Abstract: With the transformation of the energy structure,the development of new energy has directly promoted the construction of long-distance high-voltage transmission grids,which has further expanded the construction scale.Under the above background,pole and tower faults are becoming more frequent,and the direct or indirect economic losses caused by them are also getting higher and higher.Based on this,this article introduces a comprehensive on-line monitoring system for transmission towers,which effectively and accurately grasps the operating status of transmission lines in the pipeline area,uses grounding current to locate and classify the faults of towers and transmission lines,which can prevent major power outages.

Key words: tower, transmission line, on-line monitoring, grounding current, fault location