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Electricity has become one of the indispensable energy sources in modern times, and power transmission has also become more and more important, and the transformer, as one of the most important devices in power transmission, often needs to be disconnected and reclosed due to faults, maintenance and other reasons, which triggers serious excitation inrush current. In this paper, for the generation of transformer excitation inrush current, puts forward a kind of excitation inrush current suppression method, which adopts no delay dq algorithm to calculate the three-phase voltage, according to the depth of the voltage drop to determine the integration time, and then calculate the size of the remanent magnetism in order to control the angle of the transformer closing, and ultimately achieve the control of the excitation inrush current generation.

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Transformer Excitation Inrush Suppression Based on Delay-Free d-q Algorithm

  • 会议论文

  • 发表日期：

    2025年

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  • Guangbing Guan,
  • Chuang Wang,
  • Kailin Li,
  • Nian Lv,
  • Gengbin Zhang,
  • Xiaobo Meng,
  • Hongwei Mei

摘要

Electricity has become one of the indispensable energy sources in modern times, and power transmission has also become more and more important, and the transformer, as one of the most important devices in power transmission, often needs to be disconnected and reclosed due to faults, maintenance and other reasons, which triggers serious excitation inrush current. In this paper, for the generation of transformer excitation inrush current, puts forward a kind of excitation inrush current suppression method, which adopts no delay dq algorithm to calculate the three-phase voltage, according to the depth of the voltage drop to determine the integration time, and then calculate the size of the remanent magnetism in order to control the angle of the transformer closing, and ultimately achieve the control of the excitation inrush current generation.