Sakuma (Shizuoka)
| Sakuma-chō (incorporated) 佐 久 間 町 |
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| Geographical location in Japan | |||
| Region : | Chūbu | ||
| Prefecture : | Shizuoka | ||
| Coordinates : | 35 ° 5 ' N , 137 ° 49' E | ||
| Basic data | |||
| Incorporated on: | Jul 1, 2005 | ||
| Incorporated in: | Hamamatsu | ||
| Surface: | 168.53 km² | ||
| Residents : | 5685 (March 31, 2004) |
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| Population density : | 34 inhabitants per km² | ||
| Community key : | 22487 | ||
| Symbols | |||
| Flag / coat of arms: |
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| Tree : | Crescent fir | ||
| Flower : | azalea | ||
| Bird : | Zosterops japonicus | ||
| town hall | |||
| Address : |
Sakuma Town Hall 429 - 1 , Sakuma Sakuma -chō, Iwata-gun Shizuoka 431-3901 |
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| Website URL: | THE SAKUMA FREQUENCY HVDC CONVERTER STATION ( Memento from May 15, 2005 in the Internet Archive ) | ||
Sakuma ( Japanese 佐 久 間 町 , - chō ) was a city in Iwata-gun in the Japanese prefecture of Shizuoka .
history
On September 30, 1956, the Chō Urakawa ( 浦 川 町 , -chō ), as well as the Mura Sakuma ( 佐 久 間 村 , -mura ), Shironishi ( 城西 村 , -mura ) and Yamaka ( 山 香 村 , -mura ) joined the Chō Sakuma together.
On July 1, 2005, Sakuma was incorporated into Hamamatsu as a district of the same name in the Tenryū-ku ( 天 竜 区 ) district.
traffic
- Street:
- National road 152 to Ueda or Hamamatsu
- National Road 473 to Gamagōri or Makinohara
- Train:
- JR Central Iida Line to Toyohashi or Tatsuno
Power generation
At Sakuma is the Sakuma dam , which feeds an important Japanese hydropower plant.
One kilometer southwest of the hydropower plant, Japan's first high-voltage direct current transmission system was built in 1965 . It consisted of a close coupling to couple the 50 Hertz and 60 Hertz parts of the Japanese power grid. Mercury vapor rectifiers were used as power converters. This system, which allowed an exchange of up to 300 megawatts between the two power supplies at a symmetrical voltage of 125 kV, was replaced in 1993 by the world's first power converter system equipped with photothyristors .
education
In Sakuma there were 4 elementary, 2 middle and one high school.
Web links
- HVDC close coupling Sakuma ( Memento from May 26, 2005 in the Internet Archive )
- Circuit diagram of the HVDC close coupling Sakuma ( Memento from May 27, 2005 in the Internet Archive ) (PDF)