Fremgangsmöte for selektiv pövisning av resistansfeil i fordelingsnett for elektrisk energi

Method for the selective detection of a resistive defect on a departure line of an electrical power-distribution network comprising an arrival line (12) powered by a transformer (11) and several departure lines (1-8) each departure line being fitted with a homopolar current detector (9), characteris...

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Hauptverfasser:	GRIFFEL, DANIEL, BERGEAL, JEAN
Format:	Patent
Sprache:	nor
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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creator	GRIFFEL, DANIEL BERGEAL, JEAN
description	Method for the selective detection of a resistive defect on a departure line of an electrical power-distribution network comprising an arrival line (12) powered by a transformer (11) and several departure lines (1-8) each departure line being fitted with a homopolar current detector (9), characterised in that the homopolar current (i1-i8; 1'1-i'8) of each departure (1-8) is continuously measured in amplitude and in phase shift with respect to a reference magnitude, in that the vector sum of the set of homopolar currents of the departure lines is calculated, and the phase-shift of each homopolar current with respect to the phase-shift of the said vector sum is monitored, the presence of a defect being detected when the said phase-shift of a homopolar current exceeds a predetermined negative threshold.
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subjects	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
title	Fremgangsmöte for selektiv pövisning av resistansfeil i fordelingsnett for elektrisk energi
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