Efficient reduction of fault current through the grounding grid of substation supplied by cable line

摘要: The paper presents an analytical procedure suitable for the determination of part ground fault current emanating from substation grounding grid in conditions when a particular measure has been taken to reduce it. practical realization this can be simply described as burying one bare copper wire certain length same trench cable feeding line. In case overhead line, similar is denoted expert literature "counterpoise". presented method enables quick and, purposes, sufficiently accurate evaluation providing maximum possible reduction current. conveniences result simplicity formulae realized at effective length.