OpenStreetMap

Obelixx's diary

Recent diary entries

Planet Files - how often will they published?

Posted by Obelixx on 20 April 2012 in English (English)

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

Determining tracks of Kontek and SwePol HVDC underground cable

Posted by Obelixx on 20 April 2012 in English (English)

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.

Technical data of wind turbines in Danmark are online available

Posted by Obelixx on 28 February 2012 in English (English)

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

Abgespannte Sendetürme

Posted by Obelixx on 28 February 2012 in German (Deutsch)

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".

Windkraftanlagen

Posted by Obelixx on 28 February 2012 in German (Deutsch)

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

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

Powerline http://www.openstreetmap.org/browse/way/5194902 near Celilo, Oregon, USA

Posted by Obelixx on 1 February 2012 in German (Deutsch)

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

Coordinates of HVDC facilities in China and Philippines

Posted by Obelixx on 1 February 2012 in German (Deutsch)

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 no default frequency for powerlines?

Posted by Obelixx on 1 February 2012 in German (Deutsch)

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.

HVDC Inverter Station near Herslev, Denmark

Posted by Obelixx on 31 January 2012 in German (Deutsch)

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?

Location: Kirkestien, Finderup, Kalundborg Kommune, Region Seeland, 4270, Dänemark

Hochspannungsleitung Dietenheim-Dellmensingen

Posted by Obelixx on 17 January 2012 in German (Deutsch)

Ich fürchte, die Hochspannungsleitung Dietenheim-Dellmensingen ( http://www.openstreetmap.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!

Creation of special map

Posted by Obelixx on 23 December 2011 in English (English)

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?

Underground/submarines cables - are they correctly shown?

Posted by Obelixx on 20 December 2011 in English (English)

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?

Complete mapping the high voltage grid of Germany!

Posted by Obelixx on 17 December 2011 in English (English)

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.

Option - show coordinates of cursor - why only longitude is displayed?

Posted by Obelixx on 28 November 2011 in English (English)

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?

A type of way we require

Posted by Obelixx on 26 November 2011 in English (English)

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?

Suggestions for improvement the section "power"

Posted by Obelixx on 26 November 2011 in English (English)

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

How we should classify powerlines

Posted by Obelixx on 26 November 2011 in English (English)

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.

Problems with map loading

Posted by Obelixx on 3 November 2011 in Esperanto (Esperanto)

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

HVDC Overhead Powerlines in Europe

Posted by Obelixx on 2 November 2011 in Esperanto (Esperanto)

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

HVDC Overhead Powerlines in Europe

Posted by Obelixx on 2 November 2011 in German (Deutsch)

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

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