Automatic prediction and evaluation method for power distribution reliability index of power distribution network

Disclosed is an automatic prediction and evaluation method for a power distribution reliability index of a power distribution network. The automatic prediction and evaluation method for the power distribution reliability index of the power distribution network is based on a primary wiring diagram generated by a CIM (common information model) standard graph model library, a switch needing to be switched off in overhaul is arranged on a wiring diagram, whether a circuit carries electricity after the switch is switched off is judged automatically, islands are defined automatically, distribution boxes to which every island is related are automatically detected, predicted values of urban power distribution reliability indexes and predicted values of urban and rural power distribution reliability indexes are automatically calculated and are compared with a standard value of the urban power distribution reliability indexes stipulated by state grid and a standard value of the urban and rural power distribution reliability indexes stipulated by the state grid, and therefore influences of overhauls on the power distribution reliability indexes can be evaluated. The control method takes place of manual calculation and analysis, is high in working efficiency and is not likely to make mistakes and can better guide improvement of reliability of a power distribution network.