Examination of clearances during high voltage live-line working

Szabó, Dávid; Göcsei, Gábor; Németh, Balázs; Cselko, Richard; Rácz, Levente

doi:10.1109/eic43217.2019.9046546

Cited by 2 publications

(1 citation statement)

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“…If the combination of the real weather parameters results a worse case than the predicted one, applying the forecasted ampacity could lead to sag increment if the OHL is fully utilized. In these cases, it is important to take care of the reduced clearance whether it still meets the legal requirements of safety and security [9].…”

Section: The Effect Of Weather Forecast Uncertaintymentioning

confidence: 99%

Investigation of Power Line Sag Uncertainty in Day-Ahead DLR Forecast Models

Rácz¹,

Szabó²,

Göcsei³

et al. 2020

IFIP Advances in Information and Communication Technology

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Dynamic line rating method (DLR) is a novel and cost-effective way to extend power overhead lines (OHLs) transfer capacity based on real-time monitoring of the weather parameters in the vicinity of the conductor. Via DLR models not only real-time, but also day-ahead transfer capacity calculation is possible which is more important from the aspect of TSOs. It is important to mention, that these DLR predictions are based on weather forecasts that usually has some uncertainty. The aim of the paper is to identify the potential risk of forecasted power line ampacity due to uncertain weather forecast. To investigate this rarely studied topic, several simulations were carried out applying real power line parameters and forecasted weather data. The results of the simulations showed that under unfavorable weather conditions the uncertainty of the weather prediction could significantly increase the sag of the OHLs if they fully utilized. To monitor the real-time state of the conductor's sag, a novel risk factor calculation method was also investigated that provides additional safety information for the system operators in real time.

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Section: The Effect Of Weather Forecast Uncertaintymentioning

confidence: 99%