The goal of this paper is the evaluation of the loss of life fractions as well as the life of cable for 500-kV DC cables with XLPE insulation under pre-qualification test load cycles. A previously developed ad-hoc MATLAB code was refined to consider two HVDC cables, the first one has a copper conductor with 2000 mm2 cross-section, while the second cable has an Aluminum conductor with 2500 mm2 cross-section. The time-varying temperature and electric field profiles are calculated. Then, the fractions of life lost and the cable life at five radii within the insulation wall are evaluated via the electrothermal life model in the Miner's law framework. A comparison between the field profiles, the life fractions lost, and the life of cable insulation calculated by means of the rigorous and the approximate method for the electric field is carried out.
Diban, B., Mazzanti, G., Diaz, R.E. (2025). Life Estimation of Extruded HVDC Cables Under Prequalification Test Conditions. New York : Institute of Electrical and Electronics Engineers Inc. [10.1109/aeithvdc66044.2025.11079540].
Life Estimation of Extruded HVDC Cables Under Prequalification Test Conditions
Diban, Bassel
;Mazzanti, Giovanni;Diaz, Rolando Ezequiel
2025
Abstract
The goal of this paper is the evaluation of the loss of life fractions as well as the life of cable for 500-kV DC cables with XLPE insulation under pre-qualification test load cycles. A previously developed ad-hoc MATLAB code was refined to consider two HVDC cables, the first one has a copper conductor with 2000 mm2 cross-section, while the second cable has an Aluminum conductor with 2500 mm2 cross-section. The time-varying temperature and electric field profiles are calculated. Then, the fractions of life lost and the cable life at five radii within the insulation wall are evaluated via the electrothermal life model in the Miner's law framework. A comparison between the field profiles, the life fractions lost, and the life of cable insulation calculated by means of the rigorous and the approximate method for the electric field is carried out.| File | Dimensione | Formato | |
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AEIT2025_PQT_Cu_Al_GM_final_revised PREPRINT.pdf
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