Icing Analysis of Klece-Logatec Transmission Line with Two-Level Icing Model

FLEXITRANTORE as a HORIZON 2020 project aims to develop an integrated platform for the next generation flexible electricity transmission system. During the project the investigation and implementation of state-of-the-art technologies will be realized, like storage systems, new market designs and business models, Dynamic Line Rating (DLR) technology or de-icing methodologies. The objective of FLEXITRANTORE's WP7 work package is to develop a DLR based anti-icing technology for transmission lines, therefore make the grid more reliable [1]. The aim of this paper is to present the investigation of complex icing system for transmission grid. The introduced investigation forms a two-level method, which in the first stage gives a warning for system operators, when the environmental factors are appropriate for ice formation on conductors. Then a mathematical model forecasts the radius and mass of the expected ice-layer. The second level of the system monitoring the ice-formation on the phase conductors with line-monitoring sensors, thus the system operators get real information about the line condition. The operation of the methodology is also investigated, which are also presented through case studies.