This paper proposes a hierarchical transient stability constrained optimal power flow (TSCOPF) analysis in a power system with a multi‐terminal voltage‐source converter (VSC) high‐voltage direct current (HVDC) system and large‐scale wind farms. This aims at determining the reinforcement and operation of the power system using the multi‐terminal VSC HVDC (MTDC) system. By the method, the wind farms can be installed without any transient instability issues. On the AC grid side, transient rotor‐angle stability and transient AC voltage stability are included as additional constraints. On top of that, the constraints of DC bus voltage fluctuations and DC transmission line current deviations on the DC grid side are also taken into account. Time‐domain simulation approach is applied to investigate these transient stability constraints. The MTDC system reinforcement is designed considering wind power transmission and economic operation of the system model. The influences of the transient stability constraints on the system operation costs with high and low wind power output patterns are discussed. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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交流/多端子VSC HVDC混合系统中的暂态稳定约束最优潮流

本文提出了在具有多端子电压源转换器（VSC）高压直流（HVDC）系统和大型风电场的电力系统中的分级暂态稳定约束最优功率流（TSCOPF）分析。目的是确定使用多端子VSC HVDC（MTDC）系统的电源系统的增强和运行。通过这种方法，可以在没有任何暂态不稳定问题的情况下安装风电场。在交流电网方面，瞬态转子角稳定性和瞬态交流电压稳定性也作为附加约束条件包括在内。最重要的是，还考虑了直流母线侧直流母线电压波动和直流传输线电流偏差的限制。时域仿真方法用于研究这些暂态稳定性约束。MTDC系统加固的设计考虑了风能传输和系统模型的经济运行。讨论了暂态稳定约束对高，低风电输出模式下系统运行成本的影响。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。