Solar consumption and overproduction

[Geronimo]

good evening everyone
I have a question that has been bothering me for a few weeks
I have for some time a solar tracker or throne a PV panel of 195wc 24v.
The panel is connected to this inverter
http://www.aiger.fr/fr/onduleurs-inject ... e-22_60vdc

My question is the following
during a sunny day, what happens if my consumption is much lower than the production of the panel?
hypotheses :
- nothing
- the meter will detect it but what?
- the inverter will be damaged?
in short, I do not know
In your opinion
thank you in advance

[Forhorse]

nothing, you give the surplus to your energy supplier (EDF if in France)

[bamboo]

Hello,
In any case, the production will come out at EDF.
By cons, what happens at the counter depends on his techno:
- If it is a rotating disc, it will turn upside down and the index will decrease. This is generally not detectable by EDF because the production between 2 recorded should be lower than your consumption.
- If it's a recent counter, it will not count the outgoing kwh.
It will only count the consumptions that you can not produce.

ATTENTION: small point on the regulation. This is not exhaustive (I am not a specialist), but there is one thing that is certain: it is not allowed to connect any inverter on the network.
It must at least meet a standard (VDE 126) which makes it cut off automatically and in a given time in many cases of use (as for example if EDF intervenes on the line)

[Remundo]

Indeed, it requires a system that stops the inverter as soon as the phase of the network disappears.

It is also good for the inhabitants, believing to have disjointed while their inverter injects ... in their fingers.

[Geronimo]

Thank you for your answers
Actually my UPS is equipped with a system that when the network dijoncte is safe and no longer injects the current in the network
I asked myself this question because since the purchase of my inverter he has already replaced me 2 once because it was no longer working.
So I'd rather check everything

[Forhorse]

Since this is a cheap "made in RPC" UPS, well, no wonder it breaks.
The installation / use is probably for nothing, it is rather the design / quality of manufacture that is involved.

[elephant]

It's weird, in the ad you put us in link, it is simply mentioned "CE certification", certification which is sometimes simply the subject of a statement by the manufacturer.

You'd do well to REQUEST a copy of the VDE 026-1-1 certification to the vendor of the gadget.
Otherwise, given the modest price of the machine and for your peace of mind and the salvation of your soul, I have only one tip to give you: bazarde!

The problem is not to be sure that it stops producing when the sector disappears, but to be COVERED BY AN OFFICIAL DOCUMENT.
You should also have your installation certified by an approved organization for the same reason.

In Belgium, the authorization to connect to the network is subject to these 2 conditions.

Your civil and criminal responsibilities are engaged!

[Forhorse]

If you have your installation certified for 250Wc, it is not ready to be profitable this installation!


Sutout that, in France in any case, since nobody will want to get wet because this kind of installation is still "anecdotal" suddenly nobody will be held responsible.
So two possible answers: "It is not our responsibility" or "It does not conform"

I agree, must respect the laws, standards, coughing ... but sometimes it's ... complicated!

Especially that, without wanting to defend the installations made anyhow with non certified material, a network injection inverter it has needs network to operate, that's how it is the network that provides the operating frequency, it can not manufacture it itself.
so, even without being VDE stuff, a trick built according to the standard pattern (I doubt that the Chinese decide to reinvent the wheel to make this kind of cheap product) will necessarily stop in case of power failure.

Then, in case of intervention on the network it is either:
- By agents authorized to work under tension, on a presumed network under tension, so our Chinese UPS has nothing to do with history
- Under on a network recorded and thus grounded and in short circuit after a VAT (verification of absence of tension). If ever I do not know what miracle the inverter decided not to stop and that by some miracle I managed to maintain a dangerous voltage on the said network in view of the impedance of it, the consignor would be aware of this.
So, possibly a little problem with EDF, but no death.
But then, still thanks to our miracle, there is a death (or a wounded) because of this inverter because the consignment was not done correctly, the investigation would point above all a non-respect of the rules and procedures.
I doubt that the gentleman who plugged a Chinese UPS into a socket at home could be criminally responsible for this death (or his lawyer is really a ball)

For me, this VDE standard story is mostly to piss off and protect a business. The security of the agents intervening on the network did not wait for this norm.
Accidental power-ups and induced voltages have not waited for photovoltaics to exist.

[elephant]

I will have warned you.

Let us not forget that the reception by an approved organization concerns: type of cable used for the descent (anti UV, double insulation), presence of circuit breakers where it is necessary, quality and conformity of the grounding, conformity of the box and the used cables.

Everything is a boundary problem.

[Geronimo]

Bonjour à tous
this is a small subject that arouses many passions.
I understand the risks and limitations of this system.
But then I wonder about the fact that we find more and more "self-consumption kit" on the net and nowhere are all its elements listed.