Research on Measurement Method for DC Bias State of Converter Transformer | Semantic Scholar (2024)

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@article{Liu2024ResearchOM, title={Research on Measurement Method for DC Bias State of Converter Transformer}, author={Hu Liu and Ning Mei and Zhe Wang and Shiya Zhao and Jiefeng Ding and Yunze Li}, journal={2024 7th International Conference on Energy, Electrical and Power Engineering (CEEPE)}, year={2024}, pages={106-110}, url={https://api.semanticscholar.org/CorpusID:271091066}}
  • Hu Liu, Ning Mei, Yunze Li
  • Published in 7th International Conference… 26 April 2024
  • Engineering, Physics
  • 2024 7th International Conference on Energy, Electrical and Power Engineering (CEEPE)

Aiming at the complicated causes of transformer bias in converter stations, this paper improves the technical means for monitoring the DC bias state of converter transformers. First, four different types of magnetic bias can be identified by monitoring the conductor surface magnetic field on the neutral point down conductor of the converter transformer. Secondly, the vibration acceleration data of the transformer is obtained by arranging an acceleration measurement unit on the transformer shell…

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14 References

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Through simulation test, the electromagnetic characteristics and reactive loss characteristics of converter transformer under dc bias can be obtained, and the relationship between the bias current and the reactive loss of <inline-formula><tex-math notation="LaTeX">$\pm$</tex- math></inline- formula>800kV converter transformer is quantified.

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With the coupling of the DC metro network and urban power grid, the DC metro stray currents flowing into transformers have caused serious DC bias. There is, therefore, a need to evaluate transformer

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