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The paper presents an adaptive procedure for digital distance protection device that allows to compensate for the negative influence of the reactance effect, caused by fault resistance and pre-fault power flow. The procedure utilizes locally measured phase currents and voltages and has been designed to operate with double-circuit power lines. The algorithm calculates on-line shift vector components...
This paper presents accurate fault location algorithm for series compensated lines. Use of two-end current and voltage signals with a more general case of unsynchronised measurements is considered. Two ways of synchronisation of measurements are presented. The subroutines of the developed algorithm are formulated with use of the generalised fault loop model, leading to compact formulae. High accuracy...
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