The application discloses an optimization method and
system for photovoltaic access distribution network, and the method comprises the following steps: based on the photovoltaic construction, a certain number of populations are determined; through Newton-Raphson
power flow calculation, the distribution network operation parameters corresponding to each
gene individual are obtained; based on the distribution network operation parameters, a multi-objective function and a constraint condition, the
gene individuals are screened; the screened
gene individuals are iteratively calculated to obtain optimal
offspring of each
population; the optimal
offspring is introduced into an elite
population; if a set iteration end criterion is met, an optimal
individual gene representative photovoltaic access scheme is obtained; otherwise, the above operation is performed again; based on the distribution network operation parameters and a pre-established multi-objective function and constraint condition, the gene individuals are screened, the defect of immature convergence is overcome, and the
global optimization can be achieved in the photovoltaic access optimization process; the screened gene individuals are iteratively calculated to obtain optimal
offspring of each
population, and the local optimization is performed, so that the balanced global search and local search performance are achieved.