中国物理B ›› 2024, Vol. 33 ›› Issue (1): 14101-14101.doi: 10.1088/1674-1056/ad0140

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Electric field and force characteristic of dust aerosol particles on the surface of high-voltage transmission line

Yingge Liu(刘滢格)1, Xingcai Li(李兴财)1,†, Juan Wang(王娟)1,2, Xin Ma(马鑫)3, and Wenhai Sun(孙文海)1   

  1. 1 School of Physics, Ningxia University, Yinchuan 750021, China;
    2 Xinhua College of Ningxia University, Yinchuan 750021, China;
    3 School of Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China
  • 收稿日期:2023-06-22 修回日期:2023-09-17 接受日期:2023-10-09 出版日期:2023-12-13 发布日期:2024-01-03
  • 通讯作者: Xingcai Li E-mail:nxulixc2011@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 12064034), the Leading Talents Program of Science and Technology Innovation in Ningxia Hui Autonomous Region, China (Grant No. 2020GKLRLX08), the Natural Science Foundation of Ningxia Hui Auatonomous Region, China (Grant Nos. 2022AAC03643, 2022AAC03117, and 2018AAC03029), the Major Science and Technology Project of Ningxia Hui Autonomous Region, China (Grant No. 2022BDE03006), and the Natural Science Project of the Higher Education Institutions of Ningxia Hui Autonomous Region, China (Grant No. 13-1069).

Electric field and force characteristic of dust aerosol particles on the surface of high-voltage transmission line

Yingge Liu(刘滢格)1, Xingcai Li(李兴财)1,†, Juan Wang(王娟)1,2, Xin Ma(马鑫)3, and Wenhai Sun(孙文海)1   

  1. 1 School of Physics, Ningxia University, Yinchuan 750021, China;
    2 Xinhua College of Ningxia University, Yinchuan 750021, China;
    3 School of Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China
  • Received:2023-06-22 Revised:2023-09-17 Accepted:2023-10-09 Online:2023-12-13 Published:2024-01-03
  • Contact: Xingcai Li E-mail:nxulixc2011@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 12064034), the Leading Talents Program of Science and Technology Innovation in Ningxia Hui Autonomous Region, China (Grant No. 2020GKLRLX08), the Natural Science Foundation of Ningxia Hui Auatonomous Region, China (Grant Nos. 2022AAC03643, 2022AAC03117, and 2018AAC03029), the Major Science and Technology Project of Ningxia Hui Autonomous Region, China (Grant No. 2022BDE03006), and the Natural Science Project of the Higher Education Institutions of Ningxia Hui Autonomous Region, China (Grant No. 13-1069).

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摘要： High-voltage transmission lines play a crucial role in facilitating the utilization of renewable energy in regions prone to desertification. The accumulation of atmospheric particles on the surface of these lines can significantly impact corona discharge and wind-induced conductor displacement. Accurately quantifying the force exerted by particles adhering to conductor surfaces is essential for evaluating fouling conditions and making informed decisions. Therefore, this study investigates the changes in electric field intensity along branched conductors caused by various fouling layers and their resulting influence on the adhesion of dust particles. The findings indicate that as individual particle size increases, the field strength at the top of the particle gradually decreases and eventually stabilizes at approximately 49.22 kV/cm, which corresponds to a field strength approximately 1.96 times higher than that of an unpolluted transmission line. Furthermore, when particle spacing exceeds 15 times the particle size, the field strength around the transmission line gradually decreases and approaches the level observed on non-adhering surface. The electric field remains relatively stable. In a triangular arrangement of three particles, the maximum field strength at the tip of the fouling layer is approximately 1.44 times higher than that of double particles and 1.5 times higher compared to single particles. These results suggest that particles adhering to the transmission line have a greater affinity for adsorbing charged particles. Additionally, relevant numerical calculations demonstrate that in dry environments, the primary adhesion forces between particles and transmission lines follow an order of electrostatic force and van der Waals force. Specifically, at the minimum field strength, these forces are approximately 74.73 times and 19.43 times stronger than the gravitational force acting on the particles.

关键词: high-voltage current, electric field, aerosol particles, force characteristic

Abstract: High-voltage transmission lines play a crucial role in facilitating the utilization of renewable energy in regions prone to desertification. The accumulation of atmospheric particles on the surface of these lines can significantly impact corona discharge and wind-induced conductor displacement. Accurately quantifying the force exerted by particles adhering to conductor surfaces is essential for evaluating fouling conditions and making informed decisions. Therefore, this study investigates the changes in electric field intensity along branched conductors caused by various fouling layers and their resulting influence on the adhesion of dust particles. The findings indicate that as individual particle size increases, the field strength at the top of the particle gradually decreases and eventually stabilizes at approximately 49.22 kV/cm, which corresponds to a field strength approximately 1.96 times higher than that of an unpolluted transmission line. Furthermore, when particle spacing exceeds 15 times the particle size, the field strength around the transmission line gradually decreases and approaches the level observed on non-adhering surface. The electric field remains relatively stable. In a triangular arrangement of three particles, the maximum field strength at the tip of the fouling layer is approximately 1.44 times higher than that of double particles and 1.5 times higher compared to single particles. These results suggest that particles adhering to the transmission line have a greater affinity for adsorbing charged particles. Additionally, relevant numerical calculations demonstrate that in dry environments, the primary adhesion forces between particles and transmission lines follow an order of electrostatic force and van der Waals force. Specifically, at the minimum field strength, these forces are approximately 74.73 times and 19.43 times stronger than the gravitational force acting on the particles.

Key words: high-voltage current, electric field, aerosol particles, force characteristic

中图分类号:  (Electrostatics; Poisson and Laplace equations, boundary-value problems)

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