油浸式电力变压器内部温度场及其绕组热点的数值计算研究

分析110 kV油浸式电力变压器内部的热量散失过程,并基于有限体积法计算油浸式电力变压器的温度场,通过变压器温度场模型分析判断油浸式电力变压器绕组热点及内部温度场分布情况,为变压器运行维护提供参考.研究表明,不同环境温度下,运行工况的变化对变压器温度场产生的影响是不同的,其内部热点温度和平均温度会随着负载率与环境温度的...

Study on Numerical Calculation of Internal Temperature Field and Winding Hot Spot of Oil-Immersed Power Transformer

This paper analyzes the internal heat loss process of 110 kV oil immersed power transformer,and calculates the temperature field of oil immersed power transformer based on finite volume method.Through the temperature field model of transformer,it studies and judges the distribution of winding hot spot and internal temperature field of oil immersed power transformer,which provides reference for operation and maintenance of transformer.The results show that under different ambient temperatures,the influence of operating conditions on transformer temperature field is different.The internal hot spot temperature and average temperature will increase with the increase of load rate and ambient temperature,but the hot spot location will not change basically.