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Design and implementation of intelligent detection equipment for corrosions status of grounding grid
2020 5th Asia Conference on Power and Electrical Engineering (ACPEE), 2020There is a serious shortage of corrosion state detection device for grounding grids in today's market, so this study aims to design and develop a grounding grid corrosion state intelligent detection device. Firstly, the device is based on the measurement
Gao Yongchong +4 more
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The effects of Cl−and direct stray current on soil corrosion of three grounding grid materials
, 2020The purpose of this paper is to study the effects of Cl− and direct stray current on the soil corrosion of three grounding grid materials.,The electrochemical corrosion properties of three grounding grid materials, which include the Q235 steel, Q235 ...
Zhu Zhiping +3 more
semanticscholar +1 more source
Impulse transient characteristic of grounding grids
2002 3rd International Symposium on Electromagnetic Compatibility, 2003The lightning transient characteristics of a substation grounding grid are analyzed in detail, especially considering the dynamic and nonlinear effects of soil ionization around grounding conductors and the inductance between grounding conductors. The analysis results are calculated by a loss transmission-line model with distributed time-variable ...
null Gao Yanqing +3 more
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Grounding Grids for High-Voltage Stations
IEEE Transactions on Power Apparatus and Systems, 1963ln most high-voltage switchyards, basic grounding systems are formed by a grid of horizontally buried conductors. A method is developed to determine more accurately the resistance of such grounding systems. The dimensions are those usually encountered in practice with the conductors buried near the surface of the earth. The varying soil resistivity may
B. Thapar, E. B. Gross
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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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Modeling of Substation Grounding Grid Design Using Lab View Graphical User Interface
2019 3rd International Conference on Electrical, Telecommunication and Computer Engineering (ELTICOM), 2019Substation design that refers to IEEE Standard 80–2000 can be carried out through manual calculation. Considering that there are lot of data involved used and also repeated calculations, it will be very difficult and requires high accuracy.
S. Hardi +2 more
semanticscholar +1 more source
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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