Time-Frequency Characteristics of Partial Discharge of SF<sub>6</sub> Gas in an Extremely Uneven Field under Impulse Voltage

doi:10.7652/xjtuxb201308020

您当前的位置：

首页 >

文章列表页 >

Time-Frequency Characteristics of Partial Discharge of SF₆ Gas in an Extremely Uneven Field under Impulse Voltage

更新时间：2025-05-08

- Time-Frequency Characteristics of Partial Discharge of SF₆ Gas in an Extremely Uneven Field under Impulse Voltage
- Vol. 47, Issue 8, Pages: 115-120(2013)
- 作者机构：
  
  西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201308020
  CLC： TM835.4
- Online First：10 August 2013，
  
  Published：2013
- 稿件说明：
移动端阅览
Time-Frequency Characteristics of Partial Discharge of SF₆ Gas in an Extremely Uneven Field under Impulse Voltage[J]. 2013, 47(8): 115-120. DOI: 10.7652/xjtuxb201308020.
DOI：

Time-Frequency Characteristics of Partial Discharge of SF₆ Gas in an Extremely Uneven Field under Impulse Voltage[J]. 2013, 47(8): 115-120. DOI: 10.7652/xjtuxb201308020. DOI：

摘要

为了研究冲击电压下GIS腔体内绝缘缺陷局部放电的发生发展机理

采用短时傅里叶变换(STFT)、伪Wigner-Ville分布和Gabor分布理论

对标准负极性操作冲击电压下SF

气体在极不均匀场的局部放电光信号和电流信号的时频特征进行了分析。结果表明:STFT、伪Wigner-Ville分布和Gabor分布均能有效提取放电信号的时频特征

但Gabor分布具有较好的时频聚集性

不具有交叉干扰项

且对信号的时频特征的刻画最为细致

而STFT的时频聚集性较差

伪Wigner-Ville分布则存在固有交叉干扰项; 冲击电压下局部放电光信号和电流信号在时频平面的分布不同

光脉冲的能量上升到峰值的时间要小于电流脉冲。

Abstract

To investigate the mechanism of partial discharge(PD)of insulation defects in gas-insulated metal-enclosed switchgear(GIS)under impulse voltage

time-frequency characteristics of optical signals and current signals of PD are analyzed with short time Fourier transform(STFT)

pseudo Wigner-Ville distribution theory and Gabor distribution theory. The analysis reveals that: 1)The time-frequency characteristics of PD signals can be effectively extracted; 2)Gabor distribution of PD signals is endowed with the best time-frequency aggregation behavior without cross-interference items and reflects the most detailed characteristics of PD signals in time-frequency plane; 3)STFT of PD signals possesses the poorest time-frequency aggregation behavior and 4)Pseudo Wigner-Ville distribution of PD signals includes several inherent cross-interference terms. The time-frequency characteristics of the optical signals and the current signals of PD are different and the rising time of the optical pulse is less than that of the current pulse in time-frequency plane.

关键词

Keywords

references

邱毓昌. GIS装置及其绝缘技术 [M]. 西安:西安交通大学出版社, 2007:85-87.

陈庆国. 快速振荡冲击电压下SF6气体间隙及绝缘子沿面放电特性 [D]. 西安:西安交通大学, 2001.

SARATHI R, KRISHNAMURTHI M, REJI P. Breakdown characteristics of a short air gap with conducting particle under composite voltages [C]∥Conference on Electrical Insulation and Dielectric Phenomena. Minneapolis,MN,USA:IEEE, 1997:19-22.

CIGRE Joint Working Group 33/23.12. Insulation coordination of GIS: return of experience,on site tests and diagnostic techniques [C]∥International Council on Large Electric Systems. Paris,France:[s.n.], 1998:67-97.

徐世山,孟可风,刘文泉. 一起363 kV GIS充电闪络故障的原因分析 [J]. 高电压技术, 2007,43(1):74-76.

XU Shishan, MENG Kefeng, LIU Wenquan. Analysis of 363 kV gas insulated switchgear charging flash over fault [J]. High Voltage Engineering, 2007,43(1):74-76.

孙强,董明,任重. 现场用冲击耐压试验及局部放电检测装置设计 [J]. 高电压技术, 2012,38(3):639-644.

SUN Qiang, DONG Ming, REN Zhong. Field test and analysis of partial discharge on GIS under impulse voltage [J]. High Voltage Engineering, 2012,38(3):639-644.

LIANG Guishu, ZHOU Hongwei, DONG Huaying. Joint time-frequency analysis on PD pulse signals in GIS [C]∥Asia-Pacific Conference on Environmental Electromagnetics. Piscataway, NJ, USA: IEEE, 2003:194-197.

王猛,谈克雄,高文胜,等. 局部放电脉冲波形的时频联合分析特征提取方法 [J]. 电工技术学报, 2002,17(2):76-79.

WANG Meng, TAN Kexiong, GAO Wensheng, et al. Time-frequency distribution method for extracting features of partial discharge pulse shape [J]. Transactions of China Electrotechnical Society, 2002,17(2):76-79.

吴正国,夏立,尹为民. 现代信号处理技术 [M]. 武汉:武汉大学出版社, 2003:83-85.

ABEYSEKERA S S, BOASHASH B. Methods of signal classification using the images produced by the Wigner-Ville distribution [J]. Pattern Recognition Letters, 1991,12:717-729.

张贤达,保铮. 非平稳信号分析与处理 [M]. 北京:国防工业出版社, 1998:46-49.

袁鹏,司文荣,李军浩,等. 局部放电脉冲的Wigner时频分布特性研究 [J]. 高压电器, 2008,44(6):524-526.

YUAN Peng, SI Wenrong, LI Junhao, et al. Time-frequency characteristics of partial discharge pulse with Wigner-Ville distributions [J]. High Voltage Apparatus, 2008:44(6):524-526.

刘卫东,刘尚合,王雷. 采用Gabor变换的局部放电信号时频分析 [J]. 高电压技术, 2007,33(8):40-43.

LIU Weidong, LIU Shanghe, WANG Lei. Time-frequency analysis of partial discharge signal by Gabor transform [J]. High Voltage Engineering, 2007,33(8):40-43.

JANSSEN A J E M. Optimal property of the Gaussian window spectrogram [J]. IEEE Trans on Signal Processing, 1991,39(1):202-204.

IEC. IEC 60060-3 High voltage test techniques: part 3 definitions and requirements for on-site tests[S]. Geneva, Swiss: IEC, 2005.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Partial Discharge Measurement and Analysis of Gap in Oil-Paper Insulation Model under Lightning Impulse Voltage

Time-Domain Characteristic Site Analysis for Ultra-High Frequency Partial Discharge in Power Transformer

Measurement and Analysis for Pulse Current Shapes of Partial Discharge in Oil under DC Voltage

Propagation Characteristic of Partial Discharge Ultra High Frequency Signals Outside Transformer

Pulse Extraction for Partial Discharge with Double Channels with Independent Component Analysis

Related Author

李彦明

顾朝敏

李继胜

赵学风

孙振权

高飞 2

吴锴 1

成永红 1

Related Institution

School of Electrical Engineering, Xi'an Jiaotong University

State Key Laboratory of Power Equipment and Electrical Insulation, Xi'an Jiaotong University

Electric Power Research Institute of Guangdong Power Grid Corpation

State Grid Zhejiang Electric Power Research Institute

(State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University,,)

⁰

Time-Frequency Characteristics of Partial Discharge of SF6 Gas in an Extremely Uneven Field under Impulse Voltage

DOI：10.7652/xjtuxb201308020

摘要

Abstract

关键词

Keywords

references

Time-Frequency Characteristics of Partial Discharge of SF₆ Gas in an Extremely Uneven Field under Impulse Voltage