Substation the basics of a substation configuration and. Cdegs earthing software shifting the system design industry. Home download center electrical software earthing mat design for substation. Sds substation design software experience the best of what modern substation design has to offer. The earthing system must be designed using latest version of the cdegs design software package. The grounding grid provides a common ground for the electrical equipment as well all the metallic structures. The cross section of the buried cable should calculated in accordance with the value of the phaseto earth short.
Cymgrd, substation grounding program the cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new. In this paper, a real time case study has been considered and the design was done. Design of substation earthing grid can be very challenging in the twolayer soils especially when the bottom layer soil resistivity is higher than that of the top layer. Design parameters grounding grid design analysis consists of 5. Software products ses india grounding, earthing, software. List all data that must be known in the starting of grounding system design calculations for ac substation, facilitate the design process by using the auto excel mathematical functions in. Video 1 earthing of ac substation basic part 1 youtube. Earthing design services when building or upgrading hv electrical services, one of the most important stages of the design process is the hv earthing system design. This paper is to provide information pertinent to safe.
Multigroundz plus, rightofway pro, sestlc pro, sesenviroplus and sesshield3d software packages. Introduction testing of earthing systems enables confirmation of the design. The manager substation design is the subject matter expert sme for the content and shall. Power substation design calculations a checklist of 18. The designer must use suitable cdegs earthing design module to model the grid and. As it is well known, proper design of the grounding system is most important part of the whole project of. Cdegs c urrent d istribution, e lectromagnetic interference, g rounding and s oil structure analysis is a powerful set of integrated software tools designed to accurately analyze a variety of electromagnetic related problems encountered in all industries involving electric networks. Earthing design electrotechnik pty ltdelectrical calculations. Pdf grounding system design in electrical substation. The substation grounding system comprises of a grid earth mat formed by a horizontal buried conductors. Before 1960s the design criterion of substation earthing system.
There are national and international standards available, which provide empirical formulae for the calculation of earthing design parameters and shock. Substation design suite is a proven technology which provides 3d as well as 2d design. We have already given an introduction to substation earthing system in an article published earlier. Design and analysis of ground grid system for substation. Iec based en 50522 earthing of power installations exceeding 1 kv a.
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. Substation sub bass virtual workstation from dope kitz is a high octane, easily customizable virtual instrument for both mac and pc that gives you a collection of amazingly huge sub bass and synth. Important formulas for designing a substation grid earthing system. 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. This paper is to provide information pertinent to safe earthing practices in ac substation design and to establish the safe limits of potential difference under normal and fault conditions. 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. The earthing system also ensures that no thermal or. Cdegs is a computerbased electrical engineering modeling software program. 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.
This became enforceable in 2012 across the eu, where the standard explicitly recognises the role that revolutionary cdegs earthing software now plays in compliant electrical earthing design. 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. Safegrid earthing and grounding design software youtube. Earthing mat design for a power substation ms excel. Part 2 will cover the tolerable step and touch voltage. In our opinion computer modeling is the only viable and ethical way to design a substation grounding grid. Safegrid earthing electrotechnik pty ltdelectrical. And supersedes bs 7354 1990 code of practice for the design of highvoltage openterminal stations. Electrical 20142018 sardar vallabhbhai institute of. Design of substation grounding grid using edsa software. Cdegs is a computerbased electrical engineering modeling software program that uses ieee 80 calculations as a base. Software tool for grounding system design request pdf.
Etap model for earth mat design etap model for earth mat design. Program is designed as per ansiieee 80 code, it calculates step potential of switchyard, touch potential of. Cdegs c urrent d istribution, e lectromagnetic interference, g rounding and s oil structure analysis is a powerful set of integrated software tools designed to accurately analyze a variety. Servicing a broad range of clients in the electricity distribution, transmission and generation industry and in the construction sector worldwide, our engineers are widely respected as leaders in this safety critical area. The autogrounddesign software package is the only fully automated software. Cdegs worldwide leader in grounding, earthing, lightning. Design and analysis of ground grid system for substation using etap software and fdm code in matlab deep b.
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. 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. Eatons cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids. As it is well known, proper design of the grounding system is most important part of the whole project of the. Substation design suite is a proven technology which provides 3d as well as 2d design module with capabilities of providing a full specification for a complete substation.
Effective grounding system design is important as it deals with personnel safety and protection of electrical equipment. This paper deals with design of the substation grounding system by using computer. Cdegs earthing software shifting the system design. Earth resistance software including powertools for windows and arc flash hazard analysis. Electrical 20142018 sardar vallabhbhai institute of technology, vasad vadodara, india abstractthe paper depicts about design of ground grid system for 6611kv rectangular substation. This became enforceable in 2012 across the eu, where the standard explicitly recognises the.
Earthing design service utilising cdegs software package earthing system audits ea technologys earthing system audit provides an essential assessment of the earthing system in and around substations and other power assets, along with the associated maintenance procedures. 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 system modeling, grounding grid representation, earth conductivity and connected power system. Speed project collaboration and coordination with the only software that lets you unite electrical and physical design. As part of the earthing calculations design safety brief. Design of substation grounding grid using edsa software abstract. Ground grid systems software ground grid design ieee 80. In this article, i will share 18 design studies or calculations that will set you up to create a beautiful substation. Ea technologys earthing system audit provides an essential assessment of the earthing system.
The main purpose of this work is the development of an optimization model for the design of the grounding grid in electrical substations. Responsibilities the group manager works enablement is the process owner responsible for approving this reference. Highvoltage equipment, substructures, cable ducts, wires, tubes, clamps, roads and fences can be easily selected from a comprehensive library and placed as intelligent 3d objects on a voltagedependent grid. Bs 7430 earthing protection, was similarly updated in 2011. This paper presents the design of earthing system for 2 kv substations and simulation for calculation of required parameters. Produce greenfield and brownfield designs up to 40 percent faster with bentley substation. The problem is formulated as a mixedinteger linear. User guide secondary substation earthing design tool icp.
Ea technology uses the latest computer modelling software to create a safe environment for people and equipment. The function of an earthing and bonding system is to provide an earthing system connection to which transformer neutrals or earthing impedances may be connected in order to pass the maximum fault current. Earthing design service utilising cdegs software package. The grounding grid provides a common ground for the electrical equipment as well all the metallic structures in the substation.
Grounding design calculations part seventeen electrical. Grounding earthing design package for large substations, power plants, hvdc substations and electrode design, solar power plants and hydroelectric power plants. The earthing design process the design of an earthing system for a small distribution substation is, in essence, no different to that of any larger substation, and in fact can be more onerous due to close proximity to other systemsservices, and direct connection via cable sheaths to consumers premises. Earthing of ac substation basic part 1, consist of basics about earthing design in ac outdoor substation. Basics of designing power substations 3 phase associates.
Design safe buried earthing and grounding systems for applications including substations, power plants, transmission lines, transformers, mining, commercial. Is using cdegs for design of the substation earthing. Substation sub bass virtual workstation from dope kitz is a high octane, easily customizable virtual instrument for both mac and pc that gives you a collection of amazingly huge sub bass. The cross section of the buried cable should calculated in accordance with the value of the phasetoearth short. Design safe buried earthing and grounding systems for applications including substations, power plants, transmission lines, transformers, mining, commercial and. 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. Is using cdegs for design of the substation earthing system. Etap model for earth mat design etap model for earth. An introduction to grounding calculations and why they are.
Optimized design of earthing system for substations with. Our earthing solutions experts have pushed the boundaries in electrical power earthing for more than 15 years. The construction scope of work includes the procurement, installation and commissioning of the lighting protection system such as lightning masts and associated earth stakes, overhead earth wires, down conductors, fittings and connections to the substation earthing system. Optimized design of substation grounding system using newly developed ieee compliant software issn.
Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 801986 code. Earthing calculations safe earthing system design forget. A variety of advanced solvers provide adapted approaches to. Avoid rework, reduce errors, and enhance collaboration with linked and crossreferenced 3d layouts and electrical drawings. Optimized design of substation grounding system using. Sep, 2017 an introduction to grounding calculations and why they are necessary. Responsibilities the group manager works enablement is the. Know the grounding design procedure for ac substations, performing grounding design calculations for ac substations, use the excel spreadsheets for grounding system design for domestic, commercial and industrial facilities and ac substations. Design of earthing grounding system in a substation grid. Groundingearthing design package for large substations, power plants, hvdc substations and electrode design, solar power plants and hydroelectric power plants. Know the grounding design procedure for ac substations, performing grounding design calculations for ac substations, use the excel spreadsheets for grounding system design for. Today we are going to discuss the design of substation earthing system.
Jul, 2017 earthing of ac substation basic part 1, consist of basics about earthing design in ac outdoor substation. The construction scope of work includes the procurement, installation and commissioning of the lighting protection system such as. The cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids and. An introduction to grounding calculations and why they are necessary. The substation ground grid design also takes into consideration of the freezing and raining season. Safegrid earthing electrotechnik pty ltdelectrical calculations. Before 1960s the design criterion of substation earthing system was low earth resistance. List all data that must be known in the starting of grounding system design calculations for ac substation, facilitate the design process by using the auto excel mathematical functions in performing the calculations, provide a professional design concept for any grounding system of ac substation as per standard ieee 802000. Design and analysis of substation grounding grid with and. The first step in designing a power substation is to design an earthing and bonding system go to content earthing and bonding. What does it take to design a masterpiece of a substation. Optimized design of substation grounding system using newly. The ground grid module enables engineers to quickly design and analyze.
Computer software packages can be used to assist in earthing grid design by modeling and simulation of different earthing grid configurations. The earthing design process the design of an earthing system for a small distribution substation is, in essence, no different to that of any larger substation, and in fact can be more. 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. Lightning protection design, earthing system design lightning. Two day national conference rteece2014 17th,18th january 2014 89 criterion for substation earthing system was low eart hing.
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