Author: Amalia Ballarino

Comparative study for a superconducting and normal conducting power transmission line

A. Ballarino, D. Bozzini, M. Mylona, V. Mertens L. Tavian — CERN

FCC Week 2018, Amsterdam

Degraded scenario A: one of the three sources not available, machine in full operation
Dd

Degraded scenario B: one of the three sources not available, machine in stand-by mode
Dd

Voltage level (kV)	Nominal current (A)
	Nominal	Degraded A	Degraded B
63	817	2294	1248
135	390	1095	596
400	129	361	197

≤ 63 kV, SC Line

135 kV, Resistive Line

Resistive AC

Superconducting DC

Superconducting AC

Resistive 3-phase system
3 AL, 800 mm2 conductors
Electrical insulation XLPE cross-linked polyethylene
Installed in trefoil configuration
External cable diameter 83 mm
Dedicated refrigerator (close circuit)

Length: up to about 10 km
Shaft depth: from 52 m to 578 m

REBCO/BSCCO 2223 Cable
Flexible and compact line
GHe cooling (T up to ….)
Dedicated refrigerator
(close circuit)