Analysis of Improvement Scheme of New Oil Pool in Series of Substation Based on Mathematical Simulation Application

In the world, substations are indispensable infrastructures in various cities, and oil-immersed transformers are widely used in various substations because of their good insulation, good thermal conductivity, high reliability, and low transformer oil prices. Due to various technologies, conditions and other factors, frequent occurrences of substation accidents in the world. Accident oil pool is the last “line of defense” for transformer insulation oil leakage. However, in the daily operation of substations, due to the low frequency of use, it is often overlooked and cannot attract the attention of relevant personnel. When the existing accidental oil sump in the substation cannot meet the demand, three improvement schemes for the new oil sump in series are proposed. And compare and analyze the over-standard time and maximum over-scalar amount of the original design oil sump and the improved oil sump under different working conditions. The results show that, among the three improvement schemes, the way of connecting the upper part and the upper part, and the lower part and the lower part at the same time has the best effect.