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- McNeill_HVDC_Back-to-back_station abstract "McNeill HVDC Back-to-back station is an HVDC back-to-back station at 50°35'56"N 110°1'25"W, which interconnects the power grids of the Canadian provinces Alberta and Saskatchewan and went in service in 1989. McNeill HVDC back-to-back station is the most northerly of a series of HVDC interconnectors between the unsynchronised eastern and western AC systems of the United States and Canada. The station, which was built by GEC Alstom, can transfer a maximum power of 150 MW at a DC voltage of 42 kV. The station is unusual in many respects and contained several "firsts" for HVDC. Most notably, the McNeill station was the first HVDC installation to dispense with the DC smoothing reactor, a component which most engineers consider as an absolute must at HVDC plants. Even today, only a small number of back to back HVDC stations (and no point-to-point transmission schemes) have been built without DC smoothing reactors. The McNeill station was also notable for operating with an exceptionally low Short Circuit Ratio. The Short Circuit Ratio (SCR) is a measure of how strong or weak the connected AC system is. Most HVDC schemes using line-commutated converters operate with a SCR of at least 3, but the McNeill scheme was designed to operate with an Effective Short Circuit Ratio (ESCR – a measure which subtracts the harmonic filters from the evaluation of Short Circuit Ratio and is more meaningful on very weak AC systems) of less than 1.0 on the Saskatchewan side. This is one of the lowest ESCR values ever achieved with a line-commutated HVDC converter.McNeill was also the first HVDC station to use three-phase, four-winding converter transformers. The transformers, which are connected to 138 kV on the Alberta side and 230 kV on the Saskatchewan side, are each equipped with a 25 kV tertiary winding (to which the harmonic filters are connected) in addition to the two valve windings. This arrangement allowed the harmonic filters to be switched by vacuum switchgear which is more tolerant of large numbers of operations than high-voltage switchgear connected directly to the 138 kV or 230 kV busbars. This was a significant advantage since the extremely low short circuit ratio required the reactive power to be controlled within very tight limits, leading to frequent switching operations.The 12 thyristor valves at each side are arranged in a conventional twelve-pulse bridge. The valves are cooled by a mixture of de-ionised water and ethylene glycol, which does not freeze at a temperature of -50°C. These were the first thyristor valves ever to use water/glycol mixtures directly inside the valve, with no separate secondary cooling circuit. The valves use 100mm, 5.2 kV electrically triggered thyristors with 11 in series per valve on the Alberta side and 12 in series per valve on the Saskatchewan side.In January 2012, Alstom was awarded a contract to replace the analogue control system by a more modern digital control system.".
- McNeill_HVDC_Back-to-back_station wikiPageExternalLink Other-Documents.
- McNeill_HVDC_Back-to-back_station wikiPageExternalLink login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel3%2F1160%2F4020%2F00154157.pdf%3Farnumber%3D154157&authDecision=-203.
- McNeill_HVDC_Back-to-back_station wikiPageExternalLink Atco-McNeill-LONotice-Mar13-2009-web.pdf.
- McNeill_HVDC_Back-to-back_station wikiPageID "22902876".
- McNeill_HVDC_Back-to-back_station wikiPageLength "5996".
- McNeill_HVDC_Back-to-back_station wikiPageOutDegree "34".
- McNeill_HVDC_Back-to-back_station wikiPageRevisionID "649670230".
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink ATCO_Electric.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Alberta.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Alstom.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Analog_computer.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink CIGRÉ_-_International_Council_on_Large_Electric_Systems.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Canada.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Category:1989_establishments_in_Alberta.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Category:Converter_stations.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Category:Cypress_County.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Category:Electric_power_transmission_systems_in_Canada.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Category:Energy_infrastructure_completed_in_1989.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Category:Power_stations_in_Alberta.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Digital_data.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Ethylene_glycol.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink GEC_Alsthom.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink GEC_Alstom.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink HVDC.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink HVDC_converter.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink HVDC_converter_station.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink High-voltage_direct_current.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink International_Council_on_Large_Electric_Systems.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Purified_water.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Saskatchewan.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Switchgear.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Thyristor.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Transformer.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink United_States.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLink Vacuum_switchgear.
- McNeill_HVDC_Back-to-back_station wikiPageWikiLinkText "McNeill HVDC Back-to-back station".
- McNeill_HVDC_Back-to-back_station wikiPageWikiLinkText "McNeill".
- McNeill_HVDC_Back-to-back_station capacity "150.0".
- McNeill_HVDC_Back-to-back_station country Canada.
- McNeill_HVDC_Back-to-back_station currentType HVDC.
- McNeill_HVDC_Back-to-back_station currentType High-voltage_direct_current.
- McNeill_HVDC_Back-to-back_station dcVoltage "42.0".
- McNeill_HVDC_Back-to-back_station est "1989".
- McNeill_HVDC_Back-to-back_station finish Saskatchewan.
- McNeill_HVDC_Back-to-back_station hasPhotoCollection McNeill_HVDC_Back-to-back_station.
- McNeill_HVDC_Back-to-back_station lengthKm "0".
- McNeill_HVDC_Back-to-back_station mapCaption "Location of McNeill back to back HVDC".
- McNeill_HVDC_Back-to-back_station operator ATCO_Electric.
- McNeill_HVDC_Back-to-back_station owner ATCO_Electric.
- McNeill_HVDC_Back-to-back_station polesNo "1".
- McNeill_HVDC_Back-to-back_station start Alberta.
- McNeill_HVDC_Back-to-back_station state Alberta.
- McNeill_HVDC_Back-to-back_station substationInstaller Alstom.
- McNeill_HVDC_Back-to-back_station substationInstaller GEC_Alsthom.
- McNeill_HVDC_Back-to-back_station type "Back to Back".
- McNeill_HVDC_Back-to-back_station wikiPageUsesTemplate Template:Coord.
- McNeill_HVDC_Back-to-back_station wikiPageUsesTemplate Template:Infobox_power_transmission_line.
- McNeill_HVDC_Back-to-back_station wikiPageUsesTemplate Template:Reflist.
- McNeill_HVDC_Back-to-back_station subject Category:1989_establishments_in_Alberta.
- McNeill_HVDC_Back-to-back_station subject Category:Converter_stations.
- McNeill_HVDC_Back-to-back_station subject Category:Cypress_County.
- McNeill_HVDC_Back-to-back_station subject Category:Electric_power_transmission_systems_in_Canada.
- McNeill_HVDC_Back-to-back_station subject Category:Energy_infrastructure_completed_in_1989.
- McNeill_HVDC_Back-to-back_station subject Category:Power_stations_in_Alberta.
- McNeill_HVDC_Back-to-back_station hypernym Station.
- McNeill_HVDC_Back-to-back_station point "50.59888888888889 -110.02361111111111".
- McNeill_HVDC_Back-to-back_station type District.
- McNeill_HVDC_Back-to-back_station type Station.
- McNeill_HVDC_Back-to-back_station type District.
- McNeill_HVDC_Back-to-back_station type Establishment.
- McNeill_HVDC_Back-to-back_station type Station.
- McNeill_HVDC_Back-to-back_station type SpatialThing.
- McNeill_HVDC_Back-to-back_station comment "McNeill HVDC Back-to-back station is an HVDC back-to-back station at 50°35'56"N 110°1'25"W, which interconnects the power grids of the Canadian provinces Alberta and Saskatchewan and went in service in 1989. McNeill HVDC back-to-back station is the most northerly of a series of HVDC interconnectors between the unsynchronised eastern and western AC systems of the United States and Canada.".
- McNeill_HVDC_Back-to-back_station label "McNeill HVDC Back-to-back station".
- McNeill_HVDC_Back-to-back_station sameAs m.0641ndx.
- McNeill_HVDC_Back-to-back_station sameAs 7282506.
- McNeill_HVDC_Back-to-back_station sameAs Q6802531.
- McNeill_HVDC_Back-to-back_station sameAs Q6802531.
- McNeill_HVDC_Back-to-back_station lat "50.59888888888889".
- McNeill_HVDC_Back-to-back_station long "-110.02361111111111".
- McNeill_HVDC_Back-to-back_station wasDerivedFrom McNeill_HVDC_Back-to-back_station?oldid=649670230.
- McNeill_HVDC_Back-to-back_station isPrimaryTopicOf McNeill_HVDC_Back-to-back_station.