СПОСОБ ЗАЩИТЫ ОТ ОДНОФАЗНОГО ЗАМЫКАНИЯ НА ЗЕМЛЮ МНОГОКАБЕЛЬНОЙ ЛИНИИ В ЭЛЕКТРИЧЕСКОЙ СЕТИ ПЕРЕМЕННОГО НАПРЯЖЕНИЯ

摘要

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