Research of on-line monitoring of moisture content in transformer oil

Author

Chen Xin-gang ; Chen Wei-gen ; Gu Liang-ling

Author_Institution

Chongqing Inst. of Technol., Chongqing, China

fYear

2008

fDate

10-13 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

The moisture distribution in the transformer and variation mechanism of moisture in oil is analyzed in this paper, and using relative saturation and temperature as characteristic parameters, a detail scheme of online moisture content monitoring in transformer oil is put forward. The polyimide-based capacitive humidity sensor and temperature sensor are employed in online monitoring moisture content in oil. Computer is utilized to sample and analyze the data from sensors. The experiment on test transformer confirms that the sensors can work reliably, and accurately reflect the moisture content in transformer oil. The proposed method can realize the purpose of on-line monitoring.

Keywords

condition monitoring; humidity sensors; power engineering computing; temperature sensors; transformer oil; online moisture content monitoring; polyimide-based capacitive humidity sensor; power transformer oil; temperature sensor; Circuit faults; Computerized monitoring; Condition monitoring; Humidity; Moisture; Oil insulation; Petroleum; Sensor phenomena and characterization; Temperature distribution; Temperature sensors; moisture content; on-line monitoring; sensor; transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Electricity Distribution, 2008. CICED 2008. China International Conference on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-3373-5

Electronic_ISBN

978-1-4244-3372-8

Type

conf

DOI

10.1109/CICED.2008.5211815

Filename

5211815