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CHG0091507 | Production | As part of the Platform Services Patching Program, webMethods Inactive Production Application Servers in Brisbane will have critical s
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Business to Business data exchange
Change Title: As part of the Platform Services Patching Program, webMethods Inactive Production Application Servers in Brisbane will have critical security patches applied.
Change Start Date & Time: 26/08/2024 08:00:00 AEST
Change End Date & Time: 28/08/2024 18:00:00 AEST
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: This is the Inactive Production environment, there is no impact for external participants.
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?d=pp_services_status for any planned/unplanned maintenance activities .
[EventId:202407300755_NRM_VIC1_NSW1_stopped] NEGRES CONSTRAINT NRM_VIC1_NSW1 ceased operating from 30 July 2024 07:55
Issued by Australian Energy Market Operator Ltd at 0755 hrs on 30 July 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 30 July 2024.
Refer to market notice: 117505
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.
The negative residue constraint NRM_VIC1_NSW1 ceased operating at 0755 hrs on 30 July 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202407300730_NRM_VIC1_NSW1_started] NEGRES CONSTRAINT NRM_VIC1_NSW1 started operating from 30 July 2024 07:30
Issued by Australian Energy Market Operator Ltd at 0730 hrs on 30 July 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 30 July 2024.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 0730 hrs on 30 July 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.
Update - Non-credible contingency event - QLD region - 30/07/2024
Update - Non-credible contingency event - QLD region - 30/07/2024
Refer AEMO Electricity Market Notice 117503
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: QLD
Elements: Darling Downs Power Station
Duration: 0720 hrs until further notice
Constraint set(s) invoked: Q-DARLING_DOWNS_N-2
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 30/07/2024
Non-credible contingency event - QLD region - 30/07/2024
At 0537 hrs the Darling Downs Power Station GT1, GT3 and and the steam turbine tripped from 484 MW.
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
RESERVE NOTICE MT PASA PUBLICATION 30 July 2024
Please note that MTPASA informs the market of potential reliability issues to allow the market to respond in the first instance, potentially avoiding the need for any AEMO intervention.
For further information, please refer to:
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data/Market-Management-System-MMS/Projected-Assessment-of-System-Adequacy
This notice supersedes Market Notice 117413 published on 23 July 2024.
Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast expected unserved energy levels over a two year period. If the expected annual unserved energy exceeds the maximum level specified by the Reliability Standard, a Low Reserve Condition is identified.
For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at https://www.aemo.com.au/Electricity/National
Forecasting
AEMO
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the TAS Region [beginning] on 29/07/2024
The Forecast LOR1 condition in the TAS region advised in AEMO Electricity Market Notice No. 117497 is cancelled at 0545 hrs 29/07/2024.
Manager NEM Real Time Operations
Update - Non-credible contingency event - QLD region - 27/07/2024
Update - Non-credible contingency event - QLD region - 27/07/2024
Refer AEMO Electricity Market Notice 117487
At 1702 hrs the H38 Goodna No. 2 275kV Bus and the H38 Goodna No. 1 275/132kV transformer 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
STPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the TAS Region on 31/07/2024
The Forecast LOR1 condition in the TAS region advised in AEMO Electricity Market Notice No. 117493 is cancelled at 1420 hrs 28/07/2024
No LOR condition is currently forecast in the STPASA period.
Manager NEM Real Time Operations