The series compensation method is used to solve such problem as low voltage at the end of the traditional distribution network and the seasonal high and low voltage problems associated with small hydropower systems at the end of distribution network. The optimal model for series compensation position and capacity selection is set up and

on the basis of calculation of power flow

the software for determining series compensation position and capacity is developed based on the program of Matlab platform.It is shown by the typical case application that series compensation proposal obtained by the method can meet the requirements of power quality

improve transmission capacity of line and maximize the energy loss reduction.