Hosting Capacity Interval Assessment of New Load in Distribution Networks
The traditional assessment of the fixed maximum load hosting capacity of new load in distribution networks is significantly affected by external uncertainties.The maximum new load hosting capacity interval consists of an optimistic upper bound and a pessimistic lower bound.For this reason,the paper proposes the interval assessment method.Firstly,the novel load is modelled.For the upper boundary,a deterministic model that takes into account various system safety operation constraints is used to portray the upper boundary.In order to describe the lower boundary,a bi-level robust model that integrates the uncertainties of EV charging load,aggregated temperature-controlled load power,and flexible resource scheduling is constructed,and the uncertainty budget adjustment constraints are introduced to achieve the integration of the three kinds of uncertainty factors.Then the bi-level model is reconstructed into a mixed-integer linear programming problem to solve based on the duality principle and the large M method.Finally,the effectiveness of the proposed method is verified by the simulation results of a 135-node distribution system.
new loadbi-level robust optimization modeluncertaintyinterval assessment
万方数据
维普
