Title :
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
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;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704679
