DocumentCode :
2663372
Title :
Improved Modelling and Calculation on Electromagnetic Transient of Power Transformer
Author :
Zhe, Chen ; Yuanfang, Wen ; Guojun, Lu
Author_Institution :
Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan
Volume :
2
fYear :
2006
fDate :
14-16 Aug. 2006
Firstpage :
1
Lastpage :
6
Abstract :
Two novel methods, digital calculation based on Callahan algorithm and dynamic simulation based on MATLAB/SIMULINK software, are proposed in this paper to study the electromagnetic transient process caused by asynchronous energization of electric power transformer while taking non-linearity into consideration. The effectiveness and accuracy of the results are verified by each other. Then regularity of the inrush current generation is found and harmonics analysis by Fourier transform is done to provide relay protection criterion. Furthermore, different conditions influencing inrush current such as the saturation characteristics, residual flux and switching on time are investigated. Finally, measures to eliminate the inrush current are suggested to avoid similar electrical breakdown accident. This paper is of great value for the studies on the dynamic process within the power system, the precise design and smooth operation of high voltage apparatus, and the proper selection for operation values of relay protection equipment for the electrical facilities
Keywords :
Fourier transforms; mathematics computing; power transformer protection; relay protection; Callahan algorithm; Fourier transform; MATLAB-SIMULINK software; asynchronous energization; digital calculation; dynamic simulation; electric power transformer; electromagnetic transient process; harmonics analysis; high voltage apparatus; inrush current generation; relay protection criterion; Circuit faults; Electromagnetic modeling; Heuristic algorithms; MATLAB; Mathematical model; Power system dynamics; Power transformers; Protective relaying; Software algorithms; Surge protection; Callahan numerical algorithm; Dynamic simulation; Electromagnetic transient process; Inrush current;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
Type :
conf
DOI :
10.1109/IPEMC.2006.4778102
Filename :
4778102
Link To Document :
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