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victronenergy / dynamic-ess

MIT License
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ESS not start charging #17

Closed banne123 closed 12 months ago

banne123 commented 12 months ago

Ok, other issue :-) Why isnt the ESS starting to charge? The graphs predict (I guess?) a scheduled charging but when the hour has come nothing happens and is shifts to next hour. Scheduled charging is now for 3 hours already on 10 mins and 10% SOC. Why is this happening?

Scherm­afbeelding 2023-07-10 om 12 14 00 Scherm­afbeelding 2023-07-10 om 12 11 55
dirkjanfaber commented 12 months ago

The schedule is used for putting the battery in "idle state". For this to function it utilizes the first schedule in ESS scheduled charging. It injects a new schedule with the Soc set to minSOC.

Charging follows the blue line, so your battery should be charged by now.

banne123 commented 12 months ago

The schedule is used for putting the battery in "idle state". For this to function it utilizes the first schedule in ESS scheduled charging. It injects a new schedule with the Soc set to minSOC.

Charging follows the blue line, so your battery should be charged by now.

Not even close, its 60% now. The calculation to 100% SOC is not really based on actual charging. I was wondering based on what is it starting to charge at 13:00? If I look at the pricechart of today the most obvious moment to start charging was 12:00 as it takes 4,5 hours to charge my 15kWh batteries

dirkjanfaber commented 12 months ago

The algorithm will charge when the costs are low or when there is predicted PV yield. If the system does not have solar connected, it will charge when buying is cheap and discharge / consume when the price is high. The algorithm also takes predicted consumption and battery costs into account when deciding to charge or discharge. As far as I can see the system is functioning as intended. Please leave it running for a couple of days and then raise a new issue if it fails to meet the expectations.