The safety of power system operation is endangered by the phenomenon of'replacing copper with aluminum'in trans-former production.In order to identify the material of transformer winding simply and effectively,an identification method and experi-mental scheme based on sweep resistance method were proposed,and a set of transformer winding material detection system was built according to the scheme.Firstly,the identification method based on sweep resistance method was deduced and proved.Then,the per-formance of the detection system based on this method was tested.Finally,different types of transformers were verified by experiments.The experimental results show that the method can quickly and efficiently identify the material of transformer winding,and has high en-gineering practical value.
关键词
铜铝变压器/扫频电阻法/趋肤效应/谐波电阻
Key words
copper aluminum transformer/sweep frequency resistance method/skin effect/harmonic resistance
维普
万方数据