Results 261 to 270 of about 1,871,046 (295)

Analysis and comparison of resonance grounding with low resistance grounding

2010 5th International Conference on Critical Infrastructure (CRIS), 2010
The 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, null Lixiao Duan, null Jingshu Zhou, null Jian Zhang, null Wenzhong Zhou, null Bo Li   +5 more
openaire   +1 more source

The measurement of impulse grounding resistance and inductance of grounding network

Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137), 2002
It is well known that accurate measurement of grounding resistance and inductance under impulse voltage is of great importance for safe operation of electrical and electronic equipment. It is the behavior of grounding objects under impulse voltage instead under DC voltage that determine the safe operation of equipment.
null Chen Yunping, null Zha Xiaoming, null Zhao Lei   +2 more
openaire   +1 more source

A new method to decrease ground resistances of substation grounding systems in high resistivity regions

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, null Jinliang He, F.P. Dawalibi, J. Ma   +3 more
openaire   +1 more source

Calculation of Impulse Grounding Resistance of Extended Grounding Electrode

2013
In 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
openaire   +1 more source

The Ground Resistance Reduction Effect of o Conductive Expansion Ground Resistance Reducing Material

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2008
The grounding systems provide a low resistance path for fault or normal currents into the earth. The material for reducing ground resistance is buried around the grounding electrode to increase its effective size of the electrode and thus to obtain low ground resistance.
openaire   +1 more source

Grounds of Resistance

2011
Kohn Margaret, McBride Keally
openaire   +1 more source

Ground resistance of a vertical ground rod in homogeneous earth

2022 2nd International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED), 2022
Dimitrios Tsiamitros, Dimitrios Stimoniaris, Nikolaos Lettas, Nikolaos Pasialis, Evangelos Boutsiadis, Nikos Chrysopolitis, Georgios Christoforidis   +6 more
openaire   +1 more source

Soil Treatment to Reduce Grounding Resistance by Applying Low-Resistivity Material (LRM) Implemented in Different Grounding Systems Configurations and in Soils with Different Resistivities

Applied Sciences (Switzerland), 2022
Edgar Antonio Barragan Escandon, Freddy Sinchi, Flavio Quizhpi-Palomeque   +2 more
exaly  

A method for grounding resistance calculation of vertical electrode

Electric Power Systems Research, 2023
Sunghyok Kim
exaly  

The Calculation of Resistances to Ground and of Capacitance

Journal of Mathematics and Physics, 1931
openaire   +1 more source