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Battery run to min Soc even over peak prices

Open bensebborn opened this issue 1 year ago • 9 comments

Noticed this a few times now. The plan looks fine then it recalculates and switches to a very strange plan where the battery just discharges to min Soc and stays there for hours

there’s an expensive period upcoming which is 8p more than the current price, but no charge is scheduled prior.

sometimes it also shows car charging in slots where the battery is discharging, which is disabled

If I turn expert mode off, the plan returns to normal. So guessing it must be an advanced option but unsure which one would do this (haven’t changed many advanced options, mainly just those recommended for agile tarrif)

Expected behavior

Battery charges when there’s a clear difference between current price and future peak price.

Predbat version

7.16.16

Environment details

Sunsynk 10k inverter 28.8kWh battery EV

Screenshots

Log file Can provide if needed. Currently on phone so not easy to access.

bensebborn avatar Apr 25 '24 21:04 bensebborn

IMG_6087 IMG_6088

bensebborn avatar Apr 25 '24 21:04 bensebborn

Expert mode off, normal

IMG_6089

bensebborn avatar Apr 25 '24 21:04 bensebborn

Have noticed this again today. Switching to/from expert mode mates no difference now

I had a decent plan which was estimating ending on approx £9. Then refreshed and the plan is £24!

Will attach logs shortly

bensebborn avatar Apr 26 '24 19:04 bensebborn

Yes that plan looks odd

Can you try upgrading to the latest version 7.17.3 and see if this improves things?

gcoan avatar Apr 26 '24 20:04 gcoan

I’m using the Sunsynk branch so unfortunately can’t upgrade until those changes are merged in

bensebborn avatar Apr 26 '24 20:04 bensebborn

Something I’ve noticed when this happens is all the prices are shown as red. So it doesn’t seem to be able to differentiate the cheaper slots. Maybe that’s why it’s not trying to charge?

IMG_6093

bensebborn avatar Apr 27 '24 07:04 bensebborn

Now merged to 'main', can you test there please?

springfall2008 avatar Apr 27 '24 09:04 springfall2008

Thank you, will do

bensebborn avatar Apr 27 '24 09:04 bensebborn

Thanks seems a lot better at first glance. I shall keep an eye as previously the plan did change quite drastically after a few runs, not sure why as the rates were the same and it was only about an hour later.

Screenshot for the same period:

image

Still a couple of cheaper slots that I would have expected a charge in (eg Sunday 21:30 + 22:30 @ 15p, with all slots 16-19p after? But it might well be doing something more intelligent than I can spot right now

image

Will keep you posted

bensebborn avatar Apr 27 '24 09:04 bensebborn

As this ticket is old I'm going to close it, please re-open if the issue is there on latest.

springfall2008 avatar Jan 01 '25 19:01 springfall2008