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首页> 外文会议>2018 Progress in Applied Electrical Engineering >The Influence of DSP Parameters on the Evaluated Transfer Function of Transformer Winding for Pseudo-White Noise Excitation
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The Influence of DSP Parameters on the Evaluated Transfer Function of Transformer Winding for Pseudo-White Noise Excitation

机译：DSP参数对伪白噪声励磁变压器绕组评估传递函数的影响

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摘要

Power transformers are one from more important and the most expensive elements of the AC electric power systems. For this reason, their in-service operation and management are usually based on the Condition Based Maintenance (CBM) strategy, which uses diagnostic data obtained by various methods to assess the real condition of supervised objects. The method analyzing the transfer function (TF) of the transformer windings makes it possible to track changes in the electrical and mechanical parameters of the windings due to the occurrence of the various operating stresses (e.g. high current short-circuits). The paper presents analysis regarding the use of wideband, random signals (applied from a pseudo-white noise generator) for determining the transfer function of transformer windings. Particularly, the influence of the basic digital signal processing parameters (e.g. waveforms sampling frequency, data record length and selected window function) on the evaluated characteristics of the transfer function is shown.
机译：电力变压器是交流电力系统中最重要，最昂贵的元件之一。因此，它们的在役运行和管理通常基于基于条件的维护（CBM）策略，该策略使用通过各种方法获得的诊断数据来评估受监控对象的实际状况。分析变压器绕组的传递函数（TF）的方法可以跟踪由于各种工作应力（例如大电流短路）的发生而引起的绕组电气和机械参数的变化。本文介绍了有关使用宽带随机信号（从伪白噪声发生器施加）来确定变压器绕组的传递函数的分析。特别地，示出了基本数字信号处理参数（例如波形采样频率，数据记录长度和选择的窗口函数）对传递函数的评估特性的影响。

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