RT Journal Article
T1 Disruption risk analysis of the overhead power lines in Portugal
A1 Redondo Gonçalves, Ana Catarina
A1 Marques, Margarida Correia
A1 Loureiro, Sílvia
A1 Nieto Muñiz, Raquel Olalla
A1 Liberato, Margarida L.R.
K1 2501.06 Dinámica Atmosférica
K1 2502 Climatología
K1 3322 Tecnología Energética
AB The growing increase in frequency and intensity of extreme weather events (EWEs) has a wide impact on energysystems and consumers, as energy transmission infrastructures - overhead power lines (OPL). The main objectiveof this work is to present the methodology of risk analysis of the EWEs on OPL in Portugal. The level of riskassociated with each of the identified events is classified according to the probability of occurrence and consequences,in a risk matrix, and through the cause-and-effect analysis. It is concluded that, in Portugal, theextreme wind – corresponding to level 11 of the Beaufort Wind Force Scale, that is, values equal to or higher than105.1 km h- 1 (29.22 m s-1) – is the main factor that provoked the OPL disruption, between 28% and 40% ofanalyzed events associated with windstorms. Considering the occurrence of compound events - wind and rain -the probability of damage to OPL is between 21% and 30%; for wind and ice, it is 3%–5%. EWEs represent aserious risk for electrical systems, and it is necessary to develop effective solutions to minimize the associatedimpacts, such as the modification and upgrade of the current design and engineering standards, and electricalnetwork monitoring.
PB Energy
SN 03605442
YR 2023
FD 2023
LK http://hdl.handle.net/11093/4449
UL http://hdl.handle.net/11093/4449
LA eng
NO Energy, 263, 125583 (2023)
NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG
NO Fundação para a Ciência e a Tecnologia | Ref. UID/GEO/50019/2019
DS Investigo
RD 11-dic-2024