AC power distribution network topology identification method based on breadth-first search algorithm

The invention provides an AC power distribution network topology identification method based on a breadth-first search algorithm, and the method comprises the steps: collecting the voltage, current and power measurement values of each node, and calculating the power change increment of each node; sorting according to the power, and selecting a maximum power node as an initial node; calculating voltage correlation coefficients of all nodes and the initial node, and selecting nodes with large correlation coefficients to form an adjacent node alternative set by adopting a breadth-first search principle; searching nodes directly connected with the initial node in the adjacent node alternative set by taking the node power change increment and the current sum as judgment bases, selecting networkbranch nodes as the initial nodes, repeating iteration until all the nodes are searched and the connection relationship is determined, stopping the search algorithm, and obtaining the AC power distribution network topology.