变压器绕组的内部保护

Internal Protection on Windings of Electric Power Transformer

为了改善电力变压器沿绕组起始电压分布不均匀的现象,针对绕组内部保护中的附加电容保护的并联补偿和串联补偿问题,分析了纠结式绕组插花结结式和插花纠结式线圈接线方式以及内屏蔽连续式绕组接线方式,通过理论分析,得出内屏蔽连续式绕组不仅要在大容量高电压变压器中采用,而且还要向较低电压等级如66 kV变压器中推广的结论。

The connection methods of entangling winding with sandwich-interleaved, interleaved winding and internal-shielded continuous winding were analyzed in this paper for the sake of improvement on non-uniform original-voltage distribution along the windings of electric power transformer. Aiming at these problems of parallel and serial compensation in winding internal protection with building out capacitor, the conclusion was obtained that uous winding can be used not only in large-capacitance and high-voltage electric power in relatively low-voltage electric power transformer, for example, 66 kV electric power internal-shielded contin transformer, but also transformer.