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Add accountMode setting for energy meters, fix et340 with phase balancing grids #3

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@MichaelErmer MichaelErmer commented Mar 12, 2023

I have done some calculations and compared them with my providers grid meter readings, this should resolve the issue.

This PR is a draft, I'm unable to buiild it right now, as the venus sdk does not work on my M2 Macbook and I also can't figure out a way to build it on my cerbo :(

In this screenshot, the green numbers (ET340 kWh Total) are correct, the red (ET340 kWh per Phase) are wrong and the red are those that are counted for the VRM sums, to resolve this I propose to ignore the per phase readings and spread the total readings on the phases (this is how it works for em24).
image
image

Changes:
feat(accountingMode): add setting "accountingMode", if set to sum, the individual energy counters for each phase of the meter will be ignored, this fix the incorrect behaviour for ET340 devices when compared to phase balancing grid meters

…e individual energy counters for each phase of the meter will be ignored, this fix the incorrect behaviour for ET340 devices when compared to phase balancing grid meters
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