A comprehensive analysis of the effect of frequency-dependent soil electrical parameters on the lightning response of wind-turbine grounding systems

被引：25
|
作者：
Alipio, Rafael [1 ]
Conceicao, Daiane [1 ]
De Conti, Alberto [2 ]
Yamamoto, Kazuo [3 ]
Dias, Rosilene N. [1 ]
Visacro, Silverio [2 ]
机构：
[1] CEFET MG Fed Ctr Technol Educ Minas Gerais, DEE, Ave Amazonas 7675, BR-30510000 Belo Horizonte, MG, Brazil
[2] UFMG Fed Univ Minas Gerais, LRC, Ave Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
[3] Chubu Univ, Dept Elect & Elect Engn, 1200 Matsumoto Cho, Kasugai, Aichi 4878501, Japan
来源：
ELECTRIC POWER SYSTEMS RESEARCH | 2019年 / 175卷
关键词：
Wind turbines; Grounding systems; Lightning response; Frequency-dependent soil parameters; IMPULSE EFFICIENCY;
D O I：
10.1016/j.epsr.2019.105927
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The impact of frequency-dependent soil electrical parameters on the lightning response of typical wind turbine grounding systems is investigated. It is shown that the frequency dependence of soil parameters is responsible for decreasing the ground potential rise and, thus, the impulse impedance and impulse coefficient of the grounding systems. This effect is more pronounced for high-resistivity soils and fast current pulses. It is also shown that, considering typical dimensions of actual wind turbine grounding systems and soils with resistivity higher than 300 Omega m, the impulse impedance seen by each single wind turbine is expected to be lower than the low-frequency grounding resistance.
引用
收藏
页数：8
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