Design and application of electric-field sensor for measuring PD signals in high voltage equipments

Author

Lee, K.W. ; Park, S.H. ; Lim, K.J. ; Kang, S.H.

Author_Institution

Dept. of Electr. Eng., Chungbuk Nat. Univ., South Korea

Volume

2

fYear

2003

fDate

1-5 June 2003

Firstpage

828

Abstract

It is very difficult and dangerous to measure partial discharge from high voltage equipments in outdoor situation. But that is very important thing for preventing them from more serious accident by defects made by insulating degradation. This paper provides useful method to detect PD signals easily without any dangerous situation. Electric field sensor by the principle of capacitor can detect PD signals without direct connection between sensor and high power equipment and has very wide frequency range suitable for noise rejection. Electric field sensor and related circuit for processing PD signal showed good performance as a PD sensor when it is applied to simulated high power equipment generating PD pulse.

Keywords

UHF antennas; capacitive sensors; dipole antennas; electric field measurement; equivalent circuits; interference suppression; partial discharge measurement; voltmeters; PD pulse generation; PD sensor; PD signal measurement; capacitor principle; electric-field sensor; high voltage equipments; insulating degradation; wide frequency range noise rejection; Accidents; Capacitive sensors; Degradation; Electric variables measurement; Insulation; Partial discharge measurement; Partial discharges; Signal design; Signal detection; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on

ISSN

1081-7735

Print_ISBN

0-7803-7725-7

Type

conf

DOI

10.1109/ICPADM.2003.1218547

Filename

1218547