On-line ice-melting apparatus

An online ice melting apparatus, applied for melting ice on a three-phase line, comprising an adjustable reactor, a grounding transformer, a controller, and an auxiliary circuit;

• wherein the grounding transformer is electrically connected to the three-phase line and a first terminal of the adjustable reactor separately, the auxiliary circuit is connected between a second terminal of the adjustable reactor and a line of any phase of the three-phase line, and the grounding transformer, the adjustable reactor, the auxiliary circuit, and the line of the any phase of the three-phase line form a first control loop;
• and
• wherein the adjustable reactor comprises a working winding, a control winding, and a short-circuit winding;
• the working winding is connected between the grounding transformer and the auxiliary circuit, the controller is electrically connected to the control winding and the short-circuit winding separately, and the controller is configured for adjusting a reactance value of the control winding and/or a reactance value of the short-circuit winding to adjust a reactance value of the working winding so as to control a current of the first control loop.