Multiphysics simulation and shed structure optimization of catenary icing insulator

• Autorzy: Wang Sihua , Wang Junjun , Zhou Lijun , Chen Long , Zhao Lei

Identyfikatory

DOI

10.24425/aee.2021.137581

• Języki publikacji: EN

Abstrakty

EN

It is not easy to make the insulators of the railway catenary for the dry and cold environment of the icy Qinghai-Tibet plateau, without causing serious ice-related flashover accidents. To study the operating status of catenary icing insulators, a two-dimensional icing model of catenary cantilever insulators was established based on the winter environmental characteristics of the Golmud station on the Qinghai-Tibet Railway. Compared different directions of ice growth, the spatial electric field distribution, and surface temperature distribution characteristics of icing insulators were analyzed by multi-physical field coupling simulation. The results show that as the thickness of the ice layer increases and the length of the icicle increases, the field intensity of the insulator gradually increases, and the surface temperature continues to rise. When the ice edge grows vertically downward, the electric field intensity of the insulator is the smallest, and the electric field intensity is the largest when the ice edge grows horizontally. Although the surface temperature of the insulator will rise with the increase of icing degree, it is lower than the freezing point and will not have a great impact on insulation performance. Secondly, when the cantilever insulator is arranged obliquely, the increase in the inclination angle will cause the electric field to increase and the temperature to rise slightly, so the inclination angle of the oblique cantilever should be reduced as much as possible during installation. Finally, the insulator with better insulation performance is obtained by optimizing the structure of the flat cantilever insulator.

Słowa kluczowe

EN

electrostatic field; finite element simulation; temperature field; cantilever icing insulator; multiphysical field coupling

PL

pole elektrostatyczne; symulacja elementów skończonych; pole temperatury; wspornikowy izolator do oblodzenia; sprzężenie pola wielofizycznego

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2021
• Tom: Vol. 70, nr 3
• Strony: 675--688
• Opis fizyczny: Bibliogr. 19 poz., rys., tab., wz.

Twórcy

autor

Wang Sihua

• Lanzhou Jiaotong University, China

• https://orcid.org/0000-0003-4419-2780

autor

Wang Junjun

• Lanzhou Jiaotong University, China

autor

Zhou Lijun

• Lanzhou Jiaotong University, China

autor

Chen Long

• Lanzhou Jiaotong University, China

autor

Zhao Lei

• Lanzhou Jiaotong University, China

Bibliografia

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• [3] Tavakoli C., Farzaneh M., Fofana I. et al., Dynamics and Modeling of AC Arc on Surface of Ice, IEEE Transactions on Dielectrics and Electrical Insulation, vol. 13, no. 06, pp. 1278–1283 (2006).
• [4] Zhao Jiayao, Study on AC Flashover Characteristics of Nature Icing Suspension Insulator (Short) Strings, PhD Thesis, Chongqing University, Chongqing (2019).
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• [16] Liao Jiajun, Yang Lin, Hao Yanpeng, Simulation of Electric Field for 110 kV Iced Composite Insulator in Melting Period, High Voltage Apparatus, vol. 51, no. 03, pp. 47–54 (2015), DOI: 10.13296/ j.l001-1609.hva.2015.03.008.
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• [19] An Dawei, Study on Needle-plate corona Discharge and Migration Characteristics of Ion Space Charge, PhD Thesis, Chongqing University, Chongqing (2017).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).