A High-Efficiency Network-Constrained Clustered Unit Commitment Model for Power System Planning Studies

被引:98
作者
Du, Ershun [1 ]
Zhang, Ning [1 ]
Kang, Chongqing [1 ]
Xia, Qing [1 ]
机构
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
Clustered unit commitment; security-constrained unit commitment; renewable energy; power system planning; operational flexibility; OPERATIONAL FLEXIBILITY; GENERATION;
D O I
10.1109/TPWRS.2018.2881512
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];
摘要
The increasing complexity of power systems, particularly the high renewable energy penetration, raises the necessity of incorporating detailed power system operation models into long-term planning studies. The classic short-term operation model, i.e., network-constrained unit commitment (NCUC), involves many binary variables and introduces computational challenges when applied to long-term planning optimizations. A high-efficiency and simplified NCUC model is required to incorporate operational flexibility in power system planning studies. This paper proposes a linearized NCUC formulation that has a high calculation performance and minor approximation errors compared to the full NCUC model. The proposed model combines the dispatch-only (DO) operation model and clustered unit commitment (CUC) model by introducing linking constraints between them such that the overall model guarantees both the transmission security constraints that are formulated in the DO model and the start-up/shut-down constraints of generating units that are formulated in the CUC model. A case study of a modified IEEE RTS-79 system is provided to demonstrate the validation and efficiency of the proposed simplified NCUC model as well as its effectiveness for power system planning studies.
引用
收藏
页码:2498 / 2508
页数:11
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