The existing transmission line melting method can not solve the problem of power outage during melting ice. This paper uses the characteristics of single-phase grounding fault to be powered for a period of time to achieve non-stop electric melting. The magnetic flux controllable adjustable reactor, wherein the secondary side detects the real-time line current, controls the melting current to be greater than the critical melting current, and adjusts the impedance by adjusting the magnitude of the secondary side injection current, and the melting current can be adjusted. The ice melting time is also controllable, and this method can therefore be applied to a variety of lines.