The continuous advancement of port electrification and the increasing penetration of distributed renewable energy underscore the necessity of harnessing the adjustable potential of distributed resources within port areas.This approach can provide significant insights intothe flexible interaction between port area grids and the main power grid

as well as enhance the overall flexible operation of port area grids. To this end

introduce the concept of the flexible resource aggregation feasible region for port areas. By considering the operational constraints of port area grids and the operational characteristics and adjustable potential of distributed resources

such as photovoltaics

cold chain logistics

and energy storage

a flexible resource aggregation feasible region model suitable for port areas is established.Given the stochastic nature of renewable energy and the uncertainties associated with load forecasting in port power networks

the flexibility aggregation is described as a series of stochastic optimization problems. A convex hull vertex search algorithm is designed to approximate the boundaries of the flexible resource aggregation feasible region.Finally

simulations based on a modified IEEE 33 bus distribution system for a port power network substation are conducted to validate the effectiveness of the proposed flexible resource aggregation feasible region method for port areas.