arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.00595eess.SPcs.SYeess.SY
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基于同步压缩变换的非平稳电力系统强迫振荡分析

Non-Stationary Power System Forced Oscillation Analysis using Synchrosqueezing Transform

Pablo Gill Estevez, Pablo Marchi, Cecilia Galarza, Marcelo Elizondo

摘要:

在电力系统运行中,经常会出现非平稳强迫振荡。然而,大多数检测方法假设FO的频率是固定的。在本文中,我们提出了一种分析非平稳FO的方法。首先,傅立叶同步压缩变换(FSST)被用来提供一个集中的时间-频率表示的信号,允许识别和检索的非平稳信号分量。为了继续,耗散能流(DEF)方法应用于提取的组件,以定位强迫振荡的源。该方法进行了测试,使用模拟以及真正的PMU数据。结果表明,所提出的基于FSST的信号分解方法为DEF方法在非平稳FOs中的应用提供了一个系统的框架。

英文摘要:

Non-stationary forced oscillations (FOs) have been observed in power system operations. However, most detection methods assume that the frequency of FOs is stationary. In this paper, we present a methodology for the analysis of non-stationary FOs. Firstly, Fourier synchrosqueezing transform (FSST) is used to provide a concentrated time-frequency representation of the signals that allows identification and retrieval of non-stationary signal components. To continue, the Dissipating Energy Flow (DEF) method is applied to the extracted components to locate the source of forced oscillations. The methodology is tested using simulated as well as real PMU data. The results show that the proposed FSST-based signal decomposition provides a systematic framework for the application of DEF Method to non-stationary FOs.

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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