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flexiblepower / s2-ws-json

A WebSockets and JSON based protocol specification implementing the EN50491-12-2 "S2" standard for home and building energy management
Apache License 2.0
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Missing struct for DC power measurement #14

Closed gautamrituraj closed 4 months ago

gautamrituraj commented 4 months ago

Hi,

We use FRBC for battery chargers and want to use the DC power. Unfortunately, there is no structure in the commodity for DC power measurement. Can we make a structure for the commodity with a name like "ELECTRIC.POWER.DC"?

Many thanks for considering my request.

Kind regards, Gautam

wilcowijbrandi commented 4 months ago

Hi Gautam,

That is a good remark, thanks for bringing it up!

Just to be sure: The PowerMeasurements are only intended for power exchanged with "the grid" (whatever that means depends a bit on the context). So if you have a battery that is connected through an inverter to the AC grid, you should use the AC power values here.

Having said that, DC grids are definitely a thing and it makes sense that S2 should support those. This Github project however is an open implementation of the EN50491-12-2 standard, and it's this standard that is lacking this support. So you're remark should be direct towards the standard, not to this project. I don't think it would be wise to deviate here from the official standard (but I would encourage you to make a fork if it's blocking you).

I'll forward your remark to the standardization working group.

Best regards, Wilco