全绝缘有载调压变压器雷电冲击性能的改进

Improvement on Properties to Withstand Lightning Impulse for Transformer with Uniform Insulation and OLTC

分析了线端调压全绝缘有载调压变压器的冲击分布，提出把高压绕组中部断开，调压绕组接在高压绕组中部，可以有效改善冲击性能，减小变压器主绝缘距离。

The distribution of impulse for terminal voltage-regulating transformer with uniform insulation and OLTC is analysed in this paper. A way of voltage-regulating in middle-section of HV winding is presented to improve the properties to withstand lightning impulse effectively and to decrease the distance of main insulation between windings of transformer.