碳交易机制下考虑需求响应和智能软开关融合的配电网双层优化OA

Aimed at the problems such as power fluctuations,voltage instability and high operating costs caused by the integration of distributed generation into distribution network,a bi-level optimization strategy integrating demand re-sponse and soft open point in distribution network is proposed.First,a stepped carbon trading mechanism is adopted,and a bi-level optimization model considering demand response and soft open point is constructed.The lower-level mod-el aims to minimize the voltage deviation,while the upper-level model aims to minimize the comprehensive operating cost of the system.Second,a hierarchical optimization method is applied,in which the optimal voltage deviation ob-tained from the lower-level model is added by a small value and used as a stability constraint for the upper-level model.Third,by introducing auxiliary variables and second-order cone relaxation technology,the non-convex distribution net-work optimization model is transformed into a mixed-integer second-order cone programming model and solved.Based on the aforementioned research,case studies are conducted on a IEEE 33-node distribution system.Results demon-strate that the proposed strategy not only ensures system voltage stability but also achieves low-carbon economic opera-tion.