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Excursion Notices

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Excursion notices are emailed out to registered electricity market participants and comprise of the following notice types and :

  • Frequency Excursion Notices
  • Voltage Excursion Notices

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JulyDate
EXN Voltage North Island Wilton T8 Tripped [  27.84 KB ]23/07/2021
EXN Voltage North Island Ngawha B Generation tripped. [  27.87 KB ]23/07/2021
EXN Voltage North Island Glenbrook generation tripped [  27.86 KB ]23/07/2021
EXN Voltage North Island Henderson Maungatapere 1 Tripped, WellsfordT2 Tripped, Maungaturoto T1 Tripped [  27.94 KB ]22/07/2021
EXN Voltage North Island Ngawha B Generation Tripped. [  27.86 KB ]21/07/2021
EXN Voltage North Island Matahina Generation Tripped. [  27.85 KB ]21/07/2021
EXN Voltage North Island Nga Awa Purua Generation Tripped. [   27.87 KB ]20/07/2021
EXN Voltage North Island Nga Awa Purua Generation Tripped. [   27.87 KB ]20/07/2021
EXN Voltage North Island Huntly Generation Tripped. [   27.87 KB ]19/07/2021
EXN Voltage North Island Penrose STC 1A tripped [  27.85 KB ]19/07/2021
EXN Frequency National Huntly generation tripped [  28.57 KB ]18/07/2021
EXN Voltage North Island Tuai feeders autoreclosed [  27.85 KB ]18/07/2021
EXN Frequency North Island Huntly generation tripped. [  28.56 KB ]18/07/2021
EXN Voltage North Island Cambridge 11kV feeders tripped [  27.87 KB ]17/07/2021
EXN Voltage North Island Kawereau Geothermal generation tripped [  27.89 KB ]17/07/2021
EXN Voltage South Island Coleridge generation tripped [  27.87 KB ]17/07/2021
EXN Voltage North Island Tuai feeders tripped. [  27.91 KB ]17/07/2021
EXN Voltage North Island Waiotahi feeder tripped [  27.86 KB ]15/07/2021
EXN Voltage North Island [  27.86 KB ]13/07/2021
EXN Voltage North Island Henderson Maungatapere 2 Auto-reclosed,Maungaturoto T2 Tripped, Wellsford T1 Auto-reclosed [  27.98 KB ]09/07/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed [  27.9 KB ]08/07/2021
EXN Voltage South Island Inangahua Westport 2 Tripped [  27.87 KB ]06/07/2021
EXN Voltage North Island Tokaanu Generation Tripped. [   27.87 KB ]04/07/2021
EXN Voltage North Island Ngawha B generation tripped. [   27.86 KB ]04/07/2021
EXN Voltage South Island Ohau C generation tripped [  27.86 KB ]04/07/2021
EXN Voltage North Island Woodville Waipawa 1 Tripped, Dannevirke T2Tripped, Waipawa T2 Tripped [  27.92 KB ]04/07/2021
JuneDate
EXN Voltage South Island Tiwai load tripped [  27.85 KB ]29/06/2021
EXN Frequency South Island Tiwai reduction line tripped [  28.57 KB ]28/06/2021
EXN Voltage South Island Gore Roxburgh Auto-reclosed [  27.89 KB ]27/06/2021
EXN Voltage North Island Arapuni Hangatiki Auto-reclosed [  27.89 KB ]26/06/2021
EXN Voltage North Island Matahina Generation Tripped. [  27.85 KB ]22/06/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed [  27.9 KB ]21/06/2021
EXN Voltage North Island Kinleith Generation Tripped. [  27.88 KB ]21/06/2021
EXN Voltage North Island Kinleith Generation Tripped. [   27.87 KB ]21/06/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Tripped [  27.86 KB ]19/06/2021
EXN Voltage North Island Arapuni Kinleith 1 Tripped [  27.87 KB ]19/06/2021
EXN Voltage South Island Balclutha Halfway Bush 1 Auto-reclosed [  27.91 KB ]18/06/2021
EXN Voltage North Island Henderson C1 Tripped [  27.85 KB ]17/06/2021
EXN Voltage South Island Ohau B generation tripped [  27.87 KB ]17/06/2021
EXN Voltage North Island [  27.9 KB ]16/06/2021
EXN Voltage North Island Bunnythorpe feeder tripped. [  27.86 KB ]15/06/2021
EXN Voltage National [  27.86 KB ]15/06/2021
EXN Frequency South Island [  28.58 KB ]15/06/2021
EXN Voltage North Island Motunui T3 tripped. [  27.85 KB ]14/06/2021
EXN Voltage North Island Ngawha generation tripped [  27.86 KB ]10/06/2021
EXN Voltage North Island Hawera Stratford Tripped, Hawera PateaTripped, Hawera T2 Tripped [  27.9 KB ]07/06/2021
EXN Frequency North Island Kawerau geothermal generation tripped [  28.59 KB ]07/06/2021
EXN Voltage South Island Oamaru Studholme Waitaki 2 Tripped, OamaruT2 Tripped [  27.92 KB ]05/06/2021
EXN Voltage North Island Rotokawa Generation tripped [  27.85 KB ]03/06/2021
EXN Voltage North Island Haywards T35 Tripped [  27.85 KB ]03/06/2021
EXN Voltage North Island Ohinewai - Otahuhu Curcuit 1 Auto Reclosed. [  27.92 KB ]01/06/2021
EXN Voltage South Island Inangahua Robertson 1 tripped [  27.87 KB ]01/06/2021
MayDate
EXN Voltage North Island Rotokawa generation tripped [  27.86 KB ]31/05/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed [  27.9 KB ]30/05/2021
EXN Voltage North Island Kawerau Ohakuri Auto-reclosed [  27.9 KB ]27/05/2021
EXN Voltage South Island Waipara CB 102 tripped [  27.87 KB ]27/05/2021
EXN Voltage North Island Kawerau Geothermal Generation tripped [  27.9 KB ]26/05/2021
EXN Voltage North Island Linton 220kV bus B tripped,Linton T3 Tripped [  27.9 KB ]25/05/2021
EXN Voltage North Island Haywards T35 tripped. [  27.86 KB ]24/05/2021
EXN Voltage South Island Islington Livingstone 1 Auto-reclosed [  27.91 KB ]22/05/2021
EXN Voltage North Island Glenbrook generation tripped [  27.86 KB ]22/05/2021
EXN Voltage South Island Coleridge Otira 1 Auto-reclosed [  27.89 KB ]20/05/2021
EXN Voltage North Island Multiple Trippings ; Gisborne feeders autoreclosed. [  27.92 KB ]18/05/2021
EXN Voltage North Island Gisborne Feeders Auto-reclosed [  27.9 KB ]18/05/2021
EXN Voltage South Island Inangahua Robertson 1 Tripped [  27.87 KB ]18/05/2021
EXN Voltage North Island Gisborne Feeders Auto-reclosed [  27.9 KB ]18/05/2021
EXN Voltage South Island Clyde Roxburgh 1 Tripped [  27.87 KB ]18/05/2021
EXN Voltage North Island Hangatiki Feeder Tripped [  27.86 KB ]15/05/2021
EXN Voltage North Island Ngawha B generation tripped [  27.88 KB ]13/05/2021
EXN Voltage North Island Haywards Synchronous Condenser 7 tripped [  27.92 KB ]13/05/2021
EXN Voltage North Island Marsden STC5 Tripped [  27.85 KB ]10/05/2021
EXN Voltage North Island Arapuni Hangatiki Ongarue 1 Tripped [  27.99 KB ]10/05/2021
EXN Voltage South Island Kumara Generation tripped. [  27.87 KB ]10/05/2021
EXN Voltage North Island Kinleith Tarukenga 2 Auto-reclosed,Lichfield T2 Tripped [  27.94 KB ]09/05/2021
EXN Voltage North Island Maungatapere feeders tripped [  27.87 KB ]08/05/2021
EXN Voltage North Island Arapuni Hamilton 1 Auto-reclosed [  27.9 KB ]08/05/2021
EXN Voltage South Island Waipori Generator Tripped [  27.87 KB ]06/05/2021
EXN Voltage North Island Penrose STC tripped [  27.85 KB ]06/05/2021
EXN Voltage North Island Kapuni generator tripped. [  27.86 KB ]05/05/2021
EXN Voltage South Island Argyle Generation Tripped [  27.87 KB ]05/05/2021
EXN Voltage North Island Waipipi Generation tripped [  27.87 KB ]04/05/2021
EXN Frequency National Huntly generator tripped [  28.56 KB ]02/05/2021
EXN Voltage North Island Te Kaha Waiotahi Auto-reclosed [  27.9 KB ]01/05/2021
AprilDate
EXN Voltage North Island [  27.86 KB ]30/04/2021
EXN Voltage North Island Haywards STC31 tripped [  27.85 KB ]29/04/2021
EXN Voltage North Island Tuai Feeder Auto reclose [  27.86 KB ]28/04/2021
EXN Voltage North Island Penrose STC 1B tripped [  27.86 KB ]28/04/2021
EXN Voltage North Island Matahina Generation tripped [  27.87 KB ]26/04/2021
EXN Voltage South Island Islington 66kV feeder tripped. [  27.88 KB ]24/04/2021
EXN Voltage South Island Ashburton Bromley 1 Auto-reclosed [  27.9 KB ]24/04/2021
EXN Voltage South Island Ashley Southbrook 1 Auto-reclosed [  27.9 KB ]24/04/2021
EXN Voltage North Island Marsden STC5 Tripped [  27.86 KB ]24/04/2021
EXN Voltage North Island Marsden STC5 Tripped [  27.85 KB ]23/04/2021
EXN Voltage North Island Henderson Southdown Tripped [  27.86 KB ]23/04/2021
EXN Voltage North Island Henderson Maungatapere 1 Auto-reclosed,Maungaturoto T1 Tripped [  27.95 KB ]22/04/2021
EXN Voltage North Island Woodville feeder tripped [  27.87 KB ]21/04/2021
EXN Voltage North Island Henderson Maungatapere 1 Tripped,Maungaturoto T1 Tripped, Wellsford T2 Tripped [  27.94 KB ]21/04/2021
EXN Voltage North Island Bunnythorpe Mangahao 1 Tripped, Mangahao T3Tripped [  27.9 KB ]21/04/2021
EXN Voltage North Island Waihou Waikino 1 Auto-reclosed [  27.89 KB ]15/04/2021
EXN Voltage North Island Albany SVC7 tripped. [   27.86 KB ]15/04/2021
EXN Voltage North Island Bunnythorpe Paraparaumu Haywards 2Auto-reclosed [  27.93 KB ]14/04/2021
EXN Voltage North Island Redclyffe Tuai 2 Auto-reclosed [  27.9 KB ]14/04/2021
EXN Voltage North Island Arapuni Hangatiki Auto-reclosed [  27.9 KB ]14/04/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed [  27.91 KB ]14/04/2021
EXN Voltage South Island Manapouri Generator Tripped [  27.86 KB ]12/04/2021
EXN Voltage North Island Arapuni Hangatiki Auto-reclosed [  27.54 KB ]10/04/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed [  27.55 KB ]08/04/2021
EXN Voltage South Island Argyle Generation tripped. [  27.87 KB ]08/04/2021
EXN Voltage South Island Islington Livingstone 1 Auto-reclosed [  27.91 KB ]06/04/2021
EXN Voltage North Island Huirangi Motonui Auto-reclosed [  27.9 KB ]05/04/2021
EXN Voltage North Island Mckee Generation tripped. [  27.86 KB ]02/04/2021
EXN Voltage North Island Tauhara Generation tripped [  27.87 KB ]02/04/2021
MarchDate
EXN Voltage North Island Mokai generation tripped. [  27.84 KB ]31/03/2021
EXN Voltage South Island Waipori generation tripped. [  27.87 KB ]31/03/2021
EXN Voltage North Island Hawera Stratford Auto-reclosed [  27.88 KB ]31/03/2021
EXN Voltage North Island Masterton Feeder tripped. [  27.85 KB ]31/03/2021
EXN Voltage North Island Henderson Maungatapere 2 Auto-reclosed [  27.9 KB ]31/03/2021
EXN Voltage National HVDC Pole 3 Tripped and Restarted [  27.87 KB ]31/03/2021
EXN Voltage North Island Stratford CB222 Auto-reclosed [  27.88 KB ]30/03/2021
EXN Voltage North Island [  27.61 KB ]30/03/2021
EXN Voltage North Island Otahuhu Whakamaru 1 Auto-reclosed [  27.89 KB ]30/03/2021
EXN Voltage North Island Kapuni Generation Tripped [  27.86 KB ]30/03/2021
EXN Voltage South Island Coleridge Otira 1 Auto-reclosed [  27.9 KB ]28/03/2021
EXN Voltage North Island Huirangi feeders tripped. [  27.85 KB ]28/03/2021
EXN Voltage North Island Otahuhu Whakamaru 1 Auto-reclosed [  27.54 KB ]28/03/2021
EXN Frequency North Island Taranaki Combined Cycle Generation tripped [  28.34 KB ]25/03/2021
EXN Voltage National HVDC Pole 3 tripped. [  27.85 KB ]23/03/2021
EXN Voltage South Island Coleridge 11kV Feeder Auto-reclosed. [  27.55 KB ]20/03/2021
EXN Voltage North Island Mataroa Feeder Tripped [  27.85 KB ]19/03/2021
EXN Voltage North Island Mataroa Feeder Tripped [  27.85 KB ]18/03/2021
EXN Voltage South Island Coleridge Otira 2 Auto-reclosed [  27.54 KB ]14/03/2021
EXN Voltage South Island Balclutha C1 tripped [  27.51 KB ]13/03/2021
EXN Voltage North Island Kaitimako Te Matai 1 Auto-reclosed [  27.54 KB ]11/03/2021
EXN Voltage North Island Edgecumbe Tarukenga 2 Auto-reclosed [  27.54 KB ]11/03/2021
EXN Voltage North Island Owhata Te Matai Tarukenga 1 Auto-reclosed [  27.55 KB ]11/03/2021
EXN Voltage North Island Kinleith Tarukenga 2 Auto-reclosed [  27.55 KB ]11/03/2021
EXN Voltage North Island Arapuni Kinleith 2 Auto-reclosed [  27.55 KB ]11/03/2021
EXN Voltage North Island Kinleith Tarukenga 2 Auto-reclosed [  27.55 KB ]11/03/2021
EXN Voltage North Island [  27.53 KB ]10/03/2021
EXN Voltage North Island Waikino Feeder Auto Reclosed [  27.54 KB ]08/03/2021
EXN Voltage North Island Ngawha B Generation Tripped [  27.52 KB ]08/03/2021
EXN Voltage South Island Waitaki T22 Tripped [  27.52 KB ]05/03/2021
EXN Voltage North Island Otahuhu Whakamaru 2 Tripped [  27.52 KB ]04/03/2021
EXN Voltage North Island Arapuni Bombay Tripped [  27.51 KB ]04/03/2021
EXN Voltage North Island Melling T4 Tripped [  27.5 KB ]04/03/2021
EXN Voltage North Island Bombay Hamilton 1 Tripped [  27.52 KB ]04/03/2021
EXN Frequency National Huntly Frequency Response Test [  28.3 KB ]03/03/2021
EXN Voltage North Island Ngawha B Generation Tripped [  27.52 KB ]03/03/2021
FebruaryDate
EXN Voltage North Island Kaitimako Feeder Auto Reclosed. [  27.52 KB ]28/02/2021
EXN Voltage North Island Haywards SC2 tripped [  27.51 KB ]25/02/2021
EXN Voltage South Island Coleridge Feeder Tripped. [  27.52 KB ]23/02/2021
EXN Voltage North Island Glenbrook Generation Tripped [  27.51 KB ]21/02/2021
EXN Voltage South Island Multiple Trippings, Cromwell Frankton 2Tripped, Cromwell T8 Tripped, Frankton T4 Tripped [  27.59 KB ]21/02/2021
EXN Voltage South Island Multiple Trippings, Cromwell Frankton 2Tripped, Cromwell T8 Tripped, Frankton T4 Tripped [  27.59 KB ]20/02/2021
EXN Frequency North Island Carrington St Junction Rd Stratford 1Auto-reclosed [  28.25 KB ]20/02/2021
EXN Voltage North Island Ngawha B generation tripped [  27.5 KB ]19/02/2021
EXN Voltage North Island Ngawha B generation tripped [  27.51 KB ]19/02/2021
EXN Voltage North Island Ngawha B Generation tripped [  27.52 KB ]19/02/2021
EXN Voltage South Island [  27.52 KB ]19/02/2021
EXN Voltage North Island Mokai Generation Tripped. [  27.52 KB ]18/02/2021
EXN Voltage North Island Rangipo generation tripped [  27.5 KB ]18/02/2021
EXN Voltage South Island Tekapo A generation tripped [  27.52 KB ]18/02/2021
EXN Voltage North Island [  27.61 KB ]16/02/2021
EXN Voltage North Island Hinuera 33kV feeder tripped. [  27.51 KB ]16/02/2021
EXN Voltage North Island Ngawha B generation tripped. [  27.51 KB ]16/02/2021
EXN Voltage North Island [  27.61 KB ]15/02/2021
EXN Voltage North Island Junction Road Generation Tripped [  27.52 KB ]14/02/2021
EXN Voltage South Island Islington T2 Tripped [  27.51 KB ]12/02/2021
EXN Voltage North Island Mokai generation tripped [  27.5 KB ]12/02/2021
EXN Frequency National Tiwai Potline Tripped. [  28.32 KB ]11/02/2021
EXN Voltage North Island Marton 33kV Feeders Tripped. [  27.52 KB ]09/02/2021
EXN Voltage South Island Coleridge Feeder tripped. [  27.51 KB ]08/02/2021
EXN Voltage North Island Haywards Synchronous Condenser 7 tripped [  27.55 KB ]07/02/2021
EXN Voltage South Island Coleridge Otira 1 Auto-reclosed [  27.54 KB ]06/02/2021
JanuaryDate
EXN Voltage North Island Edgecumbe Kawerau 3 Auto-reclosed [  27.61 KB ]29/01/2021
EXN Frequency North Island Nga Awa Purua generation tripped. [  28.22 KB ]29/01/2021
EXN Voltage South Island Ashburton Timaru Twizel 1 Auto-reclosed [  27.56 KB ]28/01/2021
EXN Voltage South Island Ashburton Timaru Twizel 2 Auto-reclosed [  27.55 KB ]28/01/2021
EXN Voltage North Island Arapuni Hamilton 1 Auto-reclosed [  27.55 KB ]21/01/2021
EXN Voltage South Island Coleridge T6 Tripped [  27.51 KB ]21/01/2021
EXN Frequency/Voltage North Island Bunnythorpe Linton Wilton 1Tripped [  28.24 KB ]20/01/2021
EXN Voltage North Island Wairakei generator tripped [  27.52 KB ]20/01/2021
EXN Voltage North Island Waipipi Generation Tripped. [   27.52 KB ]19/01/2021
EXN Voltage South Island Kumara Otira 1 Tripped [  27.51 KB ]19/01/2021
EXN Frequency South Island Tiwai Reduction Line tripped. [  28.21 KB ]18/01/2021
EXN Voltage North Island Ngawha B Generation tripped [  27.51 KB ]18/01/2021
EXN Voltage South Island Coleridge Otira 1 Auto-reclosed, ColeridgeOtira 2 Auto-reclosed [  27.57 KB ]17/01/2021
EXN Voltage North Island Ngawha B Generation tripped. [  27.52 KB ]17/01/2021
EXN Voltage North Island Kapuni Generation Tripped [  27.51 KB ]15/01/2021
EXN Voltage South Island Gore Feeder tripped. [  27.51 KB ]12/01/2021
EXN Voltage North Island Ngawha B generation tripped [  27.51 KB ]12/01/2021
EXN Voltage North Island Ngawha B generation trippped [  27.51 KB ]12/01/2021
EXN Voltage North Island Arapuni Hangatiki Tripped [  27.52 KB ]12/01/2021
EXN Frequency South Island Tiwai Reduction Line tripped. [  28.22 KB ]11/01/2021
EXN Voltage North Island Ngawha B generation tripped [  27.51 KB ]11/01/2021
EXN Voltage South Island White Hill generation tripped [  27.54 KB ]10/01/2021
EXN Voltage North Island Marton bus tripped [  27.49 KB ]10/01/2021
EXN Voltage North Island Rangipo Wairakei Auto-reclosed [  27.54 KB ]07/01/2021
EXN Voltage North Island Ngawha B generation tripped [  27.52 KB ]07/01/2021
EXN Voltage North Island Ngawha B generation tripped [  27.51 KB ]07/01/2021
EXN Voltage North Island Kinleith Generation tripped. [  27.53 KB ]05/01/2021
EXN Frequency North Island Kawerau Geothermal Generation tripped [  28.23 KB ]05/01/2021
EXN Voltage North Island Wilton T5 Tripped [  27.5 KB ]04/01/2021
EXN Voltage North Island Matahina Unit Tripped. [  27.51 KB ]03/01/2021
EXN Voltage North Island Huntly Stratford Auto-reclosed [  27.54 KB ]03/01/2021
EXN Voltage North Island Drury Huntly 1 Auto-reclosed [  27.54 KB ]03/01/2021
EXN Voltage North Island Otahuhu Whakamaru 1 Auto-reclosed [  27.55 KB ]03/01/2021
EXN Voltage North Island Bunnythorpe Tokaanu 1 Auto-reclosed [  27.55 KB ]03/01/2021
EXN Voltage North Island Bombay Hamilton 1 Auto-reclosed [  27.54 KB ]03/01/2021
EXN Voltage North Island Bunnythorpe Tokaanu 1 Auto-reclosed [  27.55 KB ]03/01/2021
EXN Voltage North Island Hamilton Piako Waihou 2 Auto-reclosed [  27.55 KB ]03/01/2021
EXN Voltage North Island Bunnythorpe Tokaanu 2 Auto-reclosed [  27.55 KB ]03/01/2021
EXN Voltage National Benmore T30 Tripped [  27.55 KB ]03/01/2021
EXN Voltage National Benmore T30 Tripped [  27.56 KB ]02/01/2021
EXN Voltage South Island Livingstone Waitaki 1 Auto-reclosed [  27.56 KB ]02/01/2021
EXN Voltage North Island Ngawha B Generation tripped. [  27.51 KB ]02/01/2021
EXN Voltage North Island Ngawha B generation tripped. [  27.52 KB ]01/01/2021