Ladder‐Wise calculation method for z‐coordinate of transformer PD source based on planar layout UHF antenna sensors

In locating a transformer partial discharge (PD) source, there is a large fluctuation error in the z‐coordinate of the location, which results with planar layout ultrahigh‐frequency (UHF) antenna sensors. For the large fluctuation error, this paper first theoretically analyzes the reason. According to the theoretical analysis results, a ladder‐wise calculation method of the PD source z‐coordinate is proposed: first, the x‐ and y‐coordinates of the PD source are calculated, then the univariate equation f(z) is derived, and the z‐coordinate of the PD source is obtained by f(z). Finally, the positioning effect of the ladder‐wise calculation method for PD source z‐coordinate is verified experimentally. Experimental results show that the proposed method can reduce the fluctuation of the z‐coordinate of the PD source from 0.6 to 0.2, and when the PD location sample set is ≥10, the average absolute error of the z‐coordinate is reduced from about 0.4 m to less than 0.1 m. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

[1]  K. Feser,et al.  Sensitivity of acoustic PD detection in GIS. Laboratory experiments and on-site experience , 1996, Conference Record of the 1996 IEEE International Symposium on Electrical Insulation.

[2]  B. F. Hampton,et al.  Dielectric windows for UHF partial discharge detection , 2001 .

[3]  Shi,et al.  Novel Fault Diagnosis Scheme for HVDC System via ESO , 2007 .

[4]  Li Yan-ming.  UHF Signal External Detection of Partial Discharge in Transformers , 2007 .

[5]  Li Yan-ming.  Emulational Study on the Propagation of UHF Signal Emitted by PD in Transformers , 2007 .

[6]  Li Yanming.  Propagation Characteristic of Partial Discharge Ultra High Frequency Signals Outside Transformer , 2008 .

[7]  Xiaoxing Zhang,et al.  Application of sleeve monopole antenna for partial discharge detection in transformer , 2010, 2010 International Conference on High Voltage Engineering and Application.

[8]  G. Robles,et al.  Shielding effect of power transformers tanks in the ultra-high-frequency detection of partial discharges , 2013, IEEE Transactions on Dielectrics and Electrical Insulation.

[9]  Tang Ju,et al.  Study on relationship between optical signals and charge quantity of partial discharge under four typical insulation defects , 2013, 2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.

[10]  Wei Li,et al.  GIS partial discharge pattern recognition based on the chaos theory , 2014, IEEE Transactions on Dielectrics and Electrical Insulation.

[11]  Wei Wang,et al.  A semi-definite relaxation approach for partial discharge source location in transformers , 2015, IEEE Transactions on Dielectrics and Electrical Insulation.

[12]  Gehao Sheng,et al.  Localization Algorithm for the PD Source in Substation Based on L-Shaped Antenna Array Signal Processing , 2015, IEEE Transactions on Power Delivery.

[13]  Ying Zhang,et al.  Analysis of adsorption properties of typical partial discharge gases on Ni-SWCNTs using density functional theory , 2016 .

[14]  Jitka Fuhr,et al.  Identification and localization of PD-sources in power-transformers and power-generators , 2017, IEEE Transactions on Dielectrics and Electrical Insulation.

[15]  Pengfei Li,et al.  Feature parameters extraction of power transformer PD signal based on texture features in TF representation , 2017 .

[16]  Stefan Tenbohlen,et al.  Application of UHF sensors for PD measurement at power transformers , 2017, IEEE Transactions on Dielectrics and Electrical Insulation.

[17]  Limei Xu,et al.  A Compact Wide-Band Hybrid Dielectric Resonator Antenna with Enhanced Gain and Low Cross-Polarization , 2017 .

[18]  Yalong Li,et al.  On the Feasibility of Gap Detection of Power Transformer Partial Discharge UHF Signals: Gap Propagation Characteristics of Electromagnetic Waves , 2017 .

[19]  Song Xiao,et al.  Antipodal Vivaldi Antenna to Detect UHF Signals That Leaked Out of the Joint of a Transformer , 2017 .

[20]  A. Akbari,et al.  UHF PD measurements on power transformers-advantages and limitations , 2017, IEEE Transactions on Dielectrics and Electrical Insulation.

[21]  Cheng Pan,et al.  Variation of Discharge Characteristics With Temperature in Moving Transformer Oil Contaminated by Metallic Particles , 2018, IEEE Access.

[22]  Djordje Dukanac,et al.  Application of UHF method for partial discharge source location in power transformers , 2018, IEEE Transactions on Dielectrics and Electrical Insulation.

[23]  S. V. Kulkarni,et al.  Localization of Partial Discharges Inside a Transformer Winding Using a Ladder Network Constructed From Terminal Measurements , 2018, IEEE Transactions on Power Delivery.

[24]  Gehao Sheng,et al.  UHF partial discharge localization algorithm based on compressed sensing , 2018, IEEE Transactions on Dielectrics and Electrical Insulation.

[25]  Jian Li,et al.  Graphic approaches for faults diagnosis for Camellia insulating liquid filled transformers based on dissolved gas analysis , 2018, IEEE Transactions on Dielectrics and Electrical Insulation.

[26]  Guozhi Zhang,et al.  Study on localization of transformer partial discharge source with planar arrangement UHF sensors based on singular value elimination , 2018, AIP Advances.

[27]  Balaji Srinivasan,et al.  Robust Classification of Partial Discharges in Transformer Insulation Based on Acoustic Emissions Detected Using Fiber Bragg Gratings , 2018, IEEE Sensors Journal.