How often will new planet files be published after the start of April 2012?

Determining the track of underground cables is generally difficult without special maps, which are barely available.

In case of the cable of HVDC SwePol ( http://en.wikipedia.org/wiki/SwePol ) near Ustka, Poland there are special markers marking its track ( see picture on http://www.panoramio.com/photo/24853707 )

Close to the track of the cable of HVDC Kontek ( http://en.wikipedia.org/wiki/Kontek ), which runs from Bentwisch in Germany to Bjaeverskov in Denmark, there are several cabinets with cable monitoring equipment. Please try to find out their locations.

Determing the track of an underground DC cable should be possible with a compass, when the cable is in operation.

It is possible to add important data of wind turbines in Denmark as there is an official list of them

Download therefore http://193.88.185.141/Graphics/Energi_i_tal_og_kort/energidata_kort/stamdataregister_vindmoeller/AnlaegProdTilNettet20080616.xls

Warum gibt es keine Möglichkeit, mit Potlatch den Verlauf der Abspannseile von abgespannten Sendetürmen auf Openstreetmap darzustellen?

Ich vermisse hier ein Element wie "mechanische Verbindung".

Könnte man nicht - sofern bekannt - versuchen, bei Windkraftanlagen die folgenden Daten hinzuzufügen:

* Nabenhöhe
* Rotordurchmesser
* Typ/ Hersteller
* Gesamthöhe
* Nennleistung

What is the exact function, name and designation of the powerline osm.org/browse/way/5194902 near Celilo, Oregon, USA?
I believe, it is an experimental DC powerline. Who knows more?

Is it possible for Openstreetmap-members to find out the coordinates of the following HVDC schemes:

* HVDC Zhoushan ( http://en.wikipedia.org/wiki/HVDC_Zhoushan )
* HVDC Leyte-Luzon ( http://en.wikipedia.org/wiki/HVDC_Leyte_-_Luzon ) near Naga, Philippines . It would be also great, when this line would be mapped.
* HVDC Three Gorges – Changzhou near Longquan ( http://en.wikipedia.org/wiki/HVDC_Three_Gorges-Changzhou )

Why is the frequency value for a new powerline not set by default 50 Hertz for lines in Europe and 60 Hertz for lines in North America? As nearly all lines have this value, it would make sense and the exceptions could be set manually.

According http://en.wikipedia.org/wiki/Great_Belt_Power_Link , there is since 2010 an HVDC Inverter Station near Herslev Denmark ( approximate coordinates 55° 32′ 0″ N, 11° 19′ 0″ E ). However this station is not visible on Bing, Wikimapia, etc. as obviously outdated satellite pictures are used.
Can some Danish mappers map this station on Openstreetmap?

Ich fürchte, die Hochspannungsleitung Dietenheim-Dellmensingen ( osm.org/browse/way/41389402 ) existiert nicht oder die Endpunkte sind falsch. Zumindest ist auf keinen Satellitenbildern etwas von einer Hochspannungsleitung am fraglichen Ort zu suchen. Eine Leitung von Dietenheim nach Dellmensingen würde weiter nördlich verlaufen!
Bitte das Objekt überprüfen!

With which tools can I create special maps with Openstreetmap-Data? I want to create a map of Germany with all powerlines with frequeny=16.7 Hertz. How can I do it?

I discovered that several underground/submarine cables are shown in Openstreetmap. Which were the sources of their track? As on satellite pictures it is in most cases impossible to find out where they run and that they are not shown in most maps commercial available, it may be impossible to proof if a shown way of right is correct. Which are the used data for such objects? How exactly is their track shown?

From Germany nearly all powerlines with operation voltages of 110 kV and more are already mapped. However there are sometimes still some lines not shown in Openstreetmap or shown incorrectly.
I fixed several of this bugs in the last weeks. Please try to complete mapping of all powerlines with operation voltages of 110 kV and more in Germany.

When I set the option "show cursor coordinates" I get only the longitude of the cursor and not the latitude. What is the reason why I get not the latitude? How can I fix the problem?

There is one type of way which should be added: it is the fix interconnection for example by a beam between two structures, for example buildings, towers or pylons.
This feature should be so designed, that it can be also used for showing bridges in a detailed manner. Why is a bridge not represented by its span and support structures?

For the section power, I suggest the following improvements:
- conductor count and voltages should be freely choseable, as sometimes non-standardized voltages are sometimes used and the conductor count can be at least each number between 1 and 18 ( yes, there are powerlines with only 1 conductor per pylon. HVDC Cahora Bassa is one of them)
- it should be setable the function of a pylon in the line: is it a suspension tower, a strainer, a transposing tower, a branch, etc.
- it should be setable the pylon type, I mean hereby crossbar count and type of conductor arrangement
- sometimes pylons carry circuits with different voltages ( and even frequencies), so it should be choseable the count of different systems and of what kind they are

I suggest, that we should classify all overhead powerlines with at least one circuit with an operation voltage of more than 50000 volts as "high voltage line" and all other powerlines - except of overhead electrode lines of HVDC systems with an operation voltage of more than 50000 volts - as "low voltage lines".
This makes sense, as most official topographic maps do not show lines with voltages with less than 50000 volts.
Do not use the symbol "pylon" for "low voltage lines", use for this lines always "power pole". The reason therefore is, that at some zoom levels, pylons are displayed, but "low voltage lines" not and rows of pylons without interconnections look bad as they suggest a line under construction.

An electrode line of a HVDC system is a line used at a HVDC scheme with ground return for the interconnection of the inverter with the ground electrode. Such a line can be implemented as underground cable or as overhead line, whereby it can use the towers of the main DC line, separate towers or towers of AC-powerlines. As the conductor of an electrode line runs to a ground electrode, it has no high voltage against ground and can be implemented similiar to 10 kV AC-lines.
However as such a line is part of a transmission scheme using voltages of more than 50000 volts ( all HVDC schemes with overhead electrode lines are operated with such voltages) it should be always classified as "high voltage line", in order to show, that this is a line belonging to a line designed for more than 50000 volts.
One may ask: why are there electrode lines at all? Why is the scheme not grounded at the inverter?
The reason why a special electrode away from the inverter is used is the prevention of electrochemical corrosion, which would occur if the grounding would be done in an inpropriate manner.

Why is the system often not able to load the map?

I added all HVDC Overhead Powerlines ( inclusive electrode lines - with one exception) according the coordinates to Open Street Map, if they were not already shown

These lines are
* Baltic-Cable ( http://en.wikipedia.org/wiki/Baltic-Cable )
* Konti-Skan ( http://en.wikipedia.org/wiki/Konti-Skan )
* Cross-Skagerrak ( http://en.wikipedia.org/wiki/Cross-Skagerrak )
* HVDC Gotland ( http://en.wikipedia.org/wiki/HVDC_Gotland )
* Fenno-Skan ( http://en.wikipedia.org/wiki/Fenno%E2%80%93Skan )
* HVDC Italy-Greece ( http://en.wikipedia.org/wiki/HVDC_Italy%E2%80%93Greece )
* HVDC Volgograd-Donbass ( http://en.wikipedia.org/wiki/HVDC_Volgograd%E2%80%93Donbass )
* SACOI ( http://en.wikipedia.org/wiki/HVDC_Italy%E2%80%93Corsica%E2%80%93Sardinia )

However, I was not able to add the electrode line of SACOI on Corse, as I do not know where it runs ( it looks like a 20 kV line with 2 conductors and such objects can be barely detected on satellite pictures).
Also I was not able to add the electrode line of HVDC Volgograd-Donbass in Volgograd area, as it is not clearly shown.

Hereby people in Bastia area and Volgograd can help.

In both cases

I added all HVDC Overhead Powerlines ( inclusive electrode lines - with one exception) according the coordinates to Open Street Map, if they were not already shown

These lines are
* Baltic-Cable ( http://en.wikipedia.org/wiki/Baltic-Cable )
* Konti-Skan ( http://en.wikipedia.org/wiki/Konti-Skan )
* Cross-Skagerrak ( http://en.wikipedia.org/wiki/Cross-Skagerrak )
* HVDC Gotland ( http://en.wikipedia.org/wiki/HVDC_Gotland )
* Fenno-Skan ( http://en.wikipedia.org/wiki/Fenno%E2%80%93Skan )
* HVDC Italy-Greece ( http://en.wikipedia.org/wiki/HVDC_Italy%E2%80%93Greece )
* HVDC Volgograd-Donbass ( http://en.wikipedia.org/wiki/HVDC_Volgograd%E2%80%93Donbass )
* SACOI ( http://en.wikipedia.org/wiki/HVDC_Italy%E2%80%93Corsica%E2%80%93Sardinia )

However, I was not able to add the electrode line of SACOI on Corse, as I do not know where it runs ( it looks like a 20 kV line with 2 conductors and such objects can be barely detected on satellite pictures).
Also I was not able to add the electrode line of HVDC Volgograd-Donbass in Volgograd area, as it is not clearly shown.

Hereby people in Bastia area and Volgograd can help.

In both cases