Looped network detection method based on bus depth conflict calculation

The invention relates to a looped network detection method based on bus depth conflict calculation. The looped network detection method comprises the following steps: traversing the calculating bus in the distribution network active island in a looped manner; judging whether the calculating bus i and looped network exit; searching in reverse flow from calculating buses j and k to calculating with the depth of O, and storing the calculating buses of the two paths into two arrays respectively; deleting one repeated calculating bus in the two arrays; determining all the calculating buses in the looped network; converting all the calculating buses to nodes to obtain all the nodes in the looped network; storing the looped network into a two-dimensional array as one row a nodes; storing all the loops in the active island and nodes in every loop by the two-dimensional array after all the calculating buses are traversed in a looped manner; and deleting repeated loops in the two-dimensional array and outputting final two-dimensional array. The looped network detection method disclosed by the invention can judge the existence of two classes of looped networks, and identify all the nodes in the loops, so that operation and control personnel of the distribution network can detect with a purpose to modify wrong telecommand data.