Advancing OHL Rating Calculations: Modeling Mixed-Convective Cooling and Conductor Geometry

Kopsidas, Konstantinos; Rahman, Shahnurriman Abdul; AlAqil, Mohammed; Rolfo, Stefano

doi:10.1109/tpwrd.2022.3197325

Cited by 3 publications

(2 citation statements)

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“…The important components of the electrical grid are overhead lines (OHLs) that are used for energy transmission and distribution to the users. Since constructing new transmission lines is time consuming and highly expensive, there is a push towards the increase in the current carrying capacity of the existing lines [3].…”

Section: Introductionmentioning

confidence: 99%

“…However, the HTLS conductors, like other overhead lines, are exposed to environmental conditions such as Sun's radiation, wind or ice loads, which can affect the conductor performance. For example, wind and ice loads can cause vibrations of varying frequencies and loading that may potentially damage conductors through fretting [3]. Also, excessive forces in the conductor may lead to its damage while excessive temperature may limit the conductor current carrying capabilities.…”

Section: Introductionmentioning

confidence: 99%

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Extended Characterization of an Optical Sag Sensor for High-Temperature Low-Sag Lines

Singh,

Fusiek,

Niewczas

2023

IEEE Sens. Lett.

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This paper reports on the extended characterization of an optical sag sensor to verify its suitability for monitoring sag and temperature in high-temperature low-sag (HTLS) overhead lines. The sensor utilizes fiber Bragg grating (FBG) technology and can be integrated with the photonic voltage and current sensors that were previously developed by the authors. The response of the sag sensor was evaluated experimentally in the laboratory for temperatures from -20 ˚C to 180 ˚C and for forces up to 3 kN. The sensitivities of the sag sensor to force and to temperature estimated from the experiments were around 0.116 nm/kN and 30 pm/˚C, respectively. The change in the sag sensor sensitivity to force was approximately 25% within the considered temperature range and the change in the sag sensor sensitivity to temperature was 2% within the considered force range. It was demonstrated that the proposed sensor can provide force and temperature measurements within the considered ranges and should be suitable for HTLS lines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%