Title :
Behaviour of interturn fault in power transformer winding using high frequency components of discrete wavelet transform
Author :
Klomjit, J. ; Ngaopitakkul, A.
Author_Institution :
Dept. of Electr. Eng., King Mongkut´s Inst. of Technol., Bangkok, Thailand
Abstract :
Behaviour of interturn winding fault signals in a three-phase two-winding transformer with delta connected primary and wye connected secondary, using high frequency components of DWT is proposed in this paper. The mother wavelet daubechies4 (db4) is employed to decompose high frequency components from signals. Various case studies have been done including the variation of fault inception angles, fault types, and fault locations. The result will be useful in the development of a fault detecting scheme for power transformer in the future.
Keywords :
discrete wavelet transforms; fault diagnosis; power transformers; transformer windings; DWT; delta connected primary; discrete wavelet transform; fault detecting scheme; fault locations; high-frequency components; interturn fault in power transformer winding; interturn winding fault signals; mother wavelet daubechies4; three-phase two-winding transformer; wye connected secondary; Discrete Wavelet Transform; EMTP; Interturn Fault; Power Transformer;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2012 15th International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4673-2327-7
