INTERGRATED APPARATUS FOR COMPENSATION OF REACTIVE POWER AND MELTING ICE COVER (VERSION)

摘要

FIELD: electricity.;SUBSTANCE: apparatus has a three-phase bridge converter on fully controlled semiconductor rectifiers, which are shunted by anti-parallel connected diodes, a capacitor bank at the direct current side, 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. According to the first version, the capacitor bank in reactive power compensation mode is connected by contacts of a third three-pole switch, which are open in ice melting mode, to emitter (collector) leads of rectifiers of the converter which in that mode are connected through a fourth three-pole switch to wires of the overhead power line for controlled melting of ice with alternating current. According to the second version, the capacitor bank in reactive power compensation mode is connected by contacts of the third and fourth three-pole switches, which are open in ice melting mode, to emitter and collector leads of rectifiers of the converter which in that mode are connected through fifth and sixth three-pole switches to wires of two overhead power lines for simultaneous controlled melting of ice thereon with alternating current.;EFFECT: shorter duration of the melting process with simultaneous reduction of the amount of additional switching equipment.;2 cl, 4 dwg