Transformer oil temperature prediction method based on simple temperature rise model

The invention discloses a transformer oil temperature prediction method based on a simple temperature rise model, and the method comprises the steps: S1, obtaining transformer historical data which isused for predicting the oil temperature of a transformer and comprises the oil temperature of the transformer, a load current, an environment temperature and corresponding time; S2, determining the oil temperature rise time length [delta]T of the transformer according to the historical data of the transformer; S3, performing temperature difference calculation according to the oil temperature risetime length [delta]T of the transformer; S4, matching the temperature difference calculated in S3 with the load current before [delta]T time; S5, fitting the temperature difference with the load current before [delta]T time to obtain a load current-temperature difference curve; S6, predicting the transformer oil temperature at the next moment according to the load current-temperature difference curve and the transformer oil temperature at the moment before the [delta]T time. According to the method, fitting is performed by using a small amount of historical data, and the oil temperature can be more accurately predicted.