Power distribution network reactive power optimization method and system considering source load uncertainty

The invention belongs to the technical field of power system reactive power optimization, and particularly relates to a power distribution network reactive power optimization method and system considering source load uncertainty. The method comprises the following steps: S1, by taking minimization of active power loss and voltage deviation of a power system as a target function, introducing adjustable transformer taps, static var compensators, the group number of parallel static capacitors and battery energy storage as control variables, and constructing a reactive power optimization model; s2, improving a mayfly naiad algorithm, adopting Tent chaotic mapping as an initial mayfly naiad position, and fusing Levy flight and a random inertia weight coefficient into a position updating strategy of the mayfly naiad algorithm; and S3, solving an optimal solution of the reactive power optimization model by using the improved mayfly naiad algorithm to obtain a power distribution network reactive power optimization sc