Abstract: In order to improve the carrying capacity and resilience margin of the distribution network system

containing microgrid，a topological resilience optimization model of the distribution network system containing

microgrid was established to achieve the resilience optimization objective of the distribution network containing

microgrid through dynamic reconfiguration of the distribution network topology. At the same time，in response to

the shortcomings of traditional particle swarm optimization，which is prone to falling into local optima and has a

slow convergence speed，a quantum particle swarm algorithm with global search capability and good search

efficiency was adopted for solution. The decimal coding technique was also applied to optimise the quantum swarm

algorithm to reduce the particle length and infeasible solution generation. Finally，the designed strategy was tested

on a modified IEEE 33-node radial distribution system，and the algorithm was compared with other traditional

intelligent algorithms to verify the good optimisation performance and effectiveness of the designed strategy for

distribution systems containing microgrids.

      Key words: distribution grid reconfiguration；microgrid；resilient grid；quantum particle swarm optimization

（QPSO）