Title :
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
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;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973812
