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Electric field intensity minimization in three-phase gas-insulated busduct with metal inserts under delamination

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Abstract

Irrespective of the state of the environment, the power system network must be maintained uninterrupted. Many manufacturing and switching problems, including delamination, protrusion, depression, and gaps, have been linked to spacer failures of gas-insulated bus ducts (GIBs). These flaws have a major negative effect on the insulator’s surface, which de-energizes the gas-insulated bus duct device and causes a large financial loss. This paper investigates the electric field stress at the triple junction for a three-phase GIB with a delamination defect using a functionally graded material (FGM) spacer. Metal inserts (MIs) are added to the end of the enclosure to reduce stress. By do** them with different permittivity values, functionally graded materials are spatially distributed with a variety of filler materials to achieve homogeneous electric field stress. With a spacer made for different voltages and FGM gradings, the simulation is carried out. The grading’s impact on field stress is identified and further diminished with the introduction of the MI to the FGM insulator. The simulated results are discussed and analysed to demonstrate the viability of the proposed insulator.

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Authors and Affiliations

  1. Department of EEE, D A Government Polytechnic Ongole, Ongole, Andhra Pradesh, India

    Katta V. Subrahmanyam

  2. Vignan’s Foundation for Science, Technology and Research (VFSTR), Vadlamudi, Guntur, A.P., India

    K. Mercy Rosalina

Authors
  1. Katta V. Subrahmanyam
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  2. K. Mercy Rosalina
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Contributions

Author Katta V. Subrahmanyam: Conceptualization, methodology/study design, validation, formal analysis, investigation, resources, data curation, writing — original draft, visualization, formal analysis, writing — review and editing.

Author Dr. K. Mercy Rosalina: Formal analysis, software, resources, writing — review and editing, supervision, project administration.

Corresponding author

Correspondence to Katta V. Subrahmanyam.

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Subrahmanyam, K.V., Rosalina, K.M. Electric field intensity minimization in three-phase gas-insulated busduct with metal inserts under delamination. Int J Adv Manuf Technol (2023). https://doi.org/10.1007/s00170-023-12867-z

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