Performance analysis of high voltage insulators surface condition using Time-Frequency Distribution

This paper presents the leakage current of polymeric and non-polymeric insulation materials in contaminated condition. High Density Polyethylene (HDPE) and Polypropylene (PP) are selected as polymeric materials. Meanwhile, glass is selected as non-polymeric material. The purpose of this study is to identify performance of insulator surface condition against its tracking and erosion and grouped according to the shapes of leakage current waveform. By using Incline Plane Tracking (IPT) test method for evaluating resistance to tracking and erosion is complying with BS EN 60587-2007. The result of leakage current waveforms were captured and recorded in continuous duration time. From that result, monitoring signal output will analyze using Time-Frequency Distribution (TFD). Spectrogram is used as a diagnostic tool to analysis time-frequency representation (TFR). Although, the harmonic components for polymeric and non-polymeric material can be define by Spectrogram. TFR result also will estimate to identify the signal characteristic patterns of the materials.

[1]  E. Kuffel,et al.  High voltage engineering , 2006, 2006 Eleventh International Middle East Power Systems Conference.

[2]  J. Mackevich,et al.  Polymer outdoor insulating materials. Part I: Comparison of porcelain and polymer electrical insulation , 1997 .

[3]  K. Ishii,et al.  Dielectric properties of polymer blend of polypropylene and polyethylene , 1991, [1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials.

[4]  S. Gubanski,et al.  Modern outdoor insulation - concerns and challenges , 2005, IEEE Electrical Insulation Magazine.

[5]  R. Hartings.  The AC-behavior of a hydrophilic and hydrophobic post insulator during rain , 1994 .

[6]  R. Hackam,et al.  Loss of hydrophobicity of high density polyethylene , 1997, IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.

[7]  A. Ghorbandaeipour,et al.  Inclined-plane tracking and erosion test according to the IEC 60587 Standard , 2009, IEEE Electrical Insulation Magazine.

[8]  M. Naidu,et al.  High Voltage Engineering , 1982 .

[9]  A. Ueda,et al.  Property of syndiotactic polypropylene and its application to insulation of electric power cable -property, manufacturing and characteristics , 2003, Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (Cat. No.03CH37417).

[10]  M. H. Jopri,et al.  Leakage current analysis on polymeric and non-polymeric insulating materials using time-frequency distribution , 2012, 2012 IEEE International Conference on Power and Energy (PECon).

[11]  A. Neuber,et al.  Electrical conduction in select polymers under shock loading , 2009, 2009 IEEE Pulsed Power Conference.