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High-temperature superconductor technology(HTS) is the key technology fortomorrow’s electricity market. Compared with copper conductors, HTS ceramic cableshave a number of signifi cant advantages. For example they can conduct electric current without resistance at app. 200°C below zero. Transmission capacity is five timeshigher than that of conductors made of copper, while current loss is reduced to one tenth. The development of HTS cables is inseparably linked to the name nkt cables. However, nkt cables is not just one of the ...
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Poznámky redaktora
3-0.00 2.4
Cable core
Conductor, BSCCO laminated, hollow 1
Copper stabiliser, cross section mm2
0 60
Cryoflex® insulation 2.5 3/1.7 5.5-1.5 3/1.3 3.02 0.1
Screen, copper tape, cross section mm2
80 110 120 120
Outer cable core diameter 68
Weight, HTS cable core, phases kg/m 3.6 0.5 3/1.019 0.3
Codes
HT: HTS triaxial cable design
B: BSCCO-type HTS conductor laminated
with metal sheath
C: Added copper stabiliser
for over-current protection
BB CRCR WMWM 2Y2Y
Construction Code
Type HT-BC-CRS(WM)2Y 7.5
Thermal insulation
Semi-right corrugated duct, ID/OD 60/110 60/110 8/13 8/13 8/13
PE outer sheath thickness 3
Total 150 150 150
Termination 160 160 160
Permissible pulling force 15
Bending radius during laying/at terminations (min) 3/1.5 3/1.2 1.026 0.6/13.5
Heat leak, duct section W/m 1.3-0.2 5.5
Heat leak, joints W/ea.5 7
Permissible pulling force 20
Bending radius during laying/at terminations (min) 3/1. phase-to-ground µF/km 3.2-0.5 5.1 2.5 1. single phase mH/km 0.0 3. 15
Electrical data
Conductor resistance Pnom
µOhm/m <10 <10 <10 <10 <10
Conductor loss Pnom
*(Toperation
67 W/m/ph 0.1 2.3 0.2
Inductance, eqv.5 3/1.5
AC loss power factor, P=k*ln
3 3
Capacitance, eqv.2 0.2 kV
Dimensions/Ampacity, 1.-1.1 2.017
Power rating (continuous load) 13,2 kV
1 circuit/2 circuits MVA 29/57 6/91 57/11 69/137 78/155
Construction code: HT-BC-CRS(WM)2Y
Construction code with
rigid thermal insulation: HT-BC-CRS(RL)2Y
Construction code with YBCO-type
HTS conductor: HT-YC-CRS(WM)2Y
CR: Cryoflex®
electrical insulation
S: Copper wire tape screen
(WM): Corrugated “wellmantel” semiflexible
thermal insulation
2Y: polyethylene outer sheath
HT
*Conductor loss Pnom
depends operation temperature, 67-79.017 0.2 1.5 1.1 2.5 6.5 3/1.9 0.5 3.25 2.5 3/1.5 3/1
