Ieee membership offers access to technical innovation, cuttingedge information, networking opportunities, and exclusive member benefits. The standard specifies the minimum requirements for an extended format but does not specify an encoding. In ieee guide for safety in ac substation grounding, ieee std. Ieee std80 is the ieee guide for safety in ac substation grounding. Safety limit calculations to ieee and iec standards. Designing safe and reliable grounding in ac substations. Computer software packages can be used to assist in earthing grid design by modeling and simulation of different earthing grid configurations. The equation numbers used in this paper refer to the numbers used in that standard for ease of crossreferencing. Ieee std 10121986 specifies the required content for an svvp. Fences the grounding conductor for fences required to be grounded by other parts of this code shall meet the requirements of rule 93c5 or shall be steelwire not smaller that stl wg no.
Design and analysis of substation grounding grid with and. Grounding standard 802000 with respect to the 1986. Bs en 50522, eicen50522, emi, en501221, iec 60079321, ieee, ieee std. How we answer impossible questions to design safe electrical earthing systems. The first part of this course will cover grounding and bonding according to the nec and other ieee standards. Ieee standard 7302014 software quality assurance processes. Members support ieees mission to advance technology for humanity and the profession, while memberships build a platform to introduce careers in technology to students around the world. Backward compatibility with 8bit cards is accomplished using special bus connectors that are.
Corrective and preventive action processes and root cause analysis process k. The content and qualities of a good software requirements specification srs are described and several sample srs outlines are presented. Ieee trial use standard for software quality assurance plans. Ieee standards interpretation for ieee std 801986 ieee.
Ieee standards association ieee sa is a leading consensus building organization that nurtures, develops and advances global technologies, through ieee. Provide benchmarks cases to compare the results of ieee std 80tm equations to commerciallyavailable software programs. We bring together a broad range of individuals and organizations from a wide range of technical and geographic points of origin to facilitate standards development and standards related collaboration. It is available for purchase at the following link. The cymgrd software is a substation grounding grid design and analysis. It was implemented in software, in the form of floatingpoint libraries, and in hardware. So far i am using documents ieee std 802000 and nesc 20. We will explain the basics concepts on why and how to ground. Find the most uptodate version of ieee 80 at engineering360. The standard is technically equivalent to the ieee std 802000 recommendations for corrections, additions or deletions should be addressed to. Provide benchmarks cases to compare the results of ieee std 80 equations to commercially available software programs.
An sdd is a representation of a software system that is used as a medium for communicating software design information. Ieee guide for safety in ac substation grounding ieee std 802000. Sharex sharex is a lightweight free and open source program that allows you to capture or record any area o. Ieee standards are ed works, and are not available free. Ieee 80 enhanced to improve understanding of standard for. Earthing design electrotechnik pty ltdelectrical calculations. The paper presents the seasonal effects on grounding by taken into consideration the design without considering seasonal factor and after considering the seasonal factor. Is using cdegs for design of the substation earthing. Touch voltage, step voltage, grid potential rise, safegrid earthing software, ieee std. Ieee has announced enhancements to ieee 80, ieee guide for safety in ac substation grounding. Ieee and its members inspire a global community through ieees highly cited publications, conferences, technology standards, and professional and educational activities.
The obtained results using both techniques are shown in table 2. The concept and use of safety criteria are described in clause 1 through clause 8, practical aspects of designing a grounding system are covered in clause 9 through clause, and. P80 guide for safety in ac substation grounding ieee sa. The std32 standard was created in the late 80s by ziatech who was a dominate player in the std80 marketplace. During its 23 years, it was the most widely used format for floatingpoint computation. Ieee 7541985 was an industry standard for representing floatingpoint numbers in computers, officially adopted in 1985 and superseded in 2008 by ieee 7542008, and then again in 2019 by minor revision ieee 7542019. This computer program can be used directly to determine the grounding. Curves in ieee std 802000 software program that models the power system as well as alternate paths formulas that compute the equivalent impedance of each alternate ground path and 10 should be determined on appropriate substation and is a question for glen barnes, luke clout. This paper presents a brief compilation of typical and particular cases of grounding systems calculation using procedures proposed by ieee std 80200, simulated by means of a software developed under the mathematical tool matlab, based on the finite elements method.
Ieee std 8020 guide for safety in ac substation grounding ieee std 812012 guide for measuring earth resistivity, ground impedance, and earth surface potentials of a ground system ieee std 3672012 recommended practice for determining the electric power substation ground potential rise and induced voltage from a power fault. Ansi standards ieee conferences, publications, and resources. Abstract this paper presents the equations for calculating safe touch and step voltage limits safety criteria in accordance with the latest international standards and compares the results. Inequality constraints of ground potential rise gpr, ground resistance rg, step voltage estep and touch voltage etouch, are based on latest edition of ansiieee std.
The chairman, electrical construction standard technical committee, co erb, 8th floor premium house, nasser road, p. Std32 adds many new features to the 8bit std80 standard including 16bit and 32bit data paths, larger memory maps, multiple busmasters, burst transfers, better interrupt handling, etc. This fourth edition of ieee std 80 is dedicated to the memory of j. The ia32, x8664, and itanium processors support an 80bit double extended extended.
This ieee standards product is part of the family on software engineering. Ieee members receive a discounted price, so if you are not, maybe one of your colleagues can purchase it for you. Ieee std 6052008, ieee guide for bus design in air. Testing through fall of potential with high current injection in grounding system in transmission line of 500 kv of santo antonio hps. The ieee 754 floating point standard recommends that implementations provide extended precision formats. The concept and use of safety criteria are described in clause 1 through clause 8, practical aspects of designing a grounding system are covered in clause 9 through. Ieee, pronounced eyetriplee, stands for the institute of electrical and electronics engineers. Provide benchmarks cases to compare the results of ieee std 80 tm equations to commerciallyavailable software programs. Institute of electrical and electronics engineers ieee. Ground grid systems software ground grid design ieee 80. Ieee std 8020 revision of ieee std 802000incorporates ieee std 8020cor 12015, 1226. Ieee std 802000 method also gives results for maximum allowable touch and step voltages, as well as the maximum real voltages in the system, for comparison of the calculations done by software. Ansi ieee std 7301980, 1980 the following topics are dealt with.
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. Estimating split factor using annex c in ieee 80 va3mnr electrical 31 jan 17 18. The viability of results of developed tool are compared with worldwide softwares like etap and cymgrd and showed to be reliable, friendly user interface, easy. This guide does not present requirements beyond those stated in ieee. Ieeee std 80 is by far and away the most controversial standard in the ieee library, and is considered one of.
This recommended practice is aimed at specifying requirements of software to be developed but also can be applied to assist in the selection of inhouse and commercial software products. Fence groudning ieee standard 802000 ieee electrical. This paper discusses an alternate design approach for substation grounding in areas that have high soil resistivity. Std 80 with the results given by some of the commercially available software. The use of the cymgrd software allows for the rapid analysis of various design alternatives to choose an economical solution for any particular installation. It discusses various methods for designing a substation grounding system without. In this work, a gui computer program has been develop ed. Ieee std 801986 has been revised as ieee std 802000. This paper presents a brief compilation of typical and particular cases of grounding systems calculation using procedures proposed by ieee std 80 200, simulated by means of a software developed under the mathematical tool matlab, based on the finite elements method. Ieee standard for configuration management in systems and. Ieee 80 guide for safety in ac substation grounding. Guidance in preparing software verification and validation plans svvps that comply with ieee std 10121986 are provided. This recommended practice is applicable to paper documents, automated.
P80 guide for safety in ac substation grounding the ieee. The guide presents more detailed information on the methods used to determine the current value to be used in the guide design equations and presents new equations to determine the current capabilities of bimetallic materials that can be used in ground grids. Behaviour of zinc oxide surge arresters under pollution. For equations that we derive, a lettering scheme is used.
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