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首页> 外文会议>International Conference on Power and Energy Engineering >Mitigating Ultra-Low-Frequency Oscillations in Wind-Penetrated Hydro-dominant Power Grid through Virtual Inertia Emulation Strategy
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Mitigating Ultra-Low-Frequency Oscillations in Wind-Penetrated Hydro-dominant Power Grid through Virtual Inertia Emulation Strategy

机译：通过虚拟惯性仿真策略减轻风穿透水力主机电网的超低频率振荡

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摘要

This paper aims to improve the frequency stability in wind penetrated hydro-dominant power grids. Such an environment is subjected to two significant technical challenges. On the one hand, the occurrence of ultra-low frequency oscillations leading to hydro-dominant power systems collapse, which has been frequently noticed in the two last decades. On the other hand, wind generators mainly present relatively low inertia, increasing bad frequency response (rate of change of frequency, frequency nadir) following disturbances. However, through virtual inertia control, variable speed wind turbines (VSWT) have demonstrated the ability to participate in frequency regulation of the power system by releasing the kinetic energy stored in the rotor for a time and increasing the active power output. In this paper, the ability of virtual inertia emulation from doubly fed induction generator-based wind turbines (DFIG-WT) to participate in the damping of hydro-dominant grid ultra-low frequency oscillations (ULFO) is investigated. The ultra-low frequency oscillations are successfully reproduced in the chosen test system. Then results are shown and discussed to validate the effectiveness of the proposed strategy.
机译：本文旨在提高风洞的频率稳定性的水力主导电网。这种环境受到两个重要的技术挑战。一方面，超低频率振荡的发生，导致水力主导的电力系统崩溃，在去年后经常被注意到。另一方面，风力发生器主要存在相对较低的惯性，越来越高的频率响应（频率变化率，频率Nadir）之后的干扰。然而，通过虚拟惯性控制，可变速度风力涡轮机（VSWT）已经证明了通过释放存储在转子中的动能和增加电力系统的动力系统和增加有源电力输出的能力。在本文中，研究了从双馈射频产生的基于辅助发电机的风力涡轮机（DFIG-WT）的虚拟惯性仿真的能力，以参与水力优势网格超低频率振荡（ULFO）的阻尼。在所选测试系统中成功再现超低频率振荡。然后显示并讨论了结果以验证所提出的策略的有效性。

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