Charge concept in partial discharge in power cables

verfasst von
Mahdi Mahdipour, Asghar Akbari, Peter Werle
Abstract

Present paper discusses Partial Discharge (PD) occurrence and its relevant parameters in power cables. A spherical void in the insulation of a power cable is assumed as the origin of PD. To study PD in power cables, a model based on the three capacitor type is proposed, and the associated circuit elements for the spherical void and different layers of the cable are obtained with closed form solutions. In the procedure of deriving parameters of the model, a defect column is selected with a particular geometry which its boundaries are in the direction of the electric field. The results for PD magnitude and current pulse are acquired from the proposed model, along with Finite Element Method (FEM) simulations. Both methods show matching results but in contrast with the dipole model. FEM simulations are accomplished in 3D, on account of spherical geometry of the void. Other simulation results achieved from FEM and the model are as well included.

Organisationseinheit(en)
Fachgebiet Hochspannungstechnik und Asset Management (Schering-Institut)
Externe Organisation(en)
K.N. Toosi University of Technology
Typ
Artikel
Journal
IEEE Transactions on Dielectrics and Electrical Insulation
Band
24
Seiten
817-825
Anzahl der Seiten
9
ISSN
1070-9878
Publikationsdatum
04.2017
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Elektrotechnik und Elektronik
Elektronische Version(en)
https://doi.org/10.1109/TDEI.2017.006370 (Zugang: Geschlossen)