Results 211 to 220 of about 8,720 (263)
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Resistance to ground and mesh voltages of ground grids
Proceedings of the Institution of Electrical Engineers, 1979The paper presents the results of a digital analysis of a wide set of square and rectangular grounding grids. The diagrams for grid resistances and mesh voltage factors are displayed appropriate for practical design purposes. Simple approximate formulas for both grid parameters considered are also proposed, providing a fair estimation of the parameters.
J. Nahman, S. Skuletich
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DETERMINATION OF THE MUTUAL GROUND RESISTANCE OF ADJACENT GROUNDING GRIDS
Journal of Energy - Energija, 2022The article discusses the determination of the mutual ground resistance of two adjacent metallically connected grounding grids. For this purpose, an original analytical expression for calculating the corresponding mutual ground resistance of two adjacent grounding grids has been developed.
null Ivan Sarajčev +2 more
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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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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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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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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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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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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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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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