Partial Discharge measurement for medium voltage cables using different voltage wave forms

Author

El-Refaie, El-Sayed M. ; Besheir, Mohi ; Abd Elrahman, M.K. ; Saad, Rola

Author_Institution

Helwan Univ., Cairo, Egypt

fYear

2014

fDate

1-5 June 2014

Firstpage

315

Lastpage

318

Abstract

Partial Discharge (PD) is the most important issue that arise when testing service aged and non-aged cables. For long time, High Voltage Direct Current (HVDC) was used to detect the occurrence of PD activity in cables. Due to technical reasons, the HVDC was replaced by the Very Low Frequency (VLF). Wide range of frequencies and wave forms were used for this purpose. This paper presents an evaluation to the ability of VLF to detect successfully the presence of PD. The study was based on laboratory testing data collected from medium voltage cable having artificial defects. PD was measured on healthy and unhealthy samples of 12/20 kV cables with VLF as well as with power frequency. Different wave forms such as sinusoidal and rectangular with different frequencies in the range from 0.01Hz to 0.1 Hz were used.

Keywords

HVDC power transmission; partial discharge measurement; power cables; HVDC; VLF; artificial defects; frequency 0.01 Hz to 0.1 Hz; high voltage direct current; laboratory testing; medium voltage cables; partial discharge measurement; rectangular waveforms; sinusoidal waveforms; unhealthy samples; very low frequency; voltage 12 kV; voltage 20 kV; voltage waveforms; Cable insulation; Educational institutions; Frequency measurement; Lead; Pulse measurements; Reliability; Stress measurement; Cable testing; Partial discharge; Very low frequency; XLPE medium voltage cables;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials (ISEIM), Proceedings of 2014 International Symposium on

Conference_Location

Niigata

Type

conf

DOI

10.1109/ISEIM.2014.6870782

Filename

6870782