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116099MARKET INTERVENTION12/04/2024 02:57:49 PM
Update - Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 116097
The synchronous generating units currently expected to be synchronised in SA from 0900 hrs 13/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 0700 hrs 13/04/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 116097
The synchronous generating units currently expected to be synchronised in SA from 0900 hrs 13/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 0700 hrs 13/04/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
116098POWER SYSTEM EVENTS12/04/2024 01:39:23 PM
Update - Non-credible contingency event - TAS region - 12/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 12/04/2024
Refer AEMO Electricity Market Notice 116095
At 1304 hrs the Sheffield - Farrell No.2 220 kV line 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 - TAS region - 12/04/2024
Refer AEMO Electricity Market Notice 116095
At 1304 hrs the Sheffield - Farrell No.2 220 kV line 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
116097MARKET INTERVENTION12/04/2024 12:45:22 PM
Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0900 hrs 13/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA .
Manager NEM Real Time Operations
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0900 hrs 13/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA .
Manager NEM Real Time Operations
116096MARKET SYSTEMS12/04/2024 11:34:02 AM
CHG0087945 | Completed | Production | Planned System Maintenance activity
Change Number: CHG0087945
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: EMS NEM - Network Outage Scheduler (NOS)
Change Title: Planned System Maintenance activity.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: EMS NEM - Network Outage Scheduler (NOS)
Change Title: Planned System Maintenance activity.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
116095POWER SYSTEM EVENTS12/04/2024 11:22:09 AM
Non-credible contingency event - TAS region - 12/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/04/2024
At 1048 hrs the Sheffield - Farrell No.2 220 kV line tripped during restoration due to fault on the line.
AEMO did not instruct load shedding.
AEMO has been advised of disconnection of major industrial load approximately 550 MW.
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 - 12/04/2024
At 1048 hrs the Sheffield - Farrell No.2 220 kV line tripped during restoration due to fault on the line.
AEMO did not instruct load shedding.
AEMO has been advised of disconnection of major industrial load approximately 550 MW.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
116094MARKET INTERVENTION12/04/2024 08:38:29 AM
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 11/04/2024
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 11/04/2024
Refer Market Notice 116089
The AEMO Intervention Event and all associated directions are cancelled from 0830 hrs 12/04/2024
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 11/04/2024
Refer Market Notice 116089
The AEMO Intervention Event and all associated directions are cancelled from 0830 hrs 12/04/2024
Manager NEM Real Time Operations
116089MARKET INTERVENTION11/04/2024 04:00:13 PM
Direction - SA region 11/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 11/04/2024
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1605 hrs on 11/04/2024.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 11/04/2024
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1605 hrs on 11/04/2024.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
116087MARKET INTERVENTION11/04/2024 03:01:36 PM
Update - Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 116085
The synchronous generating units currently expected to be synchronised in SA from 1000 hrs 12/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1600 hrs 11/04/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 116085
The synchronous generating units currently expected to be synchronised in SA from 1000 hrs 12/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1600 hrs 11/04/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
116086INTER-REGIONAL TRANSFER11/04/2024 02:57:43 PM
Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024
A planned outage of Hazelwood - South Morang No. 1 500 kV Line in the Vic region was scheduled from 0630 hrs 11/04/2024 to 1830 hrs 11/04/2024.
The outage has been completed and Hazelwood - South Morang No. 1 500 kV Line returned to service at 1450 hrs 11/04/2024.
Constraint set revoked: V-HWSM
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024
A planned outage of Hazelwood - South Morang No. 1 500 kV Line in the Vic region was scheduled from 0630 hrs 11/04/2024 to 1830 hrs 11/04/2024.
The outage has been completed and Hazelwood - South Morang No. 1 500 kV Line returned to service at 1450 hrs 11/04/2024.
Constraint set revoked: V-HWSM
Manager NEM Real Time Operations