Unlimited conductors and ground rods can be added. Step and touch potential profile throughout the grid area. 3-D graphical representation of various plots (by FEM method only), e.g. Integration and more effective utilization of single line diagram. The additional features of ETAP are summarized as follows: There are 3 simultaneous views of earthing system: 1) 3-D View 2) Soil view 3) Top view Optimization of earthing conductors and rods on the base of safety and cost (by IEEE method). This software analyzes the ground grid technically as well as economically.
ETAP facilitates an engineer to carry out ground grid design as well as analysis with considerations specified in various standards such as IEEE, IEEE and IEEE Moreover, this software also provides finite element modeling (FEM) of the ground grid for detailed analysis.
The best software for this purpose is ELECTRICAL TRANSIENT ANALYZER PROGRAM (ETAP). But in case of worst soil characteristics and some other conflictions regarding the values to be considered in modeling and design of earthing grid, it is quite acceptable and appreciable to use computer software to design and analyze the grounding mesh. INTRODUCTION As far as the soil model is uniform and continuous, the programs can be developed to analyze the performance of earthing system or in some case two layer soil models can also be adopted as good approximation for analysis purpose. Keywords- ETAP, step potential, touch potential, Finite Element Method (FEM), Ground potential rise (GPR). The soil almost exhibits vertical and horizontal variations due to the atmospheric factors and/or artificial treatments such as gravelling, add-on of some chemicals etc. Dhruv Balkrushna Luhar K.J.INSTITUTE OF ENGINEERING & TECHNOLOGY, SAVLI, Vadodara, India, Abstract Due to the complexity involved in the equations of modeling and the characteristics of soil in which the earth grid is to be buried, it is somewhat difficult to analyze ground grid in depth for the purpose of optimization. 1 MODERN APPROACH TO EARTHING SYSTEM DESIGN AND ITS ANALYSIS USING ETAP INTELLIGENT SOFTWARE Prof.
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