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Transformers play a critical role in power systems, and their stable operation directly affects the reliability of power transmission and distribution. This study aims to analyze the pressure distribution at the oil-paper interface of transformers under accelerated impact conditions using finite element analysis. Based on transformer structure and oil flow characteristics, a three-dimensional flow field simulation model of the winding region was constructed, with acceleration applied to simulate real-world impact scenarios. Simulation results indicate that during the initial phase of accelerated impact, pressures at the oil-paper interface rapidly increase. Furthermore, with increasing acceleration, the rate of pressure growth on the insulation paper surface within the transformer oil is significantly higher in deeper layers compared to upper layers. This research reveals the internal pressure distribution patterns of transformers under external impact conditions, providing a theoretical basis for further analysis of the electric field distribution at the oil-paper interface. It holds significant implications for enhancing transformer operational reliability and extending equipment lifespan.

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Simulation Study of Transformer Oil-Paper Interface Pressure Distribution Under Accelerated Impacts

  • 会议论文

  • 发表日期：

    2025年

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  • Longjiang Wei,
  • Yanyan Bao,
  • Feng Wang,
  • Kang Liu,
  • Yushuo Wu,
  • Hongyu Li,
  • Yongqiang Kang,
  • Shuaibing Li

摘要

Transformers play a critical role in power systems, and their stable operation directly affects the reliability of power transmission and distribution. This study aims to analyze the pressure distribution at the oil-paper interface of transformers under accelerated impact conditions using finite element analysis. Based on transformer structure and oil flow characteristics, a three-dimensional flow field simulation model of the winding region was constructed, with acceleration applied to simulate real-world impact scenarios. Simulation results indicate that during the initial phase of accelerated impact, pressures at the oil-paper interface rapidly increase. Furthermore, with increasing acceleration, the rate of pressure growth on the insulation paper surface within the transformer oil is significantly higher in deeper layers compared to upper layers. This research reveals the internal pressure distribution patterns of transformers under external impact conditions, providing a theoretical basis for further analysis of the electric field distribution at the oil-paper interface. It holds significant implications for enhancing transformer operational reliability and extending equipment lifespan.