context of the milestone

Revision as of 27 November 2012 at 19:57.
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This seems to be a worthwhile nomination, but so far rather short of details

I could not find descriptions of this hydro system in English language books so far, so perhaps it would be useful to have a 'timeline' to relate this to other contemporary developments.

The key essentials are, I suppose, hydro-generation, multiphase and long distance high voltage transmission.

There are some existing IEEE milestones which cover similar developments at about the same time: 1. Redlands Power plant ( Mill Creek ) Hydro plant, 3 phase, 1893 2. Adams Hydro, high voltage distribution, multiphase, for use at Niagara Falls, 1895 3. Lota, Chile, Hydro plant, 3-phase motors (so I suppose 3-phase trannsmission), 1897 4. Decew Falls, Ontario, 2-phase, 22kV

Other relevant developments: 5. Connection Lauffen to Frankfurt (Germany) 25kV, 3-phase line, 175 km distance, 1891 6. Turin Italy, 2kV, 3-phase experiments, 1884 7. Hydroelectric plant at Portrush, Ireland, 1883

The book by Thomas P Hughes, Networks of power, electrification in Western Society, 1880-1930, John Hopkins UNiversity Press, 1983, has useful information.

Charles Scott (who worked with Nikola Tesla) was involved in a high voltage transmission system at Telluride (1891), and a scheme for converting 2-phase generators to 3-phase transmission at Niagara, in 1896, used the Scott transformer method (1894) to convert 2-phase to 3-phase.

Did Tesla have any hand in the Krka-Sibenik scheme?

    Tonydavies15:27, 8 July 2012

    Thank you for your kind comments.

    A timeline is included in the following paper: Of course, as any, this timeline does not list all early power systems.

    In addition to the essentials you listed, I would certainly like to add "complete power system" (production, transmission, distribution, consumption). Some early power systems, such as some you listed were either for an experiment or for an exhibition; this one was not, it was intended as a commercial system supping a city (Šibenik) with (multiphase) electric power.

    I could not find any (conclusive) proof that Nikola Tesla was in any way involved with the Krka-Šibenik power system. This would have also been unlikely, as the masterminds behind the Krka-Šibenik system worked for Ganz ( Krka-Šibenik was the first implementation of their 2-phase alternator (the "A2"). Several famous engineers worked at Ganz, including Károly Zipernowsky, who together with Miksa Déri and Ottó Bláthy, is credited for the construction (and patent) of the first transformer and several other important AC technologies. A large number of the Zipernovsky, Déri and Bláthy patents were first implemented in Ganz early power systems, including Krka-Šibenik.

    Marko Delimar 3 September 2012, 3 September 2012

      I have added some additional documents on hydro power plant Jaruga. The first document "Development of Croatian Power System.pdf" is a scan of the historical book "Development of Croatian Electric Power System". We have translated some headlines of the book. This book describes the first hydro power plant in Dalmatia (Croatian coastal region) built by the company "Ante Supuk and Son". The hydro power plant was built in only 16 months. The allowed head was 25.8 meters, but only 10 m head was used. The vertical turbine Girard 320 HP was used. The generator was horizontal 320 kVA, 3000 V, 42 Hz. Electricity was transmissioned to the city of Sibenik using 4 wire (2phase) power line 11 km long. In the city of Sibenik the voltage was trasformed to 110 kV. The second document "Hydro Power Plants in Croatia.pdf" contains description of today's hydro power plant Jaruga 2, which was built near the location of the old hydro power plant Jaruga 1. The whole text is in English, and I marked in yellow the relevant parts describing the old hydro power plant Jaruga 1.

      Best regards, Hrvoje Pandzic

        Hpandzic19:45, 27 November 2012

        Dear all,

        I have uploaded three new photos taken at the location of the hydro power plant Jaruga 1. Please check them out.

        Best regards, Hrvoje Pandzic

          Hpandzic19:57, 27 November 2012