Research into action of surface soil moistening, drying or freezing on electrical characteristics of grounding device

Abstract

The analysis made has shown expediency of modernization rather than reconstruction of earth electrodes, after inspection of long operating substations grounding grids, via building a two-level structure. It will result in both technical and economic effects. The novelty of the results consists in studying, by means of a mathematical model, electrical characteristics of a two-level earth electrode versus the depth of surface soil drying or freezing.

Keywords

• substations
• grounding devices
• reconstruction
• modernization
• two-level structure