NEGATIVE BATTERY LOSS in grid-connected system

[Birgit]

Hi! We are writing a thesis using PV*SOL and need help ASAP

We have designed a grid connected PV system (7 roof tops) with a li-ion battery for energy storage. For our first simulation we used 4 battery packs of XOLTA 79kWh/30KW. For the next simulation we reduced the buildings energy consumption drastically due to installation of heat pumps, the solar radiation is the same and we still used 4 battery packs but this time we get a negative battery loss.

What does a negative battery loss mean?

[developer_fw]

Hello Birgit

thank you for your request.

On 5/5/2023 at 6:38 AM, Birgit said:

but this time we get a negative battery loss

Hm, it really is hard to tell without the project file. Could you send it to me via private message here in the forum so we can have a look into it?

Thank you in advance and kind regards
Frederik

[Birgit]

Hi Frederik, thanks for reaching out!

I sent you the project via private message. If I was supposed to post it here instead lmk. 

[developer_fw]

Hej Birgit

thank you for sending the project files. I did have a look into it, but the first guess regarding the settings of the loading strategy has not been the reason.

I'll keep you posted.

Kind regards
Frederik