配电网阻塞管理中公共建筑灵活性利用与市场分布式出清方法OA

To address the issues of line congestion and voltage congestion in distribution network caused by the wide-spread integration of distributed energy resources,a method for utilizing the flexibility of public buildings and a clear-ing method for the distribution-level flexibility market(DFM)in distribution network congestion management are pro-posed,which take advantage of the flexible regulation potential of thermal inertia of building energy use.First,a three-layer architecture of DFM involving a distribution system operator(DSO),flexibility aggregators and building users is constructed.Based on the day-ahead energy management scheme for building clusters and microgrid systems,the line overload and node voltage drop are identified through power flow analysis,and the flexibility demand is obtained.Sec-ond,the users'flexibility resources are aggregated to construct a DFM clearing model that balances the interests of both the DSO and the flexibility aggregators,and a distributed clearing method based on the alternating direction meth-od of multipliers(ADMM)is adopted,where only the optimization variables of the coupled boundary are exchanged to protect the user privacy.The flexibility prices and power can be synchronously optimized,so as to formulate a reason-able trading plan.The result of a case study demonstrates that the proposed method can effectively alleviate congestion in distribution network and bring flexibility service benefits to aggregators and users.