Analysis of internal PD pulses accompanying with electrical tree in LDPE

Author

Kang, S.H. ; Park, Y.G. ; Shin, T. ; Lim, K.J. ; Zahn, M.

Author_Institution

High Voltage Lab., Chung-Buk Nat. Univ., Cheongju, South Korea

Volume

1

fYear

1998

Firstpage

126

Abstract

The correlation between propagation of electrical tree and internal partial discharges is discussed. We used specimens with needle-plane electrode system made of LDPE, observed inception and propagation of electrical tree by optical microscopy and investigated the characteristics of the partial discharge (PD) pulses accompanying with propagation of electrical tree. In the case of branch type tree, the length of the tree had a good linear relation with average discharge power of PD pulses. On the other hand, in the case of bush type tree, the area of the tree had a good linear relation with the average discharge power of PD pulses

Keywords

partial discharges; polyethylene insulation; trees (electrical); LDPE; average discharge power; branch type tree; bush type tree; insulation life; internal PD pulses; linear relation; needle-plane electrode system; needle-shaped void; optical microscopy; propagation of electrical tree; tree area; tree length; Application software; Electrodes; Needles; Optical microscopy; Optical propagation; Optical pulses; Partial discharges; Surface discharges; Trees - insulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on

Conference_Location

Arlington, VA

ISSN

1089-084X

Print_ISBN

0-7803-4927-X

Type

conf

DOI

10.1109/ELINSL.1998.704679

Filename

704679