The invention discloses a DER grid-connected admission
capacity planning method based on dual-layer scene interval
power flow. The
planning method proposes the dual-layer scene interval
power flow bysufficiently utilizing the multi-scene technology and interval
power flow features, the method comprises the following steps: performing Latin
hypercube sampling based on the accumulative probabilitydistribution of the
wind power and the photovoltaic to obtain the whole
sample space, and obtaining two
layers of scene sets by using a K-means clustering
algorithm, wherein the first layer scene setperforms computation by using the interval power flow, and the subordinate second layer scene sets meet the constraint if the node
voltage satisfies the constraint, or performs the power
flow computation by selecting the classic scene for each subordinate scene sets, thereby judging whether satisfies the constraint; solving the node
voltage line-crossing probability, and establishing the DRE grid-connected admission capacity model based on the dual0layer scene interval power flow by taking the maximized DRE grid-connected admission capacity as the target and the node
voltage as the chance constraint, and performing the solution by applying a universal
gravitation search algorithm.