“…In addition, due to the harsh geographical and climatic conditions in many substations, it is difficult for manual inspections to achieve effective inspection work [1] . Under the guidance of Industry 4.0 and smart grid policies, the research on substation inspection robots has rapidly developed, and the main task of their path planning is to carry out global planning in an environment with known obstacles [2] . At present, the main methods involved in environmental modeling for global path planning problems include visual graph, free space approach, and grids; The main methods of path search strategy include Dijkstra algorithm, Rapid exploring Random Tree (RRT) algorithm, Probabilistic RoadMap (PRM) algorithm [3] , A× Algorithms [4] , etc.…”