Grounding grid design software

It uses a generalpurpose finite element algorithm for potential analysis and graphical facilities to validate ground system efficiency. It had a characterbased dosbased menu interface and was called autogrid. How to calculate fault current in electrical substation. 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. Achievement of the best design for unequally spaced grounding grids.

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. Joe is a principal engineer in the substation engineering department at xcel energy and has held many roles in the department since 1998. Designing for a low resistance earth interface grounding roy b. A new optimization design for grounding grid sciencedirect. Two other important design parameters, which depend upon the value of the ground. Grounding grid integrity testing ground grid integrity testing setup. Optimized design of substation grounding system using. Design and analysis of substation grounding grid with and without considering seasonal factors using edsa software mithun mondal, dr r.

The grounding grid provides a common ground for the electrical equipment as well all the metallic structures in the substation. Most of the design inputs and assumptions for developing a substation ground grid design will usually be provided by the utility or power company. Easypower is partnering with the industryleading grounding and emi analysis expert company, sint ingegneria website, 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. Designing for a low resistance earth interface grounding. Sep 12, 2014 overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. Ground grid systems software ground grid design ieee. Etap model for earth mat design etap model for earth mat design. The maximum electrical potential that a substation grounding grid may attain relative to a distant grounding point assumed to be at the potential of remote earth. Review of substation grounding practices, safety and constructability enhancements authors. Review of substation grounding practices, safety and.

Ground mat earth grid design software jpflying electrical op. 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. Ground mat earth grid design software electric power. The design of grounding grids for substations and buildings is a vital part of the overall power system infrastructure assuring constant power supply to consumers. Design of earthing grounding system in a substation grid. As the most important parameter of the grounding system, the grounding resistance has always been the focus of researchers research. Computer models and test results show close correlation, including predicted touch voltages in and around the sites. System grounding and earthing types analysis software etap.

I have a node on either side of the transformer and have connected the ground grid on the primary side. Individual component modeling like grid conductors and ground rods, description of individual components with a set of equations, groundfault current calculation flowing into the earth. Grounding grids, mats, and sheets are commonly made of copperclad wire and solid copper grounding electrodes with bonded connections. Other design factors include touch potential and step potential. Feb 02, 2014 safegrid earthing design software complies with ieee std. Etap facilitates an engineer to carry out ground grid. 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. If it is so designed, you may introduce it in the calculation as a grounding rod.

Ground grid systems software capabilities fast analysis of irregular largescale renewable ground grid application. Is also useful for magnetic field and electromagnetic interference evaluations. Design and analysis of substation grounding grid with and. For example, for a small substation with some transformers, if there is a fault in the system how will the fault current flow into the grounding system.

Neplan grounding, electromagnetic fields, interference. Important formulas for designing a substation grid earthing system. Safegrid earthing design software complies with ieee std. Grounding design calculations part four electrical knowhow. Elek safegrid earthing and grounding design software. Both new and existing switchyard grounding grids have been tested using this instrumentation. Safegrid earthing and grounding design software youtube.

Two other important design parameters, which depend upon the. A grounding ring at the lowest level will collect all the groundings from all foundations and from here all the electrical equipment will be bonded. Computer software packages can be used to assist in earthing grid design by modeling and simulation of different earthing grid configurations. Safegrid earthing and grounding design software elekcomau. Earthing system is made of a mesh of buried bare copper cable, with additional earth rods, and shall be calculated, being recommended to use ieee std. Size and shape depend on soil resistivity, fault duration, area and geometry. This software has been designed using matlab as a mathematical tool.

It is a type of application software which is used for power engineering problems, which are transformed into mathematical expressions. 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. Sim grid markets cymgrd software and provides technical support as well as trainings. Dont forget to subscribe to our channel for more awesome videos. Methodology adopted for designing the grounding grid is as per ieee standard 802000. Simgrid markets cymgrd software and provides technical support as well as trainings. Design of substation grounding grid using edsa software ieee. Lanzoni october 2007 introduction grounding or earthing is the art of making an electrical connection to the earth. After graduation joe worked in the mining industry in northeastern minnesota for ten years. If you dont mind answering, i have a simple model that i am trying to obtain a gpr on, basically it consists of a utility power source, 444. The same test equipment is available for 60hz systems where the injection current and tuned voltmeters are set at 52 hz. Overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem.

In our opinion computer modeling is the only viable and ethical way to design a substation grounding grid. Two day national conference rteece2014 17th,18th january 2014 88 optimized design of substation grounding system. Cymgrd is a software program specialized in the substation grounding mat design. The problem is formulated as a mixedinteger linear. 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. This module can evaluate the estimate places for the danger voltage points in the grid and its. Easypower is partnering with the industryleading grounding and emi analysis. 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. Represents a new way to study large grounding systems. Ses implemented the first automated grounding grid design software in the early 90s. This brochure describes eaton s cyme cymgrd software which 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. Optimal design of substation grounding grid based on. The resulting earthing types are displayed both on the one line diagram and for the various connected cables. Electrical grounding analysis skm groundmat is a program for substation ground grid design and analysis.

The program can use uniform or two layer soil models. Design earthing or grounding grid using etap in english youtube. The ground grid module enables engineers to quickly design and analyze ground protection using advanced 3d technology that is integrated with the one line. Grounding grid design software computer algorithms for modeling ground systems are based on.

Power engineering software is software used to create models, analyze or calculate the design of power stations, overhead power lines, transmission towers, electrical grids, grounding and lightning clarification needed systems and others. Soil measurement data based on wenner fourpin method. Calculationofimportantdesignparametersforgroundingsystemsinsu. Earthing mat design for a power substation ms excel. Introduction in designing and construction of an electric substation, one of the most important issues that must be. Optimized design of substation grounding system using newly developed ieee compliant software issn. This voltage, gpr, is equal to the maximum grid current times the grid resistance. Civil and electrical engineers need pointed analyses that assure installations are fully secure for personnel and also sound and economical construction, connection and operation of the grids along with proper equipment protection. List all applicable standards for grounding system design calculations for domestic, commercial and industrial premises, list acceptable values for earthing resistance, calculate soil resistivity by using ground testers that apply the wenner 4point method, provide a professional design concept for any grounding system.

Home download center electrical software earthing mat design for substation. Is a module for earth grid calculation and design in the frequency domain, including soil analysis and represents the state of the art of grounding software. Optimal design of substation grounding grid based on genetic. The maximum touch voltage within a mesh of a ground grid. It had a characterbased dosbased menu interface and was called. Grounding design calculations part seventeen electrical. It was restricted to rectangular grids buried in uniform or twolayer horizontal soils. The main purpose of this work is the development of an optimization model for the design of the grounding grid in electrical substations. Mortezaeei 2 1 electrical engineering department, seraj higher education institute, tabriz, iran, n.

Account for the presence of transmission lines, distribution lines or cables connected to the grounding system, i. Grounding grid is very important for the lightning protection design of the substation. Introduce a final report contains all design details. Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 801986 code. Eatons 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. Milan asks, i am trying to understand how to design a substation grounding system and fault current is something i am not getting. This paper presents the design of 220kv substation grounding grid with difference resistivity soil according to horizontal and vertical two layer soil model is structure using the malt program of. Ground grid systems software ground grid design ieee 80. Calculationofimportantdesignparametersforgroundingsystemsi. Engineering design of grounding grid in substations is.

Grounding grid dimensioning for electrical substations, primary and secondary transmission and distribution, telecommunications, lightning protection and lowvoltage installation with over 25 years of development, tecat plus is the best cost benefit solution on the market, with full numerical calculations in 4 layer soil one of the best in. The large number of nodes in these extensive earth. 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. Effective grounding system design of substation grounding grid using edsa software ieee conference publication.

Etap model for earth mat design etap model for earth. In this paper two different approaches were used to achieve the best design configuration of grounding grid as increasing sequential multiplication factor. Etap which is an intelligent software for many applications. Achievement of the best design for unequally spaced. The best software for this purpose is electrical transient analyzer program etap. Importance of an adequate substation ground grid design. Grounding grid dimensioning for electrical substations. The grounding system parameters can be measured without deenergizing the substation. Pdf grounding system design in electrical substation. Optimal design and development of software for design of. Design of substation grounding grid using edsa software.

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. Optimized design of substation grounding system using newly. The results confirmed both the ground grid design and the effectiveness of the test equipment. It may be used to make a new design for new grids or to optimize and enhance an existing one of any shape.

Skm groundmat is a program for substation ground grid design and analysis. Wellman, optimal ground grid design for large ehv substations with autotransformer, publication no. The process is a combination of science and art as opposed to pure science, because it is necessary to test the. Substation system software applications cyme grids eaton. Fast analysis of irregular largescale renewable ground grid application. Even ieee std 80 recommends the use of computer software to calculate grid resistances, and mesh and step voltages, and also to create potential gradient visualisations of the site. It is a type of application software which is used for power engineering problems, which are transformed. Eatons cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids. The cross section of the buried cable should calculated in accordance with the value of the phasetoearth short. This rise in voltage of the grounding grid is referred to as the ground potential rise gpr, and is proportional to the magnitude of the fault current, and the ground resistance of the grounding grid. Safegrid earthing electrical calculations and design software. 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. Importance of an adequate substation ground grid design 3. Aspix calculates the grid resistance, and touch and step voltages for grids of any shape.