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73318POWER SYSTEM EVENTS01/02/2020 01:23:49 PM
Non-credible contingency event - NSW region - 01/02/2020
AEMO ELECTRICITY MARKET NOTICE.
At 1307 hrs the Munmorah Main 330kV 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
At 1307 hrs the Munmorah Main 330kV 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
73269POWER SYSTEM EVENTS01/02/2020 07:36:10 AM
Non-credible contingency event - QLD region - 01/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 01/02/2020
At 0637 hrs the Braemar - Kumbarilla Park 275 kV 8883 line opened at Kumbarilla Park end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 01/02/2020
At 0637 hrs the Braemar - Kumbarilla Park 275 kV 8883 line opened at Kumbarilla Park end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
Manager NEM Real Time Operations
73215POWER SYSTEM EVENTS31/01/2020 05:21:59 PM
Update - Non-credible contingency event - Vic region - 31/01/2020
AEMO ELECTRICITY MARKET NOTICE
Update to Market Notice 73176
At 1324 hrs the Moorabool - Mortlake 500 kV Line and the Moorabool - Haunted Gully 500 kV Line tripped resulting in South Australia separating from Victoria.
These transmission lines are currently scheduled to return to service at 1700 hrs 14/02/20. Please refer to AEMO Network Outage Scheduler (NOS) for details.
Manager NEM Real Time Operations
Update to Market Notice 73176
At 1324 hrs the Moorabool - Mortlake 500 kV Line and the Moorabool - Haunted Gully 500 kV Line tripped resulting in South Australia separating from Victoria.
These transmission lines are currently scheduled to return to service at 1700 hrs 14/02/20. Please refer to AEMO Network Outage Scheduler (NOS) for details.
Manager NEM Real Time Operations
73176POWER SYSTEM EVENTS31/01/2020 02:02:03 PM
Non-credible contingency event - Vic region - 31/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Vic region - 31/01/2020
Update to Market Notice 73172
At 1324 hrs the Moorabool - Mortlake 500 kV Line and the Moorabool - Haunted Gully 500 kV Line tripped resulting in South Australia separating from Victoria.
AEMO did not instruct load shedding.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - Vic region - 31/01/2020
Update to Market Notice 73172
At 1324 hrs the Moorabool - Mortlake 500 kV Line and the Moorabool - Haunted Gully 500 kV Line tripped resulting in South Australia separating from Victoria.
AEMO did not instruct load shedding.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
73172POWER SYSTEM EVENTS31/01/2020 01:31:58 PM
Vic - SA Seperation Event - 31/01/20
AEMO ELECTRICITY MARKET NOTICE
At 1324 hrs, South Australia separated from Victoria. More details to follow
Manager NEM Real Time Operations
At 1324 hrs, South Australia separated from Victoria. More details to follow
Manager NEM Real Time Operations
73059POWER SYSTEM EVENTS27/01/2020 08:04:11 PM
Update - Non-credible contingency event - NSW region - 27/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 27/01/2020
Refer AEMO Electricity Market Notice 73057
At 1956 hrs the Kemps Creek A 330 kV Busbar 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 - NSW region - 27/01/2020
Refer AEMO Electricity Market Notice 73057
At 1956 hrs the Kemps Creek A 330 kV Busbar 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
73057POWER SYSTEM EVENTS27/01/2020 05:49:55 PM
Non-credible contingency event - NSW region - 27/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 27/01/2020
At 1738 hrs the Kemps Creek A 330 kV Busbar 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 - NSW region - 27/01/2020
At 1738 hrs the Kemps Creek A 330 kV Busbar 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
73008POWER SYSTEM EVENTS25/01/2020 02:52:49 PM
Non-credible contingency event - NSW region - 25/01/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 25/01/2020
At 1348 hrs the Lismore - Mullumbimby Tee Dunoon 9U6 and 9U7 132 kV Lines and Directlink 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
Non-credible contingency event - NSW region - 25/01/2020
At 1348 hrs the Lismore - Mullumbimby Tee Dunoon 9U6 and 9U7 132 kV Lines and Directlink 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
72995POWER SYSTEM EVENTS25/01/2020 03:12:07 AM
Update - Non-credible contingency event - Qld region -25 January 2020
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Qld region - 25 January 2020
Refer AEMO ELECTRICITY MARKET NOTICE 72991 and 72989
At 0020 hrs in Far North Qld the Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line opened and auto reclosed due to lightning.
The Edmonton - Innisfail (7139) 132kV line and the Tully - Woree (7301) 132 kV line opened and auto reclosed by design
The Mt Emerald - Walkamin (8903) 275 kV line opened by design.
The cause of this non credible contingency event has been identified as lightning
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified the trip of Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line event as a credible contingency event due to lightning.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Qld region - 25 January 2020
Refer AEMO ELECTRICITY MARKET NOTICE 72991 and 72989
At 0020 hrs in Far North Qld the Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line opened and auto reclosed due to lightning.
The Edmonton - Innisfail (7139) 132kV line and the Tully - Woree (7301) 132 kV line opened and auto reclosed by design
The Mt Emerald - Walkamin (8903) 275 kV line opened by design.
The cause of this non credible contingency event has been identified as lightning
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified the trip of Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line event as a credible contingency event due to lightning.
Manager NEM Real Time Operations