Propogation characteristics of PD-induced UHF signal in 126 kV GIS with three-phase construction based on time–frequency analysis

Xi Li; Xiaohua Wang; Aijun Yang; Dingli Xie; Dan Ding; Mingzhe Rong

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Propogation characteristics of PD-induced UHF signal in 126 kV GIS with three-phase construction based on time–frequency analysis

机译：基于时频分析的三相126 kV局部放电诱发的UHF信号在三相构造中的传播特性

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摘要

Partial discharge (PD) detection of the gas-insulated switchgear (GIS) is an effective method for substation security. The GIS with three-phase construction is widely used for substations. The propagation characteristics of PD-induced ultra-high-frequency (UHF) signal in three-phase GIS is investigated in this study by time-frequency analysis method. The variation of peak-to-peak value (Vpp) and cumulative energy, and especially the energy density in the time-frequency plane are used to represent the feature of the UHF signal. Furthermore, the different situation of the insulation defects and the detection point positions are compared, and the reason for the difference is explained as well. As a result, this study identified a novel method to determine the PD source position in the GIS with three-phase construction.

机译：气体绝缘开关设备（GIS）的局部放电（PD）检测是确保变电站安全的有效方法。具有三相结构的GIS被广泛用于变电站。利用时频分析方法，研究了局部放电诱发的超高频信号在三相GIS中的传播特性。峰峰值（Vpp）和累积能量的变化，尤其是时频平面中的能量密度的变化被用来表示UHF信号的特征。此外，比较了绝缘缺陷和检测点位置的不同情况，并解释了产生这种差异的原因。结果，本研究确定了一种采用三相结构确定GIS中PD源位置的新方法。

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来源
《Science, Measurement & Technology, IET》 |2016年第7期|805-812|共8页
作者
Xi Li; Xiaohua Wang; Aijun Yang; Dingli Xie; Dan Ding; Mingzhe Rong;
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作者单位

Xi'an Jiaotong University, People's Republic of China;

Xi'an Jiaotong University, People's Republic of China;

Xi'an Jiaotong University, People's Republic of China;

Xi'an Jiaotong University, People's Republic of China;

Xi'an Jiaotong University, People's Republic of China;

Xi'an Jiaotong University, People's Republic of China;

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正文语种 eng
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关键词
time-frequency analysis; gas insulated substations; gas insulated switchgear; partial discharge measurement; power system security;

机译：时频分析气体绝缘变电站气体绝缘开关柜局部放电测量电力系统安全;

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专利

1. Investigation on the placement effect of UHF sensor and propagation characteristics of PD-induced electromagnetic wave in GIS based on FDTD method [J] . Li T., Wang X., Zheng C., Dielectrics and Electrical Insulation, IEEE Transactions on . 2014,第3期

机译：基于FDTD方法的GIS中UHF传感器的放置效果和PD感应电磁波在GIS中的传播特性研究
2. Chromatic processing for feature extraction of PD-induced UHF signals in GIS [J] . Xi Li, Zhixiang Wang, Xiaohua Wang, 全球能源互联网（英文版） . 2020,第005期

机译：用于GIS中PD诱发的UHF信号特征提取的色处理
3. Chromatic processing for feature extraction of PD-induced UHF signals in GIS [J] . Xi Li, Zhixiang Wang, Xiaohua Wang, 全球能源互联网：英文版 . 2020,第005期

机译：用于GIS中PD诱发的UHF信号特征提取的色处理
4. Analysis of the time-frequency characteristics of internal combustion engine vibration signal based on Hilbert-Huang transform [C] . 3rd International Congress on Image and Signal Processing . 2010

机译：基于希尔伯特-黄变换的内燃机振动信号时频特性分析
5. CFS: Time-frequency representations of acoustic signals based on redundant wavelet methodologies. [D] . Parker, Steven T. 2005

机译：CFS：基于冗余小波方法的声音信号的时频表示。
6. Time-Frequency Analysis of Non-Stationary Biological Signals with Sparse Linear Regression Based Fourier Linear Combiner [O] . Yubo Wang, Kalyana C. Veluvolu 2017

机译：基于稀疏线性回归的基于傅立叶线性组合器的非平稳生物信号的时频分析
7. Insulation Diagnosis of GIS Based on Amplitude Ratio of First Incoming PD-induced Electromagnetic Wave Measured by UHF Method [O] . 大塚信也, 竹中賢司, 小迫雅裕, 2002

机译：基于UHF法测量的首次入射PD感应电磁波振幅比的GIS绝缘诊断

Propogation characteristics of PD-induced UHF signal in 126 kV GIS with three-phase construction based on time–frequency analysis

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