Excursion Notices

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Excursion notices are emailed to registered electricity market participants when a frequency excursion or voltage excursion occurs on the power system

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July
Notice Date
Notice EXN Voltage South Island Tiwai reduction line tripped. (PDF 30.13 KB) Date
Notice EXN Voltage North Island Marsden Maungatapere 2 Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Frequency South Island Tiwai reduction line tripped (PDF 30.78 KB) Date
Notice EXN Voltage North Island Edgecumbe Waiotahi 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Atiamuri Ohakuri Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Voltage North Island Redclyffe Tuai 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Redclyffe Tuai 2 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage South Island Blenheim Stoke 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Hamilton Karapiro 1 Tripped (PDF 30.18 KB) Date
Notice EXN Voltage North Island Maungaturoto T1 Tripped, Maungaturoto T2Tripped (PDF 30.2 KB) Date
Notice EXN Voltage North Island Arapuni Hangatiki Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Arapuni Hamilton 2 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage South Island Halfway Bush Roxburgh 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Penrose STC 1A Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Arapuni Hangatiki Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Voltage North Island Penrose STC 1A Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Arapuni Hangatiki Auto-reclosed (PDF 30.49 KB) Date
Notice EXN Voltage North Island Arapuni Hangatiki Auto-reclosed (PDF 30.22 KB) Date
June
Notice Date
Notice EXN Voltage North Island Otahuhu Whakamaru 1 Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Arapuni Bombay 1 Tripped (PDF 30.14 KB) Date
Notice EXN Frequency National Huntly Generation Tripped (PDF 30.78 KB) Date
Notice EXN Voltage North Island Waiotahi T5 Tripped (PDF 30.11 KB) Date
Notice EXN Voltage North Island Multiple Trippings, Kawerau Matahina 2Auto-reclosed, Matahina Generation Tripped (PDF 30.23 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 2 Tripped (PDF 30.15 KB) Date
Notice EXN Voltage South Island Gore Feeder Tripped (PDF 30.12 KB) Date
Notice EXN Voltage North Island McKee Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Arapuni Bombay 1 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Kopu T3 Tripped (PDF 30.16 KB) Date
Notice EXN Voltage North Island Masterton Feeder Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Huapai Marsden 1 Tripped (PDF 30.25 KB) Date
Notice EXN Voltage North Island Haywards T1 Tripped (PDF 30.12 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 2 Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Aniwhenua Generation Tripped (PDF 30.13 KB) Date
Notice EXN Voltage South Island Tiwai Reduction Line Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Mokai Generation Tripped (PDF 30.14 KB) Date
Notice EXN Frequency South Island Tiwai Reduction Line Tripped (PDF 30.78 KB) Date
Notice EXN Voltage North Island Central Park T3 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage South Island Atarau Reefton Inangahua 1 Tripped, DobsonReefton Inangahua 2 Tripped (PDF 30.18 KB) Date
Notice EXN Voltage South Island Invercargill Roxburgh 2 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Hamilton Karapiro 1 Tripped, Cambridge T4Tripped (PDF 30.17 KB) Date
Notice EXN Voltage South Island Coleridge Otira 1 Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Frequency South Island Tiwai Line 2 tripped (PDF 30.77 KB) Date
Notice EXN Frequency South Island Tiwai Reduction Line (PDF 30.82 KB) Date
Notice EXN Voltage North Island Arapuni Hamilton 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Wairau Road T7 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Wairau Road T7 Tripped (PDF 30.13 KB) Date
May
Notice Date
Notice EXN Voltage North Island Otahuhu Southdown Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Otahuhu C31 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage South Island Roxburgh Three Mile Hill 2 Auto-reclosed (PDF 30.18 KB) Date
Notice EXN Voltage South Island Roxburgh Three Mile Hill 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Roxburgh Three Mile Hill 1 Tripped (PDF 30.15 KB) Date
Notice EXN Voltage South Island Roxburgh Three Mile Hill 1 Auto-reclosed (PDF 30.18 KB) Date
Notice EXN Voltage South Island Roxburgh Three Mile Hill 1 Auto-reclosed (PDF 30.18 KB) Date
Notice EXN Voltage North Island Kinleith Generation Tripped (PDF 30.15 KB) Date
Notice EXN Voltage North Island Kinleith Generation Tripped (PDF 30.15 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 1 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Hinuera Karapiro Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Harapaki Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Wheao Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Multiple Trippings, Atiamuri Tarukenga 1Tripped, Atiamuri Tarukenga 2 Auto-reclosed (PDF 30.23 KB) Date
Notice EXN Voltage North Island Kinleith Tarukenga 1 Auto-reclosed,Lichfield T1 Tripped (PDF 30.26 KB) Date
Notice EXN Voltage North Island Kinleith Tarukenga 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Coleridge Hororata 2 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage South Island Waitaki Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Aniwhenua Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Kaitimako Tarukenga 1 Tripped (PDF 30.15 KB) Date
Notice EXN Voltage South Island Tekapo B Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage South Island Kimberley CB 4902 Tripped (PDF 30.19 KB) Date
Notice EXN Voltage South Island Kimberley CB 4922 tripped. (PDF 30.14 KB) Date
Notice EXN Frequency/Voltage National Tiwai Reduction Line Tripped (PDF 30.81 KB) Date
Notice EXN Voltage North Island Ohakune Feeder Tripped (PDF 30.17 KB) Date
Notice EXN Voltage North Island Haywards Synchronous Condenser tripped (PDF 30.16 KB) Date
Notice EXN Voltage North Island Waiotahi feeder auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Matahina Generation Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Haywards Feeder Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Stratford Generation Tripped (PDF 30.13 KB) Date
Notice EXN Frequency South Island (PDF 30.78 KB) Date
Notice EXN Voltage North Island Mangahao Generation Tripped (PDF 30.15 KB) Date
Notice EXN Voltage South Island Ashburton 220kV Busses B and C tripped (PDF 30.16 KB) Date
Notice EXN Voltage North Island Waiotahi Feeder tripped (PDF 30.13 KB) Date
Notice EXN Frequency South Island Tiwai Reduction Line Tripped (PDF 30.79 KB) Date
Notice EXN Voltage North Island Bunnythorpe Mataroa Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Highbank Generation Tripped (PDF 30.14 KB) Date
April
Notice Date
Notice EXN Frequency National TWI Potline tripped. (PDF 30.8 KB) Date
Notice EXN Frequency National Tiwai Potline Tripped (PDF 30.79 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Coleridge Otira 1 Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Voltage South Island Highbank Generation Tripped (PDF 30.15 KB) Date
Notice EXN Voltage North Island Bunnythorpe Mataroa Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island McKee generator tripped (PDF 30.13 KB) Date
Notice EXN Voltage South Island Invercargill Roxburgh 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Arapuni Hangatiki Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage South Island Kumara generation tripped. (PDF 30.14 KB) Date
Notice EXN Frequency South Island Tiwai Reduction Line (PDF 30.77 KB) Date
Notice EXN Voltage North Island Otahuhu Whakamaru 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Bunnythorpe Paraparaumu Haywards 1Auto-reclosed (PDF 30.23 KB) Date
Notice EXN Voltage South Island Livingstone Norwood 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage South Island Edendale Invercargill 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Frequency National HLY Generation unit tripped (PDF 30.81 KB) Date
Notice EXN Voltage North Island Henderson Maungatapere 1 Auto-reclo (PDF 30.26 KB) Date
Notice EXN Frequency Voltage North Island Arapuni Hamilton (PDF 30.81 KB) Date
Notice EXN Voltage North Island Kinleith Generation Tripped. (PDF 30.15 KB) Date
Notice EXN Voltage South Island Oamaru Blackpoint Waitaki (PDF 30.18 KB) Date
Notice EXN Voltage North Island Haywards Synchronous Condenser (PDF 30.16 KB) Date
March
Notice Date
Notice EXN Voltage South Island Islington Tekapo B Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Oamaru Blackpoint Waitaki (PDF 30.16 KB) Date
Notice EXN Voltage North Island Kinleith Generation Tripped (PDF 30.15 KB) Date
Notice EXN Voltage South Island Tiwai Reduction Line Restoration (PDF 30.15 KB) Date
Notice EXN Voltage North Island Marsden STC 5 Tripped (PDF 30.12 KB) Date
Notice EXN Voltage South Island Brydone C1 Tripped (PDF 30.12 KB) Date
Notice EXN Voltage South Island Coleridge Otira 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Kinleith Tarukenga 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Hawera Stratford Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Frequency Huntly Generation Tripped (PDF 107.04 KB) Date
Notice EXN Voltage North Island Hamilton T8 Tripped (PDF 30.12 KB) Date
Notice EXN Voltage South Island Gore Feeders Tripped (PDF 30.12 KB) Date
Notice EXN Voltage North Island Stratford 110kV Bus A2 Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Tararua Wind Farm tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Arapuni Hangatiki Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Aniwhenua generation tripped. (PDF 30.13 KB) Date
Notice EXN Frequency South Island Tiwai Potline returning (PDF 30.78 KB) Date
Notice EXN Voltage South Island Hokitika Kumara 1 Tripped (PDF 30.14 KB) Date
Notice EXN Voltage South Island Southbrook Waipara 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Fernhill Tuai 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage South Island Livingstone Norwood 1 Auto-reclosed (PDF 30.16 KB) Date
February
Notice Date
Notice EXN Voltage North Island Huntly Generation Tripped (PDF 30.13 KB) Date
Notice EXN Voltage South Island Hokitika Kumara 1 Tripped (PDF 30.12 KB) Date
Notice EXN Voltage South Island Coleridge Otira 1 Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Voltage South Island Coleridge Otira 1 Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Voltage North Island Kinleith Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Haywards Wilton Linton 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Livingstone Norwood 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Matahina Generation Tripped (PDF 30.12 KB) Date
Notice EXN Voltage North Island Te Mihi Generation Tripped (PDF 30.12 KB) Date
Notice EXN Voltage South Island Bromley Islington 1 Tripped, AshburtonBromley 1 Tripped (PDF 30.18 KB) Date
Notice EXN Voltage North Island (PDF 30.14 KB) Date
Notice EXN Voltage North Island Bunnythorpe Tokaanu 1 Auto-reclosed, RangipoTangiwai Tripped, Rangipo Wairakei Tripped (PDF 30.25 KB) Date
Notice EXN Voltage South Island Livingstone Norwood 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Haywards SC 7 tripped. (PDF 30.12 KB) Date
January
Notice Date
Notice EXN Voltage South Island Brydone C4 Tripped (PDF 30.12 KB) Date
Notice EXN Voltage North Island Waiotahi Feeder tripped. (PDF 30.13 KB) Date
Notice EXN Voltage South Island Hokitika Kumara 1 Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Carrington Street 33kV feeder tripped,Carrington Street T4 tripped (PDF 30.19 KB) Date
Notice EXN Frequency/Voltage South Island Tiwai reduction line tripped (PDF 30.8 KB) Date
Notice EXN Voltage South Island Islington SVC9 Tripped, Hororata FeederTripped (PDF 30.17 KB) Date
Notice EXN Voltage North Island HAY SC4 Tripped (PDF 30.43 KB) Date
Notice EXN Voltage North Island HAY SC7 Tripped. (PDF 30.13 KB) Date
Notice EXN Voltage South Island Clyde 33kV feeders tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Tokaanu Whakamaru 1 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Ohakune National Park Ongarue 1Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage South Island Livingstone Norwood 1 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage South Island Islington Norwood 1 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Bunnythorpe Tokaanu 2 Auto-reclosed (PDF 30.16 KB) Date
Notice EXN Voltage North Island Huntly Stratford Auto-reclosed (PDF 30.15 KB) Date
Notice EXN Voltage North Island Stratford Taumarunui Auto-Reclosed,Taumarunui T5 Tripped (PDF 30.18 KB) Date
Notice EXN Voltage North Island Bunnythorpe Tokaanu 2 Auto-reclosed (PDF 30.17 KB) Date
Notice EXN Voltage North Island Bunnythorpe Tokaanu 2 Auto-reclosed,Bunnythorpe Tokaanu 1 Auto-reclosed (PDF 30.22 KB) Date
Notice EXN Voltage North Island Te Mihi Generation Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Whirinaki Generation Tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Poihipi Generation Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Haywards STC31 tripped (PDF 30.14 KB) Date
Notice EXN Voltage North Island Te Kaha Feeder Autoreclosed. (PDF 30.13 KB) Date
Notice EXN Voltage North Island Maraetai Bus Tripped. (PDF 30.14 KB) Date
Notice EXN Voltage North Island Te Ahi O Maui generation tripped. (PDF 30.14 KB) Date
Notice EXN Voltage North Island Maraetai Bus Tripped (PDF 30.14 KB) Date
Notice EXN Voltage South Island Islington SVC3 Tripped (PDF 30.13 KB) Date
Notice EXN Voltage North Island Matahina Generation Tripped (PDF 30.13 KB) Date