In order to address the issues on microgrid reliability assessment brought by the diversification of terminal modes
a comprehensive evaluation method based on the participation-weighted rank-sum ratio (PWRSR) is proposed. Firstly
the reliability assessment index system is established from the main dimension and interactive dimension
and two new indictors
“load-wind-PV ratio” and “load-storage capacity ratio”
are proposed. Then
game theory is used to combine analytical network process (ANP) with entropy weight method (EWM) to obtain the optimal combined weights of each indicator. To better reflect the impact of different terminals on the reliability of the microgrid
participation functions of each indicator under different terminal modes are introduced according to the indicator types. Finally
based on the differences in microgrid terminal modes and indicator types
the PWRSR method is proposed to calculate the comprehensive evaluation value. Simulation verification is carried out using actual data from a certain city. The results show that the proposed method can fully consider the cross-impact within the microgrid under different terminal modes
resulting in a more comprehensive and accurate assessment.