山东电力技术2025，Vol.52Issue(1)：81-88,8.DOI:10.20097/j.cnki.issn1007-9904.2025.01.009
非晶合金变压器出口短路状态下绕组温度分布特性研究
Research on Temperature Distribution of Outlet Short-circuit Hot Spots in Amorphous Alloy Transformer Winding
摘要
Abstract
The occurrence of an outlet short circuit fault on the load side can cause a rapid increase in the temperature of the transformer winding.Mild cases can cause insulation aging of the winding,reduce equipment durability,further can lead to insulation failure and damage to the distribution transformer.The special winding structure used in power transformers determines that the hot spot temperature and position of the winding are difficult to obtain in practical tests,especially when the winding of amorphous alloy transformers adopts a rectangular structure,the risk of equipment burnout caused by outlet short circuit faults is greater.This article takes an SBH15 amorphous alloy transformer as an example and uses COMSOL simulation modeling to study the temperature distribution characteristics of the winding after the outlet short circuit fault,revealing the distribution law of temperature along the winding and the hot spot temperature value.Research has shown that the rectangular winding of amorphous alloy transformers has a higher temperature along the long axis than the short axis.The winding temperature in the low voltage state is higher than that in the high voltage state,and the maximum temperature is reached at the junction of the long axis in the low voltage state of the winding.Finally,specific suggestions were proposed to improve its heat resistance.关键词
非晶合金/变压器/矩形绕组/出口短路/热点温度Key words
amorphous alloy/transformer/rectangular winding/short-circuit/hot spot temperature分类
信息技术与安全科学引用本文复制引用
刘兴华,李飞,赵彦龙,咸日常,陈磊..非晶合金变压器出口短路状态下绕组温度分布特性研究[J].山东电力技术,2025,52(1):81-88,8.基金项目
国网山东省电力公司科技项目"电力变压器出口短路条件下绕组热点温度及其绝缘寿命研究"(520603230005).Science and Technology Project of State Grid Shandong Electric Power Company"Research on Hotspot Temperature and Insulation Life of Winding of Power Transformer Under Its Exit Short Circuit Condition"(520603230005). （520603230005）
