METHOD FOR DETECTING SITES OF DISCONNECTION OF PHASE CONDUCTORS IN MULTIBRANCH NETWORKS WITH ISOLATED NEUTRAL Russian patent published in 2018 - IPC H02H5/10 

FIELD: electrical engineering.

SUBSTANCE: according to the method, a power transformer, voltage transformer with a winding connected in open triangle, switch controlling the line with branches to which step-down transformers are connected, the secondary windings of which are connected to the voltage meters with the transmitters are connected to the buses of the transformer substation. Also, the voltage meter with the transmitter is connected to the winding of the voltage transformer connected in open triangle. In the event of a voltage deviation at the outlets of the step-down transformers and at the outlet of the winding connected in open triangle, from the operating level, the voltage meters via transmitters send a signal to the processing unit, which generates a signal to alert operational personnel or to disconnect a damaged connection.

EFFECT: higher work reliability of power transmission lines with voltage of 6–35 kV.

1 cl, 1 dwg