METHOD FOR PROTECTING MULTIPLE-CABLE LINE OF ALTERNATING-VOLTAGE NETWORK AGAINST SINGLE-PHASE GROUND FAULT Russian patent published in 2007 - IPC H02H3/16

Abstract RU 2312442 C2

FIELD: power supply and protection of multiple-cable lines.

SUBSTANCE: proposed method that can be used in 6-35 kV insulated-neutral alternating-voltage networks involves comparison of zero-sequence currents through each cable of multiple-cable line, single-phase ground fault being identified by current through particular cable and line greatly differing from currents flowing through other cables.

EFFECT: enhanced reliability of fault detection at reduced outage time.

1 cl, 1 dwg

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RU 2 312 442 C2

Authors

Kashkalov Vladimir Ivanovich

Dates

2007-12-10—Published

2005-11-21—Filed