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Cancellation of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 due to Lightning.
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: NSW1
Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Cancellation time: 09/12/2024 16:04
Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Refer AEMO Electricity Market Notice 121654
Auto-generated on behalf of Manager NEM Real Time Operations
[EventId:202412091530_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 09 December 2024 15:30
Issued by Australian Energy Market Operator Ltd at 1530 hrs on 9 December 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 9 December 2024.
Refer to market notice: 121655
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 1530 hrs on 9 December 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202412091435_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 09 December 2024 14:35
Issued by Australian Energy Market Operator Ltd at 1435 hrs on 9 December 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 9 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 1435 hrs on 9 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.
Reclassification of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 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: NSW1
Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 09/12/2024 13:59 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Auto-generated on behalf of Manager NEM Real Time Operations
STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the QLD Region on 10/12/2024
The Forecast LOR2 condition in the QLD region advised in AEMO Electricity Market Notice No. 121651 is cancelled at 1200 hrs 09/12/2024.
AEMO Operations
STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the QLD Region on 10/12/2024
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the QLD region for the following period:
[1.] From 1430 hrs 10/12/2024 to 1500 hrs 10/12/2024.
The forecast capacity reserve requirement is 810 MW.
The minimum capacity reserve available is 738 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the QLD Region on 10/12/2024
The Forecast LOR2 condition in the QLD region advised in AEMO Electricity Market Notice No. 121647 is cancelled at 2330 hrs 08/12/2024.
AEMO Operations
STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the QLD Region on 10/12/2024
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the QLD region for the following period:
[1.] From 1430 hrs 10/12/2024 to 1500 hrs 10/12/2024.
The forecast capacity reserve requirement is 819 MW.
The minimum capacity reserve available is 802 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
AEMO Operations
[EventId:202412081950_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 08 December 2024 19:50
Issued by Australian Energy Market Operator Ltd at 1950 hrs on 8 December 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 8 December 2024.
Refer to market notice: 121639
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 1950 hrs on 8 December 2024.
This is an AEMO autogenerated Market Notice.