(School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China)

As an advanced distribution automation application module, network reconfiguration should meet the requirement of rapidity to achieve online application. However, many distribution network reconfiguration methods are unable to meet the requirement for pursuit of global optimization or repeated power flow calculation. A reconfiguration method of rapidly reducing active power loss based on dual feeders is introduced. The method uses active power loss estimation formula to deduce the optimal transfer load and find the most appropriate segment switch in dual feeders, while avoiding repeated power flow calculation in completing reconfiguration within dual feeders. Based on the whole network reconfiguration, all dual feeders in the network are ranked from small to large by the voltage difference between both sides of the contact switch. In the process of whole network reconfiguration, optimization flags should be marked on feeder pairs to avoid dead cycle and serve as a sign of ending the reconfiguration. Finally, the distribution network model of 13 nodes and 185 nodes are programmed for calculation and the result shows the rapidness and effectiveness of the method, which can meet the reconfiguration requirement of online application. This work is supported by Fundamental Research Funds for the Central Universities (No.11MG13).