Bornholm Cable
Encyclopedia
Bornholm Cable is one of the longest submarine three phase AC cable in the world. It is a 60 kV cable interconnecting the power grids of Bornholm
and Sweden
.
The Bornholm Cable starts at 60 kV substation Hasle ( 55°10′13"N 14°43′24"E) and runs on its 1.4 kilometres as underground cable with a cross section of 400 square milimetres to the Baltic Sea
, where the 43.5 kilometres long submarine cable section starts. At this section copper conductors with 240 square milimetres are used.
From the landing point at Sweden it runs on a length of 700 metres as underground cable with conductors with 400 square milimetres to the cable terminal situated at 55°26′00"N 14°13′30"E, where a 4.2 kilometres long 60 kV overhead line to the 132 kV/60 kV-Substation Borrby substation ( 55°27′05"N 14°10′00"E) starts. At this line copper conductors with 127 square milimetres are used.
Borrby substation is fed by Tomelilla substation ( 55°33′28"N 13°56′18"E) by a 132 kV line with 2 circuits.
a second one, which vcan be fired either with oil or coal. It was inaugurated in 1995 and has a generation capacity
of 37 MW.
Aakirkeby, Rønne-Syd, Rønne Power Station, Viadukten, Snorrebakken. It is except the section between Ronne-Syd and Snorrebakken
an overhead line.
From this ring line several 60 kV lines branches, which are all implemented as underground cables. These are the branch to Allinge
starting at Olsker, that to Gudhjem starting at Østerlars, a branch to Svaneke starting at Dalslunde, a branch to Svaneke via Nexo starting at Bodilker, a branch to Poulsker starting at Bodilker.
A further branch to Westhaven starts at Rønne Power Station.
A further connection built as underground cable connects Hasle substation with Rønne-Nord, Viadukten and Ronne-South.
Bornholm
Bornholm is a Danish island in the Baltic Sea located to the east of the rest of Denmark, the south of Sweden, and the north of Poland. The main industries on the island include fishing, arts and crafts like glass making and pottery using locally worked clay, and dairy farming. Tourism is...
and Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....
.
The Bornholm Cable starts at 60 kV substation Hasle ( 55°10′13"N 14°43′24"E) and runs on its 1.4 kilometres as underground cable with a cross section of 400 square milimetres to the Baltic Sea
Baltic Sea
The Baltic Sea is a brackish mediterranean sea located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. It is bounded by the Scandinavian Peninsula, the mainland of Europe, and the Danish islands. It drains into the Kattegat by way of the Øresund, the Great Belt and...
, where the 43.5 kilometres long submarine cable section starts. At this section copper conductors with 240 square milimetres are used.
From the landing point at Sweden it runs on a length of 700 metres as underground cable with conductors with 400 square milimetres to the cable terminal situated at 55°26′00"N 14°13′30"E, where a 4.2 kilometres long 60 kV overhead line to the 132 kV/60 kV-Substation Borrby substation ( 55°27′05"N 14°10′00"E) starts. At this line copper conductors with 127 square milimetres are used.
Borrby substation is fed by Tomelilla substation ( 55°33′28"N 13°56′18"E) by a 132 kV line with 2 circuits.
Rønne Power Station
Rønne Power Station has 2 steam units, one oil-fired with a generation capacity of 25 MW inaugaurated in 1974, anda second one, which vcan be fired either with oil or coal. It was inaugurated in 1995 and has a generation capacity
of 37 MW.
Power grid of Bornholm
The power grid of Bornholm consists of a 60 kV-ring line connecting the substations Hasle, Olsker, Østerlars, Dalslunde, Bodilsker,Aakirkeby, Rønne-Syd, Rønne Power Station, Viadukten, Snorrebakken. It is except the section between Ronne-Syd and Snorrebakken
an overhead line.
From this ring line several 60 kV lines branches, which are all implemented as underground cables. These are the branch to Allinge
starting at Olsker, that to Gudhjem starting at Østerlars, a branch to Svaneke starting at Dalslunde, a branch to Svaneke via Nexo starting at Bodilker, a branch to Poulsker starting at Bodilker.
A further branch to Westhaven starts at Rønne Power Station.
A further connection built as underground cable connects Hasle substation with Rønne-Nord, Viadukten and Ronne-South.
Technical data of 60 kV Substations of Bornholm
| Substation | Coordinates | Year of inaugauration | Count of transformers | Transformer ( MVA) | Count of 10 kV feeders | |Remarks |
|---|---|---|---|---|---|---|
| Aakirkeby | 55°4′5"N 14°53′52"E | 1967 | 2 | 16.0 | 10 | |
| Allinge | 55°16′6"N 14°48′1"E | 1984 | 2 | 20.0 | 4 | |
| Bodilsker | 55°3′47"N 15°3′57"E | 1959 | 2 | 14.0 | 6 | |
| Dalslunde | 55°6′0"N 15°3′3"E | 0 | 0 | 0 | Switching Station, no transformers | |
| Gudhjem | 55°12′10"N 14°58′20"E | 1998 | 1 | 4.0 | 4 | |
| Hasle | 55°10′13"N 14°43′24"E | 1980 | 2 | 20.0 | 7 | |
| Nexø | 55°3′47"N 15°6′57"E | 1981 | 2 | 20.0 | 6 | |
| Olsker | 55°13′55"N 14°47′44"E | 1959 | 2 | 8.0 | 6 | |
| Østerlars | 55°9′12"N 14°56′6"E | 1974 | 1 | 6.3 | 4 | |
| Poulsker | 55°1′20"N 15°3′21"E | 1990 | 1 | 10.0 | 5 | |
| Rønne Nord | 55°6′40"N 14°42′28"E | 1989 | 1 | 10.0 | 6 | |
| Rønne Power Station | 55°6′40"N 14°42′28"E | 2 | 41.0 | 9 | ||
| Rønne Syd | 55°5′23"N 14°43′50"E | 1983 | 1 | 10.0 | 4 | |
| Snorrebakken | 55°6′42"N 14°44′40"E | 1977 | 1 | 10.0 | 6 | |
| Snorrebakken | 55°6′24"N 14°44′19"E | 0 | 0 | 0 | Cable terminal, no transformers | |
| Svaneke | 55°8′5"N 15°8′10"E | 1988 | 1 | 10.0 | 6 | |
| Vesthavnen | 55°6′10"N 14°41′26"E | 1994 | 1 | 10.0 | 4 | |
| Viadukten | 55°5′52"N 14°42′50"E | 1988 | 1 | 10.0 | 7 |
External links
- http://www.powerlab.dk/upload/sites/powerlabdk/media/the_bornholm_power_system_an_overview_v2.pdf