Distribution Network Planning Considering Uncertainty of Incremental Distribution Network Access

With the continuous development of power system reform, the access of incremental distribution network will have a great impact on distribution network planning due to the internal uncertain source load. Considering the uncertainty of incremental distribution network access, this paper establishes a distribution network planning model. Firstly, the probability distribution function of DG, load, energy storage and other uncertain elements in the incremental distribution network is constructed, and the equivalent comprehensive model of the incremental distribution network is established. Secondly, taking the economic optimization as the objective function, a planning model considering incremental distribution network access is established. Finally, immune algorithm is adopted to solve the problem. The accuracy of the proposed method is verified by a 33 node test system.