Study on Lightning Induced Voltages in Transmission Lines Under Soil Conductivity Stratified Structures

GAO Jinge; LI Jingxiao

doi:10.21656/1000-0887.390093

Volume 40 Issue 8

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GAO Jinge, LI Jingxiao. Study on Lightning Induced Voltages in Transmission Lines Under Soil Conductivity Stratified Structures[J]. Applied Mathematics and Mechanics, 2019, 40(8): 917-925. doi: 10.21656/1000-0887.390093

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Study on Lightning Induced Voltages in Transmission Lines Under Soil Conductivity Stratified Structures

doi: 10.21656/1000-0887.390093

GAO Jinge^1,2,
LI Jingxiao¹

¹Beijing Meteorological Disaster Prevention Center, Beijing 100089, P.R.China;²Beijing Urban Meteorological Research Institute, Beijing 100089, P.R.China

Received Date: 2018-03-27
Rev Recd Date: 2018-12-18
Publish Date: 2019-08-01

Abstract

Abstract

To solve the contradiction between the ideal hypothesis and the real situation in solution of the lightning induced voltage model, the Rusck model was improved through replacement of the actual line height with the equivalent line height. This method enables fast solution of lightning induced voltages in transmission lines under soil conductivity stratified structures. The effectiveness and superiority of the improved Rusck model were verified through comparison with the FDTD results. The simulation results show that, for a single soil layer with a conductivity less than 0.1 S/m, the influence of the conductivity should be considered in solution of the induced voltage, and the peak voltage will increase with the decrease of the conductivity. For a stratified structure, the induced voltage will increase with the thickening of the upper soil layer with a less conductivity; on the contrary, the induced voltage will decrease with the thickening of the upper layer, and the effects of soil stratification can be ignored for the case of an upper soil layer with a thickness exceeding 5 m.
- soil conductivity,
- stratified structure,
- Rusck model,
- lightning induced voltage

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References(24)

References

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