Reliability and Sensitivity Analysis of Transmission Lines in a Probabilistic EMC Context

Abstract

Uncertainty propagation plays an important role in electromagnetic compatibility when high safety standards are imposed. This paper addresses the safety assessment of transmission lines under uncertain radiated electromagnetic constraints. The purpose is to estimate the probability that the current at a terminal load exceeds a prescribed threshold. This paper details the basics of the most efficient methods specifically tailored to assess small failure probabilities. A focus is put on global and local sensitivity analyses that provide the analyst with important results regarding the design of transmission lines. This paper is illustrated with two application examples that highlight the strengths and limits of reliability assessment methods in light of physical interpretations of the obtained results.

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