Discussion on DC Vertical Ground Electrode Design
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Abstract
The influences on DC vertical ground electrode design are analyzed in view of different operating conditions and layering of soil resistivity. Heating problem is more serious while continuous running time under rated current is longer. Radius of electrode well should be enlarged and the construction difficulties become higher, accordingly. Distribution of current releasing-density and step voltage are under the influence of different type of Layering of soil resistivity. The suggestions are given as follows: optimize the input criterion sensibly, reduce continuous running time under rated current, current releasing-density and step voltage of electrode. In addition, for vertical ground electrode , the impact to surroundings can't be reduced compared to horizontal ground electrode. The difference of impact to surroundings is small for different type of ground electrodes.
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