The impact of distributed generation（ DG） access on distribution network is taken into account

an improved genetic algorithm for uncertain distribution network reconfiguration is proposed. Firstly

based on DG output probability model

a power supply capability index opportunity constraint model considering uncertainty is presented

and the distribution network reconfiguration model considering chance constrained condition is established; then

the initial population generation and crossover operation of genetic algorithm is improved to make it suitable for the uncertain distribution network reconfiguration model. Finally

a simulation method for calculating the chance constrained of power supply capability index is presented. The 33-node example shows that the method is able to take the uncertainty of DG output and distribution network load into account on the basis of traditional genetic algorithm

The reconfiguration scheme can meet the index of power supply capability and improve the antirisk capability of the reconfiguration scheme.