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Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 27/12/2023
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 27/12/2023
Refer Market Notice 112823
The AEMO Intervention Event and all associated directions are cancelled from 1700 hrs 02/01/2024
Manager NEM Real Time Operations
Possible intervention to manage power system security in SA Region
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 2100 hrs 03/01/2024 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
NEM Local Temperature Alerts for VIC from 02 Jan 2024 to 06 Jan 2024
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
VIC
Mildura Ap (39+ Deg C): 2nd Jan
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
Possible intervention to manage power system security in SA Region
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 2200 hrs 02/01/2024 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
Update - Lightning vulnerable equipment in QLD region
Update - Lightning vulnerable equipment in QLD region
Special Reclassification of Transmission Equipment during lightning
Refer to AEMO Electricity Market Notice 112581 and 112884.
At 1424 hrs 21/12/2023, the Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No. 3 275/110 kV transformers
The cause of the trip was identified as due to lightning.
In accordance with SO_OP_3715, AEMO now considers the H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers to be vulnerable due to lightning.
Manager NEM Real Time Operations
Update - Direction - SA Region - 27/12/2023
Update - Direction - SA Region - 27/12/2023
Refer Market Notice 112823
The AEMO intervention event that commenced from interval ending 1505 hrs on 27/12/2023 is continuing.
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.
Manager NEM Real Time Operations
[EventId:202401011200_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 01 January 2024 12:00
Issued by Australian Energy Market Operator Ltd at 1200 hrs on 1 January 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 1 January 2024.
Refer to market notice: 112960
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 1200 hrs on 1 January 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202401011040_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 01 January 2024 10:40
Issued by Australian Energy Market Operator Ltd at 1040 hrs on 1 January 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 1 January 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 1040 hrs on 1 January 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.
[EventId:202401011030_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 01 January 2024 10:30
Issued by Australian Energy Market Operator Ltd at 1030 hrs on 1 January 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 1 January 2024.
Refer to market notice: 112958
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 1030 hrs on 1 January 2024.
This is an AEMO autogenerated Market Notice.