INTEGRATED APPARATUS FOR MELTING ICE AND COMPENSATION OF REACTIVE POWER Russian patent published in 2014 - IPC H02G7/16 H02J3/18 

FIELD: electricity.

SUBSTANCE: integrated apparatus has two three-phase bridge converters on fully controlled semiconductor rectifiers, which are shunted by anti-parallel connected diodes, a capacitor bank at the direct current side of the converters, a first three-pole switch and two series-connected three-phase chokes, one of which is connected in parallel to a second three-pole switch - at the alternating current side. When melting ice, the first converter operates in a controlled rectifier mode and the second converter operates in self-contained voltage inverter mode, the output of said inverter being connected through a third three-pole switch to wires of the overhead power line which are closed at the opposite end, for simultaneous melting of ice thereon with low-frequency alternating current, where the inductive component of the resistance of the wires almost has no effect on the effective melting current value.

EFFECT: easy organisation and shorter duration of the melting process with simultaneous reduction of the amount of additional switching equipment.

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