High-proportion renewable distributed generator(DG)connecting into grid is blocked by the regulating ability deficiency of existing distribution networks. Under the trend of power electronic devices represented by the intelligent soft point(SOP)

a tri-level planning model for DG and SOP of active distribution network is proposed to coordinate the benefits for DG operators and distribution companies while considering the combination of system planning and operation optimization in active distribution network. The upper level aims at maximizing the DG operator revenues of unit capacity for DG planning. The middle level is devised to minimize the annual comprehensive cost of distribution companies for SOP planning. The lower level aims at minimizing the operation cost in each scenario to optimize the system operation condition and deciding the DG accommodation capacity back to the upper and middle level. Scenario analysis technique is utilized to deal with the randomness of DG and load and a hybrid algorithm combining genetic algorithm and conic planning is designed to solve the model. Finally

compared with two cases on IEEE 33-node system

which are merely planning DG and successively planning DG and SOP

the result shows that the proposed model has the advantages in coordinating benefits for different stakeholders and improving the feasibility of planning schemes.