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Update - Non-credible contingency event - Tas region - 16/01/2020
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
Non-credible contingency event - Tas region - 16/01/2020
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 - 16/01/2020
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
Update - Non-credible contingency event - SA region - 13/01/2020
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
Non-credible contingency event - SA region - 13/01/2020
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
Non-credible contingency event - Qld region - 12/01/2020
Non-credible contingency event - Qld region - 12/01/2020
At 1529 hrs 7400 & 7401 Condabri North - Condabri Central 132 kV lines tripped and auto reclosed.
AEMO did not instruct load shedding.
AEMO has been advised of the disconnection of bulk electrical load, 43 MW at T218 Condabri South and 40 MW at T217 Condabri Central.
The cause of this non credible contingency event has been identified.
AEMO will reclassify this event as a credible contingency event due to lightning
Manager NEM Real Time Operations
Non-credible contingency event - VIC region - 10/01/2020
Non-credible contingency event - VIC region - 10/01/2020
At 1526 hrs 10/01/2020 the Eildon - Mt Beauty 1 220 kV Line and the Eildon - Mt Beauty 2 220 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. Bush fire in the vicinity.
Manager NEM Real Time Operations
Non-credible contingency event - NSW region - 09/01/2020
Non-credible contingency event - NSW region - 09/01/2020
At 2348 hrs 09/01/2020 the Munmorah - Sydney West 26 330 kV Line and the Munmorah -Tuggerah 2M 330 kV Line tripped and auto reclosed.
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
Update - Non-credible contingency event - NSW region - 06/01/2020
Update - Non-credible contingency event - NSW region - 06/01/2020
At 2207 hrs Vales Point Generator 330 kV Bus and Vales Point No1 330 /132 kV Transformer 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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
Manager NEM Real Time Operations