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Influence of Arc Size on the Ignition and Flame Propagation of Cable Fire

Author

Listed:
  • Chenying Li

    (Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Jie Chen

    (Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Wei Zhang

    (Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Libing Hu

    (Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Jingying Cao

    (Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Jianjun Liu

    (Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)

  • Zhenyu Zhu

    (College of Automation Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China)

  • Shuqun Wu

    (College of Automation Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China)

Abstract

Cable fire caused by arc faults is one of the essential factors threatening the safe operation of a power system. The ignition and flame propagation of cable fire dependent on the characteristics of the arc discharge is lackingin in-depth understanding at present. In this work, with the constant electric power deposited into the arc discharge, the effects of arc size on the ignition and flame propagation of 110 kV XLPE cable fire are investigated for the first time. The arc size is changed by varying the gap distance of electrodes from 1.5 cm to 2.5 cm. It is interesting to find that the larger the arc size is, the faster the cable fire is ignited and propagates, and the larger the damaged area of the sheath of the cable is. Therein, when the gap distance increases from 1.3 cm to 3.1 cm, the equivalent impedance and the length of the arc discharge increase nearly seven times and three times, respectively. However, the gas temperature of the arc decreases slightly from 2280 K to 2100 K. In addition, a 3D model of the cable fire ignited by arc discharge is computed by Pyrosim software with fire dynamic simulation (FDS) module. Simulated results show that as the arc size increases, the cable fire is ignited faster, the flame propagates both vertically and horizontally increasing significantly, which is agreed well with the experimental results. This study deepens the understanding of the cable fire ignited by arc discharge and therefore it is useful for the evaluation and prevention of cable fire.

Suggested Citation

  • Chenying Li & Jie Chen & Wei Zhang & Libing Hu & Jingying Cao & Jianjun Liu & Zhenyu Zhu & Shuqun Wu, 2021. "Influence of Arc Size on the Ignition and Flame Propagation of Cable Fire," Energies, MDPI, vol. 14(18), pages 1-14, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5675-:d:632220
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    References listed on IDEAS

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    1. Karol Nowak & Jerzy Janiszewski & Grzegorz Dombek, 2021. "The Possibilities to Reduce Arc Flash Exposure with Arc Fault Eliminators," Energies, MDPI, vol. 14(7), pages 1-25, March.
    2. Jinsong Li & Hua Yu & Min Jiang & Hong Liu & Guanliang Li, 2019. "Numerical Modeling of Space–Time Characteristics of Plasma Initialization in a Secondary Arc," Energies, MDPI, vol. 12(11), pages 1-16, June.
    3. Lina Wang & Hongcheng Qiu & Pu Yang & Longhua Mu, 2021. "Arc Fault Detection Algorithm Based on Variational Mode Decomposition and Improved Multi-Scale Fuzzy Entropy," Energies, MDPI, vol. 14(14), pages 1-16, July.
    4. Teng Li & Zhijie Jiao & Lina Wang & Yong Mu, 2020. "A Method of DC Arc Detection in All-Electric Aircraft," Energies, MDPI, vol. 13(16), pages 1-14, August.
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    Cited by:

    1. Hao Zhang & Jinxia Yao & Hui Zhu & Xiaolong Wang, 2022. "Study on Combustion Characteristics of Cable Based on Cone Calorimeter," Energies, MDPI, vol. 15(5), pages 1-13, March.

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