Insulation losses in HVDC cables are mostly deemed negligible compared to conductor losses, but this might not always be the case, especially for innovative cable designs. This paper aims at a preliminary evaluation of the effect of insulation losses on the temperature rise in the insulation of HVDC XLPE-insulated cables subject to load cycles according to CIGRÉ Technical Brochure 496. The ultimate goal is finding the voltage values above which insulation losses lead to a non-negligible increase of insulation temperature, thereby affecting life and reliability of HVDC cables. The results show that the effect of insulation losses on the loss of life is deemed negligible. Thus, insulation losses can have an impact only on the thermal stability of cables, not on the loss of life itself.
Preliminary estimation of the effect of insulation losses on HVDC cable reliability / B. Diban, G. Mazzanti, I. Troia. - ELETTRONICO. - (2020), pp. 466-469. (Intervento presentato al convegno 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (IEEE CEIDP 2020) tenutosi a Virtual Edition nel 19-30 ottobre 2020) [10.1109/CEIDP49254.2020.9437504].
Preliminary estimation of the effect of insulation losses on HVDC cable reliability
B. Diban;G. Mazzanti
;
2020
Abstract
Insulation losses in HVDC cables are mostly deemed negligible compared to conductor losses, but this might not always be the case, especially for innovative cable designs. This paper aims at a preliminary evaluation of the effect of insulation losses on the temperature rise in the insulation of HVDC XLPE-insulated cables subject to load cycles according to CIGRÉ Technical Brochure 496. The ultimate goal is finding the voltage values above which insulation losses lead to a non-negligible increase of insulation temperature, thereby affecting life and reliability of HVDC cables. The results show that the effect of insulation losses on the loss of life is deemed negligible. Thus, insulation losses can have an impact only on the thermal stability of cables, not on the loss of life itself.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
