In this letter, the voltage sensitivity-based coherent reactive power control is proposed to perform the online voltage security enhancement for insecure buses in the multi-area wind power generation systems. The proposed approach is realized in the two-level optimization problem, containing a master problem and two subproblems. The master problem is responsible for the equal reactive power adjustments in multiple regional clustering wind farms regarding to the voltage security enhancement while the subproblems proceed the further improvement of the voltage security based on the analysed result of the master problem. Case studies on IEEE 57-bus test system are presented to validate the cost-effectiveness of the proposed method. Also, the time-domain simulation is conducted to illustrate the validity of the proposed control scheme.

中文翻译：

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多区域风力发电系统中基于电压灵敏度的相干无功功率控制的在线电压安全性增强

在这封信中，提出了基于电压灵敏度的相干无功功率控制，以执行多区域风力发电系统中不安全公交的在线电压安全性增强。所提出的方法是在两级优化问题中实现的，它包含一个主问题和两个子问题。主问题负责在多个区域集群风电场中就电压安全性增强进行相等的无功功率调整，而子问题则根据主问题的分析结果进行电压安全性的进一步改善。提出了基于IEEE 57总线测试系统的案例研究，以验证所提出方法的成本效益。此外，进行时域仿真以说明所提出的控制方案的有效性。