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논문 기본 정보

자료유형
학술저널
저자정보
Shuai Yang (Hubei University of Technology) Jiarui Huang (China Electric Power Research Institute) Shaodong Wei (Wuhan University) Wenjun Zhou (Wuhan University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.5
발행연도
2018.9
수록면
2,050 - 2,058 (9page)

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초록· 키워드

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Impulse characteristic of transmission tower grounding grid is needed for lightning protection of transmission line. This paper describes an outdoor experimental test facility established for large-scale grounding grid of transmission tower, made up of four impulse current generators and a circle current return electrode. The amplitude of impulse current is up to 100 kA. The results of the CDEGS simulation and GPR measurement reveal the uniform current distribution in the test arrangement. An impulse test for a square electrode with extended conductors is carried out in condition of three current waveforms with different amplitude. Based on the electrical network model and iterative algorithm method, a calculation model is proposed to simulate the impulse characteristic of large-scale grounding grid considering soil ionization. The curve of impulse resistance against the current amplitude shows the soil ionization both from the simulation and test. Deviation between the simulation and test result is less than 15%.

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Abstract
1. Introduction
2. Test Facility for Large-scale Grounding Grid
3. Simulation for Large-scale Grounding Grid
4. Comparison between Test and Simulation
5. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-560-003325539