1. Distributed optimal dispatching method for smart distribution network considering effective interaction of source-network-load-storage flexible resources
- Author
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Bing Sun, Ruipeng Jing, Yuan Zeng, Yunfei Li, Jiahao Chen, and Gang Liang
- Subjects
Smart distribution network ,Effective interaction of SNLS flexible resources ,Laminar flow structure ,Distributed dispatching ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Smart distribution networks (SDNs) can integrate the flexible resources from source-network-load-storage (SNLS) to cope with the fluctuation due to a high proportion of distributed generation (DG). However, such SNLS resources are characterized by complex coupling relationships; their control authority may belong to different stakeholders. Challenged by the above, the laminar flow structure from the communication field is introduced for distributed optimal dispatching in SDNs. A day-ahead laminar dispatching method considering the effective interaction of SNLS resources is proposed. First, the applicability of the laminar flow structure is analyzed. An upper-layer dispatching model for the SDN and a lower-layer dispatching model for users with DG are established. Then, by introducing intermediate variables, the lower dispatching model is transformed into a quadratic programming problem and the upper dispatching model is transformed into a second-order cone relaxation programming problem. Selecting the tie-line power flow as the exchanged information in the boundary, the upper- and lower-layer models are alternately solved until the convergence criterion is met. Finally, an improved IEEE 33-bus system is experimentally analyzed. We find that the SNLS flexible resource dispatching scheme can be obtained with only a few iterations, and the DG consumption can be significantly improved.
- Published
- 2023
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