Grounding design calculations part sixteen electrical knowhow. The substation ground grid design also takes into consideration of the freezing and raining season. Eatons cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids. Etap model for earth mat design etap model for earth. Electrical 20142018 sardar vallabhbhai institute of technology, vasad vadodara, india abstractthe paper depicts about design of ground grid system for 6611kv rectangular substation. We use safegrid earthing software for the design of earth grid on complex renewable energy projects, including anaerobic digestion plants, wind farms and solar farms. Optimal ground grid design for large ehv substations. Ground grid systems software ground grid design ieee. In order to make sure the accuracy of this software, the results of grid safety assessment obtained here are also compared with the results calculated by using worldwide used software winigs. This voltage, gpr, is equal to the maximum grid current times the grid resistance. Advanced power concepts grounding analysis and design. Ground grid systems software capabilities fast analysis of irregular largescale renewable ground grid application. The process is a combination of science and art as opposed to pure science, because it is necessary to test the. Overview on etap capabilities in ground grid system design and analysis using ieee 80.
It is designed to help optimize grid design or reinforce existing grids of any shape. Plus, you can also estimate the annual energy production of your plant with it. It was restricted to rectangular grids buried in uniform or twolayer horizontal soils. Review of substation grounding practices, safety and constructability enhancements. Ground grid components ground grid modellingdesign basic shock situations step and touch tolerable body limit ground grid under fault conditions zero sequence analysis evaluating the grid performance current injection test soil resistivity testing ground grid resistance current injection testing.
Its a dense and flexible polyethylene material rather than a textile fabric, and will hold up to just about whatever you want to drive on or do with. The program can use uniform or two layer soil models. Program is designed as per ansiieee 80 code, it calculates step potential of switchyard, touch potential of switchyard, total length of earthing mat conductor, size of earthing mat conductor and total. Pdf design analysis and optimization of ground grid mesh of extra. Application software for analysis and design of grounding grids of substations based on the requirements of the ieee 80 ieee guide for safety in ac substation grounding. The ground grid system ggs module included in latest version of etap i. Design of substation grounding grid using edsa software abstract. The grounding grid provides a common ground for the electrical equipment as well all the metallic structures in the substation. Designing for a low resistance earth interface grounding. Advanced power concepts po box 49116, atlanta ga 30359, phone fax. This method is based on a theoretical manipulation of the numerical moment method and of the. Sds offers various options to build a ground grid in a quick, easy and efficient way.
A simple and accurate formula for calculating the grounding grid resistance is proposed in this paper. I am trying to design a ground grid, but i need to add a ground well a ground rod that is driven deep enough till it is in water, e. The earth system for different conditions, the study is performed in three cases. Made from polyethylene material which lasts the test of time, and will hold any type of aggregate or filling you desire to fill. Etap electrical engineering software offers the best and most comprehensive suite of integrated power system enterprise solution. The result of the design is highly complying with ieee 802000 standard requirements. Moreover, this software also provides finite element modeling fem of the ground grid for detailed analysis. Eaton s cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids and reinforce existing grids, of any shape, by virtue of easy to use, builtin danger point evaluation facilities.
The ground grid module enables engineers to quickly design and analyze ground protection using advanced 3d technology that is integrated with the oneline. Design earthing or grounding grid using etap in english. Computation time was the main obstacle to the systematic use of this automated feature. Earthing mat design for a power substation ms excel. The maximum touch voltage within a mesh of a ground grid.
Designing for a low resistance earth interface grounding roy b. It is designed by sungrow to help you select the right components and their parameters according to your solar power plant requirements. High efficient multicore parallel calculation allows fast analysis of irregular largescale renewable applications. Design of network grid by etap software in this section, we complete the previous studies and aided software etap, a comprehensive optimization with regard to different parameters affecting the immune system to offer the land. Easypower is the exclusive representative of xgslab software in the usa and. Ground mat earth grid design software jpflying electrical op 3 jul 08 18. These assumptions and inputs are required to help facilitate the findings aided by grounding analysis software to ensure an adequate ground grid design for human safety during faulted conditions. Optimal design of substation grounding grid based on genetic. The grounding analysis software can provide supporting. Home download center electrical software earthing mat design for a power substation ms excel spreadsheet what does this spreadsheet do.
Fence is outside of ground grid area, but is not connected to the substation ground grid. In some cases, existing ground grids can be modeled using appropriate software. I am using ground mat to check the designs of a number of external substations in an. Do you want to learn electrical design drawing using autocad, dialux and etap. Design analysis and optimization of ground grid mesh of extra high voltage substation using an intelligent software. Design parameters grounding grid design analysis consists of 5. Computer software packages can be used to assist in earthing grid design by modeling and simulation of different earthing grid configurations. The autogrounddesign package performs automated analyses of grounding earthing systems of any arbitrary perimeter and identifies an economical grid configuration complying with userdefined safety criteria that can be used as the design for grounding grids that are electrically small enough to be considered equipotential. Substation design suite easy and efficient tool for ground. However, experience has shown it is almost always cost beneficial to also test the ground grid instead of attempting just to model the grounding system. Software development of optimal substation ground grid design. Soil measurement data based on wenner fourpin method. Just like with a grid, care must be taken when connecting integrated circuits ics to the pcb ground plane to ensure that return current paths do not cross. Design and analysis of ground grid system for substation.
This software can give analysis of ground grid safety performance and is able to recommend optimal grid design for given safety constraints. Few practical methods exist for comprehensively testing such grounding systems. The design of the ground grid to control voltage levels to safe values should consider the total grounding system to provide a safe system at an economical cost. Is using cdegs for design of the substation earthing system. Ground grid components ground grid modellingdesign basic shock situations step and touch tolerable body limit ground grid under fault conditions zero sequence analysis evaluating the grid performance current injection test soil resistivity testing ground grid resistance. The difference in potential between metallic objects or structures within the substation site that may be bridged by direct handtohand or handtofeet contact. The fence is connected to a separate grounding conductor. Etap model for earth mat design etap model for earth mat design.
Mar 10, 2011 ground grid design assessment software the next generation ground grid systems module enables engineers to quickly and accurately design and analyze a safe and cost. The primary argument for designing a given project on grid is because the project extents are too large to design on a standard groundbased grid system, which ignores the curvature of the earth. Apr 14, 20 design of substation grounding grid using edsa software abstract. Safegrid earthing electrical calculations and design software. Ses implemented the first automated grounding grid design software in the early 90s. This version of sisifo allows the simulation of different types of gridconnected pv systems, such as large gridconnected plants and buildingintegrated installations. Design of substation grounding grid using edsa software. In our opinion computer modeling is the only viable and ethical way to design a substation grounding grid.
Overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. The cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids and reinforce existing grids, of any shape, by virtue of easy to use, builtin danger point evaluation facilities. A ground grid mat study will determine if your substation grounding grid design is safe and will limit the touch and step potential to values below the ieee 80 standard ieee. Solarinfo design is yet another free solar design software for windows.
Design earthing or grounding grid using etap in english youtube. Ground grid systems software ground grid design ieee 80. The earth system for different conditions, the study is performed in. Flexible design methodologies allow for quick autodesigned layouts or very detailed schemes. Lanzoni october 2007 introduction grounding or earthing is the art of making an electrical connection to the earth. Power substation design calculations a checklist of 18. Cyme power engineering software and solutions substation. Design of earthing grounding system in a substation grid. Account for the presence of transmission lines, distribution lines or cables connected to the grounding system, i. Advanced power concepts grounding analysis and design software. Review of substation grounding practices, safety and.
The tools either come as standalone packages or plugin modules to power system analysis software such as ptws groundmat or etaps ground grid design assessment. Design and analysis of substation grounding grid with and. Optimal design of substation grounding grid based on. Design of substation grounding grid using edsa software ieee. A simplified method for calculating the substation grounding. Fence is outside of ground grid area and is connected to the substation ground grid. This version of sisifo allows the simulation of different types of grid connected pv systems, such as large grid connected plants and buildingintegrated installations. The ground grid systems module enables engineers to quickly and accurately design and analyze ground protection. The ground grid system of substation has to be carefully analyzed in order. It had a characterbased dosbased menu interface and was called. It uses a generalpurpose finite element algorithm for potential analysis and graphical facilities to validate ground system efficiency. The ground grid module enables engineers to quickly design and analyze ground protection using advanced 3d technology that is integrated with the one line. Sisifo is an online, freesoftware, simulator of pv systems developed by the iesupm in the frame of the european project pvcrops.
Integrated grounding system analysis program for windows. Grounding system modeling, grounding grid representation, earth conductivity and connected power system. How to reduce emi in mixedsignal systems using proper pcb. Aspix calculates the grid resistance, and touch and step voltages for grids of any shape.
The autogrounddesign software package is the only fully automated. Etap electrical power system analysis software power. It had a characterbased dosbased menu interface and was called autogrid. The etap software version 12 is used for modeling and analysis of network. Effective grounding system design is important as it deals with personnel safety and protection of electrical equipment. Safegrid earthing and grounding design software youtube. Pdf design analysis and optimization of ground grid mesh. Design and analysis of ground grid system for substation using etap software and fdm code in matlab deep b. Safegrid earthing design software complies with ieee std. Ground grid design assessment software the next generation ground grid systems module enables engineers to quickly and accurately design and analyze a safe and cost. Skm groundmat is a program for substation ground grid design and analysis.
Ground mat earth grid design software electric power. Sisifo is an online, free software, simulator of pv systems developed by the iesupm in the frame of the european project pvcrops. In high and medium voltage air insulated substations ais the electromagnetic field, which causes are the static charges of bare cable and conductors and by the atmospheric conditions surges, induce voltages at nolive parts of the installation that create potential differences between metallic parts and ground and also between different points of. Additionally, a full ground plane will shield a pcb more than a ground grid. The difference between neutral and ground on the electric panel. Our 2 thick ground grid is perfect for all sorts of projects. Sep 12, 2014 overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. Cdegs is a computerbased electrical engineering modeling software program that uses ieee 80 calculations as a base, but additionally takes into account multilayer soils and all the other engineering factors mentioned above. Keywordsgenetic algorithm, optimum grounding grid design.
Thank you for purchasing, standartparks cutting edge geo ground grid. Feb 02, 2014 safegrid earthing design software complies with ieee std. Etap is a full spectrum analytical engineering software company specializing in the analysis, simulation, monitoring, control, optimization, and automation of electrical power systems. A ground grid mat study will determine if your substation grounding grid design is safe and will limit the touch and step potential to values below the ieee 80 standard ieee guide for safety in ac substation grounding limits. The large number of nodes in these extensive earth grids makes them a particular challenge, but safegrid manages them with ease, and elek have provided excellent technical. Install mesh grounding system as shown in figure 9 to create an equipotential surface. Etap facilitates an engineer to carry out ground grid design as well as analysis with considerations specified in various standards such as ieee801986, ieee802000 and ieee6651995. Ground plane geometry ensures the lowest possible impedance and often offers the most direct current return paths. The tool also captures created grid data and offers an automatic bom for ground grid design.