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71402POWER SYSTEM EVENTS26/11/2019 12:44:10 PM
Non-credible contingency event - Qld region - 26/11/2019
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld region - 26/11/2019
At 1214 hrs the H2 South Pine No1 275 kV Bus and H2 South Pine No 5 275 kV / 110 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.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - Qld region - 26/11/2019
At 1214 hrs the H2 South Pine No1 275 kV Bus and H2 South Pine No 5 275 kV / 110 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.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
71262POWER SYSTEM EVENTS16/11/2019 11:10:14 PM
Update - Non-credible contingency event - Vic region - 16/11/2019
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Vic region - 16/11/2019
Refer AEMO Electricity Market Notice 71198
The Heywood - APD- Tarrone 500kV line and the Heywood - APD- Mortlake 500kV line have been returned to service and South Australia has been reconnected to the rest of the NEM at 2259 hrs 16/11/2019.
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 - Vic region - 16/11/2019
Refer AEMO Electricity Market Notice 71198
The Heywood - APD- Tarrone 500kV line and the Heywood - APD- Mortlake 500kV line have been returned to service and South Australia has been reconnected to the rest of the NEM at 2259 hrs 16/11/2019.
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
71198POWER SYSTEM EVENTS16/11/2019 06:31:19 PM
Non-credible contingency event - Vic region - 16/11/2019
AEMO ELECTRICITY MARKET NOTICE.
At 1806 hrs the Heywood - APD- Tarrone 500kV line and the Heywood - APD- Mortlake 500kV line tripped resulting in South Australia separating from the rest of the NEM..
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 1806 hrs the Heywood - APD- Tarrone 500kV line and the Heywood - APD- Mortlake 500kV line tripped resulting in South Australia separating from the rest of the NEM..
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
70979POWER SYSTEM EVENTS06/11/2019 07:24:39 PM
Non-credible contingency event - Tas region - 06/11/2019
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Tas region - 06/11/2019
At 1852 hrs theFarrell - Reece Nos 1 and 2 220kV 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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
Manager NEM Real Time Operations
Non-credible contingency event - Tas region - 06/11/2019
At 1852 hrs theFarrell - Reece Nos 1 and 2 220kV 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 has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
Manager NEM Real Time Operations
70519POWER SYSTEM EVENTS12/10/2019 12:41:43 AM
Update - Non-credible contingency event - Qld region - 11/10/2019
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE 70518
At 2125 hrs Barron Gorge unit 1 and unit 2 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
Refer AEMO ELECTRICITY MARKET NOTICE 70518
At 2125 hrs Barron Gorge unit 1 and unit 2 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
70518POWER SYSTEM EVENTS11/10/2019 10:41:52 PM
Non-credible contingency event - Qld region - 11/10/2019
AEMO ELECTRICITY MARKET NOTICE.
At 2125 hrs Barron Gorge unit 1 and unit 2 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 2125 hrs Barron Gorge unit 1 and unit 2 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
70458POWER SYSTEM EVENTS09/10/2019 07:31:25 AM
Non-credible contingency event - Vic region - 09/10/2019
AEMO ELECTRICITY MARKET NOTICE.
At 0634 hrs the Alcoa Portland Potline No. 1 and Potline No. 2 tripped.
AEMO did not instruct load shedding.
The cause of this non credible contingency event is under investigation.
Manager NEM Real Time Operations
At 0634 hrs the Alcoa Portland Potline No. 1 and Potline No. 2 tripped.
AEMO did not instruct load shedding.
The cause of this non credible contingency event is under investigation.
Manager NEM Real Time Operations
70456POWER SYSTEM EVENTS08/10/2019 06:00:19 PM
Update - Non-credible contingency event - NSW region - 08/10/2019
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE MN 70454
Coffs Harbour - Lismore No. 89 330 kV Line and Koolkhan - Lismore No. 967 132 kV Line have been 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
Refer AEMO ELECTRICITY MARKET NOTICE MN 70454
Coffs Harbour - Lismore No. 89 330 kV Line and Koolkhan - Lismore No. 967 132 kV Line have been 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
70454POWER SYSTEM EVENTS08/10/2019 04:16:58 PM
Non-credible contingency event - NSW region - 08/10/2019
AEMO ELECTRICITY MARKET NOTICE.
At 1438 hrs the Coffs Harbour - Lismore No. 89 330 kV Line and the Koolkhan - Lismore No. 967 132 kV Line tripped. Note - there was a prior planned outage of Lismore - Tenterfield 96L 132 kV Line.
AEMO did not instruct load shedding.
AEMO has been advised there was a disconnection of approximately 80 MW of bulk electrical load.
The cause of this non credible contingency event has been identified.
Manager NEM Real Time Operations
At 1438 hrs the Coffs Harbour - Lismore No. 89 330 kV Line and the Koolkhan - Lismore No. 967 132 kV Line tripped. Note - there was a prior planned outage of Lismore - Tenterfield 96L 132 kV Line.
AEMO did not instruct load shedding.
AEMO has been advised there was a disconnection of approximately 80 MW of bulk electrical load.
The cause of this non credible contingency event has been identified.
Manager NEM Real Time Operations