Zusammenfassung

Step and touch potentials at transmission line structures are sonet imes important parameters in the design of the grounding system . To have confidence in conventlonal (deterministic) methods of potential calculation, worst-case values of the design parameters must be as1rnmed . This often leads to overly pessimistic results. A probabilistic approach enables core realistic values to be obtained with the same degree of conf idcnce . A study has recently been performed to calculate the probability distributions of step and touch potentials in Ontario Hydro 230 kV and 500 kV networks. This paper desert bes analytical and computational aspects of the efficient program developed during the course of the Sludy and presents a number of il lustrative examples .

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