In this paper

serial number of node and branches is optimized by fully making use of structure features of 10 kV radiation distribution network.The flow calculation of distribution network can be achieved directly by the use of algebraic equation with branch impedance parameters without matrix transformation.Based on this

reactive power optimization algorithm of the minimum net loss is studied so to determine the optimal installation position pole capacitor and its compensation capacity.The power flow and reactive compensation algorithm of the distribution network can be applied to any complex distribution network.It is shown in the calculation example that the method is simple and effective

not only reduced the loss of distribution network line

but also improved the supply voltage quality and power factor as well as had definite application value.