怀化干式变压器：绕组热点温升

绕组热点温升 　　
怀化干式变压器热点温升是设计和运行部门关心的热点之一，因为它关系到安全运行和绝缘寿命。
绕组热点温升与温度沿绕组高度方向的分布，与各相冷却程度的不同及气道布置方式及尺寸等因素有关.并在较大范围内变化。
由于怀化干式变压器两边柱与中柱的绕组的平均温升不相等，以及联结组不同.即Yyn0、Dyn11的平均温升不同.从而使热点温度与平均温度之比不同，因此，热点温升求取还在很大程度上依赖于实测值。
对于树脂绝缘怀化干式变压器高压绕组采用分段层式绕组。当树脂绝缘为2-5mm时其包封内部温差为2-3℃。

Winding hot spot temperature rise

Dry-type power transformer hot spot temperature rise is one of the hot spots of the design and operation departments concern, because it is related to the safe operation and insulation life.
Winding hot spot temperature rise and the temperat传 真：0635-8888109ure along the the winding height direction of the distribution, and the respective邮 箱：1262980066@qq.com phases different and airway arrangement and size and other factors of the degree of cooling and the change in the wide range.
Average temperature rise of the windings of dry type power transformers both sides of the column in the column are not equal, and the Connection that Yyn0 Dyn11 the average temperature rise so that the hottest temperature with the ratio of the average temperature, therefore, the most hot The Temperature Rise strike still largely dependent on the measured value.
Segmented layer winding resin insulation dry-type power transformer high voltage winding. Within its encapsulation temperature difference of 2-3 ° C when the resin insulating 2-5mm.

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