Three dimensional grounding grid design

This study presents an advanced methodology and a computer model for analysis of grounding systems conforming to standards IEEE Std 80-2000, IEEE Std 81- 1983 and IEEE Std 837-2002. The methodology and computer program is validated with actual system measurements. The accuracy of computer algorithm is dependent on how well the soil model and physical layout reflect actual field conditions. The tolerable voltage limits and the maximum predicted voltage values are calculated using empirical formula in given standard. The step, touch and mesh voltages and hot zones are calculated according to the recommendations in given standard and the differences between them are investigated and clarified. The simulations are carried out with the aim to verify the possibility of introducing some practical design criteria helpful for engineering applications. Substation grounding grid design and analysis module is specially designed to help engineers optimize the design of new grids and reinforce existing grids, of any shape, by virtue of easy to use, built-in danger point evaluation facilities.