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. Integrated grounding system design and testing gtpe. Oct 30, 2012 in this video, i mentioned the basic steps for designing power substation grounding grid using custom codeprogram made under matlab environment. Design of grounding system for an electrical substation. 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.
International journal of enginee ring trends and technology ijett volume 15 number 8. 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. Thank you for your question regarding substation design using cdegs and ieee std80 formulas. A ground grid mat study will determine if your substation grounding grid design is safe and will. Etap model for earth mat design etap model for earth. Tying the fence ground into the main ground grid, as shown in fig.
It begins with a simplified coverage of the basic principles in grounding design and follows. 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. Cymgrd is a software program specialized in the substation grounding mat design. Importance of an adequate substation ground grid design 3. Is using cdegs for design of the substation earthing system. Substation grounding grid design case study using matlab vikram patel1 a. Fast analysis of irregular largescale renewable ground grid application. Grounding grid design using matlab for power substations. 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. In this video, i mentioned the basic steps for designing power substation grounding grid using custom codeprogram made under matlab environment. Optimal design of substation grounding grid based on. Sep 12, 2014 overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem.
The elevated design gives the substation employee the ability to be on an elevated above the snow line platform, as well as a grounded mat. The supporting data has been obtained from actual field tested at the substation. Some substation designs require fence grounding to be isolated from the main ground grid. A good grounding system can also help prevent equipment damage during fault conditions, direct lightning strikes, etc. 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 grids and reinforce existing grids, of any shape, by virtue of easy to use, builtin danger point evaluation facilities. Responsibilities the group manager works enablement is the process owner responsible for approving this reference. The autogrounddesign software package is the only fully automated software tool that can analyze and design grounding systems without the intervention of the user between various phases of the design. Design of groundmat for 11kv sub station using auto grid pro jawahar m assistant professor, dept.
Cyme power engineering software and solutions substation. In a properly designed system, this gradient should not exceed the limits that can be tolerated by the. Fault level of the station can be calculated using softwares. The cymgrd software enables choosing the most economical way for any installation. The intent of this guide is to provide guidance and information pertinent to safe grounding practices in ac substation design. 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. Abstract the main purpose of this paper is to acquaint the reader with various types of grounding. Ses implemented the first automated grounding grid design software in the early.
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. Calculation of maximum permissible touch and step voltages. Though manual calculation is a good, software tools ensure a detailed design so that the earth mat is. 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. Substation grounding is critical part of substation design.
Overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. Substation grounding grid design case study using matlab. This course will comprehensively cover grounding system design procedures for safety and lightning shielding. Bhuj, india abstract substation grounding is a critical part of the overall electric power system. Avoid rework, reduce errors, and enhance collaboration with linked and crossreferenced 3d layouts and electrical drawings. It is designed to help optimize grid design or reinforce existing grids of any shape.
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. It may be used to make a new design for new grids or to optimize and enhance an existing one of any shape. Resistance of surface material crushed rock thickness of surface material crushed rock depth of earthing grid conductor. Can u send me the details required to design an earth mat for 3311 kv pss. Ieee std80 is the ieee guide for safety in ac substation grounding. Earth mat minimizes the danger of high step or touch voltages in critical operating areas or places that are. Grounding is used to get a reference point to measure voltage, to get a common return path for current and to physical connection of body. In a properly designed system, this gradient should not exceed the limits that can be tolerated by the human body. 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. Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 801986 code.
Grounding design calculations part seventeen electrical. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Optimal design of substation grounding grid based on genetic. Ground mat earth grid design software simmi123 electrical 6 jul 08 18. Though manual calculation is a good, software tools ensure a detailed design so that the earth mat is neither underdesigned hence safe nor this paper presents the complete design of earth mat for a 3311kv indoor gis gas insulated switchgear. Electrical 20142018 sardar vallabhbhai institute of technology, vasad vadodara, india abstractthe paper depicts about design of ground grid system for 6611kv rectangular substation. Design and analysis of ground grid system for substation using etap software and fdm code in matlab deep b. This software package offers powerful and intelligent functions that help electrical engineers design safe horizontal, arbitrarily shaped. Eatons cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids. Substation owners can now receive information to confirm system design specifications, while ensuring safety, with the new digital version of the smart ground multimeter sgm. The cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids and.
All substation earthing systems must be designed to ensure the following functional requirements are met. Here, the design uses etap electrical transient analyzer program software. Design of groundmat for 11kv substation using auto grid pro. 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 and analysis of ground grid system for substation. The use of substation grounding software allows for the rapid analysis of various design alternatives to choose an economical solution for any particular installation. Earthing mat design for a power substation ms excel. Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 80. Home download center electrical software earthing mat design for substation.
Substation design instruction sdi 505 minimum design and construction requirements for transmission and zone substations and switching stations substation design instruction sdi 511 auxiliary ac supply and switchgear substation design instruction sdi 517 busbars and support insulators. Skm groundmat is a program for substation ground grid design and analysis. Pdf earth mat design for 233kv substation in rivers. Sonagra3 1pg student 2, 3assistant professor 1 2 3electrical department, g. Based on experience and on the substation ground bonding requirements. Speed project collaboration and coordination with the only software that lets you unite electrical and physical design. Safegrid earthing electrotechnik pty ltdelectrical. It begins with a simplified coverage of the basic principles in grounding design and follows with a stepbystep design procedure. Design of earthing grounding system in a substation grid. Etap model for earth mat design etap model for earth mat design. The purpose of a ground mat study is to provide for the safety and wellbeing of anyone that can be exposed to the. Electricity association technical specification 41. Optimized design of earthing system for substations with high soil. Build custom earthing systems, using finiteelements determine a safe design overview features videos screenshots faq testimonials training overview determine earthing system performance, touch and.
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. Design of earth grid for a 3311kv gis substation at a. This module can evaluate the estimate places for the danger. All rus borrowers rus electric staff effective date.
This voltage, gpr, is equal to the maximum grid current times the grid resistance. You will explore soil characterization, modeling requirements, and data preparation procedures for substation ground system design and lightning shielding. Earth mat design can be done by manual calculations as well as with the help of computer software. Before the software can aid the substation design engineer, the electrical single line and ground grid for the substation will have to be designed and modeled within.
Is using cdegs for design of the substation earthing. Electricity association technical specification 4124. Earth mat designing of substation free download as powerpoint presentation. A substation is assembly of large no of electrical. The earthing systems for a substation must have a minimum design life of 50 years. Surge arresters or lightning arresters discharge the over voltage surges to earth and protect the equipment insulation from switching surges and lightning surges. Program is designed as per ansiieee 80 code, it calculates step potential of switchyard, touch potential of. The ground grid module enables engineers to quickly design and analyze ground protection using advanced 3d technology that is integrated with the one line. It keeps the maximum voltage gradient along the surface inside and around the substation within safe limits during ground fault. Design of earth grid for a 3311kv gis substation at a high. 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 of groundmat for 11kv substation using auto grid. Produce greenfield and brownfield designs up to 40 percent faster with bentley substation.
Earth mat is preferable to large substations because of space saving on the ground level due to substantial reduction of earth pits which leads to ease of coordination. Major substation earthing design, construct and commissioning. Userfriendly data entry, efficient analysis algorithms and powerful graphical facilities render substation grounding software an efficient tool that helps the engineer arrive at. The manager substation design is the subject matter expert sme for the content and shall. Electrical 20142018 sardar vallabhbhai institute of technology, vasad. The grounding grid system of a practical 220 kv substation is calculated by matlab program.
Jul 15, 2015 our substation design solution reduces the amount of time to complete design and minimizes errors that cause rework during construction. Code of practice for design of highvoltage openterminal stations. Soil measurement data based on wenner fourpin method. A welldesigned substation ground grid can uphold human safety for authorized personnel working in or around substations. International journal of engineering trends and technology. Ground mat earth grid design software electric power. Design safe buried earthing and grounding systems for applications including substations, power plants, transmission lines, transformers, mining, commercial and industrial sites. Our substation design solution reduces the amount of time to complete design and minimizes errors that cause rework during construction.
It uses a generalpurpose finite element algorithm for potential analysis and graphical facilities to validate ground system efficiency. Development of economical substation grounding system designer ieee guide 7 demonstrates guide lines for design of grounding systems for hv ehv ac substations, considering its performance at. Sizing conductors a critical part of safety grounding is the. The grid spacing will be closer in the proximity of electrical equipment, and will be connected at all conductor intersections. What does a good grounding of the power substation and. 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. This module can evaluate the estimate places for the danger voltage points in the grid and its.
When a fault condition occurs, the grounding electrode grid must be sufficient to equalize potentials both in and around the substation. Here are some additional ground mats that we provide to the. This module can evaluate the estimate places for the danger voltage points in the grid and its adopting with ieee 802000 std. Earthing mat design for a power substation ms excel spreadsheet. Ground grid systems software ground grid design ieee 80. Importance of an adequate substation ground grid design. Ground grid systems software ground grid design ieee.
891 1297 210 1086 324 1048 75 76 624 74 758 617 1118 1664 1446 1345 357 127 627 1425 494 1549 1246 769 1454 439 1154 758 631 502 1008 5 278