Research Methods on Winding Hot-point Temperature of Oil-immersed Transformer
This paper based on the heat generation of iron core and windings of transformers, makes a detailed analysis of production costs of iron core and load losses and the influence on top oil temperature and hot-spot temperature of transformers. It also explains clearly the meanings of parameters in winding hot-point temperature equation recommended by GB/T 15164-1994 Loading Guide for Oil-immersed Power Transformers. And adjustments and revisions are made on the winding index and oil and fat item to get more reasonable corresponding physical significance of them. At the end, a comparison is made between the recommended equation calculation results and improved equation in loading guide. Although there is a similar tendency of hot-point temperature of the two and the calculation results are not in great different, a more reliability is in improved equation.
power transformer hot-spot t emperature core losses load losses
Yunpeng Lv Shuguang Liu Huifeng Zhang
Electronic Information College, Xian Polytechnic University, Xian, 710048
国际会议
太原
英文
722-725
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）