Electric field characteristics analysis of electrified railway catenary section insulator

Yuantao Liu; Shanpeng Zhao; Youpeng Zhang; Yanzhe Li; Sihua Wang

doi:10.1117/12.2657913

22 December 2022 Electric field characteristics analysis of electrified railway catenary section insulator

Yuantao Liu, Shanpeng Zhao, Youpeng Zhang, Yanzhe Li, Sihua Wang

Proceedings Volume 12460, International Conference on Smart Transportation and City Engineering (STCE 2022); 1246034 (2022) https://doi.org/10.1117/12.2657913
Event: International Conference on Smart Transportation and City Engineering (STCE 2022), 2022, Chongqing, China

Abstract

In order to reveal the electric field characteristics of the catenary section insulators under normal operating conditions. Based on the FEM of the electrostatic field, a simulation model for the numerical calculation of the electric field of a single insulator and an integral catenary section insulator under normal operating conditions is established. The model uses artificial truncation method to limit the air domain, setting and defining the various parameters reasonably. The results show that the overall trend of the surface potential of a single insulator and an overall section insulator is determined by the setting of the potential, and the potential rises from the low-voltage end to the high-voltage end, and vice versa. The electric field distribution is generally U-shaped. Compared with a single insulator, the electric field of an integral section insulator decreases at the high-voltage end of the insulator, rises at the low-voltage end, and changes in other parts are not obvious. When the potentials of the fittings at both ends of the integral catenary section insulator are different, the number of fittings and the model structure have a greater influence on the distribution of potential. Derived from the electric field diagram that the maximum electric field intensity of a single insulator and an integral catenary section insulator are less than the electric intensity peak of air in a uniform electric field. There will be no corona on the surface of the insulator, which meets the requirements of insulation performance. The analysis results provide theoretical basis and reference for the design, modification and comparison of insulation characteristics of section insulation.

Citation Download Citation

Yuantao Liu, Shanpeng Zhao, Youpeng Zhang, Yanzhe Li, and Sihua Wang "Electric field characteristics analysis of electrified railway catenary section insulator", Proc. SPIE 12460, International Conference on Smart Transportation and City Engineering (STCE 2022), 1246034 (22 December 2022); https://doi.org/10.1117/12.2657913

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KEYWORDS

Dielectrics

Finite element methods

3D modeling

Chemical elements

Interfaces

Visualization

Differential equations

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