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Comparison of touch and step voltages between IEEE Std 80 and IEC 479-1
IEE Proceedings - Generation, Transmission and Distribution, 1999A comparison of the safety criteria of two widely accepted standards, i.e. the IEEE Std 80 and the IEC 479-1 is proposed. The two standards differ in their definitions of permissible body current and body resistance. Another difference is that the IEC 479-1 does not provide guidance on human feet/soil contact impedances.
C.-H. Lee, A.P. Sakis Meliopoulos
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Study of Step and Touch Voltages in Resistive/Capacitive Ground due to Lightning Stroke
The 2006 4th Asia-Pacific Conference on Environmental Electromagnetics, 2006This paper aims to calculate step and touch voltages around transmission line tower foot due to lightning strike to the transmission line tower top and injecting the lightning current into resistive/capacitive ground. The transmission tower foot is modeled as hemisphere electrode impeded in the ground with specific conductivity and permittivity.
Mohamed Nayel +4 more
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Thevenin source resistances of the touch, transferred and step voltages of a grounding system
IEE Proceedings - Generation, Transmission and Distribution, 1999The source resistances for surface voltages (touch, transferred and step voltage) are considered. It is proved that the source resistances of the touch and transferred voltages are the same, given by the grounding resistances between the feet of a human and the grounding system.
Y.L. Chow, M.M.A. Salama, G. Djogo
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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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A Thevenin equivalent approach for touch voltage and step voltage
2000This paper describes numerical algorithm for accurate computing of the touch voltage and step voltage. The algorithm is based on the Thevenin equivalent and grid model of the human's feet.It is practically to use this accurate approach only for some very important points on the earth surface because Thevenin equivalent circuit is valid only for a given
Sarajčev, Ivan +2 more
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Grounding resistance, step and touch voltages for a driven vertical rod into two layer model soil
2010 International Conference on Power System Technology, 2010This paper presents a new technique to calculate the grounding resistance (R g ), the touch and step voltages due to discharging current into a vertical rod in two layer soil. The technique is used the current simulation method (CSM). The study of grounding resistance and earth surface potential (ESP) are the outcome of mathematical manipulations of ...
null Sobhy Serry Dessouky +2 more
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Proceedings of the 2019 The 2nd International Conference on Robotics, Control and Automation Engineering, 2019
Single-phase grounding fault of distribution network system will cause ground potential rise, electric shock accident occurs when the human body enters the diffuser area. The coupling model of transmission line, human circuit, reinforced concrete bar and underground electric field is analyzed.
Yuzhu Luo +5 more
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Single-phase grounding fault of distribution network system will cause ground potential rise, electric shock accident occurs when the human body enters the diffuser area. The coupling model of transmission line, human circuit, reinforced concrete bar and underground electric field is analyzed.
Yuzhu Luo +5 more
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Electric Power Systems Research, 2017
Abstract This paper discusses the development of a new methodology for measurements of earth resistance and touch and step voltages in ground mesh of urban power substations. The main challenge of the work is to find a feasible solution for performing earth resistance measurements from short distances, given that this is the condition actually found ...
Adroaldo Raizer +2 more
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Abstract This paper discusses the development of a new methodology for measurements of earth resistance and touch and step voltages in ground mesh of urban power substations. The main challenge of the work is to find a feasible solution for performing earth resistance measurements from short distances, given that this is the condition actually found ...
Adroaldo Raizer +2 more
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18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005
Earth faults in the medium voltage (MV) grid cause touch and step voltages in the low voltage (LV) grid. Since MV and LV grid share their earthing system at the MV-LV transformer, one might question the safety with respect to LV customers in case of a phase-to-earth fault, occurring in the MV grid. Models and actual measurements in a operating grid are
Erp, van, F.T.J. +5 more
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Earth faults in the medium voltage (MV) grid cause touch and step voltages in the low voltage (LV) grid. Since MV and LV grid share their earthing system at the MV-LV transformer, one might question the safety with respect to LV customers in case of a phase-to-earth fault, occurring in the MV grid. Models and actual measurements in a operating grid are
Erp, van, F.T.J. +5 more
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2017 International Conference on High Voltage Engineering and Power Systems (ICHVEPS), 2017
In grounding system design, there are many parameters that affect touch voltage, step voltage, and grid resistance such as depth of grid, mesh size, number of rod, length of rod, size of buried conductor, etc. This research simulated effect of mesh size, number of rod, and length of rod, where 3 design models were created.
Ishak Kasim, Syamsir Abduh, Nur Fitryah
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In grounding system design, there are many parameters that affect touch voltage, step voltage, and grid resistance such as depth of grid, mesh size, number of rod, length of rod, size of buried conductor, etc. This research simulated effect of mesh size, number of rod, and length of rod, where 3 design models were created.
Ishak Kasim, Syamsir Abduh, Nur Fitryah
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