Hi,
I have a Flukso v2b and am running Consumption and Solar generation through din rails. I've configured Sensor 2 and 3 on the Flukso as pulse outputs.
My Consumption statistics were reporting correctly, however yesterday when my solar installation was completed, and I turned the inverter on, I noticed that the consumption and generation graphs were almost identical. At the end of the day, when the solar generation stopped, the graph was correctly displaying zero generation and appeared to accurately display consumption at night.
This morning, again when the sun came up and generation started, the graphs have again lined up. Has anyone come across this before? Attached is screenshots from the Dash and from pvoutput.
I updated firmware to the current level, but that hasn't helped.
Thanks for your advice.
Tristan
| Attachment | Size |
|---|---|
| flukso_data_incorrect_2.JPG | 46.72 KB |
| flukso_data_incorrect.JPG | 97.81 KB |
| back_to_normal.JPG | 60.73 KB |
| back_to_normal_2.JPG | 41.91 KB |
| boil_water.JPG | 19.66 KB |
Did you try turning it off and on again?
Hey mate,
Yep I did a firmware update and the Flukso restarted at that time.
Tristan
How are the pulse meters wired? --> https://energyhacks.wordpress.com/2014/07/10/wire-to-measure/
This sounds like an issue with the actual placing of the pulse meters in the first place; check what the pulse meters show and which direction of current flow they indicate.
Geb,
I'm not sure on the wiring - the electrician who did the solar installation also wired the din rails.
I checked my daily production on the inverter itself, and it is reflected within 0.1kWh on pvoutput. Now that its dark and generation has stopped, the consumption graph has returned to reporting correctly (see new attachments on the original post).
Is this consistent with incorrect wiring? If I was in the situation as per the linked article, wouldn't the value being output from the Flukso for generation be more than 0.1kWh?
Thanks again.
Tristan
*more that 0.1kWh out that should read.
Tristan, I think your solar guy wired the pulse meter in the wrong place? It needs to be immediately after the inverter output and before and joins to the grid or your household load .. I think he connected it after the join ... show him the diagram from Marcus's link above and ask if he wired it like that
No, ignore my post above - it must be wired properly because it works fine before 9:10am in your attached photos and after then both mirror each other - if it was wired wrong then the graph would be wrong all the time ..
Unless ... do you have a Immersun or similar device ?
VK2HIM,
Yeah that's the strange part... the two meters seem to work OK side by side for about 3 hours in the morning (between 6am and 9am), and then they match up.
I don't have any other devices... just the inverter, din rail for consumption, din rail for generation and the flukso.
As you know, there isn't much configuration on the flukso... and the fact that they seem to work fine independent of each other suggests to me that I've set up the flukso correctly.
Frustrating :)
Tristan
Easy way to tell - what do the pulse meters display on their outputs and how do they compare to Flukso?
You have higher consumption in the morning and the evening (as all working people off to work), correct?
What is the effect if you switch on a high load, for example a water boiler? Does the graph follow still? Do you "see" the e.g. 2kW taken?
I still suspect that the consumption meter is the "root cause" as the Fluksometer does not recognize direction of current flow (so actual feed into the grid is read the same as consumption - what it is not, of course) - but this you can only change by a "real consumption meter" in the distinct consumption path (as sketched in the diagram)
The meter is showing the same value for generation as the Flukso. The meter for consumption seems to be about 25% higher than the output on the Flukso.
Geb - yep definitely morning and evening consumption. When the generation is not running, either at night or before I switched on the solar, the consumption graph seems to be accurate. Airconditioning/heating, appliances etc noticeably move the graph.
About 10 mins ago I tested by boiling some water (it's 9:43pm now) and you can see the spike in the new attached image.
"The meter is showing the same value for generation as the Flukso. " - sure, otherwise installation on the Flukso were just wrong. Again, is the value of the meter reasonable in the first place? How do consumption meter and solar meter react when producing and consuming? What do you mean by "switching the inverter on" (if it is off then natuarally the consumption meter will show only consumption as nothing else feeds in).
Go along the different paths and check their feasibility? I still believe that the direction of current flow is not reflected, thus the "consumption meter" is in the path of both consumption AND production. And tiny excerpts of graph w/o scaling show just nothing exploitable...
Rgds, Markus (sic)
And to underline my assumption of the "wrong" wiring of the consumption meter: 05:30 - Consumption 4382W, Generation 4502; Delta 120W (which I assume to be your basic load when not at home and just the always-on things running - consistent throughout the day)
Does the consumption meter indicate direction of flow? Has it a back-flow lock? Consult you sparky!
Maybe I should consult the sparky ;)
Thanks for your advice. I'll go back to the installers and see what they think.
Now your graph looks correct, wiring indeed?! Let us participate ;-)
I agree with the clamps in the wrong area. I have wired in the past incorrectly and had the same issue as your pix.
One pulse meter should be in the house consumption wire (between junction of solar and fuses) other on in the wire from solar before the junction.
PM fuses/CB
-From street-------X------------------OO---------------------)))))))(((((((---------------House >>>
I
I ------------------OO---------------------)))((------------------------Solar <<<
PM
PM = Pulse meter (OO)
))(( Fuses /CB (Circuit breaker
I
X = junction
Didn't come out same way as preview :(
Hey guys,
Yep thanks very much. Electrician came back and found the mistake quickly and fixed it up.
Cheers,
Tristan.