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浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Time-frequency analysis of PD-induced UHF signal in GIS and feature extraction using invariant moments 期刊论文 IET SCIENCE MEASUREMENT & TECHNOLOGY, 2018, 卷号: 12, 页码: 169-175 作者:  Li, Xi;  Wang, Xiaohua;  Xie, Dingli;  Wang, Xinqiao;  Yang, Aijun 收藏  |  浏览/下载：11/0  |  提交时间：2019/11/26 partial discharge detection  feature extraction  short-time Fourier transform method  signal detection  Time-frequency analysis  UHF measurement  partial discharge measurement  UHF detectors  PD-induced UHF signal acquisition  voltage 252 kV  UHF signal processing  gas insulated switchgear  time-frequency analysis  internal UHF sensor  L-shaped GIS  UHF signal classification  PD-induced UHF signal detection  PD pattern classification  Hu invariant moment  energy density distribution extraction  gas-insulated switchgear  support vector machine classifier  Fourier transforms  signal classification  ultrahigh-frequency method  propagation characteristics analysis  support vector machines   Correlation characteristics between gas pressure and SF6 decomposition under negative DC partial discharge 期刊论文 IET GENERATION TRANSMISSION & DISTRIBUTION, 2018, 卷号: 12, 期号: 5 作者:  Tang, Ju;  Yang, Dong;  Zeng, Fuping;  Tang, Bowen;  Li, Ke 收藏  |  浏览/下载：24/0  |  提交时间：2019/12/05 SF6 insulation  partial discharges  correlation methods  fault diagnosis  inorganic compounds  correlation characteristics  gas pressure  negative DC partial discharge  internal partial discharge  negative direct current  gas-insulated system  GIS  gas pressure  insulation fault diagnosis method  decomposition component analysis  PD decomposition  decomposition experimental platform  stainless steel needle-plate electrode  insulation defects  metal protrusions  variation law  component concentration  effective characteristic ratio  mathematical formula  pressure components  gas micro-ionisation theory  content rate  formation rate  pressure variations  SF6  SOF2  SO2F2  CO2  SO2  CF4   Internal UHF antenna for partial discharge detection in GIS 期刊论文 IET MICROWAVES ANTENNAS & PROPAGATION, 2018, 卷号: Vol.12 No.14, 页码: 2184-2190 作者:  Bin, F;  Wang, F;  Sun, QQ 收藏  |  浏览/下载：14/0  |  提交时间：2019/12/26 UHF antennas  partial discharge measurement  monopole antennas  antenna radiation patterns  gas insulated switchgear  impedance matching  microwave antennas  internal UHF antenna  internal ultra-high-frequency antenna  partial discharge detection  GIS  compact ultra-high-frequency antenna  symmetrical octagonal monopole  asymmetrical octagonal monopole  impedance matching performance  radiation patch  ground plane  low cutoff frequency  voltage standing wave ratio  good radiation patterns  moderate peak gain  strong pulse handling capability  electrical dimension  ratio bandwidth  bandwidth dimension ratio  insulation defect models  gas-insulated switchgear  floating metal  free metal particle  void  epoxy resin   Time–frequency analysis of PD-induced UHF signal in GIS and feature extraction using invariant moments 期刊论文 IET SCIENCE MEASUREMENT & TECHNOLOGY, 2018, 卷号: Vol.12 No.2, 页码: 169-175 作者:  Li, X;  Wang, XH;  Xie, DL;  Wang, XQ;  Yang, AJ 收藏  |  浏览/下载：7/0  |  提交时间：2019/12/26 time-frequency  analysis  gas  insulated  switchgear  partial  discharge  measurement  feature  extraction  signal  detection  signal  classification  UHF  detectors  UHF  measurement  Fourier  transforms  support  vector  machines  Time-frequency  analysis  PD-induced  UHF  signal  detection  ultrahigh-frequency  method  partial  discharge  detection  gas-insulated  switchgear  propagation  characteristics  analysis  PD  pattern  classification  PD-induced  UHF  signal  acquisition  internal  UHF  sensor  L-shaped  GIS  short-time  Fourier  transform  method  UHF  signal  processing  Hu  invariant  moment  energy  density  distribution  extraction  support  vector  machine  classifier  UHF  signal  classification  voltage  252  kV   Internal UHF antenna for partial discharge detection in GIS 期刊论文 IET MICROWAVES ANTENNAS & PROPAGATION, 2018, 卷号: Vol.12 No.14, 页码: 2184-2190 作者:  Bin, Feng;  Wang, Feng;  Sun, Qiuqin;  Lin, Shu;  Xie, Yaoheng 收藏  |  浏览/下载：11/0  |  提交时间：2019/12/26 UHF antennas  partial discharge measurement  monopole antennas  antenna radiation patterns  gas insulated switchgear  impedance matching  microwave antennas  internal UHF antenna  internal ultra-high-frequency antenna  partial discharge detection  GIS  compact ultra-high-frequency antenna  symmetrical octagonal monopole  asymmetrical octagonal monopole  impedance matching performance  radiation patch  ground plane  low cutoff frequency  voltage standing wave ratio  good radiation patterns  moderate peak gain  strong pulse handling capability  electrical dimension  ratio bandwidth  bandwidth dimension ratio  insulation defect models  gas-insulated switchgear  floating metal  free metal particle  void  epoxy resin