AUTOMATION DEVICE FOR POST OF SECTIONING CONTACT AC NETWORK ON DISCONNECTORS Russian patent published in 2020 - IPC G01R31/08 H02H3/16 

FIELD: electricity.

SUBSTANCE: invention is related to means of automation of power supply of section for alternating current contact network. Into the device for automation of the section of the double-track section of the alternating current contact network on the controlled disconnectors in two directions with the first voltage transformer in the sectioning station bus are introduced at each connection of the supply lines of the contact network according to the current transformer and into sectioning bus section of second voltage transformer and vacuum circuit breaker with current transformer, equipped with protection and automation unit connected to secondary windings of voltage and current transformers and including two logic circuits, at that, each logic circuit is made in the form of two measuring protection elements, automatic measuring instrument, two power direction measuring elements, RS-trigger element, short-circuit detection measuring element, short-circuit monitoring measuring element, two comparison circuits, a position repeater element, three delay elements, two two-input elements of NOT, two-input and two three-input AND elements, three two-input and three-input elements OR and three actuators.

EFFECT: reduced time of disconnected state of traction network after short circuit.

1 cl, 1 dwg