Title :
FE-based equivalent Circuits for simulating transformer internal Faults
Author :
Hu, Guanzhong ; Yao, Yingying ; Ni, Guangzheng ; Yang, Shiyou ; Xie, Junpeng
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
A simple and efficient model is proposed to detect transformer internal faults. The winding´s structure is preciously simulated for FEM. It is easy to be used for a transformer with internal turn-ground and turn-turn fault. Energy perturbation method is employed to calculate the equivalent circuit parameters of the transformer. With these parameters, state equations can be established to study the relationship among the terminal currents, flux and the fault locations. Through test of a transformer, it reveals that the method is reasonable and effective
Keywords :
equivalent circuits; fault diagnosis; finite element analysis; transformer testing; transformer windings; FEM simulation; energy perturbation method; equivalent circuit parameter calculation; state equations; terminal currents; transformer internal fault detection; turn-ground faults; turn-turn faults; winding structure; Circuit faults; Circuit simulation; Electrical fault detection; Equations; Equivalent circuits; Fault detection; Power system modeling; Power system simulation; Power transformer insulation; Power transformers;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1633050
