Optimal allocation of generalized power sources in active distribution network is researched. A simple index of voltage stability is put forward. Considering the investment and operation benefit, the stability of voltage and the pollution emissions of generalized power sources in active distribution network, a multi-objective optimization planning model is established. A hybrid intelligent particle swarm optimization algorithm is proposed to solve the optimal model. In order to improve the global search ability, the strategies of fast non-dominated sorting, elitism and crowding distance are adopted in this algorithm. Finally, the model and algorithm by different load level of IEEE-33 node and PG&E-69 node are tested to find the best configuration of GP. The computed result shows that with the generalized power reasonable access to the active distribution network, the investment benefit and the voltage stability of the system are improved, and the proposed algorithm has better global search capability.