoodWe inverter (via SEMS portal)
What went wrong?

[JanJaap]

Hi,

Nice plugin, works great once I worked around a limitation:
password doesn't work for special characters (I had %, &, @ in the pwd). Will see if I can find a fix for that.

[Nodri]

Hi,

I can only select: Goodwe solar inverter via Web API
not the GoodWe inverter (via SEMS portal)
What went wrong?

Same here, also i don't get the watt "tile" so can't see how much we're making.
What am i doing wrong??

[ricvee]

Hi Nodri,

I fixed this by updating python:
sudo apt-get install python3.4 libpython3.4 python3.4-dev
Now it is working fine!

[Hcroij]

Just implemented it this morning and looks fine, however the log shows errors.

2019-10-31 11:30:04.504 Error: (Zonnepanelen): Async Secure Read Exception: 1, stream truncated

This happens every few minutes anyone an idea where this is coming from?

Regards
Henk

[Hcroij]

After some "Googling" found out it has prob to do with "HTTPS://", maybe this helps to solve the problem.


Added later...
Looks that i have solved the problem.
Reinstalled your plugin and it worked without the error.
So I tried to find out what was the difference with the first time.
I do not know if this is the cause or the solution, but think I need to mention it.

During the hardware install the question comes "Global, Europe, or ....." I installed it the first time with "Global"and ofcourse my credentials.
After saving, it did not work oke, so I went back and changed it "Global"to "Europe" (saved again, and the error occurred.

The second time I installed it, I directly set the hardware to "Europe" and I did not get an error message anymore.
I do not know if the above helps but you never know.

Regards
Henk.

[Hcroij]

Tried to figure out myself but (ofcourse) could not find the solution.

Although the "Devices" (Apparaten) tab shows the total generation of my panels over the years (12475.100kWh) the representation of it shows only the daily generation.
Hope the pictures explain.

I tried to play around with the line :
Devices[self.baseDeviceIndex + 4].Update(nValue=0, sValue=str(inverter["output_power"]) + ";" + str(inverter["etotal"] * 1000))
In the python script, but (I cleared cache in the browser) this did not work for me.
I did some logging on it and found the following line in the log:

2019-11-01 12:27:47.073 (Totaal gegenereerd Paneel) Updating device from 0:'382W;12475200.0' to have values 0:'392W;12475300.0'.

So looking at this, the update is correct but the "Domotics switch" shows only the first value (382W) and disregarding the second value (12475300)


With regards
Henk

[JanJaap]

Hi Henk,

The domoticz plug shows you the actual power (in Watt) not the total. You will see totals when you click the 'log' button. The control will show the sum of the day only indeed. If you want a cumulative, you can export the data in the log section.

I'm working on an update of the plugin, can see if I can fit a total in as well (data does not seem to be reported via the SEMS API so may need to do some adding in the plugin.

[Hcroij]

Hallo JanJaap

Would be terriffic if this would work.
My knowledge is not enough to extrat the value from the log.
My max is to fiddel around in a script and change something through trial en error.
So would be great if you could accomplisch this.

[uermend]

hi,

You probably need to upgrade to get the screen listed below. I have it running on the lates beta version V4.11468.

regards

[Hcroij]

Wich screen?
By the way, did an ./updatebeta so I am on version 4.11474.
Even after browser refresh and clearing cache the problem stays.
String has 2 valeus but only representing one.