230V SOLAR Panels & HC2

[Lauri 6]

Hello,

have anyone experience of using solar panels together with Fibaro?

The goal is:

1) To measure production of the Solar panels

2) To measure whole house consumption

IF production > consumption, then heat water of heating system etc...

Solar panels what Im talking about use Piko Kostal inverter.

Have someone done something like this?

I understand that I have to read power from inverter, but what device can be used for this?

Lauri

[Dalle1985 16]

Have a look at this github project:

Please login or register to see this link.

It looks like you just need to access this address:

Please login or register to see this code.

And it will deliver you the data you need... Depending on the format it delivers data in, it might be able to pull it out using a bog standard http request. Otherwise you might need an intermediate server to translate the piko server response. If you access the mentioned address and make a dump of the source code for the response (just access the address in a browser, right click and then choose select source) we can have a look at the response and find out how it will integrate with HC2.

The other end of the comparison should just be a standard vonsumption monitor.

You do however need to be careful with a comparison scene like this. Because if it reads that you are producing more than you consume and then turn on the water heater, it might decide that your consumption is now exceeding production and then turn off the heater. So you might end up with a system that constantly cycles the heater on and off, which is bad for the inverter, the water heater, consumption AND the switch gear on the heater.

[Lauri 6]

Hello,

As I understand, then I can use this in local network?

Please login or register to see this code.

This solar plant belongs to one of my clients and I was asked to check, if this can be monitored from HC2 and might be good to use the power more efficiently.

I have access to this solar panel currently over kostal piko website where I can check history. For current data I need local access yes?

[Dalle1985 16]

Not necessarily, but I guess you need to contact Kostal to know if they have a direct feed. But if you put a script in between using a webserver, you could the entire source code for the page and then just extract the current production from the source code. But if the inverter control is hooked up to the same network as the hc2 that eill be much simpler as you will probably be able to extract the value directly on the hc2.

But ask your customer to input the above address (with the correct credentials) into his browser and see what it responds. If it is a simple json or even better, just a number, then it is very straight forward. If there is something else in it, it might be a bit more of a task to solve it.

[Quikdav 15]

Hi all

I use an Ecodevice from GCE Electronic (

Please login or register to see this link.

)

Else my inverter have only an RS232 output so I tried to get the data with an arduino board with RS232 shield + ethernet shield but it is on going

Regards

David