This letter considers the closed-loop stability issue of droop-based voltage control for wind power plants (WPPs) under varying grid strength. We first propose a data-driven online system equivalent/identification method (DOnSE) for WPPs using the weighted least-squares estimation (WLSE). Then, upon the analysis of link between stability boundary of droop gain and external grid strength, a self-adaptive gain-scheduling droop voltage control scheme for WPPs based on the DOnSE is developed to enhance the closed-loop stability and reactive power utilization of wind turbines (WTs).

中文翻译：

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用于风力发电厂自适应下垂电压控制的数据驱动在线系统等效

这封信考虑了在不同电网强度下风力发电厂 (WPP) 的基于下垂的电压控制的闭环稳定性问题。我们首先使用加权最小二乘估计（WLSE）为 WPP 提出了一种数据驱动的在线系统等效/识别方法（DOnSE）。然后，在分析下垂增益稳定边界与外部电网强度之间的联系的基础上，开发了一种基于 DOnSE 的 WPP 自适应增益调度下垂电压控制方案，以提高风电的闭环稳定性和无功功率利用率。涡轮机 (WT)。