A Review Of Overhead Power Line Component Degradation Models

Abstract

This paper presents a literature review of degradation models for overhead power line (OHL) components. These models are important for informing decisions on when, where, and how to best renew parts of OHLs. The OHL components are grouped into the categories: conductors (the components that carry the electric energy), support structures (components that ensure the conductors are lifted overhead), and interfaces (the components that connect the conductors to the support structure). As found in the literature review, the available condition information, degradation processes, and failure modes varies between the three component categories. Thus, the suitability of the available approaches for degradation modeling, e.g., data-driven or physics-based, vary between the different categories. Another observation from the literature review is that degradation models have, over time, been expanded to better account for the condition information, attributes, and environmental loads on the individual components. Keywords: degradation models, lifetime models, overhead power lines, critical infrastructure, power distribution system, literature review

A Review Of Overhead Power Line Component Degradation Models