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127406POWER SYSTEM EVENTS06/06/2025 08:43:55 AM
Non-credible contingency event - VIC region - 06/06/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - VIC region - 06/06/2025
At 0830 hrs the Wodonga No 2 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 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 - VIC region - 06/06/2025
At 0830 hrs the Wodonga No 2 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 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
127324INTER-REGIONAL TRANSFER28/05/2025 05:55:45 PM
Inter-regional transfer limit variation - Armidale Dumaresq 8C and Dumaresq Bulli 8M 330kV lines - NSW region - 28/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Armidale Dumaresq 8C and Dumaresq Bulli 8M 330kV lines - NSW region - 28/05/2025
At 1750 hrs 28/05/2025 there was a short notice outage of Armidale Dumaresq 8C and Dumaresq Bulli 8M 330kV lines.
The following constraint set(s) invoked at 1745 hrs 28/05/2025
N-ARDM_8C
N-X_8C+DM+TW_SVC
and the following constraint set(s) invoked at 1750 hrs 28/05/2025
I-BCDM_ONE
N-X_8L+DM+TW_SVC
These constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,T-V-MNSP1,N-Q-MNSP1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Armidale Dumaresq 8C and Dumaresq Bulli 8M 330kV lines - NSW region - 28/05/2025
At 1750 hrs 28/05/2025 there was a short notice outage of Armidale Dumaresq 8C and Dumaresq Bulli 8M 330kV lines.
The following constraint set(s) invoked at 1745 hrs 28/05/2025
N-ARDM_8C
N-X_8C+DM+TW_SVC
and the following constraint set(s) invoked at 1750 hrs 28/05/2025
I-BCDM_ONE
N-X_8L+DM+TW_SVC
These constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,T-V-MNSP1,N-Q-MNSP1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
127304POWER SYSTEM EVENTS27/05/2025 12:30:40 PM
Update - Non-credible contingency event - NSW region - 07/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 07/03/2025
Refer AEMO Electricity Market Notice 125536
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 no longer reclassify this event as a credible contingency event.
Region: NSW
Elements:
- Lismore132 - Mullumbimby 9U6 132kV Line
- Lismore132 - Mullumbimby 9U7 132kV Line
- Ewingsdale - Mullumbimby 9G5 132kV Line
Duration: 1730 hrs 11/03/2025 until 1230 hrs 27/05/2025
Constraint set(s) invoked: NONE
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW region - 07/03/2025
Refer AEMO Electricity Market Notice 125536
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 no longer reclassify this event as a credible contingency event.
Region: NSW
Elements:
- Lismore132 - Mullumbimby 9U6 132kV Line
- Lismore132 - Mullumbimby 9U7 132kV Line
- Ewingsdale - Mullumbimby 9G5 132kV Line
Duration: 1730 hrs 11/03/2025 until 1230 hrs 27/05/2025
Constraint set(s) invoked: NONE
Manager NEM Real Time Operations
127301INTER-REGIONAL TRANSFER27/05/2025 03:50:02 AM
Inter-regional transfer limit variation - Brinkworth - Templers West 275 kV line - SA region - 27/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Brinkworth - Templers West 275 kV line - SA region - 27/05/2025
At 0337 hrs 27/05/2025 there was an unplanned outage of Brinkworth - Templers West 275 kV line.
The following constraint set(s) invoked at 0340 hrs 27/05/2025
S-BRTW
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Brinkworth - Templers West 275 kV line - SA region - 27/05/2025
At 0337 hrs 27/05/2025 there was an unplanned outage of Brinkworth - Templers West 275 kV line.
The following constraint set(s) invoked at 0340 hrs 27/05/2025
S-BRTW
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
127264INTER-REGIONAL TRANSFER26/05/2025 08:24:35 AM
Inter-regional transfer limit variation - Woolooga No. 4 275 kV SVC - QLD region - 26/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Woolooga No. 4 275 kV SVC - QLD region - 26/05/2025
At 0808 hrs 26/05/2025 there was an unplanned outage of Woolooga No. 4 275 kV SVC.
The following constraint set(s) invoked at 0815 hrs 26/05/2025
Q-WO_VC
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Woolooga No. 4 275 kV SVC - QLD region - 26/05/2025
At 0808 hrs 26/05/2025 there was an unplanned outage of Woolooga No. 4 275 kV SVC.
The following constraint set(s) invoked at 0815 hrs 26/05/2025
Q-WO_VC
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
127116INTER-REGIONAL TRANSFER18/05/2025 10:10:14 AM
Inter-regional transfer limit variation - Black Range No.1 275 kV Series Capacitor - SA region - 18/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Black Range No.1 275 kV Series Capacitor - SA region - 18/05/2025
At 0916 hrs 18/05/2025 there was an unplanned outage of Black Range No.1 275 kV Series Capacitor.
The following constraint set(s) invoked at 0955 hrs 18/05/2025
S-BC_CP
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Black Range No.1 275 kV Series Capacitor - SA region - 18/05/2025
At 0916 hrs 18/05/2025 there was an unplanned outage of Black Range No.1 275 kV Series Capacitor.
The following constraint set(s) invoked at 0955 hrs 18/05/2025
S-BC_CP
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
127027INTER-REGIONAL TRANSFER13/05/2025 04:10:07 PM
Inter-regional transfer limit variation - North West Bend to Monash No. 2 132 kV Line - SA region - 13/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - North West Bend to Monash No. 2 132 kV Line - SA region - 13/05/2025
At 1555 hrs 13/05/2025 there was an unplanned outage of North West Bend to Monash No. 2 132 kV Line.
The following constraint set(s) invoked at 1555 hrs 13/05/2025
S-NWCB6022+6023
S-MH_CB6153
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - North West Bend to Monash No. 2 132 kV Line - SA region - 13/05/2025
At 1555 hrs 13/05/2025 there was an unplanned outage of North West Bend to Monash No. 2 132 kV Line.
The following constraint set(s) invoked at 1555 hrs 13/05/2025
S-NWCB6022+6023
S-MH_CB6153
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
126930INTER-REGIONAL TRANSFER07/05/2025 02:33:00 PM
Inter-regional transfer limit variation - Newcastle - Eraring (90) 330 kV line - NSW region - 07/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Newcastle - Eraring (90) 330 kV line - NSW region - 07/05/2025
A planned outage of Newcastle - Eraring (90) 330 kV line in the NSW region was scheduled from 0700 hrs 07/05/2025 to 1700 hrs 10/05/2025.
The outage has been completed and Newcastle - Eraring (90) 330 kV line returned to service at 1335 hrs 07/05/2025
Constraint set(s) revoked: N-ERNC_90
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Newcastle - Eraring (90) 330 kV line - NSW region - 07/05/2025
A planned outage of Newcastle - Eraring (90) 330 kV line in the NSW region was scheduled from 0700 hrs 07/05/2025 to 1700 hrs 10/05/2025.
The outage has been completed and Newcastle - Eraring (90) 330 kV line returned to service at 1335 hrs 07/05/2025
Constraint set(s) revoked: N-ERNC_90
Manager NEM Real Time Operations
126903INTER-REGIONAL TRANSFER06/05/2025 12:59:40 PM
Inter-regional transfer limit variation - South East - Tailem Bend No. 2 275 kV Line - SA region - 06/05/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - South East - Tailem Bend No. 2 275 kV Line - SA region - 06/05/2025
At 1300 hrs 06/05/2025 there was a short notice outage of South East - Tailem Bend No. 2 275 kV Line .
The following constraint set(s) invoked at 1300 hrs 06/05/2025
S-TBSE
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,NSW1-QLD1,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - South East - Tailem Bend No. 2 275 kV Line - SA region - 06/05/2025
At 1300 hrs 06/05/2025 there was a short notice outage of South East - Tailem Bend No. 2 275 kV Line .
The following constraint set(s) invoked at 1300 hrs 06/05/2025
S-TBSE
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,NSW1-QLD1,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations