Results 251 to 260 of about 24,284 (286)

An alternative approach for touch and step voltages measurement in high-voltage substations

Electric Power Systems Research, 2016
Abstract This paper presents the study of a measurement technique for touch and step voltages. In essence, we elaborate an approach which is very similar to the measurement of the grounding system impedance. In addition, the main focus is on the measurements at energized substation where different types of coupling between the test leads, grounding ...
Kostić, Vojin, Raičević, Nebojša
openaire   +2 more sources

A Practical Probabilistic Method to Evaluate Tolerable Step and Touch Voltages

IEEE Power Engineering Review, 1984
A simplified probabilistic method to calculate the risk of the human body withstand voltage to be exceeded by step and/or touch voltages appearing during abnormal system fault conditions is presented in this paper. The determination of density probability functions and cumulative distributions are done by using characteristic parameters of well known ...
Wen Wang, Raul Velazquez, Dinkar Mukhedkar, Yvon Gervais   +3 more
openaire   +2 more sources

Assessment of fault potential and touch voltage in the low-voltage distribution line system of the residential community

Electric Power Systems Research
Jinxin Cao, Dongyu Li, Yuxuan Ding
exaly   +2 more sources

Experimental measuring of the touch voltages in large compensated networks

2012 Electric Power Quality and Supply Reliability, 2012
A connection between a phase conductor and the ground in MV networks is called earth fault. The fault current in this case does not depend on the point of the fault, but only on the total capacity (size) of a network. Distribution system operator (DSO) sometimes needs to operate the large network which means operating of the network with big capacitive
P. Toman, D. Topolanek, J. Orsagova, J. Dvorak   +3 more
openaire   +1 more source

A new method and instrument for touch and step voltage measurements

IEEE Transactions on Power Delivery, 1994
This paper describes a new method and instrument for measuring touch and step voltages near a grounding system, for example in and around a substation. The hardware, software, and testing procedures are an extension of the smart ground multimeter, developed under EPRI sponsorship.
A.P.S. Meliopoulos, S. Patel, G.J. Cokkinides   +2 more
openaire   +1 more source

Evaluation of mesh and touch voltage at substations

IEE Proceedings - Generation, Transmission and Distribution, 2002
Site tests, to measure the voltages on the surface of the ground above a grid for comparison with calculated values, are only of general interest if the ground has uniform resistivity at and below the grid. However, such conditions rarely if ever exist so the only practical alternative way of obtaining general data is to make tests on model grids in a ...
openaire   +1 more source

Effect of compression ratio on touch voltage in layered soil

2014 6th IEEE Power India International Conference (PIICON), 2014
This paper presents analysis of substation grounding grid using exponentially spaced grid. We have mainly focussed on safety touch voltage criterion for various compression ratios of grid. The grids are analysed for single layer soil model with and without ground rods.
M. G. Unde, B. E. Kushare
openaire   +1 more source

TOUCH AND STEP VOLTAGE HAZARD ANALYSIS

This article analyzes the risks associated with electric shock, specifically focusing on the effects of touch and step voltage, which can lead to severe injury or death. Citing international studies, the research confirms that older individuals typically exhibit a body resistance between 1000-2000 Ω, with exposure to 230 V potentially causing dangerous
E.S. Safiyev , S.Y. Shikhaliyeva
openaire   +1 more source

Measurements of touch and step voltages adopting multi current auxiliary electrodes

Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), 2000
With urban development and buildings growth adjacent to power systems, to choose suitable locations for auxiliary electrodes becomes increasingly difficult for testing the resistance, the touch and step voltages E/sub t/ and E/sub s/ in a grounding system.
PARISE, Giuseppe, GRASSELLI, Umberto, IACONELLI R.   +2 more
openaire   +2 more sources

Measurement of touch voltage in electrical installations, in TN system, in low voltage earth fault

Proceedings of 8th Mediterranean Electrotechnical Conference on Industrial Applications in Power Systems, Computer Science and Telecommunications (MELECON 96), 2002
This paper explains two new methods for the measurement of touch voltage, in TN power systems, under low voltage earth faults. After some general considerations of standard measurements, as a consequence of direct experiences and tests, two new methods (voltage drop and volt-amperometric) have been studied as an alternative to the method which foresees
A. Corvino, A. Maurella
openaire   +1 more source