@article{XIAO2025, 
author = {Qiang XIAO and Jiaxin ZHOU and Xuan FAN and Xianqi SHAO and Qian ZHOU and Shengpeng QU and Wei LIN and Zhifang YANG},
title = {Tie-line exchange capability considering N-1 constraints: characterization and analysis},
year = {2025},
journal = {Journal of Chongqing University},
volume = {48},
number = {9},
pages = {12-20},
keywords = {tie-line, power exchange capability, N-1 contingency, fast determination, unit control mode},
url = {https://www.sciopen.com/article/10.11835/j.issn.1000-582X.2024.216},
doi = {10.11835/j.issn.1000-582X.2024.216},
abstract = {Accurate characterization of tie-line power transfer capability is essential for ensuring the feasibility and optimality of cross-regional power exchanges. However, existing methods typically consider only the base operating scenario and neglect N-1 contingencies, leading to inaccurate assessments of regional tie-line transfer capabilities. This paper addresses this gap by focusing on the tie-line exchange capability of power systems under N-1 contingency constraints. A fast determination strategy is proposed based on the coupling relationship between the base case and N-1 scenarios, using a decomposition approach. Furthermore, the impacts of various generator control modes on tie-line exchange capability under N-1 contingencies are analyzed to support the optimal allocation of cross-regional power transfers. The proposed methods is validated using a provincial-level power system, demonstrating its accuracy and practical effectiveness.}
}