融合柔性养殖负荷与储能的高光伏渗透率渔光台区运行策略OA

Driven by the goals of carbon emission peak and carbon neutrality and various policies,installation capacities of rural distributed photovoltaic(PV)have grown rapidly.The integration of large-scale PV has led to severe reverse overload in numerous aquaculture-PV distribution station areas across Southern China.Meanwhile,the fish pond aquacultural loads demonstrate significant flexibility potential due to their predictability and adjustability.Therefore,this paper proposes a reverse overload mitigation strategy for the high-penetration aquaculture-PV distribution station areas based on the coordinated control of flexible aquacultural loads and energy storage.Firstly,the most critical PV output scenario is extracted from the annual operation data of an actual distribution station area,and the corresponding net-load curve is constructed to reveal the typical characteristics of reverse overload.Secondly,a differential dynamic model describing the oxygen content evolution of a single aerator is established based on the oxygen demand mechanisms of fish and the coupling characteristics of aerator.This model is then used to derive the non-adjustable nighttime aeration load and to quantify the shiftable and transferable capabilities and their demand-response proportions of feeding-related aeration and sunny-day supplemental aeration load.On this basis,a coordinated optimization model combining flexible loads and energy storage is developed to prevent reverse power violations and enhance PV accommodation capability.Finally,case studies are conducted on a modified IEEE 33-bus aquaculture-PV distribution station area and other topological systems.Results demonstrate that the proposed strategy can effectively eliminate the reverse overload,significantly reduce operation costs,and maintain good applicability and economy across distribution station areas with varying scales.