Hey Everyone.

Hardware: Deye 8kva Inverter
Software: Solar Assistant, Home Assistant

I've had a new install done and notice that I've been sending power back down the grid. I'm using Solar Assistant and get and set inverter values in Home Assistant via MQTT. When I realised what was happening, I tried to the Solar export when battery full value via MQTT.

You can see the change in values since doing that on Thursday night.

 

 

The only Grid values I see are negative ones if I allow solar selling.

 

 

And it appears as if the true grid values are now being read as the non-essential values albeit inverted.

 

 

Does anyone have any clue what I've done here? I have tried to restore the settings and reboot the inverter to no avail.

 

Thank you for your time. Sincerely, I appreciate any assistance with this.

Edited December 5, 20223 yr by name
Correct Images

3 minutes ago, name said:

Hey Everyone.

Hardware: Deye 8kva Inverter
Software: Solar Assistant, Home Assistant

I've had a new install done and notice that I've been sending power back down the grid. I'm using Solar Assistant and get and set inverter values in Home Assistant via MQTT. When I realised what was happening, I tried to the Solar export when battery full value via MQTT.

You can see the change in values since doing that on Thursday night.

 

 

The only Grid values I see are negative ones if I allow solar selling.

 

And it appears as if the true grid values are now being read as the non-essential values albeit inverted.

 

Does anyone have any clue what I've done here? I have tried to restore the settings and reboot the inverter to no avail.

 

Thank you for your time. Sincerely, I appreciate any assistance with this.

Links to image no show

6 hours ago, Scorp007 said:

Links to image no show

What a fail. Thank you for the heads-up.

Please let me know if they're visible now.

Edited December 5, 20223 yr by name
Updated remark to suit the edits above.

1 hour ago, name said:

What a fail. Thank you for the heads-up.

Please let me know if they're visible now.

All good now.

I've finally found it. Thanks to the response in this post.

It appears the integration into Solar Assistant set Limit to Load to false (unchecked).

I needed to check this again and all is reporting correctly.

Warning : I'm just a novice amateur owner, so take my opinions from when they come...

So, I'm using SunSynk. which means some of the config (software) looks different, but I understand that the hardware and capabilities are much the same as the Deye.

Note: I'm not familiar with the bottom-right graph you have - I've not seen one like that on the SunSynk - so it's not clear to me what it means exactly. But it does seem odd that it shows negative values. It might be telling you that you've already done what I will suggest below...

For starters, I will assume you have the CT installed where it should be... And thus, you'll have one DB (non-essential load) on the Grid side, between the CT and the Inverter, with things like geyser and stove/oven, and another DB (essential load) on the Load side with all your household load (lights, plugs, etc.)

If you set "Limit to Load", then you'll only use your inverter power (battery and/or PV) for the "Load", which is also described as essential load. This will NOT provide any power to your non-essential load items. If that's what you want - then you're all good.

However, since you clearly have more production than you are using (on sunny days), you might want to allow the Inverter to send some power to the non-essential load. To do this you must set "Limit to load" OFF, but you must set "Zero Export" ON.  (I don't know what "Zero Export" might be called on the Deye Inverter.)

When I run the SunSynk this way, it then reports the non-essential load as part of the load on the graphs. It also means that I get to use some of the free energy (PV) to supply my geyser.  Suddenly a timer switch on the geyser starts to make sense... Let the geyser come on during the day, once your batteries are full and you still have good sunlight - heat the geyser and still recharge the batteries afterward.

Edited December 6, 20223 yr by Patrick OReilly

Thank you for the response, @Patrick OReilly.

The graphs come from the Raspbery Pi connected to my inverter running an application called Solar Assistant. The terminology that you're using is the same as what I've seen on the Deye inverter.

What you've mentioned here, makes me think that the CT isn't in the correct location - it was all done by the trusty installer. If I uncheck "Limit to Load", I end up with the odd readings and inverted non-essential usage.

Things are working for me like this but I realise now that it's not the ideal setup. As things stand, I have good practices running with my setup regarding the high consumers. I have set up automations to turn the geyser on/off according to the day of the week and if I have excess solar production. The downside is that my oven runs directly from the grid and doesn't get supplemented by excess solar.

I appreciate your insight on this. I've learnt from it and it's helped me understand the set up better (I've struggled with the user manual).

 (I've struggled with the user manual).

Hmmm - yes, I've also found the manuals to be very verbose, but not very technically enlightening. But I'm an amateur, so perhaps I'm missing stuff that's obvious to those "in the know".
This Forum has been my best source for helping to understand stuff a bit.