Publication result detail

Effect of Voltage and Thermal Aging on the Characteristics of Partial Discharges in High-temperature Insulators

KOKTAVÝ, P.; KOKTAVÝ, B.

Original Title

Effect of Voltage and Thermal Aging on the Characteristics of Partial Discharges in High-temperature Insulators

English Title

Effect of Voltage and Thermal Aging on the Characteristics of Partial Discharges in High-temperature Insulators

Type

Paper in proceedings (conference paper)

Original Abstract

One of the most important sources of insulating material degradation is the partial discharge generation process. It is therefore essential to study the effect of thermal and voltage aging on the characteristics of partial discharges in insulators intended for high-temperature applications. In this paper, a high-temperature material called thermikanit 26.000 is studied. It was subject to thermal aging at 320 ºC for 500 hours and, subsequently, voltage aging at AC voltages ranging from 3 kV to 5 kV, the exposure times having varied from 20 to 280 hours. To study the partial discharges, a ramp voltage was applied to the specimens, and to characterize the partial discharges occurring in the specimens, the time mean value of narrow-band noise at a band-centre frequency of 390 Hz and an effective band width of 14 Hz, was selected. This characteristic appears to depend strongly on the exposure type and duration.

English abstract

One of the most important sources of insulating material degradation is the partial discharge generation process. It is therefore essential to study the effect of thermal and voltage aging on the characteristics of partial discharges in insulators intended for high-temperature applications. In this paper, a high-temperature material called thermikanit 26.000 is studied. It was subject to thermal aging at 320 ºC for 500 hours and, subsequently, voltage aging at AC voltages ranging from 3 kV to 5 kV, the exposure times having varied from 20 to 280 hours. To study the partial discharges, a ramp voltage was applied to the specimens, and to characterize the partial discharges occurring in the specimens, the time mean value of narrow-band noise at a band-centre frequency of 390 Hz and an effective band width of 14 Hz, was selected. This characteristic appears to depend strongly on the exposure type and duration.

Keywords

Partial discharges, Electric Charge, Aging, High-temperature Insulating material

Key words in English

Partial discharges, Electric Charge, Aging, High-temperature Insulating material

Authors

KOKTAVÝ, P.; KOKTAVÝ, B.

RIV year

2011

Released

01.01.2004

Publisher

Slovak University of Technology

Location

Bratislava

ISBN

80-227-2110-7

Book

DISEE 2004, Dielectric and Insulating Systems in Electrical Engineering

Pages from

174

Pages count

4

BibTex

@inproceedings{BUT12228,
  author="Pavel {Koktavý} and Bohumil {Koktavý}",
  title="Effect of Voltage and Thermal Aging on the Characteristics of Partial Discharges in High-temperature Insulators",
  booktitle="DISEE 2004, Dielectric and Insulating Systems in Electrical Engineering",
  year="2004",
  pages="4",
  publisher="Slovak University of Technology",
  address="Bratislava",
  isbn="80-227-2110-7"
}