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25 September 2023 Study on influence of lightning arrester configuration on VFTO in 420kv GIS substation overvoltage in 420kv GIS substation transformation project
Ruming Feng, Chuanqiang Che, Zhikai Zhai, Qian Xu, Lei Zhao, Jie Bai, Taowei Liu, Zheng Kou, Jiali Chong
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Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 127882M (2023) https://doi.org/10.1117/12.3005305
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia
Abstract
Lightning impulse overvoltage is the main factor to determine the insulation level of substation, and the insulation coordination between the insulation level of the protected electrical equipment and the arrester of the protection device is the most basic and important insulation coordination in the power system. In this paper, the working principle, characteristics and lightning current simulation of zinc oxide arrester are described. Then, taking a 420kV gis substation as an object, an electromagnetic transient simulation platform is built by using electromagnetic transient program (EMTP-ATP), which is used to simulate 420kV When the 400 kV side of GIS Substation is struck out of the line tower by lightning, the insulator flashover occurs, and then it invades the substation along the transmission line to generate Lightning Overvoltage on the equipment. Considering the operation mode of single line single bus single transformer with the most serious overvoltage, the overvoltage waveform of the voltage transformer at the outlet end and the main transformer port of the 420kV GIS Substation is obtained under the given arrester configuration scheme. Through calculation and analysis, the design meets the requirements of specifications and engineering practice.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Ruming Feng, Chuanqiang Che, Zhikai Zhai, Qian Xu, Lei Zhao, Jie Bai, Taowei Liu, Zheng Kou, and Jiali Chong "Study on influence of lightning arrester configuration on VFTO in 420kv GIS substation overvoltage in 420kv GIS substation transformation project", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 127882M (25 September 2023); https://doi.org/10.1117/12.3005305
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KEYWORDS
Lightning
Transformers
Geographic information systems
Dielectrics
Capacitance
Zinc oxide
Data modeling
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