FIELD: electrified railways.
SUBSTANCE: invention is designed to reduce induction effect of ac traction systems on to wire communication lines. In proposed method use is made of additional regulated source of compensating voltage and additional wire grounded from one side. Additional controllable source of compensating voltage in antiphase to supply voltage of traction system is connected to additional wire at no traction load in feeder zone, and is disconnected at appearance of traction load. So as a result of additional of electric fields of supply voltage of traction system and source of compensating voltage at no load in feeder zone, electric effects of traction system onto adjacent wire communication lines are reduced practically to zero. Additional controllable source of compensating voltage is connected to additional wire after disconnection of grounding circuit and by results of comparing of sum of supply and compensating voltage with supply voltage.
EFFECT: improved efficiency of reduction of effect of electric traction systems on to channels of wire communication lines.
1 dwg
