Effects of acid vapor and water vapor on corona partial discharges of stator windings

Author

Chuanyang Li ; JianCheng Song ; Lingyan Lin ; Zhipeng Lei ; Wen Su

Author_Institution

Shanxi Key Lab. of Coal Min. Equip. & Safety Control, Taiyuan Univ. of Technol., Taiyuan, China

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

1185

Lastpage

1188

Abstract

This paper discussed the effects of acid vapor and water vapor of different relative humility on corona partial discharge (PD) taken place in stator windings. Phase resolved partial discharge (PRPD) system was adopted to show the characteristics of PD. The experiment results showed that the relative humidity (RH) of vapor with different chemical properties can suppress corona discharge to certain extent. The contribution of acidic vapor is much more significant than that of the water vapor in suppressing of the corona discharges. The corona discharge tends to change into creeping on the surface of the ground wall insulation at high RH, and in this condition PD could hardly be detected.

Keywords

corona; machine insulation; organic compounds; partial discharges; stators; PD; PRPD system; RH; acid vapor effect; corona partial discharge; ground wall insulation; phase resolved partial discharge system; relative humidity; stator winding; water vapor effect; Coils; Corona; Discharges (electric); Insulation; Monitoring; Partial discharges; Stator windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2013 IEEE Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/CEIDP.2013.6748193

Filename

6748193