The Influence of Seasonal Soil Moisture on the Design of Grounding Systems

被引：0
|
作者：
Coelho, Vilson Luiz [1 ]
Piantini, Alexandre [3 ]
Altafim, Ruy A. C. [5 ]
Almaguer, Hugo A. D. [2 ]
Coelho, Rafael A. [2 ]
de Lima, Milvio R. [4 ]
Boaventura, Wallace do C. [6 ]
Paulino, Jose Osvaldo S. [6 ]
Nosaki, Plinio Luiz [7 ]
机构：
[1] FASATC, Fac SATC, Criciuma, Brazil
[2] Univ Reg Blumenau, Blumenau, Brazil
[3] Univ Sao Paulo, IEE, BR-05508 Sao Paulo, Brazil
[4] Power Engn Ltda, Florianopolis, SC, Brazil
[5] Univ Sao Paulo, EESC USP, Sao Carlos, SP, Brazil
[6] Univ Fed Minas Gerais, Belo Horizonte, MG, Brazil
[7] RGE, Caxias Do Sul, Brazil
来源：
2013 INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (XII SIPDA) | 2013年
关键词：
grounding; ground resistance; soil moisture; soil resistivity; WIRES;
D O I：
暂无
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：
This paper discusses the influence of the moisture content on the seasonal behavior of soil resistivity and on the ground resistance of protection systems. Laboratory tests show that this influence is very large on the resistivity of several types of soil, although field researches indicate a wide variation in the resistivity and moisture content only in the topmost layers of the soil. However, this variation may significantly change the ground resistance values of systems with small dimensions, thus compromising the performance of protection systems of electrical installations. The strong correlation between the soil moisture, and consequently the soil resistivity, and monthly rainfall values allows extrapolating resistivity measurements for the most critical conditions and thus improving the design of grounding systems.
引用
收藏
页码：201 / 208
页数：8
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