Concept Design Review (CoDR). Shore Station DC Breaker Cable model Transient Analysis Components. NEPTUNE. Shore Station. Configuration of Shore Station. SHORE STATION… Power supply Selection. Off-the-shelf Buck regulator. General ratings: Output Voltage = 10 kV DC
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Potential vendor for shore stations
Manufacturer: Diversified Tech
Model: Custom made.
Potential manufacturer: Kilovac or Jennings
CDC CIRCUIT BREAKER
DC CIRCUIT BREAKER…Stage 1- Normal closure
DC CIRCUIT BREAKER…Stage 2 - Interruption
Current is routed through C
Size of C is selected to prevent restrikes
DC CIRCUIT BREAKER…Stage 3 – Discharging of Capacitor
Cap is discharged through R2
to set the circuit for next switching
DC CIRCUIT BREAKER…Stage 4 – Soft Starting
Soft starting resistance R1 reduces
the inrush current during energization
DC CIRCUIT BREAKER…Stage 5 – Normal closure
a) the core
b) the sheath.
c) the insulation.
= Total flux associated with the cable.
= Total cable current.
The total cable resistance is thus given by:
is the permittivity of the insulator.
d is the outer radius of insulator
c is the inner radius of insulator.
R = 0.098 m/km.
L = 2.221 mH/km.
comp = 5.1753*10-8 m.
comp = 9.0788
N4Simulation Circuit… Switching Timing
t = topen
t = (topen-t)
t =( topen +t)
Switch open: initial arcing
Capacitor chargingSimulation Circuit… Restrike
Initial ArcingSimulation of Restrikes