Inductive influence of HV cable lines in urban and suburban areas

Abstract

The developed methodology enables solving the problem of inductive influence of HV cable lines that appears in the urban surroundings, or when many relevant data are uncertain, or completely unknown. The problem appears as a consequence of the fact that many of surrounding metal installations are situated under the ground and cannot be visually determined or verified. The developed methodology enables compensation of deficiency of all unknown, but relevant data. This has been achieved by introducing into the developing procedure a fictitious (equivalent) cable screen substituting the screening effect of all, known and unknown, surrounding metal installations including the screens of the considered line. The application of the method implies the on-the-site measurements and the calculation procedure based on the here derived analytical expressions.