What To Do About Oil Leakage And Leakage in Distribution Transformers

There are also many leakage phenomena of transformer oil in distribution transformers. Due to leakage, the amount of oil in the transformer decreases, the oil level decreases, and air and water vapor infiltrate, accelerating the oxidation of the oil and causing its deterioration. This increases the viscosity of the oil, reduces the convection speed, affects the heat dissipation of the transformer, and causes a higher temperature rise, which further accelerates the deterioration of the oil. At the same time, the deteriorated oleic acid increases, leading to a decrease in the insulation resistance of the winding and even damaging the insulation. Over time, this will inevitably lead to transformer damage. The following measures can be taken: ① Identify the areas of oil leakage and take appropriate measures; ② Check if the transformer oil has deteriorated and perform a simple analysis of the oil. If the transformer oil gradually changes from the initial light yellow to orange, brown, and the viscosity of the oil is high, it indicates that the transformer oil has deteriorated and must be purified or replaced; ③ When the transformer oil has not deteriorated, check if the oil level is too low. If it is too low, add oil to the scale marked on the transformer oil storage tank; ④ Check the insulation resistance of the winding.