A power island micro grid Optimization Method

The present invention discloses a power island micro grid configuration optimization is first directed to each power supply microgrid as a particle, the number of types of power xi as a group of particles, the particle group establishment; obtaining each particle Eti in charge of planning the initial construction costs during the planning period, the issued fuel costs incurred Oti as well as operation and maintenance costs Mti; then determine whether the constraint condition is met, to adapt to meet the current target function to calculate the PSO degree; not satisfied, the penalty function to adjust the current fitness group of particles, the optimum particle group is selected according to fitness calculation particle group; after selecting the optimum particle group, until after a set number of iterations are output from An optimum solution to give sea-island micro power grid optimization. Particle swarm optimization for solving an optimal power configuration selection capacity, reducing investment costs within a micro-grid in the whole life cycle, improve the stability of the microgrid.