Analysis of Abnormal Hydrogen Content in 750kv Transformer Cooler Oil

After the 750 kV transformer is passed, it is stored after being stated, and the oil chromatography test is performed before it is put into operation. the hydrogen abnormalities in the insulating oil are tested at different devices at the scene. the return of the factory for the disintegration and test of the cooler. the result shows that the cooler moisture is the main reason why the hydrogen content in this insulation oil is frequent than the attention value, and some suggestions are made for the subsequent cooler to prevent the moisture of the cooler.