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Studies on a Thermal Fault Simulation Device and the Pyrolysis Process of Insulating Oil

Author

Listed:
  • Lin Du

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Yubo Wang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Wujing Wang

    (State Grid Zhejiang Co., Ltd. Shaoxing Power Supply Company, Shaoxing 312099, China)

  • Xiangxiang Chen

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

Abstract

In order to analyze the composition of pyrolysis products of insulating oil at different thermal fault levels, this paper proposes a thermal fault simulator device for oil-filled equipment. This device simulates different thermal fault levels by changing the heat source temperature, provides the real pressure environment by using a closed container and analyzes the composition of the insulation products by chromatographic analysis methods. By analyzing the temperature and velocity of flow distributions, it is proved that the fault simulator results are consistent with the actual results. The influence of heat source energy on the pyrolysis reaction of insulating oil is also discussed. The obtained results show that the correlation coefficient between pyrolysis product and heat source energy reaches 0.978. As a result, a multivariate nonlinear energy calculation model is presented to establish the relationship between the complete reaction process and energy. By calculating the energy absorbed by different products during the reaction, it can be found that the decomposition of alkanes absorbs a large amount of energy at the initial stage of pyrolysis, which corresponds to low temperature overheating fault. When the pyrolysis reaction continues, dehydrogenation occupies the leading role, which corresponds to high temperature overheating fault. This can be used as an effective basis for distinguishing fault levels according to the corresponding relationship between energy and fault level.

Suggested Citation

  • Lin Du & Yubo Wang & Wujing Wang & Xiangxiang Chen, 2018. "Studies on a Thermal Fault Simulation Device and the Pyrolysis Process of Insulating Oil," Energies, MDPI, vol. 11(12), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3392-:d:187656
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    References listed on IDEAS

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    1. Xu, Hao & Cheng, Shuo & Hungwe, Douglas & Yoshikawa, Kunio & Takahashi, Fumitake, 2022. "Co-pyrolysis coupled with torrefaction enhances hydrocarbons production from rice straw and oil sludge: The effect of torrefaction on co-pyrolysis synergistic behaviors," Applied Energy, Elsevier, vol. 327(C).

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