Distribution Generators Planning Based on Point Estimate Method Considering Correlation of Input Variables

A multi-objective planning method of distribution generators (DG) based on point estimate method (PEM) considering correlation of input variables was put forward. The optimal function was lowest cost and best voltage index, while the decision variables were siting and sizing of DG. Improved point estimate method was employed to calculate probabilistic power flow. Considering that PEM requires independent input variables, an improved PEM considering correlation of input variables was proposed. IEEE 33 buses distribution system was employed to verify the proposed method.