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首页> 外文期刊>Electric power systems research >Dynamic characteristics of virtual inertial response provision by DFIG-based wind turbines
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Dynamic characteristics of virtual inertial response provision by DFIG-based wind turbines

机译：基于DFIG的风机提供虚拟惯性响应的动态特性

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摘要

Power converter technology partially or fully electrically decouples the wind energy source from the grid which results in the decrease of system inertia. However, when those units participate in virtual inertial response their electromechanical dynamics become coupled to the grid electromechanical modes. To date, there were no comprehensive studies on how do different elements and parameters of a wind energy conversion system (WECS) impact its virtual inertial response provision. This is important from the standpoint of understanding the expected wind farm response during frequency containment process as well as from the standpoint of developing better inertial response controllers. In this paper we have investigated how do operating point, line-side and machine-side converter, phase-locked loop and pitch angle control impact the inertial response of the total power controlled type III WECS (DFIG) which is one of the most common wind turbine topologies used today. We show that the operating point, pitch angle control and outer loop of the machine-side converter have a visible impact on strength of the inertial response, while other elements do not and some can even be neglected in inertial response studies.
机译：功率转换器技术将风能源与电网部分或全部电气隔离，从而降低了系统惯性。但是，当这些单元参与虚拟惯性响应时，它们的机电动力学将耦合到电网机电模式。迄今为止，还没有关于风能转换系统（WECS）的不同元素和参数如何影响其虚拟惯性响应提供的综合研究。从理解频率限制过程中预期的风电场响应以及开发更好的惯性响应控制器的角度来看，这一点很重要。在本文中，我们研究了工作点，线路侧和机器侧转换器，锁相环和俯仰角控制如何影响总功率控制的III型WECS（DFIG）的惯性响应，这是最常见的一种今天使用的风力涡轮机拓扑。我们表明，电机侧变流器的工作点，俯仰角控制和外环对惯性响应的强度有明显影响，而其他元素则没有，甚至在惯性响应研究中甚至可以忽略。

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