I have now introduced a specific attribute for small substations:
substation=minor_distribution. It is exclusively to be used on the 'last
level' of transformation to low voltage line voltage (400 volt in
Europe). This should address the desire to have an unambiguous way of
tagging small kiosk-type etc substations. At the same time the
recommendation to map such small substations as power=transformer has
been removed from the feature page (except for pole-mounted transformers).
See
http://wiki.openstreetmap.org/wiki/Tag:power%3Dsubstation#Substation_values
Ole
On 12/10/2013 13:08, Martin Koppenhoefer wrote:
2013/10/12 Ole Nielsen / osm <[email protected] <mailto:[email protected]>>
I propose to change the meaning of "substation=distribution" to be used
only on substations at the last level of voltage transforming, thus the
small street-level transformer kiosks etc supplied with medium voltage
(typically 10-30 kV) and delivering low voltage power to households and
small businesses.
IMHO the IEC are right with defining everything below 100kV as
distribution, I wouldn't use this given term with a different meaning.
Maybe you could add another term like local_distribution for the last
level (Trafohäuschen), if you don't have confidence in the mappers
tagging voltage levels. According to wikipedia:de there seem to be 4
agreed levels of power transport and distribution in Germany:
* 220kV/400kV (national transport, also DC)
* 110kV (regional transport)
* 30-60kV (regional distribution)
* 6-20kV (local distribution)
http://de.wikipedia.org/wiki/Umspannwerk
cheers,
Martin
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