METHOD OF DETECTING FAULT IN 6( 10 )-35 kV ELECTRIC CIRCUIT WITH ISOLATED OR COMPENSATED NEUTRAL POINT Russian patent published in 2007 - IPC G01R31/08

Abstract RU 2305293 C1

FIELD: electric measuring technique.

SUBSTANCE: phase of line with damaged isolation is revealed, which phase is short circuited against ground, and parameters of damaged phase are measured. Natural frequency of transient process of discharge of capacitance of damaged phase and natural frequency of transient process of additional charge of conductance of non-damaged phases, as well as sequent amplitudes of discharge of damaged phase and voltage in neutral point are used as parameters to be measured. Distance to damaged site is found on base of measured parameters.

EFFECT: improved precision; higher speed of operation.

2 cl, 2 dwg

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RU 2 305 293 C1

Authors

Andrianova Ljudmila Prokop'Evna

Bajburin Ehduard Ramilevich

Dates

2007-08-27—Published

2006-04-03—Filed