In recent years

series compensation device has found more and more application in the distribution network. It is necessary to study the configuration scheme of the series compensation device in the distribution network so to meet the operational requirements of the distribution network in various conditions.However

the load on the distribution network has large fluctuations. Power utilities hope the series compensation device can achieve both loss reduction and low voltage improvement of line at different load conditions of the distribution network. To this end

a kind of mufti-objective optimization model with comprehensive consideration of load operation condition of distribution network is set up in this paper. The line loss rate and voltage deviation are taken as the optimization goal

thereby obtaining the Pareto frontier by NSGA Ⅱ algorithm. Then

the optimization results under arbitrary load rate are obtained from the Pareto solution set by TOPSIS method. The annual power flow calculation of the distribution network is performed for the optimization results under all load rates and the lowest line loss rate is selected as the final optimization scheme. Finally

the model and algorithm are verified and analyzed in the 34-node distribution network example and the robustness of the calculation results is illustrated.