On 13/1/20 11:36 am, François Lacombe wrote:
Hi Joseph,
Le sam. 11 janv. 2020 à 06:21, Joseph Eisenberg
<joseph.eisenb...@gmail.com <mailto:joseph.eisenb...@gmail.com>> a écrit :
Who is using route=power?
Some electricity mappers including me.
route=power represents a circuit (metallic continuity) between two or
more substations.
Continuity can be had by the lines sharing a node. In the same way roads
share a node to enable routing.
It is different from a line as a physical lines can hold several of
those circuits for a given distance (situations where you have n x 3
cables in a 3-phases power network).
I would expect a line that has n*3 cables to be tagged cables=3;3 (for
n=2, add more ;3 for more n). This would signify that the 3 phase
circuits are separate.
Humm problem in identifying which of the 3 phases is connected to which
when the line splits off.
Who uses this route relation - as in a end use? Or is this a 'build it
and they will come' thing?
It has no documentation except for a rather confusing Proposal page
(https://wiki.openstreetmap.org/wiki/Proposed_features/Power_routing_proposal/Tagging_similar_to_Transportation_routes)
but it's used 15,000 times.
The proposal didn't reach the requested consensus.
There are currently two options for power routing, including
route=power but until now we didn't manage to find a single solution
to be voted. Discussion is still open I think.
Is this feature actually useful and verifiable?
It is really useful and verifiable : follow the connected cables.
Some countries like France make open data available that describe
those relations.
See this Overpass query to see how it's going for RTE in France :
https://overpass-turbo.eu/s/yUw
We've just finished a few days ago to complete all ~1520 relations for
400kV and 225kV.
Le sam. 11 janv. 2020 à 07:03, Warin <61sundow...@gmail.com
<mailto:61sundow...@gmail.com>> a écrit :
Is this feature actually useful and verifiable?
Not usefull.
Wow, how can you say that?
However I view them similar to roads .. there maybe a power line there ..
but 'traffic' can be in both directions.
I see no point in having a dedicated 'route' for power.
Let us know how you can map this without a route relation :
https://www.openstreetmap.org/relation/6194774
Given the fact this line holds two independent circuits :
https://www.openstreetmap.org/way/130110647
All the best
François
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