Policy / Systems / Technology

April 17, 2010

 

Japan's 1100 kV UHV Power Technology Approved as International Standard

Keywords: Environmental Technology Non-manufacturing industry 

The International Electrotechnical Commission (IEC) approved Japan's 1100 kilovolt (kV) of ultra high voltage (UHV) power transmission and transformation technology as the IEC international standard in May 2009. Japan has been working on the UHV technology since the early 1970s.

Japan's UHV technology is capable of transmitting ultra high voltage electricity up to 1,100 kV, that is three to four times as much electricity as the current 550 kV transmission lines. In addition, Japan's UHV helps to reduce the number of power lines and power loss during transmission.

UHV technologies have also been developed in Europe and the United States but there are no UHV facilities in operation. Under such a situation, 1,200 kV proposed by U.S. and the Soviet Union, and 1050 kV proposed by Italy were approved as IEC international standards in 1977 and 1997, respectively.

Japan adopted 1,100 kV as its UHV standard in 1980, deeming it the most suitable standard for Japan, given the country's small size and steep, mountainous terrain. China, having achieved remarkable economic growth, has also adopted the Japan-established 1,100 kV UHV technology in order to respond to its rapidly growing demand for electricity.

Posted: 2010/04/17 06:00:15 AM

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