Distributed high-precision transmission line travelling wave positioning system

The invention provides an application method for a travelling wave positioning system of a distributed high-precision electric transmission line. The method comprises the following steps: receiving power frequency failure current transmitted in an electric transmission line wire by an on-site testing device, performing analog-to-digital conversion to the power frequency failure current to obtain digital waveform signals, uplinking the digital waveform signals to an upper computer, and determining the accurate position of trouble spot by a supervisory system installed in the upper computer via calculation. The method remarkably reduces the travelling wave positioning error and improves the positioning accuracy.