Initially, they were used to quickly solve the nonlinear load flow problem and calculate short circuit currents, but their use has been extended to many other areas such as power system stability, protection and coordination, contingency reliability, economic modelling, etc. Main ground grid analysis of etap is suitable only for a simple soil condition. Ground grid systems software ground grid design etap. Absolute potential, grounding system software, etap 12. Proper touch voltage calculations must occur onemeter from any metallic object. The analysis of mesh is carried out using both ieee 802000 and finite element methods for the evaluation of important ground grid mesh parameters. Get opinions from real users about etap software with capterra. The only free software program for grounding design calculations is ericogem and because. Voltage drop and short circuit calculations using etap easily in english duration. Power systems analysis and simulation software are ubiquitous in electrical engineering practice. Earth mat design for 233kv substation in rivers state using etap.
Design and analysis of ground grid system for substation using etap software and fdm code in matlab written by deep b. High efficient multicore parallel calculation allows. Design of earthing grounding system in a substation grid. Analyze the effect of balanced and unbalanced faults using etap short circuit analysis software. The cyme power engineering software is a suite of applications composed of a network editor, analysis modules and usercustomizable model libraries from which you can choose to. If ground resistance is r 5 ohms, i have to provide extra ground wires and extra ground rods. Substation earthing system journal of trend in design requires calculating of parameter. This type of analysis is particularly necessary for nuclear generation plants and for special conditions when the connection to a power grid is lost and recovery of the power supply to some critical loads is mandatory.
Electrical 20142018 sardar vallabhbhai institute of technology, vasad vadodara, india abstractthe paper depicts about design of ground grid system for 6611kv rectangular substation. The substation ground grid design also takes into consideration of the freezing and raining season. Learn more about etap software price, benefits, and disadvantages for businesses in south africa. Design and development of etap software focusing on the ground grid, cable analysis, control diagram analysis and. Hi, this is the first time that ill be doing a calculation on the ground grid study of a plant. 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. Detailed short circuit calculation using etap pac basics. That what must be provided is ground resistance r 5 ohms minimum.
Ground grid systems software ground grid design ieee. Overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and. The video say analysis using ieee 80 standard and finite element method fem. Is using cdegs for design of the substation earthing. 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. Skm groundmat is a program for substation ground grid design and analysis. The etap software version 12 is used for modeling and analysis of network. Soil resistivity is a major factor influencing substation grid 6470, volume3. Earth mat design for 233kv substation in rivers state. The ground grid systems module enables engineers to quickly and accurately design and analyze ground protection. Flow of the earth system, cause voltage gradients ground.
Ieee 15842018 arc flash incident energy calculation method using etap duration. Etap electrical power system analysis software power. We are in process of doing earthing calculation for a small project. Optimal design of earthmat for 110kv substation using etap 12.
Etap training course in bangalore, electrical etap, dialux. The ground grid system ggs module included in latest version of etap i. Grounding design calculations part seventeen electrical. The cyme power engineering software is a suite of applications composed of a network editor, analysis modules and usercustomizable model libraries from which you can choose to get the most powerful solution.
Overview on etap capabilities in ground grid system design and analysis using ieee 80. Etap is a full spectrum analytical engineering software company specializing in the analysis, simulation, monitoring, control, optimization, and automation of electrical power systems. Design and analysis of ground grid system for substation. Pdf design of earthing system for 230 kv high voltage.
How to run a load flow calculation in etap example 1 duration. Screenshot of etap software nevertheless, this is not the only difference. Etap model for earth mat design etap model for earth. Design of network grid by etap software in this section, we complete the previous studies and aided software etap, a. Instead an progress bar display will help user to understand the estimated time to complete calculation. Easypower is partnering with the industryleading grounding and emi analysis expert company, sint ingegneria, which offers a software package to analyze and design grounding, lightning and electromagnetic interference problems by focusing on its powerful and yet affordable grounding analysis software packages, xgslab. I am trying to calculate this, but i do not have here any. This calculation is based primaril y on the guidelines. Etap electrical engineering software offers the best and most comprehensive suite of integrated power system enterprise solution. Safety analysis of grounding grid for substations with. The plant which im doing the study on is definitely bigger than that. Moreover, this software also provides finite element modeling fem of the ground grid for detailed analysis. It uses a generalpurpose finite element algorithm for potential analysis and graphical facilities to validate ground system efficiency. Core modeling and tools allow you to quickly and easily build 3phase and 1phase ac and dc network oneline diagrams and gis views with unlimited buses and elements including detailed instrumentation and grounding components.
I experienced very difficult soil condition with resistivity in the range of 8001500 ohmm which etap cannot help and electricity authority disapproved analysis using etap. Design and analysis of ground grid system for substation using etap software and fdm code in matlab deep b. Etap generator startup analysis is a special feature of the etap transient stability program. 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. The single linetoground fault current is actually divided and redivided as it passes through the grid, reducing the actual current at any given point in the system. It is designed to help optimize grid design or reinforce existing grids of any shape. Design earthing or grounding grid using etap in english youtube.
Short circuit calculation using etap can be done through the short circuit analysis module. Grounding grid calculations in etap mike holts forum. I am trying to calculate this, but i do not have here any grounding software or any book with a calculation. First, ieee transactions on power delivery apr 2002 pg 596 gives the method for calculation whereone has finte volumes of resitivity within a certain background resistivity. The only free software program for grounding design calculations is ericogem and because of this, it will be explained in this article. As a fully integrated modeldriven enterprise solution, etap extends from. Pdf design analysis and optimization of ground grid mesh. Safegrid earthing electrical calculations and design software. During my simulation of the ground grid study, i noticed that the maximum grid area that etap can calculate is 10,000 sqm.
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. Sep 12, 2014 overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. Design and analysis of substation grounding grid with and without considering seasonal. Nov 15, 2010 hi, this is the first time that ill be doing a calculation on the ground grid study of a plant. Grounding design calculations part nine electrical knowhow. Pdf design analysis and optimization of ground grid mesh of. Design and analysis of ground grid system for substation using etap software and fdm code in matlab. The tools either come as standalone packages or plugin modules to power system analysis software such as ptws groundmat or etap s ground grid design assessment. Ieee 80 ground grid resistance report electrical engineering. The earth system for different conditions, the study is performed in three cases. This module allows the calculation of fault duties according to the c37 series of the ansiieee standards and can be accessed from the mode toolbar as shown in figure 1.
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. Computer software packages can be used to assist in earthing grid design by modeling and simulation of different earthing grid configurations. High and medium voltage electricity ac substations. Main ground grid analysis of etap is suitable only for a. I can suggest 2 papers that give the algorithm for ground grid analysis. Easypower is partnering with the industryleading grounding and emi analysis expert company, sint ingegneria, which offers a software package to analyze and design grounding, lightning and electromagnetic interference problems by focusing on its powerful and yet affordable grounding analysis software packages, xgslab easypower is the exclusive representative. Electrical engineers use powertools to perform harmonic analysis, transient stability analysis, short circuit analysis, and to determine demand load, voltage drop, arcflash hazard analysis and protective device coordination. In this webinar, learn how to obtain accurate and economical ground grid designs by quickly identifying appropriate ground grid layouts, while efficiently conducting studies using integrated fault analysis tools. Expands the users knowledge to include methods to automatically perform multiple. Electrical transient analyzer program etap is an electrical network modeling and simulation software tool used by power systems engineers to create an electrical digital twin and analyze electrical power system dynamics, transients and protection. The problem for engineering firms with etap is that the program is simply inaccurate, and meeting. Flexible design methodologies allow for quick autodesigned layouts or very detailed schemes.
The computation program modules resap, malt and fcdist are used for this study. Advanced 3d technology integrates with oneline diagrams, enabling engineers to visualize their ground systems and seamlessly utilize short circuit results. Pdf design analysis and optimization of ground grid mesh of extra. In case a student faces such a scenario after doing a course, certain prerequisite we have on selecting candidates for interview are internal assessment test, real time projects, assignments, mock round of interview, hr round of interview, 80100 % attendence, 80% plus grade in.
We have standardized the usage of powertools for windows captor and dapper. Design and analysis of substation grounding grid with and without considering seasonal factors using edsa software mithun mondal, dr r. Many have experienced the frustration of a power outage resulting from a failed. Cable sizing calculation based on various standards including nec and iec. Firstly, expected maximum short circuit current of ohia 233kv substation is determined. High efficient multicore parallel calculation allows fast analysis of irregular largescale renewable applications. Short circuit analysis short circuit software etap. Etap 12 having more enhanced features than previous versions. Etap model for earth mat design etap model for earth mat design. Furthermore, the analysis of software graph is done by fdm finite difference. Annex c of the standard uses a graphical method to approximate the grid current.
Enterprise software solution for electrical power systems etap is the most comprehensive electrical engineering software platform for the design, simulation, operation, and automation of generation, transmission, distribution, and industrial systems. Is etap software the right electrical design solution for your business. The next generation ground grid systems module enables engineers to quickly and accurately design and analyze ground protection. Etap short circuit software makes it easy to go from selecting elements, from the comprehensive library of short circuit current ratings, to performing dozens of different types of short circuit analysis. 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. This scenario though very rare at technologics, always poses a big question mark to the fresherstudents. Optimized design of substation grounding system using. The star view of etap software is its unique feature which is helpful in coordinating the overcurrent relays correctly. This worksheet includes the block diagram which illustrates the sequences of steps to design the ground grid of. 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. Optimized design of substation grounding system using newly developed ieee compliant software issn. Farrokh shokooh is the founder and current ceo of etap. Design analysis and optimization of ground grid mesh of extra high voltage substation using an intelligent software. Overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem.
Powertools for windows ptw is created and sold by skm systems analysis, inc. Etap grid as part of the smart grid solution provides the necessary mission critical applications for visualizing, managing, optimizing and automating distribution networks from statewide to. Design and analysis of substation grounding grid with and. We have found that this program is easy to use, very stable, and meets our high quality standards. Colorcoded graphical plots provide impressive results. Sankosha grounding grid calculator tool is for helping to see what kind of resistance results will be obtained when using sanearth with a grounding grid applicaiton. Simulation of power system analysis using computer softwares enables better understanding of the large system and provides better solution to problem.
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