HVDC Vancouver Island: Difference between revisions

HVDC Vancouver Island
HVDC Vancouver Island
	HVDC Vancouver Island pylon
Location
Country	Canada
State	British Columbia
Coordinates	48°49′39″N 123°42′55″W / 48.82750°N 123.71528°W
From	Delta, British Columbia
To	Duncan, British Columbia
Ownership information
Owner	BC Hydro
Operator	BC Hydro
Construction information
Installer of substations	ASEA
Commissioned	Pole 1: 1968; Pole 2: 1977
Decommissioned	Pole 1: 2014; Pole 2: 2016
Technical information
Type	Multi-terminal
Type of current	HVDC
Total length	75 km (47 mi)
Power rating	370 MW
DC voltage	280 kV

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HVDC Vancouver Island is a de-energized high-voltage direct current interconnection owned by BC Hydro that runs between Arnott Substation (ARN) in Delta, British Columbia at 49°5′31″N 123°2′31″W / 49.09194°N 123.04194°W / 49.09194; -123.04194 (Arnott Substation) on the Canadian mainland, and the Vancouver Island Terminal (VIT) in Duncan, British Columbia on Vancouver Island at 48°49′39″N 123°42′55″W / 48.82750°N 123.71528°W / 48.82750; -123.71528 (Vancouver Island Terminal). It went into operation in 1968 and was extended in 1977. HVDC Vancouver Island consists of three overhead line sections with a total length of 42 kilometres and two submarine cable sections with a length of 33 kilometres. Pole 1 ceased operation in 2014, and Pole 2 ceased operation in 2016. The infrastructure remains in place and portions may be re-used in the future.

Route

After its departure from Arnott Substation the overhead power line on the mainland splits at 49°3′38″N 123°4′30″W / 49.06056°N 123.07500°W / 49.06056; -123.07500 (Powerline Branch) into two branches, one running to the Canoe Pass Terminal at 49°3′6″N 123°7′22″W / 49.05167°N 123.12278°W / 49.05167; -123.12278 (Mainland Cable Terminal 1) and the other running to the Tsawwassen Beach Terminal at 49°1′40″N 123°6′1″W / 49.02778°N 123.10028°W / 49.02778; -123.10028 (Mainland Cable Terminal 2), where the first submarine cable section begins.

At 48°55′07″N 123°24′15″W / 48.91861°N 123.40417°W / 48.91861; -123.40417, the first submarine cable section ends and a short overhead line section running south-west across Galiano Island starts. The overhead line leaves Galiano Island south of Montague Harbour in an 880-metre-long span, which starts at 48°52′51″N 123°23′21″W / 48.88083°N 123.38917°W / 48.88083; -123.38917 and ends on Parker Island at 48°52′48″N 123°24′04″W / 48.88000°N 123.40111°W / 48.88000; -123.40111.

A little to the west, on Parker Island at 48°52′45″N 123°24′9″W / 48.87917°N 123.40250°W / 48.87917; -123.40250 (Parker Island Cable Terminal) the overhead line ends and the second submarine cable section begins. At 48°51′2″N 123°25′31″W / 48.85056°N 123.42528°W / 48.85056; -123.42528 (Salt Spring Island Cable Terminal) the cable reaches Salt Spring Island and the third overhead line section starts. It crosses Salt Spring Island west-south-westerly. North of Maxwell Point at 48°49′54″N 123°33′50″W / 48.83167°N 123.56389°W / 48.83167; -123.56389 and Arbutus Point at 48°49′40″N 123°35′21″W / 48.82778°N 123.58917°W / 48.82778; -123.58917 the overhead line crosses Sansum Narrows, the strait between Salt Spring Island and Vancouver Island, by a 1900-metre-long span. After this span the overhead line runs westward to Vancouver Island Terminal near the town of Duncan.

History

In 1968 the first pole of the HVDC Vancouver Island link went into service. Its static inverters use mercury vapour rectifiers. Each of these rectifiers was 3.35 metres (11.0 feet) long, 1.22 metres (4.0 feet) wide and 6.10 metres (20.0 feet) high and has a weight of 4.5 metric tons. The valves are situated in a hall 26.21 metres (86.0 feet) long, 11.89 metres (39.0 feet) wide and 11.28 metres (37.0 feet) high. The maximum transmission capacity of this pole was 312 megawatts and the transmission voltage was 260 kV. The stations Vancouver Island Terminal and Arnott Substation were designed and delivered by Swedish company ASEA (later ABB). The Swedish team of some 10 people were headed for the first phase by Ivan Hedlund and for the second phase by Gunnar Ahgren.

In 1977 the HVDC Vancouver Island link was supplemented by installing a second pole. This pole used thyristor valves for its static inverters and operated at a voltage of 280 kV with a rating of 370 megawatts. A new 230 kV. submarine cable for three-phase alternating current has been constructed between the Canadian mainland and Vancouver Island. This parallels the existing two HVDC lines and replaces one of two earlier 138 kV lines. In the 2005 hearings for the new 230kV circuit the HVDC systems were reported to be at the end of their service life and are not considered to be reliable. As a result of this, the first pole was shut down in 2014 and the second in 2016.

Electrodes and metallic return

HVDC Vancouver Island used metallic return, during monopolar operation, when current is lower than 600 A. Otherwise earth return was used. On Vancouver Island the line for metallic return is a monopolar line on wooden poles, which are used in some sections also by AC lines, running parallel to the main line of HVDC Vancouver Island.

On the mainland, it uses the poles of the electrode line until a point at 49°3′39″N 123°2′34″W / 49.06083°N 123.04278°W / 49.06083; -123.04278 (Metallic Return Branch). After this point it runs on wooden poles together with a single-circuit three-phase AC line until 49°2′25″N 123°4′32″W / 49.04028°N 123.07556°W / 49.04028; -123.07556 (Metallic Return Cable Terminal). From there it runs as underground cable to Splashdown Park, where it transits at 49°1′58″N 123°5′26″W / 49.03278°N 123.09056°W / 49.03278; -123.09056 (Metallic Return Cable Terminal) again into an overhead line, which ends at the terminal of the main line at 49°1′40″N 123°6′1″W / 49.02778°N 123.10028°W / 49.02778; -123.10028 (Mainland Cable Terminal 2).

The electrode on the Canadian Mainland is a land electrode situated at Boundary Bay at 49°03′25″N 123°01′46″W / 49.05694°N 123.02944°W / 49.05694; -123.02944 (Boundary Bay Ground Electrode). It is connected with Arnott Substation by an overhead pole line with two conductors. The electrode on Vancouver Island is a shore electrode in a bay at Sansum Narrows at 48°46′22″N 123°34′24″W / 48.77278°N 123.57333°W / 48.77278; -123.57333 (Sansum Narrows Ground Electrode). It is connected with Vancouver Island Terminal by an overhead line with two conductors, which is installed on wooden poles. It runs between Vancouver Island Terminal and a point northwest of Maple Bay at 48°49′35″N 123°37′38″W / 48.82639°N 123.62722°W / 48.82639; -123.62722 parallel to other power lines.

External links

@@ Line 1: / Line 1: @@
+{{Short description|De-energized high-voltage direct current interconnection}}
-{{Cleanup|date=December 2009}}
+{{Use Canadian English|date=January 2023}}
+{{unreferenced|date=September 2021}}
+{{GeoGroup}}
+{{Infobox power transmission line
+| name                = HVDC Vancouver Island
+| photo               = HVDC-Victoria.jpg
+| caption             = HVDC Vancouver Island pylon
+| map                 =
+| map_caption         = Location of McNeill back to back HVDC
+| country             = [[Canada]]
+| state               = [[British Columbia]]
+| province            =
+| coordinates         = {{Coord|48|49|39|N|123|42|55|W|type:landmark|name=Vancouver Island Terminal (North Cowichan Static Inverter Plant)}}
+| lat                 =
+| long                =
+| direction           =
+| start               = [[Delta, British Columbia]]
+| through             =
+| finish              = [[Duncan, British Columbia]]
+| par                 =
+| owner               = [[BC Hydro]]
+| partners            =
+| operator            = [[BC Hydro]]
+| cable_manufacturer  =
+| cable_installer     =
+| cable_layer         =
+| substation_manufacturer=
+| substation_installer= [[ASEA]]
+| contractors         =
+| construction        =
+| expected            =
+| est                 = Pole 1: 1968<br>Pole 2: 1977
+| decom               = Pole 1: 2014<br>Pole 2: 2016
+| type                = Multi-terminal
+| current_type        = [[HVDC]]
+| length_km           = 75
+| capacity            = 370&nbsp;MW
+| AC_voltage          =
+| DC_voltage          = 280&nbsp;kV
+| poles_no            =
+| circuits_no         =
+}}
+'''HVDC Vancouver Island''' is a de-energized [[high-voltage direct current]] interconnection owned by [[BC Hydro]] that runs between Arnott Substation (ARN) in [[Delta, British Columbia]] at {{Coord|49|5|31|N|123|2|31|W|type:landmark|name=Arnott Substation}} on the [[Canada|Canadian]] mainland, and the Vancouver Island Terminal (VIT) in [[Duncan, British Columbia]] on [[Vancouver Island]] at {{Coord|48|49|39|N|123|42|55|W|type:landmark|name=Vancouver Island Terminal}}. It went into operation in 1968 and was extended in 1977. HVDC Vancouver Island consists of three overhead line sections with a total length of 42 kilometres and two [[Submarine power cable|submarine cable]] sections with a length of 33 kilometres. Pole 1 ceased operation in 2014, and Pole 2 ceased operation in 2016. The infrastructure remains in place and portions may be re-used in the future.
+==Route==
-{{GeoGroupTemplate}}
-'''HVDC Vancouver Island''' is a [[high-voltage direct current]] interconnection between the Vancouver Island Terminal (VIT) near [[North Cowichan, British Columbia]] on [[Vancouver Island]] at {{Coord|48|49|39|N|123|42|55|W|type:landmark|name=Vancouver Island Terminal ( North Cowichan Static Inverter Plant)}} and the Arnott Substation (ARN) near [[Delta, British Columbia]] at {{Coord|49|5|31|N|123|2|31|W|type:landmark|name=Arnott Substation ( Delta Static Inverter Plant)}} on the [[Canada|Canadian]] mainland. It went into operation in 1968 and was extended in 1977. HVDC Vancouver Island consists of three overhead line sections with a total length of 42 kilometres and two submarine cable sections with a length of 33 kilometres.
+After its departure from Arnott Substation the overhead power line on the mainland splits at {{Coord|49|3|38|N|123|4|30|W|type:landmark|name=Powerline Branch}} into two branches, one running to the Canoe Pass Terminal at {{Coord|49|3|6|N|123|7|22|W|type:landmark|name=Mainland Cable Terminal 1}} and the other running to the Tsawwassen Beach Terminal at {{Coord|49|1|40|N|123|6|1|W|type:landmark|name=Mainland Cable Terminal 2}}, where the first submarine cable section begins.
-After its departure from Arnott Substation the overhead power line on the mainland splits at {{Coord|49|3|38|N|123|4|30|W|type:landmark|name=Powerline Branch}} into two branches, one running to a terminal at {{Coord|49|3|6|N|123|7|22|W|type:landmark|name=Mainland Cable Terminal 1}} and the other running to a terminal at {{Coord|49|1|40|N|123|6|1|W|type:landmark|name=Mainland Cable Terminal 2}}, where the first submarine cable section begins.
+At {{Coord|48|55|07|N|123|24|15|W|type:landmark|name=Galiano Island Cable Terminal East}}, the first submarine cable section ends and a short overhead line section running south-west across [[Galiano Island]] starts. The overhead line leaves Galiano Island south of Montague Harbour in an 880-metre-long span, which starts at {{Coord|48|52|51|N|123|23|21|W|type:landmark|name=Galiano Island-Parker Island Span East End}} and ends on [[Parker Island]] at {{Coord|48|52|48|N|123|24|04|W|type:landmark|name=Galiano Island-Parker Island Span West End}}.
-At {{Coord|48|55|07|N|123|24|15|W|type:landmark|name=Galiano Island Cable Terminal East}}, the first submarine cable section ends and a short overhead line section running south-west across Galiano Island starts. The overhead line leaves Galiano Island south of Montague Harbour in an 880 metres long span, which starts at {{Coord|48|52|51|N|123|23|21|W|type:landmark|name=Galiano Island-Parker Island Span East End}} and ends on Parker Island at {{Coord|48|52|48|N|123|24|04|W|type:landmark|name=Galiano Island-Parker Island Span West End}}.
-A bit westward on Parker Island at {{Coord|48|52|45|N|123|24|9|W|type:landmark|name=Parker Island Cable Terminal}} the overhead line ends and the second submarine cable section begins.
-At {{Coord|48|51|2|N|123|25|31|W|type:landmark|name=Salt Spring Island Cable Terminal}} the cable reaches Salt Spring Island and the third overhead line section starts. It crosses Salt Spring Island westsouthwestly. North of Maxwell Point at {{Coord|48|49|54|N|123|33|50|W|type:landmark|name=Sansum Narrows DC Powerline Span East End}} and Arbutus Point at {{Coord|48|49|40|N|123|35|21|W|type:landmark|name=Sansum Narrows DC Powerline Span West End}} the overhead line crosses in a 1900 metres long span of [[Sansum Narrows]], the strait between Salt Spring Island and Vancouver Island. After this span the overhead line runs westward to Vancouver Island Terminal near the town of Duncan.
+A little to the west, on Parker Island at {{Coord|48|52|45|N|123|24|9|W|type:landmark|name=Parker Island Cable Terminal}} the overhead line ends and the second submarine cable section begins.
-In 1968 the first pole of the HVDC Vancouver Island link went into service. Its [[Inverter (electrical)|static inverter]]s use [[mercury arc rectifier|mercury vapour rectifier]]s. The maximum transmission capacity of this pole is 312 megawatts and the transmission voltage is 260 kV. The stations Vancouver Island Terminal and Arnott Substation were designed and delivered by Swedish company [[ASEA]] (later [[ABB]]). The Swedish team of some 10 people were headed for the first phase by Ivan Hedlund and for the second phase by Gunnar Ahgren.
+At {{Coord|48|51|2|N|123|25|31|W|type:landmark|name=Salt Spring Island Cable Terminal}} the cable reaches [[Salt Spring Island]] and the third overhead line section starts. It crosses Salt Spring Island west-south-westerly. North of Maxwell Point at {{Coord|48|49|54|N|123|33|50|W|type:landmark|name=Sansum Narrows DC Powerline Span East End}} and Arbutus Point at {{Coord|48|49|40|N|123|35|21|W|type:landmark|name=Sansum Narrows DC Powerline Span West End}} the overhead line crosses [[Sansum Narrows]], the strait between Salt Spring Island and Vancouver Island, by a 1900-metre-long span. After this span the overhead line runs westward to Vancouver Island Terminal near the town of [[Duncan, British Columbia|Duncan]].
+==History==
-In 1977 the HVDC Vancouver Island link was supplemented by installing a second pole. This pole uses [[thyristor]] valves for its static inverters and operates at a voltage of 280 kV with a rating of 370 megawatts.  A new 230 kV. submarine cable for three-phase alternating current has been constructed between the Canadian mainland and Vancouver Island, that parallels the existing two HVDC lines and replaces one of two earlier 138kV lines. The HVDC systems are at the end of their service life and are not considered to be reliable.
+In 1968 the first pole of the HVDC Vancouver Island link went into service. Its [[Inverter (electrical)|static inverter]]s use [[mercury arc rectifier|mercury vapour rectifier]]s. Each of these rectifiers was {{convert|3.35|m|ft|abbr=off}} long, {{convert|1.22|m|ft|abbr=off}} wide and {{convert|6.10|m|ft|abbr=off}} high and has a weight of 4.5 metric tons. The valves are situated in a hall {{convert|26.21|m|ft|abbr=off}} long, {{convert|11.89|m|ft|abbr=off}} wide and {{convert|11.28|m|ft|abbr=off}} high. The maximum transmission capacity of this pole was 312 megawatts and the transmission voltage was 260&nbsp;kV. The stations Vancouver Island Terminal and Arnott Substation were designed and delivered by Swedish company [[ASEA]] (later [[ABB]]). The Swedish team of some 10 people were headed for the first phase by Ivan Hedlund and for the second phase by Gunnar Ahgren.
+In 1977 the HVDC Vancouver Island link was supplemented by installing a second pole. This pole used [[thyristor]] valves for its static inverters and operated at a voltage of 280&nbsp;kV with a rating of 370 megawatts. A new 230&nbsp;kV. submarine cable for [[Three-phase electric power|three-phase alternating current]] has been constructed between the Canadian mainland and Vancouver Island. This parallels the existing two HVDC lines and replaces one of two earlier 138&nbsp;kV lines. In the 2005 hearings for the new 230kV circuit the HVDC systems were reported to be at the end of their service life and are not considered to be reliable. As a result of this, the first pole was shut down in 2014 and the second in 2016.
-==Electrodes and Metallic Return==
-HVDC Vancouver Island uses during monopolar operation metallic return when current is lower than 600 A, otherwise earth return. On Vancouver Island the line for metallic return is a monopolar line on wooden poles, which are used in some sections also by AC lines, running parallel to the main line of HVDC Vancouver Island. On the mainland, it uses until a point at {{coord|49|3|39|N|123|2|34|W|type:landmark|name=Metallic Return Branch}} the poles of the electrode line, after this point it runs on wooden poles together with a single-circuit three-phase AC line until {{coord|49|2|25|N|123|4|32|W|type:landmark|name=Metallic Return Cable Terminal}}.
-From there it runs as underground cable to Splasdown Park, where it transits at {{coord|49|1|58|N|123|5|26|W|type:landmark|name=Metallic Return Cable Terminal}} again into an overhead line, which ends at the terminal of the main line at {{Coord|49|1|40|N|123|6|1|W|type:landmark|name=Mainland Cable Terminal 2}}.
+==Electrodes and metallic return==
-The electrode on the Canadian Mainland is a land electrode situated at Boundary Bay at {{Coord|49|03|25|N|123|01|46|W|type:landmark|name=Boundary Bay Ground Electrode}}. It is connected with Arnott Substation by an overhead pole line with 2 conductors. The electrode on Vancouver Island is a shore electrode in a bay at Sansum Narrows at {{Coord|48|46|22|N|123|34|24|W|type:landmark|name=Sansum Narrows Ground Electrode}}. It is connected with Vancouver Island Terminal by an overhead line with 2 conductors, which is installed on wooden poles. It runs between Vancouver Island Terminal and a point northwest of Maple Bay at {{Coord|48|49|35|N|123|37|38|W|type:landmark|name=Sansum Narrows Ground Electrode Line Branch}} parallel to other powerlines.
+HVDC Vancouver Island used metallic return, during monopolar operation, when current is lower than 600&nbsp;A. Otherwise earth return was used. On Vancouver Island the line for metallic return is a monopolar line on wooden poles, which are used in some sections also by AC lines, running parallel to the main line of HVDC Vancouver Island.
+On the mainland, it uses the poles of the electrode line until a point at {{coord|49|3|39|N|123|2|34|W|type:landmark|name=Metallic Return Branch}}. After this point it runs on wooden poles together with a single-circuit three-phase AC line until {{coord|49|2|25|N|123|4|32|W|type:landmark|name=Metallic Return Cable Terminal}}.
+From there it runs as underground cable to Splashdown Park, where it transits at {{coord|49|1|58|N|123|5|26|W|type:landmark|name=Metallic Return Cable Terminal}} again into an overhead line, which ends at the terminal of the main line at {{Coord|49|1|40|N|123|6|1|W|type:landmark|name=Mainland Cable Terminal 2}}.
+The electrode on the Canadian Mainland is a land electrode situated at [[Boundary Bay]] at {{Coord|49|03|25|N|123|01|46|W|type:landmark|name=Boundary Bay Ground Electrode}}. It is connected with Arnott Substation by an overhead pole line with two conductors. The electrode on Vancouver Island is a shore electrode in a bay at Sansum Narrows at {{Coord|48|46|22|N|123|34|24|W|type:landmark|name=Sansum Narrows Ground Electrode}}. It is connected with Vancouver Island Terminal by an overhead line with two conductors, which is installed on wooden poles. It runs between Vancouver Island Terminal and a point northwest of [[Maple Bay, British Columbia|Maple Bay]] at {{Coord|48|49|35|N|123|37|38|W|type:landmark|name=Sansum Narrows Ground Electrode Line Branch}} parallel to other power lines.
 ==See also==
 * [[Jordan River Dam]]
+* [[Juan de Fuca Cable Project]]
-* [[Powerlines connecting Vancouver Island with Canadian Mainland]]
+* [[List of HVDC projects|List of HVDC Projects]]
+* [[Power lines connecting Vancouver Island with Canadian Mainland]]
 ==External links==
 * http://www.bctransco.com/regulatory/applications/Vancouver+Island+Transmission+Reinforcement+Project+CPCN+Application.htm {{dead link|date=April 2011}}
+* https://www.bcuc.com/Documents/Proceedings/2005/DOC_7818_B1-1%20(Part%201%20of%202)%20VITR%20CPCN%20Application%20and%20Appx%20A-D.pdf
 * https://web.archive.org/web/20051115122606/http://www.transmission.bpa.gov/cigresc14/Compendium/VANCOU.htm
 * https://web.archive.org/web/20051115122606/http://www.transmission.bpa.gov/cigresc14/Compendium/Vancou+Pictures.pdf
 * https://www.openstreetmap.org/relation/6026488#map=10/48.9396/-123.2391
+* https://www.bchydro.com/content/dam/BCHydro/customer-portal/documents/corporate/suppliers/transmission-system/system_operating_orders/7T23.pdf
 [[Category:Submarine power cables|Vancouver Island]]
 [[Category:HVDC transmission lines]]
 [[Category:Electric power transmission systems in Canada]]
+[[Category:BC Hydro]]
+[[Category:Vancouver Island]]
+[[Category:1968 establishments in British Columbia]]
+[[Category:Energy infrastructure completed in 1968]]