Capacitive Slot Coupler for on-line partial discharge monitoring of stator winding insulation

Author

Yong Joo Kim ; Geun Ju Kim ; Jung Il Kim ; Hee Dong Kim ; Tae Sik Kong

Author_Institution

Ansan Res. Div., KERI, Ansan, South Korea

fYear

2014

fDate

8-11 June 2014

Firstpage

235

Lastpage

240

Abstract

Authors introduce a novel on-line partial discharge monitoring sensor, which frequency band is in 100 kHz - 20 MHz. The novel sensor called CSC (Capacitive Slot Coupler) is very compact in size and could be inserted between wedge and stator bar. In this paper, an equivalent partial discharge detection circuit is introduced considering the various PD sources. And its capability in PD source identification is compared with the conventional PD sensors in sensitivity and frequency domain.

Keywords

computerised monitoring; detector circuits; machine insulation; partial discharges; sensors; stators; CSC; PD source identification; capacitive slot coupler; frequency 100 kHz to 20 MHz; frequency domain; on-line partial discharge monitoring sensor; partial discharge detection circuit; sensitivity domain; stator bar; stator winding insulation; wedge bar; Corona; Detectors; Discharges (electric); Fault diagnosis; Partial discharges; Stator windings; Windings; end winding discharge; internal discharge; on-line monitoring; partial discharge; slot discharge; stator bar;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference (EIC), 2014

Conference_Location

Philadelphia, PA

Print_ISBN

978-1-4799-2787-6

Type

conf

DOI

10.1109/EIC.2014.6869383

Filename

6869383