Thermal field modeling and characteristic analysis based on oil immersed transformer

Oil-immersion transformer plays an important role in the operation of power system, and its reliable operation is the basis of the safe and economic operation of power system. Transformer internal failure will not only cause the transformer to stop, but also damage, affecting the proper operation of the power system. The transformer is often in a high-temperature and high-pressure environment during its operation, so it is difficult to effectively and accurately protect the transformer from failure in the harsh working environment. Because the existing methods can not detect and protect the faults of transformer equipment sensitively and accurately, based on this, this paper carried out the research on the detection and protection of oil immersed transformer. By analyzing the calculation results, the relationship between the temperature rise of the transformer structure and the ambient temperature is discussed. It is found that the higher the ambient temperature of the transformer, the greater the harm to the equipment. High temperature area is mainly concentrated at the pull plate of transformer. This provides a reference for making the starting strategies of transformers in different environments, and helps to avoid mechanical structure damage and insulation aging damage caused by temperature.

Automated summary

Oil-immersion transformer plays a crucial role in the power system and its reliable operation is vital for safe and economical system functioning. Internal failures can lead to transformer shutdown and damage, impacting the overall operation of the power system. Due to the harsh working conditions with high temperature and pressure, effectively and accurately protecting the transformer from failures is challenging. Existing methods fail to sensitively and accurately detect and protect transformer faults. Therefore, this paper focuses on the research of detection and protection of oil-immersion transformers. Through analyzing calculation results, the relationship between temperature rise of the transformer structure and the ambient temperature is discussed. It is observed that higher ambient temperatures pose greater harm to the equipment, with the high-temperature area primarily concentrated at the pull plate. This provides valuable insights for developing startup strategies in different environments and helps prevent mechanical structure and insulation aging damages caused by temperature.