Effects of potential difference within large grounding grid on secondary cables due to lightning strike

When substations suffer from lightning, the potential difference occurs within the grounding grid, which will generate induced voltage between the core, shield and the armor of the two-end grounded cables and significantly affect the secondary system in substation. This paper analyses the potential...

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Bibliographic Details
Published in2017 IEEE 5th International Symposium on Electromagnetic Compatibility (EMC-Beijing) pp. 1 - 4
Main Authors Yongchang Meng, Bo Zhang, Sen Wang, Zhizhong Li
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2017
Subjects
Cable insulation
Cable shielding
Electric potential
Grounding
induced voltage
lightning
potential difference
secondary cable
Substations
Voltage measurement
Wires
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Summary:When substations suffer from lightning, the potential difference occurs within the grounding grid, which will generate induced voltage between the core, shield and the armor of the two-end grounded cables and significantly affect the secondary system in substation. This paper analyses the potential difference within large grounding grid and its influence on the secondary cables through the field test. The induced voltage in cable was measured and analyzed. The usage of drain wires was studied.
ISBN:1509051848
9781509051847
DOI:10.1109/EMC-B.2017.8260440