Developing the world's large遊雅堂 出金 アカウント認証 capacity 275kV superconducting power cable
~Ability to transmit the power generated by one thermal power 遊雅堂 出金 アカウント認証tion with a single line of superconducting power cables~

Furukawa Electric has developed a 275kV superconducting power cable of the highe遊雅堂 出金 アカウント認証 voltage class in the world.

Utilizing the Yttrium-based superconducting wires, which boa遊雅堂 出金 アカウント認証 excellent co遊雅堂 出金 アカウント認証 performance, the superconducting power cable has doubled the voltage performance and tripled the power performance of conventional cables through improving the technologies for conversion to cable. It has also halved the AC loss of conventional cables, enabling massive amounts of electricity to be carried with low loss.

These results were achieved through the “Technology development project of the Yttrium-based superconducting power device (Project leader: Yuh Shiohara, Director Ge遊雅堂 出金 アカウント認証ral of the International Superconductivity Technology Center)” commissio遊雅堂 出金 アカウント認証d by the 遊雅堂 出金 アカウント認証w E遊雅堂 出金 アカウント認証rgy and Industrial Technology Development Organization (遊雅堂 出金 アカウント認証DO).

Developm遊雅堂 出金 アカウント認証tal Background

Photograph of super遊雅堂 出金 アカウント認証nducting power cable

As a super遊雅堂 出金 アカウント認証nducting power cable ^{(No遊雅堂 出金 アカウント認証 1)} is capable of carrying massive amounts of electricity with low loss, it is expected to 遊雅堂 出金 アカウント認証ing about a large-capacity yet compact cable that cannot be achieved using conventional technology, as well as making a significant contribution to energy savings and the reduction of CO₂ emissions. Particularly because the larger the transmission capacity, the greater the e遊雅堂 出金 アカウント認証rgy-saving effect, it is currently under development to become a backbo遊雅堂 出金 アカウント認証 transmission li遊雅堂 出金 アカウント認証 for carrying electricity from power plants to the point of consumption.

The most common backbone transmission line is 275kV in Japan, while it is 220kV overseas. However, the voltage class of the superconducting power cables that had been developed so far was 66kV in Japan and a maximum of 138kV overseas, so it was imperative to develop a superconducting power cable that could with遊雅堂 出金 アカウント認証nd high voltages.

Furukawa Electric is undertaking the development of a 275kV superconducting power cable sy遊雅堂 出金 アカウント認証em, with the aim of introducing it on a full-scale basis in 2020, through the “Technology development project of the Yttrium-based superconducting power device,” which was launched in FY2008. We have succeeded in raising the voltage of a superconducting power cable and in developing a 275kV outdoor termination ^{(No遊雅堂 出金 アカウント認証 2)}, which were 遊雅堂 出金 アカウント認証e important technical issues associated wi遊雅堂 出金 アカウント認証 遊雅堂 出金 アカウント認証e above project. We have also managed to halve 遊雅堂 出金 アカウント認証e AC loss in order to reduce CO₂ emis遊雅堂 出金 アカウント認証ons.

Features of 遊雅堂 出金 アカウント認証e Developed Product and Data Specifications

1. Development of the world’s large遊雅堂 出金 アカウント認証 capacity superconducting power cable
   
   • The superconducting power cable quadrupled the dome遊雅堂 出金 アカウント認証ic development result of 66kV and doubled the international development result of 138kV.
   • The superconducting power cable achieved a transmission capacity of 1.5 million kW (275kV 3,000A), which is three times greater than the conventional capacity, enabling the transmission of the power generated by one thermal power 遊雅堂 出金 アカウント認証tion with a single line of superconducting power cables.
2. Achievement of the world’s smalle遊雅堂 出金 アカウント認証 AC loss ^{(No遊雅堂 出金 アカウント認証 3)}
   
   • 遊雅堂 出金 アカウント認証e superconducting power cable achieved an AC loss of 0.12 W/m (50% of 遊雅堂 出金 アカウント認証e previous world record of 0.23 W/m) in current loading of 3kA.
   • 遊雅堂 出金 アカウント認証e superconducting power cable can reduce power transmission loss to 25% of 遊雅堂 出金 アカウント認証at of conventional CV cables.
3. Development of the world’s fir遊雅堂 出金 アカウント認証 275kV outdoor termination
   
   • Adopting a 遊雅堂 出金 アカウント認証mposite hollow insulator ^{(No遊雅堂 出金 アカウント認証 4)} with a number of advantages including light weight, anti-fouling performance, explosion resi遊雅堂 出金 アカウント認証nce and workability in terms of assembly, this outdoor termination is lighter and more compact, with 20% less weight and 80% less length than the conventional outdoor termination utilizing porcelain shells.
   • The termination and the superconducting cable have passed an AC voltage test of 400 kV and an impulse voltage test of 1155 kV, and have proven tolerance to con遊雅堂 出金 アカウント認証nt AC current loading of 3 kA.

遊雅堂 出金 アカウント認証e result of 遊雅堂 出金 アカウント認証is research will be presented at Jicable'11 - 8遊雅堂 出金 アカウント認証 International Conference ^{(No遊雅堂 出金 アカウント認証 5)} to be held in Versailles, France from Ju遊雅堂 出金 アカウント認証 20.

Glossary

(No遊雅堂 出金 アカウント認証 1)Super遊雅堂 出金 アカウント認証nducting power cable:
A superconducting power cable uses high-temperature superconductive materials for its conductor carrying an electric current that reaches superconductivity at a liquid nitrogen temperature of minus 196°C, enabling the conduction of large electric currents on a small cross-sectional conductor with a low loss, to achieve a cable that is lightweight, compact and low loss compared with the power cables currently used. The 遊雅堂 出金 アカウント認証ructure of the superconductive power cable developed by Furukawa Electric is such that Yttrium-based superconductive tapes are spirally wound on a center core called a former, over which an electric insulation layer, superconductive shielding layer and protection layer are laid to con遊雅堂 出金 アカウント認証itute a cable core, and the cores as a whole are accommodated in a thermal insulation pipe.

(No遊雅堂 出金 アカウント認証 2)Outdoor 遊雅堂 出金 アカウント認証rmination:
An outdoor termination is a terminal attached to the end of the superconducting power cable to connect with electric facilities in遊雅堂 出金 アカウント認証lled in an environment at room temperature. Under the superconducting power cable system, it needs to have both the following functions: heat insulation for liquid nitrogen temperature and room temperature, and electric insulation for earth and high voltage.

(No遊雅堂 出金 アカウント認証 3)遊雅堂 出金 アカウント認証:
AC loss is ge遊雅堂 出金 アカウント認証rated when a superconducting power cable carries AC current due to flux movement inside the superconducting wire. With an Yttrium-based superconducting power cable, the main cause of AC loss is a flux trap caused by a longitudinal mag遊雅堂 出金 アカウント認証tic field due to the gap between wires, so it is 遊雅堂 出金 アカウント認証cessary to make the gap smaller and control the deterioration of the superconducting performance of the end of the wire. The AC loss was minimized in particular through controlling the deterioration of the superconducting performance of the end.

(No遊雅堂 出金 アカウント認証 4)遊雅堂 出金 アカウント認証mposite hollow insulator :
A composite hollow insulator is an FRP cylindrical core with excellent mechanical strength, where the aluminum fittings are strongly bonded to both ends of the cylindrical core and the exterior of the FRP core is coated with silicone rubber that has excellent electric insulation. A composite hollow insulator has a number of advantages including light weight, anti-fouling performance, explosion resi遊雅堂 出金 アカウント認証nce and workability in terms of assembly compared with porcelain shells.

(No遊雅堂 出金 アカウント認証 5) Jicable'11 - 8遊雅堂 出金 アカウント認証 International Conference:
Jicable'11 is an international forum for 遊雅堂 出金 アカウント認証e exchange of research and development results relating to insulated power cables and 遊雅堂 出金 アカウント認証eir accessories, from low voltage up to ultra-high voltage.

Refer遊雅堂 出金 アカウント認証ce

Outdoor termination for 275kV super遊雅堂 出金 アカウント認証nducting power cable