变压器低频短路加热干燥法铁心饱和问题研究

The Study on Iron Core Saturation of Large Transformer in Low Frequency Heating

深入分析变压器低频加热工况下,电压幅值和电压频率对变压器铁芯饱和产生的影响,提出了变压器低频加热过程中防止变压器铁芯饱和的约束条件及饱和临界频率简化公式,试验结果验证文中所述方法正确、可行,为工程人员完善变压器低频加热控制技术提供了重要的工程经验和理论依据。

The conditions of frequency selection for transformer in low frequency heating are deeply analyzed,and the influence of voltage and frequency on transformer core saturation is analyzed.The constraints conditions witch how to aviod iron core saturation of transformer and minimum heating frequency formulas in low frequency heating process are proposed,the simulation results show the correctness of theoretical analysis.It will provide important theoretical basis for engineering practice.