Protection of branched power grid network with distributed load from neutral wire breakage
A possibility of extending the implemented protection list of circuit breakers trip units based on the digital processing of signals from the current sensors is justified. The new techni-cal solution allowing in a sliding monitoring mode to create of circuit breakers operation crite-rion at single-phase electric power consumers protection from neutral failures is proposed. Feasibility of neutral failures fact identification by the harmonious analysis of phase currents spectrum with the nonlinear distortions presence is proved