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This paper proposes a novel protective relaying technique for multi-terminal HVDC system based on the high frequency components in the current signals received at each end of the DC transmission line. A simple model of a mono-pole, ground return, MTDC system is built in ATP draw using a distributed parameter, frequency dependent overhead line model. For this system, the high frequency content in the...
This paper describes a novel algorithm for feeder earth-fault protection applicable in compensated and unearthed mediumvoltage networks. The suggested algorithm provides good protection sensitivity and very secure discrimination between faulty and healthy feeders even in the most challenging faults with highly distorted signals such as restriking earth faults. The operation of the novel method is...
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