高压变压器纠结式线圈振荡特性的研究

Research of Oscillatory Characteristics for Interleaved Windings of High-Voltage Transformers

高压变压器纠结式线圈目前已广泛地用于不同容量、不同电压等级的变压器中。然而,最常用的纠结式线饼在陡波和截波作用下有一种意料不到的很大的内部振荡。本文对此作了研究,建立了线饼等值计算模型,分析了它的振荡特性,从理论上导出了沿线匝电压谐波和电流谐波的分布,进一步揭示了发生振荡的原因和削弱振荡的方法。

Interleaved—turn high-voltage transformer windings have found uses in many types of transformers withe different ratings. However, it is discovered that the most-commonly-used forms of interleaved windings have an unexpected large internal oscillatory response to choppedwave or step wave impulse voltage. This paper studies this problem. The equivalent mathematical model for twin interleaved is given. This paper reports the characteristics of internal oscillation, and the distributions of voltage and current sinusoidal resonant component along the conductor have been deduced. This paper diseusses as well the reason for causing the oscillation and the method of reducing the oscillation.