Proposal talk:FR:Substation functions
In English - some of the proposal translated so I can see what is proposed... and let others see it. I have done a little editing! It will do for now. Warin61 (talk) 07:44, 23 April 2019 (UTC)
- Thank you for time spent on this.
- The proposal has been rejected last month. Work will continue on further documents, see Proposed_features/Traction_substations_extension. This one shouldn't be edited.
- I don't get why is this raised on French translation, what's the problem exactly? Fanfouer (talk) 08:15, 23 April 2019 (UTC)
Reasons
The existing key substation = * is currently shared between the power = substation and pipeline = substation objects to provide details about the role of a substation. Some values approved as transmission and distribution concern the hierarchy of the station and others less used as converter and measurement functions rather than the devices installed in the station. This poses problems when we have to describe both the hierarchical and the functions of the sub station.
OSM needs a better model with values and descriptions to guide mappers.
Currently, there is no dedicated value for substations attached to power plants. Substation = transmission is used while some plants are directly connected to the distribution networks.
Most substations are described with voltage = * in OpenStreetMap but you have to take the values with care. It is currently recommended to mention at least the highest voltage in the post. Thus a single value of this key can mean that there is only one voltage in this post, or that the contributor has only indicated the highest. It is not possible to determine if transformers reduce this voltage. It must be said that voltage = * is comfort tagging for renderings to facilitate the choice of colours based on the presumed size of the substation depending on the voltage inside.
| Clé | Valeur | Commentaire |
|---|---|---|
| substation | transmission | An electric transport stationconnects and switches the energy flowing through power lines that connect large areas of production or consumption. It is suggested to use this type when the voltages in the substation exceed 100 kV, with transport networks around the world generally operating at 110 kV or more. A transmission substation can also power a regional distribution network operating below 110 kV. Stations that receive and raise the voltage from an adjacent power plant are also concerned. |
| distribution | An electrical distribution station is usually part of a network operated at voltages between 90 kV and 25 kV. It also supplies a local distribution network operated below 25 kV. It contains transformers that lower the voltage received from the transmission network, but does not allow transit between the power lines (otherwise use substation=transmission). This type of post does not yet directly supply homes or low-power customers (see substation=minor_distribution. | |
| minor_distribution | It is a small right-of-way with low-power transformation facilities to power the low voltage networks on which homes are connected (400V / 230V in Western Europe). These stations are powered via the HTA network and are usually operated between 3 kV and 30 kV. These posts are normally indoors, in cabins (building=yes) or cabinets (man_made=street_cabinet + street_cabinet=power). | |
| generation | A station located in or near a power plant and exclusively designed to discharge energy or fluids produced by the power plant to a transmission or distribution system | |
| industrial | These are stations supplying large industrial complexes, for the use of a single customer. | |
| traction | Une station de traction (605-01-06) feeds electrified railway lines or urban tramways / metro. | |
| delivery | Un poste de livraison (601-02-33) is intended for individual consumers with substantial needs for electricity or gas. | |
| transition | An "aeronautical subway station", sometimes known as "gantry" is not a separate electrical station but a fenced area allowing the connection between an underground cable and an overhead line. No active component is needed for this. If, however, only one pylon allows the transition without any fencing, you must use location: transition=yes on the node instead of identifying a substation. |
And we can complete with the following functions :
| Processus | Default for power=substation | Defalt for pipeline=substation | Comment |
|---|---|---|---|
| substation:transformation=* | yes | NA | The transformation is only available for the substations and most of them contain power=transformer |
| substation:compensation=* | no | NA | Reactive power compensation only makes sense for substations and most of them do not contain power=compensator |
| substation:conversion=* | no | NA | Frequency modification only makes sense for substations and most of them are not equipped withpower=converter |
| substation:compression=* | NA | no | Compression only makes sense for pipeline stations and most of them do not have compressors |
| substation:switching=* | yes | yes | The switch is both available for electricity and pipelines. Most positions are equipped with power=switch or with pipeline=valve. |
| substation:inspection=* | yes | yes | Inspection is possible on both power lines and pipelines. All power lines have connection points and pipelines often terminate with pipeline=inspection_gauge |
| substation:measurement=* | yes | yes | Measurement is possible for both electricity and fluids. Many operators equip their workstations with sensors and dataloggers to observe the operation of their network. |