Problem with power sharing

[hcapdevi]

I am used to using the power sharing function, but this time it is not working.

I define my sub arrays

I use the power sharing function (everything works fine)

I start the simulation, but the power sharing is not taken into account, and it is not saved after the simulation is done.

Is this a bug or a miss used of myself?

 

Thank you for your help ?

[dtarin]

The the auto button in power-sharing screen to balance Pnom ratios.

Edited August 10, 2022 by dtarin

[dtarin]

Select* the...

[hcapdevi]

I do normally select it (just not here on the screenshot), it has not effect unfortunately.

[Bruno Wittmer]

This looks indeed strange. The definitions are all correct, but it seems that the information was not propagated to the variant.

I have not seen this before, would it be possible to export this project and send it to support@pvsyst.com, so that we can check why this is happening?

[hcapdevi]

Yes of course, can you explain the procedure? 
What file do you need?

[taahxr]

I have been having the same issue. While doing the Power Sharing in the SYSTEM Tab, - all seems fine. But after running the simulation the PNOM reverts back to the "non-powering sharing" value.

See my screenshots below

From my experience, it seems to only happen when more than one inverter type is used.

Edited August 18, 2022 by taahxr

[hcapdevi]

"From my experience, it seems to only happen when more than one inverter type is used."

No, in my case, I'm using two 100KTL and the problème is the same. 

[Bruno Wittmer]

On 8/11/2022 at 11:25 AM, hcapdevi said:

Yes of course, can you explain the procedure? 
What file do you need?

To export the project, please go to 'Files-> Export projects' in the main window. Select the project and click on 'Export'. This will create a single file with .zip extension, that you can e-mail to us.

[Awie Botes]

Hi everyone, 

I am having a similar solution (where the Pnom values change) when using the Huawei 60 kW and 100 kW KTL's. Is there maybe an update on the problem? 

 

[hcapdevi]

Hello, PVsyst is working on it

As soon as the problem is fixed I will post it here 

[Awie Botes]

Thanks!

[Awie Botes]

Hi, 

I don't know if this has been stated yet, but the problem only occurs when I use two different inverters. For example a 100 KTL and 60KTL. Is there maybe an update from your side? 

 

[taahxr]

On 8/23/2022 at 11:26 AM, hcapdevi said:

Hello, PVsyst is working on it

As soon as the problem is fixed I will post it here 

Any Updates?

[hcapdevi]

Hello, 

Awie Botes : no the problem the problem occurs even with two same inverters (two 100 KTL)

taahxr : no updates for now, the PVsyst 7.2.18 does not solve the problem.

I will let you know.

[Bruno Wittmer]

The source of the problem has been identified. We did not handle correctly all cases when you add or remove sub-arrays to a system that is already configured for power sharing. As a consequence, it is possible to end up with some of the sub-arrays that are included in the power sharing configurations, but which are not flagged as using power sharing. The power sharing configurations of these sub-arrays will be reset when starting the simulation.

As a workaround, you can uncheck and check again the box at the top of the power sharing configuration:

This will force all flags in the sub-arrays to their correct state, and the problem will be gone.

We will secure the code such that these inconsistent states cannot happen any more.

[Zeira Alford]

Hi,

I got another bug that it always remain error message even if the number of MPPT inputs is a multiple of the number of inverters. So I cannot click OK for that.

[Manuel Maier]

@PVsyst forum Dear PVsyst-Team, is there any update on Zeira Alford's problem? I am facing the same issue.

Thank you!