FIELD: engineering of electric networks, possible use for determining branch line with closing onto ground in distributing networks with isolated neutral line.
SUBSTANCE: aforementioned method includes registration of voltage of zero series on buses of low voltage of power transformer, while if voltage of zero series appears one of phases of low voltage buses is closed onto earth through current-limiting resistance, and if in the moment of enabling this phase in none of branch lines current increase appears, then phase is disabled and any other one is enabled, and increase of current in one of branch lines in the moment of enabling the phase marks its closing onto ground.
EFFECT: increased reliability of electric power output for consumers when determining line with closing onto ground by excluding unfounded disconnection of other lines having no closing onto ground.
1 dwg
