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. Lightning protection design the conventional way, delivered unconventionally. Typically, the site engineer or equipment manufacturers specify a resistancetoground number. The cross section of the buried cable should calculated in accordance with the value of the phasetoearth short. Safegrid earthing electrotechnik pty ltdelectrical. The designer must use suitable cdegs earthing design module to model the grid and any third party infrastructure if it has been affected by development of the relevant substation infrastructure. Earthing design instruction edi0005 distribution earthing test earthing design instruction edi0004 earthing design, construction and testing of overhead transmission mains earthing design instruction edi 100 distribution earthing design, construct and test. The resulting earthing types are displayed both on the one line diagram and for the various connected cables.
The annex h in ieee standard 8020 contains benchmark case results for comparing and evaluating software tools and methodologies used for the analysis of substation earthing. And, in some of the most active regions of the planet. The national electric code nec states that the resistancetoground shall not exceed 25 ohms for a single electrode. Design and analysis of substation grounding grid with and. Electrical earthing, grounding, methods of earthing, types of earthing, components of earthing and its specifications in respect to electrical earthing for electrical installations. This means if you are looking for an effective lighting design service. Whilst earthing services electrical earthing designs all come accompanied by a professional cad format drawing of the sites electrical earthing system, the company recognises that sometimes a little more information can help installation contractors interpret the information more easily and then achieve a more faithful reflection of the design. The question of how a system shall be earthed is governed by the regulation.
A grounding design starts with a site analysis, collection of geological data, and soil resistivity of the area. Grounded official grounding earthing information products. Xgslab is one of the most powerful software for grounding system analysis, electromagnetic fields, interference and lightning analysis and the only software on the market that takes into account both en and ieee standards. With the advent of technology, computeraided software design of earthing and lightning protection systems have assumed greater importance and significance. Introduction to lightning protection and earthinggrounding.
Design safe buried earthing and grounding systems for applications including substations, power plants, transmission lines, transformers, mining, commercial and. Build custom earthing systems, using finiteelements determine a safe design overview features videos screenshots faq testimonials training overview determine earthing system performance, touch and step voltage safety compliance. Cdegs worldwide leader in grounding, earthing, lightning. Software products ses india grounding, earthing, software. Soil measurement data based on wenner fourpin method. Earthinggrounding design software latest features and. 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. Important formulas for designing a substation grid earthing system. 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. It is cumbersome to install only one or two pits in a day. The results compare the simple equations from ieee std 80 with the results given by some of the commercially available software such as cdegs, etap, sgw, sdworkstation. Grounding design calculations part seventeen electrical. Grounding mat, earthing grounding sleep mat 54x 71 perforated design 100% conductive carbon leatherette earthing mat, fits for full size 3.
Indepth analysis, better accuracy, optimization without compromises are the hallmarks of computer software based design. Represents a new way to study large grounding systems. After modeling the area, we will engineer an electrical grounding system design that will meet your performance objectives. 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. 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. 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. High and medium voltage electricity ac substations. As the experts in electrical grounding solutions, we use specialized design software to model and build an electrical grounding system design based on the soil data, design goals, and other factors. Feb 12, 2020 safegrid software determines earthing system performance, touch, and step voltage safety compliance. Know design steps for grounding systems, know the required field data for grounding systems design, determine grounding requirements from soil resistivity results, analyze field and tests data that will be used for grounding systems design, distinguish the different grounding systems included in domestic, commercial and industrial facilities. Electrical earthing grounding system design earthing services. Grounding provides amazing healing, calming and balancing effects on our bodies. Using online earthing calculators grounding design calculations part nine.
Sess various subpackages constitute a powerful set of integrated engineering software tools designed to accurately analyze problems involving grounding earthing, lightning, electromagnetic fields, electromagnetic interference including acdc interference mitigation studies with a global perspective, starting literally from the ground up. Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 801986 code. Multigroundz plus, rightofway pro, sestlc pro, sesenviroplus and sesshield3d software packages. Computer software packages can be used to assist in earthing grid design by modeling and simulation of different earthing grid configurations. The earthing system must be designed using latest version of the cdegs design software package. Lightning protection design, earthing system design lightning protection for buildings design duration.
Grounding or earthing reconnects our bodies to earths energy. An important aspect of substation grounding system design is the calculation of the ground resistance offered by the grounding grid, and the values of the mesh and step voltages on the surface. The main purpose of this work is the development of an optimization model for the design of the grounding grid in electrical substations. Design safe buried earthing and grounding systems for applications including substations, power. Ground grid systems software ground grid design ieee 80. Grounding system modeling, grounding grid representation, earth conductivity and connected power system. The problem is formulated as a mixedinteger linear. Autogrounddesign worldwide leader in grounding, earthing. Abbs opr designer software has been developed to simplify lightning protection system design especially for ese solutions. Etap model for earth mat design etap model for earth mat design. Pdf grounding system design in electrical substation. It is the starting point of any electrical earthing system design. Grey matters has a unique mix of specialist experience covering global lightning protection design solutions.
Practical guide to electrical grounding systems and applications. 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. Current distribution, electromagnetic fields, grounding and soil structure analysis. Conventional earthing the conventional system of earthing calls for digging of a large pit into which a gi pipe or a copper plate is positioned amidst layers of charcoal and salt. Its cdegs suite of software packages is the state of the art in this field of expertise and an industry reference worldwide. Earthing mat design for a power substation ms excel. The substation ground grid design also takes into consideration of the freezing and raining season. To connect the metallic conductive parts of an electric appliance or installations to the earth ground is called earthing or grounding. Calculationofimportantdesignparametersforgroundingsystemsinsu. Home download center electrical software earthing mat design for substation.
Cdegs earthing software shifting the system design industry. Design parameters grounding grid design analysis consists of 5. System grounding and earthing types analysis software etap. This software is ideal for consultants and contractors working in the field of lightning protection, as it has been designed to deliver the optimal, flexible solution for ese lightning protection in the shortest time. Fast analysis of irregular largescale renewable ground grid application. Lp consultants international pvt ltd 215,120 views 5. Software tool for grounding system design request pdf. An accurate computation of grounding resistance and surface potential distribution of grounding systems is a prerequisite for the qualitative and reliable design. 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. Grounding earthing design package for large substations, power plants, hvdc substations and electrode design, solar power plants and hydroelectric power plants. The general purpose of earthing system is to protect life and property in the event of 5060 hz faults shortcircuit and transient phenomena lightning, switching operations. Design of earthing grounding system in a substation grid. Grounding design calculations part seven and grounding design calculations part eight. The values of these parameters have to be kept within certain established emits, keeping.
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