With the continuous expansion of the power grid scale and increasingly complex operating environment

traditional single inspection methods are no longer sufficient to meet the efficient and safe operation and maintenance requirements of transmission lines. This paper takes the synergistic application of three-dimensional operation and maintenance mode and live-line work as its theme

focusing on elaborating on risk identification and assessment

safety management systems and emergency response plan formulation

personal protective measures and team management strategies in live-line work

as well as the linkage between intelligent inspection and live-line work

the application of drone inspections in live-line patrols

and data-driven operation and maintenance decision-optimization methods. Through multi-level

multi-method coordination

this approach achieves precise early warning and rapid response to potential faults

enhances operation and maintenance efficiency

and minimizes safety risks to the greatest extent

providing a feasible technique and management framework for ensuring the reliable operation of the power grid.