变压器绕组纵绝缘连续式绕组分段并联MOV保护

The Development of the Protection for the Longitudinal Insulation of Transformer Windings

介绍了目前国内外所采用的各种变压器绕组的内保护方法及其发展 ,并提出了连续式绕组分段并接 MOV(Mental Oxide Varistor)的保护方式 ,对该方法的原理以及MOV保护效果的分析及试验结果表明 :变压器绕组的此种保护方式可有效地限制雷电冲击过电压及局部谐振过电压 ,并降低变压器的制造成本。

In this paper the inner protection methods of windings used in China and foreign countries are presented, and the new development of the protection of transformer longitudinal insulation is clarified. And the paper gives the protection method by MOVs parallel to multi-section of continuous winding, and the principle and the effect of the method are analyzed in detail.