Modeling of partial discharge activity in spherical cavities within a dielectric material

In this paper, a model for a spherical cavity within a homogeneous dielectric material was developed using finite element analysis (FEA) software. The model was used to study the influence of different cavity conditions on local electric field distribution and consequent PD activity. The study involved variation of cavity diameter and cavity location within the dielectric material. In addition, experimental measurements were undertaken using epoxy samples containing single spherical cavities of different diameters.

[1]  H. Edin,et al.  Influence of cavity size and cavity location on partial discharge frequency dependence [polymer insulation] , 2004, The 17th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2004. LEOS 2004..

[2]  P. Lewin,et al.  Modeling of Surface Charge Decay in a Spherical Cavity within a Solid Dielectric Material using Finite Element Analysis , 2009 .

[3]  K. Frohlich,et al.  Simulations of partial discharges of small microcracks parallel to the electrical field in polymeric materials , 2002, Annual Report Conference on Electrical Insulation and Dielectric Phenomena.

[4]  P. Lewin,et al.  MODELLING OF SURFACE CHARGE DECAY IN A SPHERICAL CAVITY WITHIN A SOLID DIELECTRIC MATERIAL USING FINITE ELEMENT ANALYSIS , 2009 .

[5]  L. Niemeyer.  A generalized approach to partial discharge modeling , 1995 .

[6]  G. Chen,et al.  Modeling of Partial Discharges from a Spherical Cavity within a Dielectric Material under Variable Frequency Electric Fields , 2008, 2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.

[7]  Hans Edin,et al.  Partial discharges in cylindrical cavities at variable frequency of the applied voltage , 2005 .

[8]  Pietro Romano,et al.  On PD mechanisms at high temperature in voids included in an epoxy resin , 2001 .

[9]  Modelling of temporal temperature and pressure change due to partial discharge events within a spherical cavity in a solid dielectric material using finite element analysis , 2010, 2010 International Conference on High Voltage Engineering and Application.

[10]  M. G. Danikas,et al.  Partial Discharges in Ellipsoidal and Spheroidal Voids , 1991 .

[11]  I. W. McAllister.  Partial discharges in spheroidal voids. Void orientation , 1997 .

[12]  P. L. Lewin,et al.  Partial discharge modelling in a spherical cavity within a dielectric insulation material as a function of frequency , 2009, 2009 IEEE Electrical Insulation Conference.

[13]  K. Frohlich,et al.  Probability of partial discharge inception in small voids , 2001, 2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225).

[14]  L. Niemeyer,et al.  Measurement and simulation of PD in epoxy voids , 1995 .

[15]  E. Gulski,et al.  Computer-aided recognition of discharge sources , 1992 .

[16]  Hazlee A. Illias,et al.  Modelling of partial discharge activity in different spherical cavity sizes and locations within a dielectric insulation material , 2009, 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials.

[17]  M. Kurrat,et al.  Partial Discharge Diagnostics of Micro Cavities in Epoxy Insulating Materials and their Modelling , 2008, Conference Record of the 2008 IEEE International Symposium on Electrical Insulation.