Abstract:To effectively formulate a scientific and efficient fault line inspection plan, two theoretical optimal models for fault line inspection schemes in distribution system via single/dual cooperative modes are proposed. In combination with the characteristics radial operation of distribution system, the optimal line inspection model for single-mode fault detection is first designed, and then its computation complexity will be analyzed. Subsequently, to meet field operation properties, a single-mode model based efficient collaborative line inspection model in dual mode is derived. This model can both take the minimum total line inspection length and a more balanced task allocation among teams into account. Finally, solution difference and their processes via Dijkstra and depth-first search algorithm(DFS) between two models are in detail discussed, and the system of IEEE 33-Bus are used as examples to verify the accuracy and efficiency of the proposed line inspection models.