Achievement of the best design for unequally spaced grounding grids

Ground potential rise of faulty substations having equal and unequal spacing grounding grids conductors

“…By the analysis of the calculated data represented in this figure, it is concluded that the touch voltage along the centre conductor reaches its lowest value when the compression ratio for this grid reaches 0.538, it means that, the OCR obtained gives the most save and economical grid design, and the best arrangement of grounding conductor span is achieved, so the minimum touch voltage and thus, the optimal design for grounding grid is satisfied. These findings are in agreement with results obtained by the authors [17, 18].…”

A Diagnosis of Grounding Grid Corrosion Defects Based on Branch Voltage Disturbance

“…In the research of grounding grids, the optimal design and grounding performance of grounding grids are generally studied abroad [16], [17]. In China, many scholars are committed to the study of corrosion diagnosis, because the corrosion of the old substation grounding grid is common, and the degree of corrosion is relatively serious.…”

Evaluation of sustainability of microgrid grounding grid design under varying soil conditions through estimation of touch, step voltages and novel methods of earthing

“…Sustainable GG design can be attained by analysing GG parametrically [13,14]. Although, many parametric and economical analysis of GG design, as well as estimation of soil structure, nearby GG designs are done in the past, in [15][16][17][18][19][20][21][22][23]. But, none of them analyse the sustainability of optimal GG design under varying soil conditions, estimating the impact of the top layer (TL), middle layer (ML) and bottom layer (BL) soil resistivities and thickness of the top (TLT) and the middle layer (MLT) individually.…”