Projects concluded in 2013
In 2013, the projects concluded in the National Electricity Transmission Network
(RNT) contributed toward improved reception capacity, particularly from
renewable sources, toward improved international exchange capacities with
Spain and to better power feeding conditions to distribution networks, and
towards the safety and reliability of the overall system operation.
In the Trás-os-Montes region, to reinforce supply to consumers and improve
power feeding conditions to the network in that area, a new connection came
into operation between the Valpaços and Vila Pouca de Aguiar substations,
completing the 220 kV circuit of the mountainous axis between Lagoaça
On the of the Douro axis and in the Porto area, of note are the 400kV
connections between Armamar-Recarei and Recarei-Vermoim, along with the
introduction of a 400kV level at Vermoim substation, reinforcing the safety and
reliability of supply to consumers in the Greater Porto region and improving
interconnection capacity. Also in the Porto area, the refurbishment to 220kV
of the Maia steel plant was concluded and came into operation, along with the
connection that feeds it.
In the southern coastal region of Greater Porto a new 400/60kV substation came
online at Feira, supplying consumers in the municipalities of São João da Madeira,
Feira and Arouca.
In Beira Interior a second 150kV connection came into service between the
Falagueira and Castelo Branco substations, providing this interior region with improved supply of renewable energies and enhanced overall safety of the network operation.
In the Lisbon area, in order to reinforce supply to consumers, it is worth noting
the construction of a new 220kV underground circuit between the Alto de Mira
and Sete Rios substations. Also with the aim of reinforcing supply to consumers,
the introduction of a 400kV level at the Fernão Ferro substation was concluded.
Seven new transformers started operation, with a total power increase of 1 069
MVA (of which 320MVA is at the Maia steel plant substation).