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Simulation Study on Torsional Deformation of Large Transformer Helical Winding
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Author: Yubin Xu, Chongyou Jing, Jianmin Wang, Feng Zhao, Dong Zhang
Abstract: The short-circuit force of the helical winding will contain a large tangential force when the transformer shorted. The combined action of axial current component and radial leakage magnetic field will produce great torque. This paper established the coupling model of two dimensional and three dimensional magnetic field-structural force field of helical winding and calculated the leakage magnetic field of transformer and the tangential force of helical winding .The tangential force size and distribution law of the low voltage helical winding are obtained. It tested the reliability of the calculation method through the comparison and analysis of two kinds of modeling. On the basis of this, we studied the influence of helical Angle and axial compression force on the tangential displacement of helical winding .The results show the method is efficient for reducing winding tangential displacement in product design.
Keywords: Helical Winding, Tangential Force, Torqu, Helix Angle, Axial Compression Force, Tangential Displacement
References:
[1] XU Ji-tai . Torque of High Current Helical Winding under Current Component and Current in Core [J].TRANSFORMER .2012,49(1):1-7.
[2] LIU Shuang, MENG Qing-min, LUO Jun-ting,et al. Analysis of Twist Problem of Helical Winding in Large Transformer [J].TRANSFORMER .2011,48(11):1-4.
[3] YANG Jun-hai,ZHANG Yuan-lu. Numerical calculation of mechanical characteristics for transformer in short-circuit and the influence of winding structural parameters on its performances[J]. Transformer, 1997, 34(10): 28-32.
[4] Zhao Z.R,Wu Y.J,Gu X.J,et al. Multi-physics coupling field finite element analysis on giant magnetostrictive materials smart component[J].Jourmal of Zhejiang University SCIENCE A,2009,10(5):653-660
[5] HE Yi-yan. Discussion on strentthening ability to withstand short-circuit of transformer in design, technology, structure and test, etc[J]. Transformer, 1997, 34(10): 1-6.
[6] Garciá B,Burgos J.C,Alonso A.M. Transformer Tank Vibration Modling as a Method of Detecting Winding Deformations—Part Ⅱ :Experimental Verification[J].IEEE Trans.Power Del.,2006,21(1):164-169
[7] Wang Jian-min,Jia Jian-gang,Liu Lan-rong. Research on Numerical Simulation of Three Dimensional Leakage Magnetic Field and Short Circuit Impedance of Phase-Shifting Rectifier Transformer ,2009,46(4):1-8
[8] Anouar Belahcen. Vibration of rotating electrical machines due to Magneromechanical coupling and magnetostriction[J].IEEE Transactions on Magnetices,2006,42(4):971-974.
[9] Michael E.,Hermann L. Investigation of load noise generation of large power transformer by means of coupled 3D FEM analysis [J].COMPEL,2007,26(3):788-799
[10] ZHOU Jian-ping, NI Qian-hang, YUAN Hua-ming. Treatment and diagnosis of winding deformation in a power transformer[J]. High Voltage Engineering, 2005, 31(10): 89-90.