Abstract
MATLAB software is used to simulate the circulation of the gas insulated metal enclosed transmission lines (GIL) pipe corridor system and the ground potential. The 500 kV GIL grounding system and the shell circulation model are established. The analysis shows that the shell circulation decreases with the increase of the resistance of the ground lead, while the shell potential to the ground increases, and both values tend to be saturated. Under the condition of the same resistance of the ground lead, the shell circulation and potential to the ground increase linearly with the increase of line length and mutual inductance, and the ground lead impedance increases with the increase of line length. Through the simulation analysis of the shell potential to the ground of the long-distance GIL of the single phase, it is obtained that the shell potential to the ground is lowest in the center of the shell and tends to 0, and highest at both ends, showing a “V” shape distribution. When the total length of the line is constant, the more the number of segments of the shell, the lower the shell potential to the ground at both ends. It provides the basis for practical engineering design.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Qi, B., Zhang, G., Li, C., et al.: Research status and prospect of gas-insulated metal enclosed transmission line. High Voltage Eng. 41(05), 1466–1473 (2015). (in Chinese)
Xiaolong, L., Guangkuo, Z., Chen, C., et al.: Effects of volume and surface conductivity on the surface charge and electric field characteristics of the tri-post insulator in SF6-filled ± 500 kV DC-GIL. IET Gener. Transm. Distrib. 17(1), 230–239 (2022)
Chakir, A., Sofiane, Y., Aquelet, N., et al.: Long term test of buried gas insulated transmission lines (GIL). Appl. Therm. Eng. 23(13), 1681–1696 (2003)
Gao, K., Yan, X., Wang, H., et al.: Progress in environment-friendly gas-insulated transmission line (GIL). High Voltage Eng. 44(10), 3105–3113 (2018). (in Chinese)
Wang, T., Wang, X., Wan, F., et al.: Design and application of high voltage AC GIL. High Voltage Apparatus 50(10), 107–111 (2014). (in Chinese)
Piatek, Z.: Self and mutual impedances of a finite length gas-insulated transmission line (GIL). Electr. Power Syst. Res. 77(3), 191–203 (2006)
Zhong, J., Wang, Z., Zhang, B., et al.: Research on steady‐state thermal behavior of SF6/N2 and CF3I/N2 mixtures in high voltage gas‐insulated lines (GIL). IEEJ Trans. Electr. Electron. Eng. 16(4), 511–518 (2021)
Yang, C., Zang, C., Tang, H., et al.: Research on the standards of hand-over acceptance tests of UHV GIL. High Voltage Apparatus 59(05), 75–83 (2023). (in Chinese)
Wang, Q., Ye, J., Ye, J.: Computational analysis and comparison of operating overvoltage between Urban Grid 500 kV cable and gas-insulated metal closed transmission line. Power Energy 42(06), 622–625+653 (2021). (in Chinese)
Wang, F., Lin, X., Xu, J.: Calculation and analysis on circulating current in grounding system of UHV hybrid gas insulated switchgears. Power Syst. Technol. 36(07), 33–37 (2012). (in Chinese)
Tang, L., Cai, W., Wang, Q., et al.: Circulation characteristics and influencing factors of GIL grounding system. High Voltage Eng. 46(06), 2098–2105 (2020). (in Chinese)
Acknowledgments
This work is supported by Shenzhen Power Supply Co., Ltd. (090000KK52210175).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 Beijing Paike Culture Commu. Co., Ltd.
About this paper
Cite this paper
Hao, D., Zheng, Y., Li, G., Tian, Z., Zhou, W. (2024). Study on Circulation and Ground Potential Characteristics of GIL Grounding System. In: Yang, Q., Li, Z., Luo, A. (eds) The Proceedings of the 18th Annual Conference of China Electrotechnical Society. ACCES 2023. Lecture Notes in Electrical Engineering, vol 1168. Springer, Singapore. https://doi.org/10.1007/978-981-97-1068-3_70
Download citation
DOI: https://doi.org/10.1007/978-981-97-1068-3_70
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-97-1067-6
Online ISBN: 978-981-97-1068-3
eBook Packages: EngineeringEngineering (R0)