HVDC Italy-Corsica-Sardinia
Encyclopedia
The HVDC Italy–Corsica–Sardinia (also called SACOI; Sardinia–Corsica–Italy) is used for the exchange of electric
energy
between the static inverter plant
Suvereto
on the Italian mainland
, the static inverter plant Lucciana
on Corsica
and the static inverter plant Codrongianos
on Sardinia
.
First used in 1965 as mono-polar line, today this takes the form of a bi-polar high-voltage
direct current
(HVDC) line. It consists of three overhead line sections: one on the Italian mainland with a length of 22 kilometres (13.7 mi), one on Corsica with a length of 156 kilometres (96.9 mi) and one on Sardinia with a length of 86 kilometres (53.4 mi). In addition to this, there are two submarine cable
sections: 105 kilometres (65.2 mi) between Italy and Corsica and 16 kilometres (9.9 mi) between Sardinia and Corsica.
Static inverters
for this line, which can transfer a maximum power of 200 MW at a voltage of 200 kV are in use today. Until the 1990s mercury vapor rectifiers were used, which have now been replaced by thyristor
s. In 1992 a second pole was taken in service, which can transfer 300 MW at a voltage of 200 kV. In contrast to most other installations for high voltage direct current transmission this system is a multipoint system making thus possible the energy exchange between several static inverter stations.
Electrode Line on Italian Mainland
Corsica
Sardinia
Electrode Line in Sardinia
Due to bad resolution of Google Maps possibly partly incorrect.
Electricity
Electricity is a general term encompassing a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning, static electricity, and the flow of electrical current in an electrical wire...
energy
Energy
In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems...
between the static inverter plant
Static inverter plant
A static inverter station, also known as an HVDC Converter Station, is the terminal equipment for a high-voltage direct-current transmission line, in which direct current is converted to three-phase alternating current, and, usually, the reverse...
Suvereto
Suvereto
Suvereto is a comune in the Province of Livorno in the Italian region Tuscany, located about 90 km southwest of Florence and about 60 km southeast of Livorno.- Technological sites:...
on the Italian mainland
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...
, the static inverter plant Lucciana
Lucciana
Lucciana is a commune of the Haute-Corse department of France on the island of Corsica.-Geography:Situated on the eastern coast of Corsica nearly to the south of Bastia, the commune extends itself to the mountainous summit as far as the twisted lagoon of La Marana bordering the Tyrrhenian...
on Corsica
Corsica
Corsica is an island in the Mediterranean Sea. It is located west of Italy, southeast of the French mainland, and north of the island of Sardinia....
and the static inverter plant Codrongianos
Codrongianos
Codrongianos is a comune in the Province of Sassari in the Italian region Sardinia, located about 170 km north of Cagliari and about 13 km southeast of Sassari...
on Sardinia
Sardinia
Sardinia is the second-largest island in the Mediterranean Sea . It is an autonomous region of Italy, and the nearest land masses are the French island of Corsica, the Italian Peninsula, Sicily, Tunisia and the Spanish Balearic Islands.The name Sardinia is from the pre-Roman noun *sard[],...
.
First used in 1965 as mono-polar line, today this takes the form of a bi-polar high-voltage
High voltage
The term high voltage characterizes electrical circuits in which the voltage used is the cause of particular safety concerns and insulation requirements...
direct current
Direct current
Direct current is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through...
(HVDC) line. It consists of three overhead line sections: one on the Italian mainland with a length of 22 kilometres (13.7 mi), one on Corsica with a length of 156 kilometres (96.9 mi) and one on Sardinia with a length of 86 kilometres (53.4 mi). In addition to this, there are two submarine cable
Cable
A cable is two or more wires running side by side and bonded, twisted or braided together to form a single assembly. In mechanics cables, otherwise known as wire ropes, are used for lifting, hauling and towing or conveying force through tension. In electrical engineering cables are used to carry...
sections: 105 kilometres (65.2 mi) between Italy and Corsica and 16 kilometres (9.9 mi) between Sardinia and Corsica.
Static inverters
Inverter (electrical)
An inverter is an electrical device that converts direct current to alternating current ; the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits....
for this line, which can transfer a maximum power of 200 MW at a voltage of 200 kV are in use today. Until the 1990s mercury vapor rectifiers were used, which have now been replaced by thyristor
Thyristor
A thyristor is a solid-state semiconductor device with four layers of alternating N and P-type material. They act as bistable switches, conducting when their gate receives a current trigger, and continue to conduct while they are forward biased .Some sources define silicon controlled rectifiers and...
s. In 1992 a second pole was taken in service, which can transfer 300 MW at a voltage of 200 kV. In contrast to most other installations for high voltage direct current transmission this system is a multipoint system making thus possible the energy exchange between several static inverter stations.
Sites
| Site | Coordinates |
|---|---|
| Suvereto HVDC Static Inverter | 43°03′10"N 10°41′42"E |
| Salivoli Cable Terminal (Italian Mainland) | 42°56′23"N 10°30′29"E |
| La Sdriscia Electrode Line Branch (Italian Mainland) | 42°59′26"N 10°35′08"E |
| La Torracia Electrode Line Terminal (Italian Mainland) | 43°01′08"N 10°31′25"E |
| Salivoli Cable Landing Point (Italian Mainland) | 42°56′7"N 10°29′59"E |
| Bastia Cable Terminal (Corse) | 42°39′57"N 9°25′59"E |
| Lucciana HVDC Static Inverter | 42°31′40"N 9°26′59"E |
| Bonifacio Cable Terminal (Corse) | 41°22′16"N 9°12′10"E |
| Santa Teresa Cable Terminal (Sardinia) | 41°14′49"N 9°10′55"E |
| Punta Tramontana Electrode (Sardinia) | 40°52′57"N 8°37′55"E |
| Punta Tramontana Electrode Line Terminal (Sardinia) | 40°52′45"N 8°38′00"E |
| Codrongianus HVDC Static Inverter (Sardinia) | 40°39′07"N 8°42′48"E |
Waypoints
Italy MainlandElectrode Line on Italian Mainland
Corsica
Sardinia
Electrode Line in Sardinia
Due to bad resolution of Google Maps possibly partly incorrect.
External links
- http://www.jce.it/newjce/contents/elettronica/cinescopio/200206/CIN6%20Chiama.pdf
- http://web.archive.org/web/20051115115248/www.transmission.bpa.gov/cigresc14/Compendium/SACOI.htm
- http://web.archive.org/web/20051115133446/www.transmission.bpa.gov/cigresc14/Compendium/Sacoi+Pictures.pdf