Hi Steve,
I've been thinking more about this and I think the subkeys grid,
generator and battery should cover any conceivable method (for now!) to
acquire electricity. So a *grid* is any collection of multiple
generators/batteries/substations/transformers, a *generator* is a device
that locally produces electricity and a *battery* (either chemical or
mechanical) is something that locally stores energy for later usage.
The possible values for any of these subkeys is then yes/backup/no (i.e.
electricity:battery=no), where *yes *means the device/grid is always
connected and it is usually (daily?) used. The term *backup* then means
that the device is only used when the usual device reaches its capacity
or fails, so it is not always on/connected. The type of backup, be it
UPS or stand-by, and the length of time that it can keep systems running
could then also be tagged. To specify exactly which devices are kept
running it might then be useful to have a relation-tagging scheme for
circuits but I think this would be outside the scope of the electricity
tag which should only note the presence of the systems in a
building/amenity. This could then be a flag for e.g. firemen. The term
*no* would then just mean that the specified building amenity does not
have a grid/generator/battery. If it's unknown, it should be left untagged.
I think this should completely cover all cases of buildings having
electricity? and the specific tagging for backup systems could then be
discussed separately. And if a new method of acquiring electricity is
introduced (wireless charging?) it could be easily added to the current
tagging.
Regards,
Lukas
On 12.11.20 02:15, Lukas Richert wrote:
If it's unclear I would just leave electricity:grid untagged as
there's no way to know if it's yes or no (another advantage of the
namespace tagging). In some areas, I think one could relatively safely
assume that if all other houses are connected to the grid, that one
likely is too. However, Tagging the presence of a generator is
definitely easier to see and would be more important for firefighters
to know (islanding).
Mostly I would probably say that the vast majority of private houses
probably don't need to be tagged in this detail and it definitely is
they type of information I've seen advertised at hotels and camp sites
where one wouldn't have to get all creepy to figure it out.
Also, if I understood https://en.wikipedia.org/wiki/Solar_inverter
correctly, all of the different inverter types you mentioned are, one
way or another, connected to the grid. That might be another level of
detail one wants to map, but doesn't need to be worked into
electrical:grid I think? (I don't own either solar panels or a house
that they could go on though, so I'm not completely informed on this
topic!)
Luke
On 12.11.20 01:59, stevea wrote:
That IS what I mean. However, STILL left unsaid is that short of
ringing the doorbell and asking the home / business owner "are your
solar panels grid-tied, battery-feed, directly converted to an
inverter...?" you don't really know.
How will you tag those buildings? (I feel a nose sniffing up my, um,
house). Really, there isn't any way to know, without getting creepy
- snoopy.
SteveA
On Nov 11, 2020, at 3:45 PM, Lukas Richert <lrich...@posteo.de> wrote:
If I understood you correctly, this would fall under grid-connected
houses that I mentioned in the last example. This was the specific
reason why I think namespace tagging seems to be clearer. The house
would then be tagged with:
building=house
electricity=yes
electricity:generator=yes
electricity:grid=yes
electricity:generator:origin=solar
electricity:access=no
By tagging both electricity:grid=yes and electricity:generator=yes
this specifies that the building is connected to both and both are
routinely used. In contrast, it would also be possible to tag
electricity:generator=backup if the generator is only on when the
grid fails.
Is this what you meant by grid-tie?
Regards, Luke
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