Problem Inverter definition Storage

[rock_fire07]

Hello everyone,

When I enter the parameters for a self-consumption system with storage, an error appears that says: 'Inverter Definition: The output nominal power is not defined for a Sungrow battery with AC coupling.' I don't know what parameters I need to enter or where this parameter is located.

Thanks in advance

[André Mermoud]

This concerns the inverter at the output of the battery pack. 

On the next page "Self consumption", please define the "Max. discharging power".

As a first step, you can ask the default value proposed by PVsyst according to your consumption profile (checkbox on the right). 

[rock_fire07]

Thank you for your response.

The problem persists even when I move to the next page and select the default value.

Regards.

[André Mermoud]

Sorry, I can't understand that. 

Please send us your full project, using "Files => Export project" in the main menu. 

Send it by e-mail to  support@pvsyst.com, and tell us in which variant you have this problem. 

[André Mermoud]

Thank you for sending your project. 

However it doesn't show the same output as you have shown here:

The message tells you that the maximum discharging power is highly undersized. Your load definition has many hours with a load demand of around 21.3 MW, including during night, and you limit the discharging power to 10 MW. 

When I specify 22 MW as a discharging power, as you did in your previous message, I don't see any error nor warning anymore.