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Study on the Correlation between Partial Discharge Energy and SF 6 Decomposition Gas Generation

Author

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  • Yong Sung Cho

    (Advanced Power Apparatus Research Center, Korea Electrotechnology Research Institute (KERI), Changwon 51543, Korea
    Laboratory for Electromagnetic Multiphysics, Kyungpook National University (KNU), Daegu 41566, Korea)

  • Tae Yoon Hong

    (Advanced Power Apparatus Research Center, Korea Electrotechnology Research Institute (KERI), Changwon 51543, Korea)

  • Young Woo Youn

    (Advanced Power Apparatus Research Center, Korea Electrotechnology Research Institute (KERI), Changwon 51543, Korea)

  • Jong Ho Sun

    (Advanced Power Apparatus Research Center, Korea Electrotechnology Research Institute (KERI), Changwon 51543, Korea)

  • Se-Hee Lee

    (Laboratory for Electromagnetic Multiphysics, Kyungpook National University (KNU), Daegu 41566, Korea)

Abstract

In this paper, the amount of SF 6 decomposition gases due to the partial discharge (PD) was studied in the SF 6 gas-insulated transformer. The long-term PD degradation experiment was performed while controlling the discharge magnitude using the surface discharge, and the gas generation amount was measured by using gas chromatography for SO 2 F 2 , SOF 2 , SO 2 , CO, and CF 4 . In addition, to investigate the relationship between the partial discharge energy and the decomposed gas generation amount, partial discharge energy was calculated by a data processing program and converted to the unit of joule per mole. With the finite element method (FEM), the electric field distribution and SF 6 gas decomposition mechanism were explained for the partial discharge energy effect on the gas generation. This study helps understand the relationship between the partial discharge energy and the decomposed gas generation ratio with the experimental results and can be used for the diagnosis of PD and maintenance process for the gas-insulated transformers.

Suggested Citation

  • Yong Sung Cho & Tae Yoon Hong & Young Woo Youn & Jong Ho Sun & Se-Hee Lee, 2020. "Study on the Correlation between Partial Discharge Energy and SF 6 Decomposition Gas Generation," Energies, MDPI, vol. 13(18), pages 1-10, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:18:p:4655-:d:410211
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    References listed on IDEAS

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    1. Ju Tang & Xu Yang & Gaoxiang Ye & Qiang Yao & Yulong Miao & Fuping Zeng, 2017. "Decomposition Characteristics of SF 6 and Partial Discharge Recognition under Negative DC Conditions," Energies, MDPI, vol. 10(4), pages 1-16, April.
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