大型变压器换油残油冲淋方法的研究和应用

通过一例冲洗主变残油,研制和开发残油冲洗车,成功地将某超高压主变油介质用进口油换成用国产油；经模拟新油换入后的吸附过程,并作吸附前后T501含量变化试验,发现XD(R)基本不吸附T501抗氧化剂,吸附后油烃组成没有变化；进行了换油后的吸附,进一步对线圈内残油进行了充分置换；分析了换油前后变压器油介损变化的情况,得出用该...

Study and Application on the Method of Washing Away the Expiring Old Oil in Large Transformer

This article introduced the development of the oil residue flushing vehicle, it can help change the foreign products of extra-high voltage main-transformer oil with domestic products; by simulating the absorbing process of the new oil and measuring the change of the T501 content, found XD® absorbent basically did not absorb T501 antioxidant, and the components of the hydrocarbon oil did not change; the absorption after oil-change further refreshed the oil residue in the coil; analysed the change of dielectric loss of the transformer before and after changing oil, drew the conclusion that by using the oil residue flushing vehicle plus the XD® absorbent could keep the stability of all performances of transformer oil after oil-change. .