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13 September 2005 - A team of South Korean researchers and engineers said Tuesday that they have developed a high-temperature superconducting power transmission cable that can handle fives times more electricity than existing cables.
The new cables can be made a third thinner than current cables, while transmitting much more power, researchers said. The Centre for Applied Supercondctivity Technology of the Korea Electrotechnology Research Institute (KERI) and LS Cable Co. led the development project. The lines are of the 22.9 kilovolt, 50 megavolt-ampere type.
Engineers said they have carried out successful tests such as simulated blackouts, sudden power surges and repeated temperature fluctuations for more than six months to examine the reliability of the cables. The tests are also expected to allow for the cables to be used commercially with the least number of extra trials.
The cables employ superconductivity, in which materials in extremely high temperatures loose their electrical resistance and acquire the ability to carry electric current with no loss of energy.
Cho Jeon-wook, one of the chief researchers for the project and a technician at KERI's Centre for Applied Superconductivity Technology, said the development team has built a monitoring and control system that can help smooth operation of the cables.
He said this is the second time a superconducting power cable has been developed, and that this cable uses indigenous technology.
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