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Reclassification of a Non-Credible Contingency Event: Tumoulin - Woree No.877 275 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: QLD1
Lines: Tumoulin - Woree No.877 275 kV and Chalumbin - Turkinje No.7166 132 kV
Duration: 18/12/2024 13:40 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
[EventId:202412181330_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 18 December 2024 13:30
Issued by Australian Energy Market Operator Ltd at 1331 hrs on 18 December 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 18 December 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 1330 hrs on 18 December 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:202412181300_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 18 December 2024 13:00
Issued by Australian Energy Market Operator Ltd at 1300 hrs on 18 December 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 18 December 2024.
Refer to market notice: 122161
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 18 December 2024.
This is an AEMO autogenerated Market Notice.
Cancellation - Reclassification of a Non-Credible Contingency Event - South Australia Region - 18/12/2024
Cancellation - Reclassification of a Non-Credible Contingency Event - South Australia Region - 18/12/2024
Refer to MN 107306
Based on advice from the asset owner, AEMO no longer considers the simultaneous trip of Robertstown - North West Bend No 1 132 kV Line and the North West Bend - Monash - Berri No 1 132 kV Line as a credible contingency event.
Therefore, AEMO cancels the reclassification as a credible contingency event from 1300 hrs 18/12/2024.
Manager NEM Real Time Operations
[EventId:202412181115_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 18 December 2024 11:15
Issued by Australian Energy Market Operator Ltd at 1115 hrs on 18 December 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 18 December 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 1115 hrs on 18 December 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:202412181100_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 18 December 2024 11:00
Issued by Australian Energy Market Operator Ltd at 1100 hrs on 18 December 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 18 December 2024.
Refer to market notice: 122155
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 18 December 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202412180935_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 18 December 2024 09:35
Issued by Australian Energy Market Operator Ltd at 0935 hrs on 18 December 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 18 December 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 18 December 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:202412180900_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 18 December 2024 09:00
Issued by Australian Energy Market Operator Ltd at 0900 hrs on 18 December 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 18 December 2024.
Refer to market notice: 122139
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 0900 hrs on 18 December 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202412180830_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 18 December 2024 08:30
Issued by Australian Energy Market Operator Ltd at 0830 hrs on 18 December 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 18 December 2024.
Refer to market notice: 122140
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.
The negative residue constraint NRM_VIC1_SA1 ceased operating at 0830 hrs on 18 December 2024.
This is an AEMO autogenerated Market Notice.