The magnet of No.2 superconducting fault current limiter prototype
LTS magnet £¨MLS-450/10/1.5£©
HTS magnet£¨MHS-450/10/1.5£©
HTS magnet£¨MHS-450/10/1.5£© |
Superconducting magnet
During the R & D process, Innopower gained the technological knowhow in developing superconducting magnet, and successfully developed a number of high and low temperature magnets for different levels and various applications.
(1) For the superconducting fault current limiter (SFCL)
Superconducting magnet is one of the key components of a SFCL. The superconducting magnet in SFCL has two main features, which are different from other kinds of superconducting magnet. First, the magnet makes the iron-core saturated by magnetizing the iron-core. Secondly, the magnet couples with AC core through iron-core, so inductive voltage will appear around the DC side; as the equipment will be used in high-voltage power grids, high inductive voltage beside DC may bring on a mortal threat to the magnet and even the control system. The superconducting magnet and its control circuit designed by Innopower take full account of the two features, and thus the products meet the design requirements in both practicality and reliability.
 |
Height |
0.88m |
Inner diameter |
1.28m |
Outer diameter |
1.34m |
Weight |
350kg |
Number of rings |
44 |
Total length of tapes |
17.6km |
Rated ampere-turn |
141,000 |
Center field with 70,000 ampere-turn
(hollow coil) |
800Gs |
|
Parameters and photo picture of the superconducting coil of the 35kV/90MVA superconducting fault current limiter
(2) For other applications
Parameters of low-temperature superconducting magnets
£¨Model£ºMHS-450/10/1.5£©
Wire |
Low-temperatureNb-Ti-wire |
Wire specifications |
¦µ1.5mm painted-wire£¬Ic2000A |
Turns |
400 |
Height (mm) |
150/120£¨framework /bobbin£© |
Outer diameter (mm) |
175/140£¨Cover / bobbin£© |
Inner diameter (mm) |
120/125£¨framework /bobbin£© |
Parameters of Small high-temperature superconducting magnets
£¨Model£ºMHS-450/10/1.5£©
Wire |
Height£¨including the height of terminal£© |
Inner diameter |
Turns |
BSCCO 2223 |
145mm/180mm |
116.2mm |
516 |
|
Cryostat of the superconducting fault current limiter
Cryostat of the LTS magnet
Cryostat of the HTS magnet
|
Cryostat
Cryostat is an adiabatic container whose double-wall interlayer stays as a vacuum. It is used to maintain cryogenic fluids or as an attemperator. The superconducting magnet must be equipped with the appropriate cryostat for applications. Innopower has developed cryostats with different shapes and sizes.
The designed cryostat of the 35kV/90MVA superconducting fault current limiter
No. |
Inner diameter (mm) |
Outer diameter (mm) |
Temperature (K) |
Pressure direction |
1 |
1230 |
1234 |
300 |
Inner pressure |
2 |
1294 |
1306 |
77 |
External pressure |
3 |
1506 |
1511 |
77 |
Inner pressure |
4 |
1571 |
1581 |
300 |
External pressure |
Cryostat of the 35kV/90MVA superconducting fault current limiter
|
Chinese
