Abstract

Significant improvements have been made in a previously developed 500 kV, 2000 a HVDC circuit breaker. These improvements have increased the current interrupting capabilities to 4000 A DC and more and have decreased the fault clearing time to the order of AC breakers of similar voltage ratings. The result is a HVDC circuit breaker that is built using well-proven AC power system components. It is modular in design so as to be suitable for a wide range of system voltages and energy levels.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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