Study on the way of pre-compression of large transformer winding and its dynamic analysis during transport

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (24) : 111-116.

Chen Jian-yuan Yue Hong-yuan Xu Qiang

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Abstract

It is the most important thing to ensure the integrity and safety of transformer when shipped. In this essay, the transformer winding and the equipment with pre-compression are simulated by the nonlinear finite element method. The loss coefficient for this way of pre-compression is analyzed, and the variation law of the safety factor of block is given. Finally, the relations between the changes of pre-compression and safety factors on the transformer under shipped are investigated. The results show that the way and effects of the pre-compression on the large transformer windings can be simulated distinctly by life-death element technique, and the impact effects of transport can be reflected reasonably by dynamic analysis when the large transformer is shipped.

Key words

transformer / equipment with pre-compression / numerical simulation / loss coefficient / safety factor

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Chen Jian-yuan Yue Hong-yuan Xu Qiang . Study on the way of pre-compression of large transformer winding and its dynamic analysis during transport[J]. Journal of Vibration and Shock, 2015, 34(24): 111-116

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