Filter by category
Filter by Date
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.
[EventId:202401010935_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 01 January 2024 09:35
Issued by Australian Energy Market Operator Ltd at 0935 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 0935 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.
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
Cancellation of Minimum System Load 1 (MSL1) in the VIC Region on 31/12/2023
Cancellation - MSL1 - VIC Region
Refer Market Notice 112936
The MSL1 condition for 31/12/2023 is cancelled at 1600 hrs 31/12/2023
Manager NEM Real Time Operations
[EventId:202312311100_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 31 December 2023 11:00
Issued by Australian Energy Market Operator Ltd at 1100 hrs on 31 December 2023
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 31 December 2023.
Refer to market notice: 112935
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 1100 hrs on 31 December 2023.
This is an AEMO autogenerated Market Notice.