干式变压器有限元仿真模型的电磁和振动分析

Electromagnetic and vibration analysis of dry transformer finite elementsimulation model

干式变压器在运行时存在着振动和噪声的问题,为了对干式变压器振动的规律与特点进行研究,该文建立了干式变压器本体振动的有限元仿真模型,通过电磁分析获得相应的磁场分布,然后利用结构动力学分析得到其本体振动的相关规律.通过对处于运行状态的变压器振动数据进行实测分析,得到变压器振动的特征频率,然后与仿真结果进行对比分析,可以发现变压器的振动存在特征频率.该文的研究结果可对干式变压器的减振降噪研究提供参考.

The dry-type transformers have vibration and noise problems during operation.In order to study the vibration rules and characteristics of dry-type transformer,the mechanism of vibration and noise generation of dry-type transformer were studied and simulated.The finite element simulation model of dry-type transformer vibration was established.The corresponding magnetic field distribution was obtained by electromagnetic analysis,and then the structural vibration was used to obtain the relevant laws of its vibration.The characteristic frequency of transformer vibration was obtained through the measured analysis of transformer vibration data in operation state.The characteristic frequency of transformer vibration was found by comparing and analyzing the simulation results.The results can provide a reference for the research of vibration reduction of dry-type transformers.