Shin Shinano
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is the designation of a
back-to-back Back to Back or back-to-back may refer to: Film and theatre *Back to Back (film), ''Back to Back'' (film), a 1996 American action film *Back-to-back film production, the practice of making two films as a unified production *Back to Back Theatre, ...
high-voltage direct current A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. Most HVDC links use voltages betwe ...
(HVDC) facility in
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
which forms one of four frequency converter stations that link Japan's western and eastern power grids. The other three stations are at Higashi-Shimizu, Minami-Fukumitsu, and Sakuma Dam.


Converter equipment

The HVDC back-to-back facility Shin Shinano uses line-commutated
thyristor A thyristor (, from a combination of Greek language ''θύρα'', meaning "door" or "valve", and ''transistor'' ) is a solid-state semiconductor device which can be thought of as being a highly robust and switchable diode, allowing the passage ...
converters. The station houses two converters, one of which opened in December 1977,Compendium of HVDC schemes, CIGRÉ Technical Brochure No. 003, 1987, pp100–103. the other in 1992. The original 1977 converter was one of the first thyristor-based HVDC schemes to be put into operation in the world and used oil-insulated, oil-cooled outdoor thyristor valves supplied by
Hitachi () is a Japanese Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1910 and headquartered in Chiyoda, Tokyo. The company is active in various industries, including digital systems, power and renewable ener ...
(60 Hz end) and
Toshiba is a Japanese multinational electronics company headquartered in Minato, Tokyo. Its diversified products and services include power, industrial and social infrastructure systems, elevators and escalators, electronic components, semiconductors ...
(50 Hz end). A special workshop was provided on the site, in which valve maintenance (for example replacing failed thyristors) could be carried out under clean conditions in order to avoid contamination of the oil. The 1992 converter uses more conventional air-insulated, water-cooled thyristor valves. In 2008 the original 1977 converter was decommissioned and replaced by a third converter, similar in design to the 1992 converter but using light-triggered thyristors. The Shin-Shinano link operates with a DC link voltage of 125 kV for each converter. The station was initially rated at 300 MW. In 1992, with the addition of the second 300 MW converter, the maximum transferable power was uprated to 600 MW.


See also

* Energy in Japan * Kii Channel HVDC system * HVDC Hokkaido–Honshu


References


External links


CIGRÉ B4 Compendium of HVDC Schemes, 2009.




(archived copy)
www.transmission.bpa.gov/cigresc14/Compendium/Shinshin%20Pictures.pdf
(archived copy) Converter stations Electric power infrastructure in Japan Tokyo Electric Power Company Energy infrastructure completed in 1977 Energy infrastructure completed in 1992 {{Japan-struct-stub