With the access of large-scale clean energy and in face of a lot of reconstruction strategies, the problems of complexity and poor convergence exist in the traditional investment planning optimization model which includes optimal power flow (OPF) and network safety constraint (NSC), as well as the iteration calculation of performance index. Thus, an optimal investment decision model of distribution network (DN) is proposed based on correlation mining between reconstruction strategies and reliability index. Based on the correlation constraint, the multi-year rolling investment model is established respectively aiming at maximizing the index and minimizing the total investment cost to obtain the optimal investment plans. Finally, an example is given to verify the rapidity, feasibility and effectiveness of the investment model.
Keywords multi-year investment decision model of distribution network, correlation constraint, reconstruction strategy, reliability