Application of Improved Adjacency Matrix Multiplication in Distribution Network Flow Calculation

Back/forward sweep flow algorithm is a optimal way used to calculate loss for distribution economic operation. Combined the unique radial characteristic of distribution network, this paper propose a back/forward sweep distribution load flow algorithm based on network layer structure. Analyze the layer structure of the network nodes through the adjacency matrix multiplication and subtraction and the row vector corresponding to root node in created matrix, based on which get a layer matrix M*.M* as a selection operator simplifies the back/forward load calculation formulas. Reduce the computational complexity and increase the calculation efficiency. The result of IEEE33 nodes indicates that the algorithm proposed is valid.