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直流偏磁下变压器振动的仿真及实验研究

, PP. 427-433

Keywords: 直流偏磁,变压器,固有频率,振动测试,模态实验

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Abstract:

本文对直流偏磁引起电力变压器振动问题展开研究。首先对变压器固有频率做了仿真及模态实验,分析了振动测量的基本理论。在此基础上,对该变压器进行振动测试。给出了不同接缝及直流偏磁条件下测点振动强度的变化趋势、位移有效值及测点振动位移时域和频域波形。最后,在理论及实验基础上,总结变压器振动的基本规律,得出减小振动的基本方法。为大型电力变压器在直流偏磁条件下的振动问题,提供了实验参考。

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