Results 271 to 280 of about 149,471 (307)
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A Practical Approach for Determining the Ground Resistance of Grounding Grids
IEEE Transactions on Power Delivery, 2006This paper starts from the premise that ground resistance is independent of earth-fault current and presents a new method for calculating the ground resistance of grounding grids using the finite-element method. The results obtained using the method proposed are compared with results measured experimentally and results published by other authors.
null Guemes-Alonso +3 more
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IEEE Transactions on Power Delivery, 1999
Decreasing the ground resistance of a grounding system in high resistivity soil is often a formidable task. A new method is proposed to decrease ground resistances. This method requires three steps: (1) drilling deep holes in the ground; (2) developing cracks in the soil by means of explosions in the holes; and (3) filling the holes with low ...
null Qingbo Meng +3 more
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Decreasing the ground resistance of a grounding system in high resistivity soil is often a formidable task. A new method is proposed to decrease ground resistances. This method requires three steps: (1) drilling deep holes in the ground; (2) developing cracks in the soil by means of explosions in the holes; and (3) filling the holes with low ...
null Qingbo Meng +3 more
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Analysis and comparison of resonance grounding with low resistance grounding
2010 5th International Conference on Critical Infrastructure (CRIS), 2010The scale of medium voltage networks have been expanding and cables are increasingly used so that nowadays capacitance currents are much greater than before when single line-to-ground faults happen. And the harm of an arcing ground overvoltage is extremely severe in an ungrounded system. To solve the problem put forward, the neutral of a medium voltage
null Lei Li +5 more
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Soil Resistivity Evaluation and Grounding System Resistance
2018This chapter contains the factors affecting the soil resistivity and grounding resistance such as the soil moisture content, soil mineral content and soil temperature. It discusses the methods of measuring of soil resistivity and grounding resistance using Wenner method.
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The Reality of High-Resistance Grounding
IEEE Transactions on Industry Applications, 1977In recognition of the successful applications of high-resistance grounding of industrial power systems primarily in the continuous process industries, an attempt is made to identify the broad application areas as well as to offer qualifications regarding the application of the high-resistance grounding concept.
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Calculation of Impulse Grounding Resistance of Extended Grounding Electrode
2013In order to calculate the impulse grounding resistance of extended grounding electrode accurately, this paper introduces a method for computing the impulse grounding resistance based on the spark discharge characteristic of the earth, using a nonlinear differential circuit model. The relation curves of impulse grounding resistance with the current peak
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Measurement of Impulse Grounding Resistance
Advanced Materials Research, 2012A kind of measurement method of impulse grounding resistance is proposed. The measurement method of impulse grounding resistance is also analyzed and discussed theoretically. The hardware and software scheme of measurement system is given. The method of simulation of thunder current and transformation calculation is better than the method of work ...
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Ground resistance of a vertical ground rod in homogeneous earth
2022 2nd International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED), 2022Dimitrios Tsiamitros +6 more
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A method for grounding resistance calculation of vertical electrode
Electric Power Systems Research, 2023Sunghyok Kim
exaly