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Influence of Ground Potential Rise on Recloser Control Broad in Distribution Lines
2006 International Conference on Power System Technology, 2006This paper presents the numerical analysis method of current distribution electromagnetic fields, using grounding and soil structure analysis (CDEGS) software to interpret apparent resistances field measurement result. The steepest descent method is the function of least-square criterion which is adopted to translate and to explain the field measured ...
Kristina Withironprasert +3 more
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Electric power systems research, 2019
Wind turbines are very vulnerable to lightning strikes due to their height, sharp edges and remote locations often with high soil resistivity. In this paper we present numerical simulations of the impedance of a typical wind turbine grounding geometry. We analyze the influence of interconnecting grounding systems of different wind turbines. IEC TR61400-
Poljak, Dragan, Šunjerga, Antonio
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Wind turbines are very vulnerable to lightning strikes due to their height, sharp edges and remote locations often with high soil resistivity. In this paper we present numerical simulations of the impedance of a typical wind turbine grounding geometry. We analyze the influence of interconnecting grounding systems of different wind turbines. IEC TR61400-
Poljak, Dragan, Šunjerga, Antonio
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2016 IEEE Industry Applications Society Annual Meeting, 2016
The multi-grounded shield wire transmission scheme is common within North American utilities. The ground potential rise (GPR) for this transmission scheme is important as it is to be used to develop specifications for systems and component protection.
Xiaodong Liang +2 more
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The multi-grounded shield wire transmission scheme is common within North American utilities. The ground potential rise (GPR) for this transmission scheme is important as it is to be used to develop specifications for systems and component protection.
Xiaodong Liang +2 more
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Calculation and Analysis of the Impact of Ground Potential Rise on 10kV Lightning Arrester
2019 IEEE Sustainable Power and Energy Conference (iSPEC), 2019As the capacity of the power system continues to expand, the risk of explosions in 10kV arresters is increased due to ground potential rise. This paper analyzes the mechanism of the 10kV arrester affected by ground potential rise, and determines that the arrester explosion caused by the insufficient flow capacity is the main problem to be prevented at ...
Lu Zhang +5 more
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Ground potential rise influence near HV substations in urban areas
16th International Conference and Exhibition on Electricity Distribution (CIRED 2001), 2001When the grounding system of a high voltage substation is connected to uncoated metallic shielded cables, they act as a part of the grounding system, and have large influence on the potential distribution around the substation. National and international regulations define the potential contour 430 V as a border of the GPR zone of influence on ...
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Transient Ground Potential Rise in Gas Insulated Substations and Analysis of Effective Factors
ASME 2015 Power Conference, 2015This study presents the way of implementation of transient modeling concepts which are fully analyzed in referred standards, for the purpose of evaluating the Transient Ground Potential Rise (TGPR). This is a phenomenon of 10–100kV voltages with up to 10μs duration on the grounded enclosure of Gas Insulated Substations (GIS), which may cause concern ...
Maziar Babaei +2 more
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2008 International Conference on High Voltage Engineering and Application, 2008
Lightning current and ground potential rise (GPR) results of artificially trigged lightning experiment in Binzhou of Shandong Province during the summer of 2006 are described in this paper. The variation of grounding resistance of grounding electrode is analyzed according to the data of experiment.
Sun Zhen +5 more
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Lightning current and ground potential rise (GPR) results of artificially trigged lightning experiment in Binzhou of Shandong Province during the summer of 2006 are described in this paper. The variation of grounding resistance of grounding electrode is analyzed according to the data of experiment.
Sun Zhen +5 more
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An Analysis of the Ground Surface Potential Rise and Hazardous Voltages Caused by Impulse Currents
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2011Lightning and switching surges propagating through the grounding conductors lead to transient overvoltages, and electronic circuits in information technology systems are very susceptible to damage or malfunction from the electrical surges. Surge damages or malfunctions of electrical and electronic equipment may be caused by potential rises.
Bok-Hee Lee +3 more
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On ground potential rise presented by small and large earth electrodes under lightning conditions
2017 IEEE AFRICON, 2017Electrode resistance is a typical measure of whether a buried electrode meets the design criteria of the electrode. In this context, IEC 62305 promulgates a value of 10 Ω as maximum value for adequate lightning protection. In this paper it is argued that, in addition to electrode resistance, lightning ground potential rise is another important ...
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Step and Touch Voltages and Grounding Potential Rise (IEEE and IEC)
2018This chapter contains safety criteria according to IEEE Standards, step and touch voltage criteria, reduction factor, simplified equations for mesh and step voltage, application of step and mesh potential in safe earthing system design, safety criteria, IEC 479-1 STD, permissible touch and step voltage according to IEC 479-1, Optimum Compression Ratio (
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