论文标题
非平稳电源系统使用同步转换强制振荡分析
Non-Stationary Power System Forced Oscillation Analysis using Synchrosqueezing Transform
论文作者
论文摘要
在电力系统操作中已经观察到非平稳强迫振荡（FOS）。但是，大多数检测方法都假定FOS的频率是固定的。在本文中，我们提出了一种分析非平稳FOS的方法。首先，傅立叶同步Queezing Transform（FSST）用于提供信号的浓缩时频表示，该表示允许识别和检索非平稳信号组件。为了继续，将耗散能量（DEF）方法应用于提取的组件以定位强制振荡的来源。使用模拟以及实际PMU数据测试该方法。结果表明，提出的基于FSST的信号分解为将DEF方法应用于非平稳FOS提供了系统的框架。
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.
