Rime icing on bundled conductors

He, Qiang; Zhang, Jian; Mengyan, Deng; Du, Dongping; Makkonen, Lasse; Tiihonen, Mikko

doi:10.1016/j.coldregions.2018.08.027

Cited by 16 publications

(16 citation statements)

References 11 publications

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“…Recently, Qing et al (2018) have performed a similar analysis of the rime ice accretion on bundled conductors, focusing primarily on the effect of the distance and separation angle on the rime ice accretion. However, the presentation of the results of their analysis leaves a few open questions.…”

Section: Previous Studiesmentioning

confidence: 99%

“…For the discrete phase, Qing et al present the mass and momentum conservation equations matching that of the FENSAP-ICE. Cross-referencing with the Fluent Theory Guide (ANSYS, 2017) shows that the discrete phase governing equations in the Fluent are different from the equations in the FENSAP-ICE/Qing et al The usage of FENSAP-ICE is not mentioned in the source article (Qing et al, 2018). The authors specify that "Numerical simulations were done by Fluent and MATLAB.…”

Section: Previous Studiesmentioning

confidence: 99%

“…Such geometric configurations are of significant importance in the modeling of atmospheric icing on the overhead transmission lines, as the majority of high-voltage transmission networks consist of bundled conductors. However, to the best of authors' knowledge only limited amount of work has been done in modeling of atmospheric ice accretion on bundled cylinders and/or conductors, those primarily being the works of Wagner (2010) and Qing et al (2018). Thus, there is a need to better understand such types of ice accretion and droplet impingement, although, it is not certain how or if ISO 12494 can handle the modeling of the atmospheric ice accretion on bundled conductors, nor how one could easily validate the obtained results.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Study of Dry Ice Growth on Duplex Cylinders

Sokolov

Virk

2023

MultScienTechn

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A study of dry ice growth on the bundled (duplex) cylinders has been performed using icing wind tunnel experiments and Computational Fluid Dynamics (CFD) numerical simulations. The aim of this study is to "fill the gaps" in the works of (Wagner, 2010) and (Qing et al., 2018). The numerical simulations cover a range of possible icing conditions by varying the operating wind speed, median volume diameter, and for some cases -the angle of incidence between the cylinders. The obtained results for the 0° AoA show that the accreted ice masses ratio between the leeward and windward cylinder varies from ~100% to ~30%. The accreted ice masses ratio decreases with the increase in the wind speed and/or median volume diameter. For the cases with non-zero AoA, the accreted ice masses become approximately equal, when the AoA is large enough to produce a vertical separation equal or greater to one cylinder diameter.

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Section: Previous Studiesmentioning

confidence: 99%

Section: Previous Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

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Study of Dry Ice Growth on Duplex Cylinders

Sokolov

Virk

2023

MultScienTechn

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“…China is one of the countries with a high incidence of power grid ice accidents. Since the first transmission line ice accident was recorded in 1954, there have been thousands of ice accidents [1][2][3]. In 2008, a large area of freezing rain disaster occurred in southern China, which affected 570 counties in 14 provinces [4][5][6], resulting in 129 deaths, 1.66 million emergency transfers, and an economic loss as high as 151.65 billion yuan [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Influence of torsion on icing process of transmission lines

Han

Sun

Xing

et al. 2022

IET Generation Trans & Dist

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Icing threatens the safe and stable operation of transmission lines. Accurate prediction of the icing process of conductor can help the work of anti‐icing and disaster reduction of transmission lines. Generally, the icing of conductor is accompanied by the torsion process of conductor. Because of the interaction of conductor torsion and icing, there is a big difference of the icing shape and rate between different positions on a transmission line. In order to improve the accuracy of numerical calculation of conductor icing, a dynamic numerical calculation model of conductor icing torsion is established based on hydrodynamics and basic mechanics in this paper. Comprehensively, the model takes the effects of torsion angle and torsion icing shape on the icing process into consideration, including the effects on airflow filed and trajectories of water droplets in the air. Through the simulation, the change law of the torsion angle at different positions of the conductor, the influence characteristics of the conductor torsion on the icing process, and the differences of the icing torsion of conductor under different environmental parameters are analysed. The results show that, compared with the condition without torsion, the collision range of water droplets on the conductor is larger under the torsion condition, the average value of collision efficiency β1 is higher, and the icing rate is faster. The larger the wind velocity and the median volume diameter of water droplets in the air, the faster the conductor icing torsion development.

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