论文标题
WTG的非线性虚拟惯性控制，以增强初级频率响应和抑制旋转扭转振荡
Nonlinear Virtual Inertia Control of WTGs for Enhancing Primary Frequency Response and Suppressing Drive-Train Torsional Oscillations
论文作者
论文摘要
最近已经开发了针对风力涡轮机发电机（WTG）的虚拟惯性控制器（VIC），以弥补功率系统中惯性的减少。但是，VIC可以引起WTG驱动列车的低频扭转振荡。本文解决了这个问题，并基于客观全息反馈理论开发了新的非线性VIC。这种方法允许将需要改进的目标转换为Brunovsky类型的完全可控制的系统。在各种情况下的仿真结果表明，在抑制WTG低频驱动式扭转振荡方面，所提出的方法优于现有的VIC，在干扰之前，对系统频率NADIR的增强以及对WTG转子速度的快速和平稳恢复到原始MPP。所提出的方法还能够协调多个WTG。
Virtual inertia controllers (VICs) for wind turbine generators (WTGs) have been recently developed to compensate for the reduction of inertia in power systems. However, VICs can induce low-frequency torsional oscillations of the drive train of WTGs. This paper addresses this issue and develops a new nonlinear VIC based on objective holographic feedbacks theory. This approach allows transforming the objectives that require improvement into a completely controllable system of Brunovsky's type. Simulation results under various scenarios demonstrate that the proposed method outperforms existing VICs in terms of suppression of WTG low-frequency drive-train torsional oscillations, enhancement of system frequency nadir as well as fast and smooth recovery of WTG rotor speed to the original MPP before the disturbance. The proposed method is also able to coordinate multiple WTGs.
