Voltage Stability Constrained Economic Dispatch for Multi-Infeed HVDC Power Systems

被引:3
作者
Wang, Jiaxin [1 ]
Hou, Qingchun [1 ]
Zhuo, Zhenyu [1 ]
Jia, Hongyang [1 ]
Zhang, Ning [1 ]
机构
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China
关键词
System scheduling; voltage stability; LCC-HVDC; sparse support vector machine; nonlinear security rule; FLOW; STRENGTH; OPF;
D O I
10.1109/TPWRS.2023.3277213
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Multi-infeed LCC-HVDC decreases voltage stability margins due to its current source nature. Moreover, the high penetration of variable renewable energy makes it difficult to reserve enough margins for all periods. Therefore, voltage stability constraints need to be considered in the scheduling stage. However, the challenge is that the voltage stability margin is not analytic with respect to state variables. We propose a sparse support vector machine to extract the nonlinear voltage stability rule. Toembedthe rule into economic dispatch (ED), we apply a convex reformulating technique to the rule and then formulate a voltage stability constrained ED (VSCED) model by semi-definite programming. The model is tested on a modified IEEE-14 system and a real-world system from Jiangsu Province, China; and it is compared with other typical data-driven-based models in the Jiangsu system. The numerical experiments suggest that the stability margins can be effectively reserved above the required threshold within an acceptable computation time by the proposed VSCED model, which outperforms the other models.
引用
收藏
页码:2598 / 2610
页数:13
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