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Non-credible contingency event - QLD region - 24/04/2024
Non-credible contingency event - QLD region - 24/04/2024
At 0855 hrs the Ross - Guybal Munjan 8916 275 kV line tripped at the Guybal Munjan end only.
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
CHG0087670 | Production | MSATS-CATS Production Maintenance
A URM outage will occur between 11:15:00 - 11:45:00 AEST and have an expected outage duration of upto 20 minutes. During this time users will not be able to have new login sessions into TMM, OPDMS, NOS or EMMS WebPortal. Users who are already logged in will not be impacted.
An MSATS outage will occur from 10:00:00 - 16:00:00 AEST.
Participants should be aware that:
o MSATS, Meter data processing, RM reports, B2B, B2M screen, NMI Discovery, CDR, CDP will not be available
o Production participant passwords will be retained
o Users that log out and users that try to log in once the URM outage has commenced will only be able to log in after URM outage is complete. Users that are already logged in before the outage will not be impacted
o MSATS and NOS Server FTP sessions will be disabled during the outage - Wholesale MMS FTP will still be available
o Plain English constraints will not be available during the URM outage timeframe via the EMMS web portal
o The redirection menu will be unavailable - https://menu.prod.nemnet.net.au
Report any impacts to the Support Hub -1300 236 600
CHG0088931 | Production | Planned System Maintenance activity.
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: EMS NEM - Network Outage Scheduler (NOS)
Change Title: Planned System Maintenance activity.
Change Start Date & Time: 29/04/2024 11:00:00 AEST
Change End Date & Time: 29/04/2024 12:00:00 AEST
Outage Start Date & Time: 29/04/2024 11:00:00 AEST
Outage End Date & Time: 29/04/2024 12:00:00 AEST
Environment: Production
Participant Impact and Requirements: Network Outage Schedular (NOS) will be out of service during the maintenance activity. Please log off from NOS website during the outage. Users will have to log back in once the outage is completed. Please contact your NOS admin or AEMO support hub if your NOS account has been locked out after this change.
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.
Non-credible contingency event - VIC region - 23/04/2024
Non-credible contingency event - VIC region - 23/04/2024
At 1056 hrs the MOPS 11 Gen TX 2 Bus 500kV CB and the Dundonnell WF 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
CHG0088831 | Completed | Production | Identity Service Config Update in Production.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Identity Service (IDS)
Change Title: Identity Service Config Update in Production.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
CHG0088138 | Completed | Production | Brisbane MarketNet Firewall Refresh
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Firewall
Change Title: Brisbane MarketNet Firewall Refresh
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
CHG0088121 | Completed | Production | Production MSATS Lifecycle Maintenance
Change Number: CHG0088121
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: Production MSATS Lifecycle Maintenance
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
[EventId:202404201300_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 20 April 2024 13:00
Issued by Australian Energy Market Operator Ltd at 1300 hrs on 20 April 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 20 April 2024.
Refer to market notice: 116210
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the NSW to VIC directional interconnector.
The negative residue constraint NRM_NSW1_VIC1 ceased operating at 1300 hrs on 20 April 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202404201205_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 20 April 2024 12:05
Issued by Australian Energy Market Operator Ltd at 1205 hrs on 20 April 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 20 April 2024.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the NSW to VIC directional interconnector.
The negative residue constraint set NRM_NSW1_VIC1 commenced operating from 1205 hrs on 20 April 2024.
This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.