In order to reveal the effect of output correlation of distributed generators (DGs) on the microgrid generation system reliability

the probability transformation of Nataf and the Gauss multi-numerical integration are used to obtain the mathematical model for the correlation obeying non-normal distribution. Then

on the basis of considering several elements affecting reliability

such as the force outage and the nonlinear output of DGs

an assessment model for microgrid generation reliability is proposed

and the Monte-Carlo method is used to solve the model. In the case

by analyzing the reliability indices under the influence of output characteristics of DGs

the ratio of total DG capacity versus load capacity and variation of primary energy correlation coefficient

the proposed model and method are validated.