Electrical Transmission and Substation Structures ...

wind Loading: Uncertainties and Honesty Suggest Simplification Alain H. Peyrot, PhD, PE1 1 Emeritus Professor of Civil Engineering, Univ. of Wisconsin, Madison, WI, USA Past President (1992 to 2008), Power Line Systems, Madison,WI, USA ABSTRACT This paper discusses some of the recent wind loading procedures for the design of Transmission lines (NESC, ASCE, IEC, CENELEC, etc.). It provides some detailed background behind their formulas for gust factors, span factors and gust response factors. It discusses the uncertainties inherent in each one of the parameters and assumptions behind the formulas: wind storm type, reference wind , terrain roughness, profiles, gustiness, time and spatial correlations, dynamic response, wind direction, drag coefficients, etc. It provides some examples to illustrate the current lack of consensus and to identify the important design parameters.

Wind Loading: Uncertainties and Honesty Suggest Simplification Alain H. Peyrot, PhD, PE 1 1 Emeritus Professor of Civil Engineering, Univ. of Wisconsin, Madison, WI,

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  Electrical, Structure, Transmissions, Substations, Wind, Electrical transmission and substation structures

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