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With the rapid expansion of India’s power sector and the surge in demand, projections from the Power Grid Corporation of India indicate an expected installed capacity of 600,000 MW by 2025. Various nations are adopting Ultra High Voltage (UHV) transmission systems, spanning from 765 to 1100 kV AC transmission, to enhance transmission capacity. Among the vital components of this system, high voltage insulators play a pivotal role. To mitigate the failure of insulators due to E-field issues, grading devices like corona rings and grading rings are strategically placed in high E-field regions. This study focuses on designing field control devices for a 1200 kV UHV tension insulator. Electric field analysis is performed using Finite Element Method software and nature-inspired algorithms namely MOPSO and MODA are used to find the optimum values of the field control devices. The Computation time and rate of convergence iteration between the two algorithms are compared. It is concluded that MODA takes only less time for total computation compared to MOPSO and it converges earlier at 97th iteration, whereas MOPSO converges at 184th iteration. After optimization of the dimensions of the field grading devices, the electric field has considerably reduced below the threshold value.

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Analysis of 1200 kV UHV Tension Insulator Using Finite Element Method and Bio-Inspired Algorithm

  • 会议论文

  • 发表日期：

    2025年

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  • Archana Chandrasekaran,
  • Usha kothandaraman

摘要

With the rapid expansion of India’s power sector and the surge in demand, projections from the Power Grid Corporation of India indicate an expected installed capacity of 600,000 MW by 2025. Various nations are adopting Ultra High Voltage (UHV) transmission systems, spanning from 765 to 1100 kV AC transmission, to enhance transmission capacity. Among the vital components of this system, high voltage insulators play a pivotal role. To mitigate the failure of insulators due to E-field issues, grading devices like corona rings and grading rings are strategically placed in high E-field regions. This study focuses on designing field control devices for a 1200 kV UHV tension insulator. Electric field analysis is performed using Finite Element Method software and nature-inspired algorithms namely MOPSO and MODA are used to find the optimum values of the field control devices. The Computation time and rate of convergence iteration between the two algorithms are compared. It is concluded that MODA takes only less time for total computation compared to MOPSO and it converges earlier at 97th iteration, whereas MOPSO converges at 184th iteration. After optimization of the dimensions of the field grading devices, the electric field has considerably reduced below the threshold value.