Title :
Analysis of resonance in transformer windings under very fast transient overvoltages
Author :
Sun, Haifeng ; Liang, Guishu ; Zhang, Xile ; Cui, Xiang
Author_Institution :
Sch. of Electr. Eng., North China Electr. Power Univ., Baoding
fDate :
Feb. 27 2006-March 3 2006
Abstract :
To study the resonance in transformer windings, under very fast transient overvoltages (VFTOs) generated by switching operations in gas insulated substation (GIS), a single input and multiple output circuit model is presented in this paper which is based on multi-conductor transmission line (MTL) model of transformer windings. The procedure to determine the transfer function is deduced. The resonant frequencies and the location of resonance are determined by the analysis of amplitude frequency response characteristics. For validation, the calculated results are compared with the measurements on a transformer winding model and the result is satisfactory
Keywords :
frequency response; gas insulated substations; transformer windings; GIS; amplitude frequency response; gas insulated substation; multiconductor transmission line; resonance; switching operations; transformer windings; very fast transient overvoltages; Gas insulation; Power system transients; Power transformer insulation; Resonance; Substations; Surges; Switchgear; Switching circuits; Transient analysis; Windings;
Conference_Titel :
Electromagnetic Compatibility, 2006. EMC-Zurich 2006. 17th International Zurich Symposium on
Conference_Location :
Singapore
Print_ISBN :
3-9522990-3-0
DOI :
10.1109/EMCZUR.2006.214964
