Forward/backward sweep method based on map structure for power flow calculation of distribution system

Power flow calculation is very important to distribution system management, and more and more attention are paid to calculation speed and accuracy due to the booming smart grids which allow interconnection of distributed generation of different kinds. A new forward/backward sweep method based on map structure is presented, which can calculate power flow of all complex radial distribution systems. Special coding of nodes, such as hierarchical coding, is not necessary, and results can be obtained directly through a global search of line map. Test shows that the method is timesaving and insensitive to the system scale, which helps the popularity of smart grids.