Earth Mat Design Calculation

Maximum symmetrical fault current.

Earth mat design calculation.

We have already given an introduction to substation earthing system in an article published earlier. Today we are going to discuss the design of substation earthing system. Earth mat design calculation for 33 kv s stn for m s sukhbir agro energy ltd shahjahanpur u p. In our analysis we have considered an area of 275m x 175m.

The earthing grid can dis sipate the fault currents so. Earth mat design for 132kv substation in rivers state using etap pdf. Calculations are performed in order to assess whether. Find the area that the buried earth mat will cover.

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. Duration of fault. Is to be considered as 1 sec. The substation earthing system comprises of a grid earth mat formed by a horizontal buried conductors.

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. Read about design of substation earthing system here. Difference between grounding earthing and bonding. For earth mat design for hv s stn.

Can t do the earth mat design separately for each step and finally connect each steps together. 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. It will have a considerable impact on grid resistance. The grounding system in substation is very important.

Design calculation are based on ieee80 2000. 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. 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.