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IEEE Transactions on Industry Applications, 2015
In cases where the grounding system is buried in soils characterized by poor contact with the electrodes (e.g., karst and sandy terrains), the contact resistance frequently represents a dominant component of the total grounding resistance. In such cases, estimation of the grounding resistance by conventional formulas given in the literature is useless,
Jovan Trifunovic, Miomir Kostic
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In cases where the grounding system is buried in soils characterized by poor contact with the electrodes (e.g., karst and sandy terrains), the contact resistance frequently represents a dominant component of the total grounding resistance. In such cases, estimation of the grounding resistance by conventional formulas given in the literature is useless,
Jovan Trifunovic, Miomir Kostic
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Prediction of Soil Resistivity and Ground Rod Resistance for Deep Ground Electrodes
IEEE Transactions on Power Apparatus and Systems, 1980A technique for the prediction of soil resistivity and ground rod resistance for deep ground electrodes has been developed. The method extrapolates limited test ground rod data to a factor of up to ten times the known depth values. The technique has been shown to accurately predict the effectiveness of installing deep ground electrodes and the ...
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IEEE Transactions on Industry Applications, 1983
High-resistance grounding of electrical power systems offers many of the advantages of both solidly grounded systems and ungrounded systems, including practical suppression of transient overvoltages, practical reduction of equipment damage due to ground fault, and the ability to continue to operate a system with a ground fault present on one phase. The
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High-resistance grounding of electrical power systems offers many of the advantages of both solidly grounded systems and ungrounded systems, including practical suppression of transient overvoltages, practical reduction of equipment damage due to ground fault, and the ability to continue to operate a system with a ground fault present on one phase. The
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2018
The determination of the specific resistance of representative soils taken from tthe surface strata of the Salt Lake Valley, with varying water contents, was the problem confronting the writers at the beginning of the investigation. In the following thesis an attempt is made to explain the methods used in the exact solution of the problem stated above,
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The determination of the specific resistance of representative soils taken from tthe surface strata of the Salt Lake Valley, with varying water contents, was the problem confronting the writers at the beginning of the investigation. In the following thesis an attempt is made to explain the methods used in the exact solution of the problem stated above,
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2016
The value of the ground resistance is a very important factor to be considered for reliable operation of electrical appliances at home, industry and commercial buildings. The ground resistance essentially provides three important characteristics, namely (i) zero potential reference for the electrical system, (ii) low resistance path to protect ...
Md. Abdus Salam, Quazi M. Rahman
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The value of the ground resistance is a very important factor to be considered for reliable operation of electrical appliances at home, industry and commercial buildings. The ground resistance essentially provides three important characteristics, namely (i) zero potential reference for the electrical system, (ii) low resistance path to protect ...
Md. Abdus Salam, Quazi M. Rahman
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Android tool to evaluate grounding resistance
2015 IEEE International Telecommunications Energy Conference (INTELEC), 2015In the absence of sources of rapidly varying field, the study of the potential distribution determined, in a linear medium, by a geometrically complex grounding may be conducted by applying the method of superposition of the effects, known as method of subareas of Maxwell.
VIOLA, Fabio +5 more
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Calculation of grounding resistance
Electric Power Systems Research, 1984Abstract This paper introduces an algorithm for the calculation of grounding resistance based on the boundary element method (or current simulation method). A series of computer results for different kinds of grounding systems is presented. On the basis of the computer results, an evaluation is made of commonly used formulas for grounding resistance ...
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Grounding System Parameters and Expression of Ground Resistance
2016In any electrical circuit network, the circuitry that provides a path between the parts of the circuit and the ground, is known as the grounding system. The grounding system is required for reliable operation of any electrical equipment including generator, transformer, power system tower, and other power system installation under fault conditions.
Md. Abdus Salam, Quazi M. Rahman
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Directional ground fault indicator for high-resistance grounded systems
IEEE Technical Conference Industrial and Commerical Power Systems, 2002Locating ground faults is a difficult and challenging problem for low-voltage power systems that are ungrounded or have high-impedance grounding. Recent work in pilot signals has renewed efforts in developing fault location methodologies. This paper presents a method for directional ground-fault indication that utilizes the fundamental frequency ...
T. Baldwin, F. Renovich, L.F. Saunders
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Grounding for surge-protective devices ground resistance versus ground impedance
2006 IEEE Power Engineering Society General Meeting, 2006The aim of this paper is to address the often loosely used terms of impedance and resistance as related to grounding, and to educate the reader as to the significant difference between these two terms when contemplating the behavior of grounding systems impressed with transient impulse currents.
A.J. Surtees +2 more
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