Simulation of Secondary Equipment Lightning Protection in EHV Substation Based on ATP

Hong Bo Li; Lin Niu; Nan Nan Gao; Jie Zhan; Pei Li; Ying Pei; Guang Lei Li; Liang Feng Guo

doi:10.4028/www.scientific.net/AMM.543-547.514

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 543-547Simulation of Secondary Equipment Lightning...

Simulation of Secondary Equipment Lightning Protection in EHV Substation Based on ATP

Abstract:

By analyzing the two lightning accidents happening to a 500kV substation situated in the lightning-prone northeastern Guangdong Province, I conclude as follows, there should be some problem in the equipotential earthing of the secondary system of this substation. Specifically, the existing potential difference in the secondary equipment gave rise to the meltdown of it which finally caused the accident. In the context,I build the one-point earthing parallel system simulation model according to ATP graphic pretreatment program, then by using slope-ramp simulation I study the lightning current which leaked into the grounding grids of the substation.In conclusion, the application of high frequency signal mixed low frequency signal earth system in the secondary system and the equipotential bonding is key to preventing accidents.

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Periodical:

Applied Mechanics and Materials (Volumes 543-547)

Pages:

514-517

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.543-547.514

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Cite this paper

Online since:

March 2014

Authors:

Hong Bo Li*, Lin Niu, Nan Nan Gao, Jie Zhan, Pei Li, Ying Pei, Guang Lei Li, Liang Feng Guo

Keywords:

ATP, Lightning Current, One-Point Grounding, Secondary Equipment

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* - Corresponding Author

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