Earth Mat Design Calculation

Find the area that the buried earth mat will cover.

Earth mat design calculation.

Earth mat design for 132kv substation in rivers state using etap pdf. The earthing grid can dis sipate the fault currents so. Important formulas for designing a substation grid earthing system. It is suggested that the use of a high resistivity surface layer is capable of improving the safety while designing substation earthing grid in high resistivity.

Duration of fault. Could u please explain me how to do the earth mat design for 220 132 33 kv outdoor gss which have 5 steps 135m 138m 141m 144m 147m. We have already given an introduction to substation earthing system in an article published earlier. The substation earthing system comprises of a grid earth mat formed by a horizontal buried conductors.

The cross section of the buried cable should calculated in accordance with the value of the phase to earth short circuit current but it is common to use the three phase short circuit current for this purpose. Can t do the earth mat design separately for each step and finally connect each steps together. Read about design of substation earthing system here. Design calculation are based on ieee80 2000.

Maximum symmetrical fault current. It will have a considerable impact on grid resistance. The average soil resistivity measured as. Today we are going to discuss the design of substation earthing system.

The grounding system in substation is very important. The large number of nodes in these extensive earth grids makes them a particular challenge but safegrid manages them with ease and elek have provided excellent technical support where necessary to help us with our designs. Calculations are performed in order to assess whether. We use safegrid earthing software for the design of earth grid on complex renewable energy projects including anaerobic digestion plants wind farms and solar farms.

In our analysis we have considered an area of 275m x 175m. For earth mat design for hv s stn. Difference between grounding earthing and bonding.