In view of the operation state identification and management of oil-immersed transformer

an on-line monitoring method based on transformer top oil temperature rise is proposed

which is used to monitor whether the oil-immersed transformer is in an abnormal operating state.In this paper

the relationship between the operating state of the transformer and the temperature rise of the top oil of the transformer is analyzed.The calculation method of the theoretical value of the temperature rise of the top oil of the transformer is expounded.The sampling method of the oil temperature rise data and the strategy of abnormal data identification are formulated.The process and method for monitoring the abnormal operating state of the transformer based on the top oil temperature rise data are designed.Finally

the experimental results show that the proposed method can effectively monitor on-line the operational status of oil-immersed transformers.