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126031INTER-REGIONAL TRANSFER29/03/2025 04:45:41 AM
Inter-regional transfer limit variation - Mullumbimby - Dunoon - Lismore 132 kV 9U6 line - NSW region - 29/03/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Mullumbimby - Dunoon - Lismore 132 kV 9U6 line - NSW region - 29/03/2025
At 0427 hrs 29/03/2025 there was an unplanned outage of Mullumbimby - Dunoon - Lismore 132 kV 9U6 line.
The following constraint set(s) invoked at 0435 hrs 29/03/2025
N-LSDU_9U6
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Mullumbimby - Dunoon - Lismore 132 kV 9U6 line - NSW region - 29/03/2025
At 0427 hrs 29/03/2025 there was an unplanned outage of Mullumbimby - Dunoon - Lismore 132 kV 9U6 line.
The following constraint set(s) invoked at 0435 hrs 29/03/2025
N-LSDU_9U6
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
126023CONSTRAINTS28/03/2025 03:39:03 PM
Update to Victorian system normal Kerang voltage stability limit
AEMO ELECTRICITY MARKET NOTICE
AEMO has completed a review of a system normal voltage stability limit in north west Victoria as a result of commissioning of BESS at Koorangie. The revised limit manages pre-contingent flow on the Wemen to Koorangie 220 kV line to avoid voltage collapse at Koorangie, Kerang or Wemen on loss of the Crowlands to Bulgana to Horsham or Horsham to Murra Warra to Kiamal 220 kV line. The revised constraint equation includes the generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink and V-SA. Full details on the limits advice are to be published shortly on the AEMO website: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The revised limit will be implemented at 0900 hrs on Monday 31st March 2025, by updating V^^V_NIL_KGTS.
For full details on the factors this constraint equation has now been loaded into AEMO's pre-production systems.
For further details on this constraint equation please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
AEMO has completed a review of a system normal voltage stability limit in north west Victoria as a result of commissioning of BESS at Koorangie. The revised limit manages pre-contingent flow on the Wemen to Koorangie 220 kV line to avoid voltage collapse at Koorangie, Kerang or Wemen on loss of the Crowlands to Bulgana to Horsham or Horsham to Murra Warra to Kiamal 220 kV line. The revised constraint equation includes the generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink and V-SA. Full details on the limits advice are to be published shortly on the AEMO website: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The revised limit will be implemented at 0900 hrs on Monday 31st March 2025, by updating V^^V_NIL_KGTS.
For full details on the factors this constraint equation has now been loaded into AEMO's pre-production systems.
For further details on this constraint equation please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
126016MARKET SYSTEMS28/03/2025 02:07:44 PM
CHG0102344 - Maintenance activities to be performed on the Declared Wholesale Gas Market Systems Pre-Production.
Change Number: CHG0102344
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market (DWGM)
Change Title: Maintenance activities to be performed on the Declared Wholesale Gas Market Systems Pre-Production.
Change Start Date & Time: 02/04/2025 08:00:00
Change End Date & Time: 02/04/2025 17:30:00
Outage Start Date & Time: 02/04/2025 09:00:00
Outage End Date & Time: 02/04/2025 12:00:00
Environment: Pre-Production
Participant Impact and Requirements: This is a regular procedure to allow routine maintenance. short service outages over the day for DWGM services, includiing MIBB and Web Exchanger.
Pre-Production Declared Wholesale Gas Market Systems (DWGM)
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market (DWGM)
Change Title: Maintenance activities to be performed on the Declared Wholesale Gas Market Systems Pre-Production.
Change Start Date & Time: 02/04/2025 08:00:00
Change End Date & Time: 02/04/2025 17:30:00
Outage Start Date & Time: 02/04/2025 09:00:00
Outage End Date & Time: 02/04/2025 12:00:00
Environment: Pre-Production
Participant Impact and Requirements: This is a regular procedure to allow routine maintenance. short service outages over the day for DWGM services, includiing MIBB and Web Exchanger.
Pre-Production Declared Wholesale Gas Market Systems (DWGM)
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
126015MARKET SYSTEMS28/03/2025 02:00:12 PM
CHG0101896 - EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities .
Change Number: CHG0101896
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System_PreProd
Change Title: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities .
Change Start Date & Time: 01/04/2025 08:00:00
Change End Date & Time: 11/04/2025 17:00:00
Outage Start Date & Time: 03/04/2025 08:00:00
Outage End Date & Time: 03/04/2025 22:00:00
Environment: Pre-Production
Participant Impact and Requirements: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities. Maintenance activities will be conducted on the following dates:
1/04/2025
3/04/2025
8/04/2025
During the window,FPP calculations may be delayed at various points.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System_PreProd
Change Title: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities .
Change Start Date & Time: 01/04/2025 08:00:00
Change End Date & Time: 11/04/2025 17:00:00
Outage Start Date & Time: 03/04/2025 08:00:00
Outage End Date & Time: 03/04/2025 22:00:00
Environment: Pre-Production
Participant Impact and Requirements: EMMS Pre-Production Systems will be transferred to the alternative datacentre for maintenance activities. Maintenance activities will be conducted on the following dates:
1/04/2025
3/04/2025
8/04/2025
During the window,FPP calculations may be delayed at various points.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
126014MARKET SYSTEMS28/03/2025 01:57:12 PM
CHG0101950 - Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Change Number: CHG0101950
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Cisco IP Phone
Change Title: Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Change Start Date & Time: 01/04/2025 01:00:00
Change End Date & Time: 01/04/2025 06:00:00
Outage Start Date & Time: 01/04/2025 01:00:00
Outage End Date & Time: 01/04/2025 06:00:00
Environment: Production
Participant Impact and Requirements: External/Market
Outage Duration:
1 x 15 minutes during the window
Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically rerouted via Sydney).
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Cisco IP Phone
Change Title: Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Change Start Date & Time: 01/04/2025 01:00:00
Change End Date & Time: 01/04/2025 06:00:00
Outage Start Date & Time: 01/04/2025 01:00:00
Outage End Date & Time: 01/04/2025 06:00:00
Environment: Production
Participant Impact and Requirements: External/Market
Outage Duration:
1 x 15 minutes during the window
Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically rerouted via Sydney).
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
125993INTER-REGIONAL TRANSFER27/03/2025 11:57:49 AM
Inter-regional transfer limit variation - Hazelwood -South Morang No.1 500 kV line - VIC region - 27/03/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Hazelwood -South Morang No.1 500 kV line - VIC region - 27/03/2025
At 1150 hrs 27/03/2025 there was a short notice outage of Hazelwood -South Morang No.1 500 kV line.
The following constraint set(s) invoked at 1150 hrs 27/03/2025
V-HWSM
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1,V-S-MNSP1,V-SA,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Hazelwood -South Morang No.1 500 kV line - VIC region - 27/03/2025
At 1150 hrs 27/03/2025 there was a short notice outage of Hazelwood -South Morang No.1 500 kV line.
The following constraint set(s) invoked at 1150 hrs 27/03/2025
V-HWSM
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1,V-S-MNSP1,V-SA,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
125990INTER-REGIONAL TRANSFER27/03/2025 08:27:19 AM
Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 27/03/2025
AEMO ELECTRICITY MARKET NOTICE
In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked automated constraint set CA_SYDS_56F70932 from 0820 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
VIC1-NSW1
Manager NEM Real Time Operations
In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked automated constraint set CA_SYDS_56F70932 from 0820 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
VIC1-NSW1
Manager NEM Real Time Operations
125964INTER-REGIONAL TRANSFER26/03/2025 04:39:26 PM
Inter-regional transfer limit variation - Palmerston A 220kV Bus - TAS region - 26/03/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Palmerston A 220kV Bus - TAS region - 26/03/2025
Refer to Market Notice 125962.
The following constraint set(s) invoked from 1600 hrs to 1620 hrs 26/03/2026.
T-LIPM_WACB
T-LIPM_WACB_SL_N-2
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Palmerston A 220kV Bus - TAS region - 26/03/2025
Refer to Market Notice 125962.
The following constraint set(s) invoked from 1600 hrs to 1620 hrs 26/03/2026.
T-LIPM_WACB
T-LIPM_WACB_SL_N-2
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
125959MARKET SYSTEMS26/03/2025 03:22:45 PM
CHG0102325 - Maintenance activities to be performed on the Gas Short Term Trading Market Systems Pre-Production.
Change Number: CHG0102325
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Short Term Trading Market (STTM)
Change Title: Maintenance activities to be performed on the Gas Short Term Trading Market Systems Pre-Production.
Change Start Date & Time: 31/03/2025 08:00:00
Change End Date & Time: 31/03/2025 17:30:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Pre-Production
Participant Impact and Requirements: This is a regular procedure to allow routine maintenance. Short service outages over the day for STTM services including SWEX and MIS.
Pre-Production Gas Short Term Trading Market (STTM)
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Short Term Trading Market (STTM)
Change Title: Maintenance activities to be performed on the Gas Short Term Trading Market Systems Pre-Production.
Change Start Date & Time: 31/03/2025 08:00:00
Change End Date & Time: 31/03/2025 17:30:00
Outage Start Date & Time:
Outage End Date & Time:
Environment: Pre-Production
Participant Impact and Requirements: This is a regular procedure to allow routine maintenance. Short service outages over the day for STTM services including SWEX and MIS.
Pre-Production Gas Short Term Trading Market (STTM)
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .