Fault current limited system with current splitting device

摘要

A fault current limiter system including a fault current limiter and a variable shunt current splitting device. The current splitting device includes first and second conductive windings, wherein the first conductive winding is connected in parallel with the fault current limiter and is configured to carry current in a first direction. The second conductive winding is electrically connected in series with the fault current limiter and is configured to carry current in a second direction opposite to the first direction so that the reactance of the first winding is negated by the reactance of the second winding during steady state operation of the fault current limiter system. Thus, a first portion of a steady state current is conveyed through the fault current limiter and a second portion of the current is conveyed through the current splitting device. The steady state current load on the fault current limiter is thereby reduced.

主权项

1. A fault current limiter system comprising:
a fault current limiter; a shunt electrically connected in parallel to the fault current limiter; and a current splitting device comprising first and second conductive windings wound about a core, wherein the first conductive winding is electrically connected in parallel with the fault current limiter and the shunt, and the first conductive winding is configured to carry current in a first direction, and wherein the second conductive winding is electrically connected in series with the fault current limiter and the shunt, and is configured to carry current in a second direction opposite to the first direction such that a first magnetic field associated with the first winding is coupled with a second magnetic field associated with the second winding during steady state operation of the fault current limiter system.