基于快速傅里叶变换的VFTO实测波形分析

doi:10.16180/j.cnki.issn1007-7820.2021.03.012

Abstract

Abstract:

When the frequency of the VFTO generated inside the GIS is consistent with the resonance frequency of the winding-type equipment, resonance overvoltage will be generated in the equipment and threaten the safe operation of the equipment. Therefore, it is necessary to analyze the spectral characteristics of the VFTO signal. In this study, a fast Fourier transform is proposed to perform spectrum analysis on VFTO waveform data generated when a field-disconnected isolator is closed. This study first introduces the principle of fast Fourier transform and the feasibility of VFTO spectrum analysis in detail, and describes the measurement system and experimental environment. From the result analysis, it can be found that the frequency component of the field measured VFTO signal is consistent with the frequency component proposed in the IEC 60071-1∶2006 standard. The results verifies the feasibility of performing fast Fourier transform on the spectrum analysis of VFTO signals, and indicates the great applicability in practical engineering projects.

Key words: GIS, VFTO, fast Fourier transform, field measurement, measuring system, spectrum features

CLC Number:

TN911.71

CHEN Weiren,ZHANG Wenbin,WANG Lizhe,LI Yincheng,QIAO Yuning. Analysis of VFTO Field Measured Waveform Based on Fast Fourier Transform[J].Electronic Science and Technology, 2021, 34(3): 65-70.

Figures/Tables 10

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Analysis of VFTO Field Measured Waveform Based on Fast Fourier Transform

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