Abstract: Against the backdrop of increasing electricity demand in China, the scale of the power grid is constantly expanding. Substation maintenance, as an optimization measure for the power grid system, can analyze and control potential risks and hidden dangers in the power grid. Ensure stable operation of electrical equipment. This article mainly starts with hazardous points such as transformers, busbar switching, and DC circuits at the substation maintenance site, and proposes targeted safety control paths to facilitate the smooth progress of substation maintenance work.