Abstract

The theoretical concept of the Pramod scheme for ultra-high-speed (UHS) protection of EHV transmission lines is described. The principle is based on detection of the fault-induced high-frequency signals of the order of kilohertz. A technique for the digital simulation of the transmission line and the high-frequency detecting circuit is explained, and the results are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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