考虑集肤效应的变压器谐波损耗计算

Transformer's Harmonic Losses Calculation of Considering Skin-Effect

详细分析了变压器的损耗,依据叠加原理,建立了双绕组和三绕组变压器谐波等效模型;考虑集肤效应对绕组阻抗的变化规律,推导出变压器谐波损耗的计算式。算例结果表明,方法简便明了,所需数据较少,且计算误差在允许范围之内,对工程计算具有一定的指导价值。

This article first analyzed the loss of transformer,then established a two-winding transformer harmonic simplified model and three-winding transformer harmonic model based on the superposition principle,taking into account the variation of winding resistance due to the skin-effect,derived the transformer harmonic loss formula. The results shows that this method is simple and clear,requires less data,and the calculation error is within the allowable range. It has a guiding value for engineering calculations.