Results 261 to 270 of about 61,237 (302)
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Transient impedance of GIS grounding grid
IEEE Transactions on Power Delivery, 1995The transient impedance of a grounding grid for a commercial 550 kV gas-insulated substation (GIS) was measured on site using steep front currents with rise time from 100 ns to 2 /spl mu/s. From the measured results, it was found that the transient impedance of the measured grid for those currents is simulated by a series circuit with an inductance 1 ...
S. Karaki +6 more
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A Detection Radar for Grounding Grid
2018 2nd IEEE Advanced Information Management,Communicates,Electronic and Automation Control Conference (IMCEC), 2018G281 grid is the key infrastructure to ensure that the safety and stable operation of the power grid and the personal safety. Buried in the ground, restricted by the surface buildings, the grounding grid is difficult to detect and maintain. In order to overcome the difficulty of high-voltage transmission and detection in substation grounding grid, a ...
Zhongming Wang +3 more
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Analysis of grounding grid of substation
2017 International Conference on Circuit ,Power and Computing Technologies (ICCPCT), 2017The grounding system requires for maintaining safety of operators and apparatus and ensuring reliable working of power network. A grounding of substation connects electrical apparatus and the metallic structures to the common ground. Grounding system of substation should be such that it should limit the potential gradients with in and around substation
Chetan S. Payshetti +2 more
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Graphical Data for Ground Grid Analysis
IEEE Transactions on Power Apparatus and Systems, 1983The paper presents graphical data for the calculation of ground grid resistance, corner mesh potential and corner step potential for a restricted class of ground grids. The restricted class of ground grids are similar to those considered in the IEEE Guide for Safety In Substation Grounding, IEEE Standard 80-1976, where the primary restrictions are ...
E. B. Joy +5 more
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Common-Ground Transformerless Grid-Connected Inverters
2020Rule 1 for eliminating leakage current of full-bridge TLIs and Rule 2 for eliminating leakage current of half-bridge TLIs have been discussed in Chaps. 3 and 4, respectively. This chapter focuses on Rule 3 used in common-ground TLIs. Common-ground TLIs mean that the neutral line of the grid is directly connected to the negative terminal of the PV ...
Huafeng Xiao, Xiaobiao Wang
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Experimental impulse response of grounding grids
2011 7th Asia-Pacific International Conference on Lightning, 2011Experimental tests, consisting in the impression of low amplitude impulsive currents with lightning-patterned waveforms on a real grounding grid, were performed to assess the grid transient response. Simultaneous waves of current and grounding potential rise were measured considering the current impression on different points along the grid electrodes (
Silverio Visacro +3 more
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Impulse impedance of rectangular grounding grids
IEEE Transactions on Power Delivery, 1992In an earlier work B.R. Gupta and B. Thapar (1980) presented the results of investigations and empirical formulae to evaluate the impulse impedance of square grounding grids. In the present work, the authors extend those investigations to the rectangular grounding grids.
B.R. Gupta, V.K. Singh
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Simplified Analysis of Rectangular Grounding Grids
IEEE Transactions on Power Apparatus and Systems, 1979A simple and rapid method for designing and analyzing regular, multimeshed rectangular grounding grids is presented. The procedure is based on an extension of principles enunciated in IEEE Standard 80 dated June 30, 1976. By this method, using an engineering type pocket calculator, touch potentials can be determined in a few minutes for any given set ...
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Effect of grid spacing on the inductance of ground grids
IEEE 1991 International Symposium on Electromagnetic Compatibility, 2002The effect of grid spacing on the inductances of various paths on a printed circuit board (PCB) is investigated numerically. Partial inductances of the various segments of the paths and the ground grid are incorporated into a lumped model which is solved for the currents using the mesh current method.
T.S. Smith, C.R. Paul
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Experimental impulse response of grounding grids
Electric Power Systems Research, 2013Abstract Experimental tests, consisting in the impression of low amplitude impulsive currents with lightning-patterned waveforms on a real grounding grid, were performed to assess the grid transient response. Simultaneous waves of current and grounding potential rise were measured considering the current impression on different positions along the ...
Silverio Visacro +2 more
openaire +1 more source