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72753POWER SYSTEM EVENTS20/01/2020 08:56:39 AM
Update - Non-credible contingency event - SA region - 20/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 20/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 72743
At 0835 hrs the Torrens Island A 275kV West bus was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - SA region - 20/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 72743
At 0835 hrs the Torrens Island A 275kV West bus was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
72743POWER SYSTEM EVENTS20/01/2020 12:20:09 AM
Non-credible contingency event - SA region - 20/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 20/01/2020
At 0004 hrs the Torrens Island A 275kV West bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 20/01/2020
At 0004 hrs the Torrens Island A 275kV West bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
72646POWER SYSTEM EVENTS17/01/2020 09:46:01 AM
Update - Non-credible contingency event - Qld region - 17/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Qld region - 17/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE 72644
At 0802 hrs the Nebo - Wotonga No 7118 132kV line and the Wotonga SVC 1 tripped.
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Qld region - 17/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE 72644
At 0802 hrs the Nebo - Wotonga No 7118 132kV line and the Wotonga SVC 1 tripped.
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Manager NEM Real Time Operations
72644POWER SYSTEM EVENTS17/01/2020 08:23:39 AM
Non-credible contingency event - Qld region - 17/01/2020
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Qld region - 17/01/2020
At 0802 hrs the Nebo - Wotonga No 7118 132kV line and the Wotonga SVC 1 tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - Qld region - 17/01/2020
At 0802 hrs the Nebo - Wotonga No 7118 132kV line and the Wotonga SVC 1 tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
72610POWER SYSTEM EVENTS16/01/2020 09:09:06 AM
Update - Non-credible contingency event - Tas region - 16/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Tas region - 16/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE 72608
At 0732 hrs the Lindisfarne - Mornington Tee - Rokeby No. 1 and 2 110kV lines tripped.
The cause of this non credible contingency event has been identified as due to lightning.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO will therefore reclassify this event as a credible contingency event when lightning is in the vicinity.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Tas region - 16/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE 72608
At 0732 hrs the Lindisfarne - Mornington Tee - Rokeby No. 1 and 2 110kV lines tripped.
The cause of this non credible contingency event has been identified as due to lightning.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO will therefore reclassify this event as a credible contingency event when lightning is in the vicinity.
Manager NEM Real Time Operations
72608POWER SYSTEM EVENTS16/01/2020 08:28:11 AM
Non-credible contingency event - Tas region - 16/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Tas region - 16/01/2019
At 0732 hrs the Lindisfarne - Mornington Tee - Rokeby No. 1 and 2 110kV lines tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - Tas region - 16/01/2019
At 0732 hrs the Lindisfarne - Mornington Tee - Rokeby No. 1 and 2 110kV lines tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
72605POWER SYSTEM EVENTS16/01/2020 06:45:23 AM
Non-credible contingency event - Tas region - 16/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Tas region - 16/01/2020
At 0531 hrs the Chapel Street Liapootah No.2 220kV line and the Chapel Street S752 220kV circuit breaker tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Manager NEM Real Time Operations
Non-credible contingency event - Tas region - 16/01/2020
At 0531 hrs the Chapel Street Liapootah No.2 220kV line and the Chapel Street S752 220kV circuit breaker tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Manager NEM Real Time Operations
72512POWER SYSTEM EVENTS13/01/2020 05:21:37 PM
Update - Non-credible contingency event - SA region - 13/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 13/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 72510
At 0149 hrs the Waterloo 132 kV South Bus, Waterloo No 5 132 kV / 33 kV Transformer and the Waterloo - Hummocks 132 kV line tripped.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - SA region - 13/01/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 72510
At 0149 hrs the Waterloo 132 kV South Bus, Waterloo No 5 132 kV / 33 kV Transformer and the Waterloo - Hummocks 132 kV line tripped.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
72510POWER SYSTEM EVENTS13/01/2020 02:23:02 AM
Non-credible contingency event - SA region - 13/01/2020
AEMO ELECTRICITY MARKET NOTICE.
At 0149 hrs the Waterloo 132 kV South Bus tripped, Waterloo No 5 132 kV / 33 kV Transformer tripped and the Waterloo - Hummocks 132 kV line tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
At 0149 hrs the Waterloo 132 kV South Bus tripped, Waterloo No 5 132 kV / 33 kV Transformer tripped and the Waterloo - Hummocks 132 kV line tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations