Abstract: With the continuous growth of regional load demand and ongoing adjustments to grid structure, the planning of 110 kV and 220 kV power networks faces multiple requirements, including coordination between supply voltage levels, matching of substation and network scale, verification of operating modes, and integrated configuration of automation systems. This paper takes 110 kV and 220 kV power grids as the research objects and analyzes the embedded application of electrical automation technology in the planning stage. It systematically examines aspects such as load zoning identification, substation capacity estimation, dispatching system configuration, protection logic coordination, communication link design, and planning scheme verification. A research framework is constructed that covers pre-planning identification, planning-stage configuration, and post-planning validation. The study concludes that integrating electrical automation technology into the early stages of power grid planning helps improve the accuracy of planning parameter determination, enhances the coordination of grid structures, and strengthens the linkage between subsequent operation modes and construction implementation, thereby providing more engineering-oriented technical references for 110 kV and 220 kV power grid planning.