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Study on the Causes and Countermeasures of High Lightning Trip-Out Rate on Electric Transmission Lines

Author

Listed:
  • Jieting Bi

    (Jiangsu Vocational College of Electronics and Information, Huaian 223003, China
    High Voltage Laboratory, Guangxi University, Nanning 530004, China)

  • Jufeng Wang

    (High Voltage Laboratory, Guangxi University, Nanning 530004, China)

Abstract

Trip faults are obviously increased by frequent lightning strikes, and increasing lightning trip-out seriously affects a system’s stability and power supply reliability. In this paper, the reasons for high lightning trip-out rates in electric power transmission lines are analyzed in detail from three perspectives, as follows: the substandard lightning resistance level, lightning complexity at a mid-point between towers, and the complexity of first and subsequent lightning stroke conditions. Experiments and simulations demonstrate that the solid-phase gas arc-extinguishing method has a strong ability to extinguish power–frequency continuous-current arcs and to protect against first and subsequent lightning strokes. Since the time taken by gas arc-extinguishing is much less than the response time of relay protection, trip accidents caused by lightning strikes can be avoided and the trip rates of lightning strikes can be reduced using this method. The case analysis and practical operation results show that the solid-phase gas arc-extinguishing lightning protection method can reduce the lightning trip-out rate by more than 90%, completely solve the problem of high lightning trip-out rates, and significantly improve the reliability of power supply.

Suggested Citation

  • Jieting Bi & Jufeng Wang, 2025. "Study on the Causes and Countermeasures of High Lightning Trip-Out Rate on Electric Transmission Lines," Energies, MDPI, vol. 18(4), pages 1-20, February.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:4:p:857-:d:1589506
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