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arXiv 2302.03633eess.SPstat.ML
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基于Copula统计量的盲源分离识别电力系统振荡模式

Identification of Power System Oscillation Modes using Blind Source Separation based on Copula Statistic

Pooja Algikar, Lamine Mili, Mohsen Ben Hassine, Somayeh Yarahmadi, Almuatazbellah, Boker

摘要:

由于可再生能源的不稳定性及其电力电子器件的切换,具有大量可再生能源渗透的电力系统的动态变得更加非线性。因此,当电力系统受到扰动时,准确地识别这种系统的动态振荡模式以启动适当的预防或校正控制措施是至关重要的。在本文中,我们提出了高阶盲源识别(HOBI)算法的基础上Copula统计,以解决这些非线性动力学模态分析。该方法结合希尔伯特变换(HOBI-HT)和迭代过程(HOBMI),可以从最少一个通道的观测信号中识别出所有的模态和模型阶次。我们访问的性能所提出的方法对数值模拟信号和记录的数据从模拟的时域分析的经典11总线4机测试系统。我们的仿真结果优于国家的最先进的方法的准确性和有效性。

英文摘要:

The dynamics of a power system with large penetration of renewable energy resources are becoming more nonlinear due to the intermittence of these resources and the switching of their power electronic devices. Therefore, it is crucial to accurately identify the dynamical modes of oscillation of such a power system when it is subject to disturbances to initiate appropriate preventive or corrective control actions. In this paper, we propose a high-order blind source identification (HOBI) algorithm based on the copula statistic to address these non-linear dynamics in modal analysis. The method combined with Hilbert transform (HOBI-HT) and iteration procedure (HOBMI) can identify all the modes as well as the model order from the observation signals obtained from the number of channels as low as one. We access the performance of the proposed method on numerical simulation signals and recorded data from a simulation of time domain analysis on the classical 11-Bus 4-Machine test system. Our simulation results outperform the state-of-the-art method in accuracy and effectiveness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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