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H. E. Fiegel

Bio: H. E. Fiegel is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 19 citations.

Papers

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Journal ArticleDOI
TL;DR: In this paper, the minimum shielding failure current causing flashover of line insulation is highly dependent upon insulator string flashover modelling and, also, markedly higher than that calculated according to the relevant IEEE Std 1243-1997 simplified expression.

43 citations

Journal ArticleDOI
TL;DR: Lightning overvoltages were causing problems on overhead lines well before Tesla and Edison argued over the merits of ac and dc. Many of the overvoltage protection methods for distribution lines follow the same philosophy as that used for telegraph and telephone lines as mentioned in this paper.
Abstract: Lightning overvoltages were causing problems on overhead lines well before Tesla and Edison argued over the merits of ac and dc. Many of the overvoltage protection methods for distribution lines follow the same philosophy as that used for telegraph and telephone lines. Modern guides for improving distribution-line lightning performance, such as IEEE 1410, still distinguish between unpreventable outages caused by direct flashes to phase conductors and preventable faults that are caused by flashes to objects or the ground near the line.

40 citations

Journal ArticleDOI
TL;DR: In this paper, a geometrical model technique, involving comparison of lightning voltages measured on the models with those obtained from linear traveling wave calculations, enables realistic estimation of the value ascribed to tower surge impedance, an important parameter in the calculations.
Abstract: A method has been developed to predict the probability of a double circuit outage on double circuit lines. Traveling wave techniques are used to account for nonlinearities such as corona, attenuation, and phase conductor flashover as its time iterative approach enables alteration of design parameters at each time increment. A geometrical model technique, involving comparison of lightning voltages measured on the models with those obtained from linear traveling wave calculations, enables realistic estimation of the value ascribed to tower surge impedance, an important parameter in the calculations.

33 citations