Analysis of the Influence of Soil Electrical Parameters Frequency-dependence Characteristics on the Effective Length of the Grounding Electrode
[1]Li Jingli,He Pengwei,Qiu Zaisen,et al.Analysis of the Influence of Soil Electrical Parameters Frequency-dependence Characteristics on the Effective Length of the Grounding Electrode[J].Journal of Zhengzhou University (Engineering Science),2017,38(04):29-34.[doi:10.13705/j.issn.1671-6833.2017.01.016]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38卷
Number of periods:
2017 04
Page number:
29-34
Column:
Public date:
2017-07-18
- Title:
- Analysis of the Influence of Soil Electrical Parameters Frequency-dependence Characteristics on the Effective Length of the Grounding Electrode
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2017.01.016
- Abstract:
- Impulse charactersitic of grounding devices was the important factor of lightning withstand level and lightning trip-out rate of transmission line.Based on HIFREQ program and FFTSES program in grounding power system analysis software CDEGS,this paper presented a grounding system impulse characteristic modeling considered soil frequency-dependence,especially,the Visacro-Alipio soil frequency-dependence formula has been introduced.The impact of the soil frequency-dependence on the effective length of the grounding device in different initial soil resistivity and different impulse current waveform was analyzed.The calculating results showed that when considering soil frequency-dependence,the impulse effective length would be shorter,especially for the grounding devices buried in high resistivity soil.
- References:
- -
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