On-line monitoring of winding deformation of power transformer

Author

Xu, D.K. ; Huang, J.H. ; Li, Y.M.

Author_Institution

R&I Center, GuoDian NanJing Autom. Co. Ltd., China

fYear

2001

fDate

2001

Firstpage

853

Lastpage

856

Abstract

The feasibility of estimating transformer winding deformation by measuring short-circuit reactance is expounded. Based on the theoretical research, the on-line measurement system for short-circuit reactance of a transformer is proposed. The study on a power transformer in actual operating condition shows that the on-line method is satisfactory for detecting short-circuit reactance variations with high degree of accuracy and good stability, and can be used for detecting deformation in the transformer windings

Keywords

computerised monitoring; electric reactance measurement; fault diagnosis; power transformers; short-circuit currents; transformer windings; 10 kV; 110 kV; 31500 kVA; on-line method; on-line monitoring; operating condition; power transformer; short-circuit reactance measurement; stability; transformer winding deformation estimation; winding deformation; Accidents; Equivalent circuits; Impedance; Monitoring; Oil insulation; Power system stability; Power transformer insulation; Power transformers; Testing; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on

Conference_Location

Himeji

Print_ISBN

4-88686-053-2

Type

conf

DOI

10.1109/ISEIM.2001.973812

Filename

973812