FIELD: electricity.
SUBSTANCE: reduction of working current is monitored in the line of the primary power source per a value defined by the sectional load in the line adjacent to the islanding system of the automatic switchover to reserve source (ARS). Upon the time required for actuation of the ARS islanding system it is expected that working current in the reserve power source is increased per the value it was decreased in the line of the primary power source; when this increase is observed the conclusion is made about automatic switchover of the mains reserve upon activation of sectionalising disconnector of the islanding system in the ring network line. The suggested method allows receiving data on switchover to the reserve source upon activation of sectionalising disconnector of the islanding system in the ring network line.
EFFECT: expanded operating performances.
2 dwg
