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Real-Time Transient Thermal Rating and the Calculation of Risk Level of Transmission Lines

Author

Listed:
  • Jiapeng Liu

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

  • Hao Yang

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

  • Shengjie Yu

    (Department of Urology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China)

  • Sen Wang

    (State Grid Shanxi Electric Power Corporation Research Institute, Xi’an 710054, China)

  • Yu Shang

    (State Grid Shanxi Electric Power Corporation Research Institute, Xi’an 710054, China)

  • Fan Yang

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

Abstract

With the increasing consumption of electric energy, how to improve the capacity of transmission lines within safe margins is an urgent problem to be solved. This paper presents a transient thermal rating method under real-time meteorological conditions. The result of thermal ratings under different conditions shows that this rating approach can significantly increase the capacity of the line. As some of the most critical variables are remaining time and initial temperature, their influence upon the rating is studied. The method of statistical analysis is used to determine the ampacity at different risk levels. The result indicates that with smaller remaining time, the ampacities are larger, and with larger ampacities, the risk of thermal overload is greater. The choice of risk level would heavily affect the values of ampacity.

Suggested Citation

  • Jiapeng Liu & Hao Yang & Shengjie Yu & Sen Wang & Yu Shang & Fan Yang, 2018. "Real-Time Transient Thermal Rating and the Calculation of Risk Level of Transmission Lines," Energies, MDPI, vol. 11(5), pages 1-14, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1233-:d:145974
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    References listed on IDEAS

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    1. Alberto Arroyo & Pablo Castro & Raquel Martinez & Mario Manana & Alfredo Madrazo & Ramón Lecuna & Antonio Gonzalez, 2015. "Comparison between IEEE and CIGRE Thermal Behaviour Standards and Measured Temperature on a 132-kV Overhead Power Line," Energies, MDPI, vol. 8(12), pages 1-12, December.
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    Cited by:

    1. Jiazheng Lu & Yu Liu & Guoyong Zhang & Bo Li & Lifu He & Jing Luo, 2018. "Partition dynamic threshold monitoring technology of wildfires near overhead transmission lines by satellite," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 94(3), pages 1327-1340, December.
    2. Mirza Sarajlić & Jože Pihler & Nermin Sarajlić & Gorazd Štumberger, 2018. "Identification of the Heat Equation Parameters for Estimation of a Bare Overhead Conductor’s Temperature by the Differential Evolution Algorithm," Energies, MDPI, vol. 11(8), pages 1-17, August.

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