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Transformers constitute a vital component in electrical power systems, and transformer vibrations significantly impact the secure and stable operation of these systems. To effectively mitigate transformer vibrations, this paper focuses on the study of optimization design methods targeting minimal vibration. By incorporating the flux characteristics of three-phase transformers and leveraging magnetostrictive calculation formulas, a derivation is presented for the expression of magnetostriction in transformers, thereby proposing an analytical method for computing the mean acceleration of transformer vibrations. Additionally, based on the electromagnetic distribution within transformers, a formula for calculating losses in three-phase transformers is put forward. Considering the winding layout and magnetic flux distribution in air, analytical expressions for transformer volume and leakage inductance are established.On this foundation, a design procedure is introduced for the low-vibration optimization of industrial frequency three-phase water-cooled transformers, employing a particle swarm optimization algorithm. In accordance with the optimized design scheme, a 500kVA prototype transformer was fabricated, and its vibration acceleration, losses, volume, and leakage inductance were experimentally tested. Comparative analysis with the previous generation prototype verified the superiority and effectiveness of the proposed design approach.

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Optimization Design Methodology for Low-Vibration Industrial-Frequency Three-Phase Water-Cooled Transformers

  • 会议论文

  • 发表日期：

    2025年

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  • Fang Wu,
  • Jiuqing Cai,
  • Rui Li,
  • Yong Li,
  • Sijia Hu,
  • Yinglong Zhao

摘要

Transformers constitute a vital component in electrical power systems, and transformer vibrations significantly impact the secure and stable operation of these systems. To effectively mitigate transformer vibrations, this paper focuses on the study of optimization design methods targeting minimal vibration. By incorporating the flux characteristics of three-phase transformers and leveraging magnetostrictive calculation formulas, a derivation is presented for the expression of magnetostriction in transformers, thereby proposing an analytical method for computing the mean acceleration of transformer vibrations. Additionally, based on the electromagnetic distribution within transformers, a formula for calculating losses in three-phase transformers is put forward. Considering the winding layout and magnetic flux distribution in air, analytical expressions for transformer volume and leakage inductance are established.On this foundation, a design procedure is introduced for the low-vibration optimization of industrial frequency three-phase water-cooled transformers, employing a particle swarm optimization algorithm. In accordance with the optimized design scheme, a 500kVA prototype transformer was fabricated, and its vibration acceleration, losses, volume, and leakage inductance were experimentally tested. Comparative analysis with the previous generation prototype verified the superiority and effectiveness of the proposed design approach.