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. Here are some additional ground mats that we provide to the. Cyme power engineering software and solutions substation. Design and analysis of ground grid system for substation using etap software and fdm code in matlab deep b. Sonagra3 1pg student 2, 3assistant professor 1 2 3electrical department, g. Earth mat design can be done by manual calculations as well as with the help of computer software.
Electricity association technical specification 41. Jul 15, 2015 our substation design solution reduces the amount of time to complete design and minimizes errors that cause rework during construction. 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. Safegrid earthing electrotechnik pty ltdelectrical. Can u send me the details required to design an earth mat for 3311 kv pss. Userfriendly data entry, efficient analysis algorithms and powerful graphical facilities render substation grounding software an efficient tool that helps the engineer arrive at. Is using cdegs for design of the substation earthing. Etap model for earth mat design etap model for earth. Home download center electrical software earthing mat design for substation. Electricity association technical specification 4124. Ses implemented the first automated grounding grid design software in the early.
Sep 12, 2014 overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. 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. This module can evaluate the estimate places for the danger. 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. 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. Sizing conductors a critical part of safety grounding is the. This voltage, gpr, is equal to the maximum grid current times the grid resistance. The intent of this guide is to provide guidance and information pertinent to safe grounding practices in ac substation design.
The purpose of a ground mat study is to provide for the safety and wellbeing of anyone that can be exposed to the. Code of practice for design of highvoltage openterminal stations. It may be used to make a new design for new grids or to optimize and enhance an existing one of any shape. Earthing mat design for a power substation ms excel. A good grounding system can also help prevent equipment damage during fault conditions, direct lightning strikes, etc. This software package offers powerful and intelligent functions that help electrical engineers design safe horizontal, arbitrarily shaped.
Design of groundmat for 11kv substation using auto grid. 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. Substation grounding grid design case study using matlab. Abstract the main purpose of this paper is to acquaint the reader with various types of grounding. 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. Grounding grid design using matlab for power substations. All substation earthing systems must be designed to ensure the following functional requirements are met.
The cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids and. Major substation earthing design, construct and commissioning. In a properly designed system, this gradient should not exceed the limits that can be tolerated by the. Program is designed as per ansiieee 80 code, it calculates step potential of switchyard, touch potential of. A ground grid mat study will determine if your substation grounding grid design is safe and will.
What does a good grounding of the power substation and. Grounding design calculations part seventeen electrical. 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 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. A welldesigned substation ground grid can uphold human safety for authorized personnel working in or around substations. Build custom earthing systems, using finiteelements determine a safe design overview features videos screenshots faq testimonials training overview determine earthing system performance, touch and.
Based on experience and on the substation ground bonding requirements. Design of earth grid for a 3311kv gis substation at a. Integrated grounding system design and testing gtpe. Fast analysis of irregular largescale renewable ground grid application. Design of grounding system for an electrical substation. This module can evaluate the estimate places for the danger voltage points in the grid and its adopting with ieee 802000 std. 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. 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. 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. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. 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. It uses a generalpurpose finite element algorithm for potential analysis and graphical facilities to validate ground system efficiency. Design of groundmat for 11kv substation using auto grid pro.
Ground grid systems software ground grid design ieee 80. You will explore soil characterization, modeling requirements, and data preparation procedures for substation ground system design and lightning shielding. Though manual calculation is a good, software tools ensure a detailed design so that the earth mat is. Optimized design of earthing system for substations with high soil.
Optimal design of substation grounding grid based on. Skm groundmat is a program for substation ground grid design and analysis. 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 safe buried earthing and grounding systems for applications including substations, power plants, transmission lines, transformers, mining, commercial and industrial sites. The cymgrd software enables choosing the most economical way for any installation. Guidelines for the design, installation, testing and maintenance of main earthing systems in substations.
Omega red group are the uk market leaders in the specialist design, supply, installation, testing and maintenance of electrical earthing and lightning protection systems. 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. Thank you for your question regarding substation design using cdegs and ieee std80 formulas. Design safe buried earthing and grounding systems for applications including substations, power plants, transmission lines, transformers, mining, commercial and.
Ieee std80 is the ieee guide for safety in ac substation grounding. Here, the design uses etap electrical transient analyzer program software. Some substation designs require fence grounding to be isolated from the main ground grid. Produce greenfield and brownfield designs up to 40 percent faster with bentley substation. Bhuj, india abstract substation grounding is a critical part of the overall electric power system. Design of earth grid for a 3311kv gis substation at a high. International journal of enginee ring trends and technology ijett volume 15 number 8. Design and analysis of ground grid system for substation.
It keeps the maximum voltage gradient along the surface inside and around the substation within safe limits during ground fault. 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. Resistance of surface material crushed rock thickness of surface material crushed rock depth of earthing grid conductor. Here are some additional ground mats that we provide to the electrical substation industry. Importance of an adequate substation ground grid design 3. 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. Calculation of maximum permissible touch and step voltages. 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. Eatons cymgrd software is a substation grounding grid design and analysis program specially developed to help engineers optimize the design of new grids. Fault level of the station can be calculated using softwares.
Substation grounding is critical part of substation design. The supporting data has been obtained from actual field tested at the substation. It begins with a simplified coverage of the basic principles in grounding design and follows with a stepbystep design procedure. 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. Ground mat earth grid design software simmi123 electrical 6 jul 08 18. The grounding grid system of a practical 220 kv substation is calculated by matlab program. Pdf earth mat design for 233kv substation in rivers. Electrical 20142018 sardar vallabhbhai institute of technology, vasad. Design of earthing grounding system in a substation grid. This course will comprehensively cover grounding system design procedures for safety and lightning shielding.
Avoid rework, reduce errors, and enhance collaboration with linked and crossreferenced 3d layouts and electrical drawings. Cymgrd is a software program specialized in the substation grounding mat design. In a properly designed system, this gradient should not exceed the limits that can be tolerated by the human body. 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. 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. Surge arresters or lightning arresters discharge the over voltage surges to earth and protect the equipment insulation from switching surges and lightning surges. Optimal design of substation grounding grid based on genetic. International journal of engineering trends and technology. The software analysis helps illustrate and support the grounding study results for your substation project. Design of groundmat for 11kv sub station using auto grid pro jawahar m assistant professor, dept.
Is using cdegs for design of the substation earthing system. Soil measurement data based on wenner fourpin method. Importance of an adequate substation ground grid design. Overview on etap capabilities in ground grid system design and analysis using ieee 80 standard and finite element method fem. All rus borrowers rus electric staff effective date.
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. Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 80. Ground mat earth grid design software electric power. It begins with a simplified coverage of the basic principles in grounding design and follows. A substation is assembly of large no of electrical. Earth mat minimizes the danger of high step or touch voltages in critical operating areas or places that are. The ground grid module enables engineers to quickly design and analyze ground protection using advanced 3d technology that is integrated with the one line. This module can evaluate the estimate places for the danger voltage points in the grid and its. 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. Etap model for earth mat design etap model for earth mat 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. Earth mat designing of substation free download as powerpoint presentation. In this video, i mentioned the basic steps for designing power substation grounding grid using custom codeprogram made under matlab environment. When a fault condition occurs, the grounding electrode grid must be sufficient to equalize potentials both in and around the substation.
The grid spacing will be closer in the proximity of electrical equipment, and will be connected at all conductor intersections. Earthing mat design for substation spreadsheet photo by input fields as per ansiieee std 801986 code. The use of substation grounding software allows for the rapid analysis of various design alternatives to choose an economical solution for any particular installation. 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. The manager substation design is the subject matter expert sme for the content and shall. Responsibilities the group manager works enablement is the process owner responsible for approving this reference. Speed project collaboration and coordination with the only software that lets you unite electrical and physical design. Ground grid systems software ground grid design ieee.