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Reclassification of a Non-Credible Contingency Event: Palmerston - Hadspen 3 & 4 110kV line and line in TAS1 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: TAS1
Lines: Palmerston - Hadspen 3 & 4 110kV and
Duration: 15/08/2024 17:11 until further notice
Constraint set(s) invoked:
T-HAPM_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE Region SA1 Thursday, 15 August 2024
NON-CONFORMANCE SA1 Region Thursday, 15 August 2024
AEMO has declared the following units comprising an Aggregate Dispatch Group as non-conforming under clause 3.8.23 of the National Electricity Rules:
Units: TB2BG1, TB2BL1
Aggregate Dispatch Group: TB2HYB_ADG1
Duration: 15/08/2024 11:05 to 15/08/2024 12:40
Amount: -28 MW
Constraint: NC-S_TB2HYB_ADG1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE Region SA1 Thursday, 15 August 2024
NON-CONFORMANCE SA1 Region Wednesday, 14 August 2024
AEMO has declared the following units comprising an Aggregate Dispatch Group as non-conforming under clause 3.8.23 of the National Electricity Rules:
Units: TB2BG1, TB2BL1
Aggregate Dispatch Group: TB2HYB_ADG1
Duration: 14/08/2024 15:50 to 15/08/2024 10:10
Amount: -28 MW
Constraint: NC-S_TB2HYB_ADG1
Auto-generated on behalf of Manager NEM Real Time Operations
Inter-Regional Transfer limit variation - Directlink - NSW Region
Inter-Regional Transfer limit variation - Directlink - NSW Region
There has been an unplanned outage of the No 1 Leg of Directlink .
The following constraint set was invoked at 1620 hrs 14/08/2024
N-MBTE_1
The constraint set contains the following interconnector on the left hand side.
N-Q-MNSP1
Refer AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
NON-CONFORMANCE Region SA1 Wednesday, 14 August 2024
NON-CONFORMANCE SA1 Region Wednesday, 14 August 2024
AEMO has declared the following units comprising an Aggregate Dispatch Group as non-conforming under clause 3.8.23 of the National Electricity Rules:
Units: TB2BG1, TB2BL1
Aggregate Dispatch Group: TB2HYB_ADG1
Duration: 14/08/2024 10:30 to 14/08/2024 15:20
Amount: 26 MW
Constraint: NC-S_TB2HYB_ADG1
Auto-generated on behalf of Manager NEM Real Time Operations
Inter-regional transfer limit variation - CollectorWF-Marulan 4 330kV LINE - NSW region - 14/08/2024
Inter-regional transfer limit variation - CollectorWF-Marulan 4 330kV LINE - NSW region - 14/08/2024
At 1006 hrs 14/08/2024 there was a short notice outage of CollectorWF-Marulan 4 330kV LINE.
The following constraint set(s) invoked at 1000 hrs 14/08/2024
N-CTMN_4_WG_CLOSE
This constraint set(s) contains equations with the following interconnectors on the LHS.
VIC1-NSW1,N-Q-MNSP1,NSW1-QLD1,V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal condition - NEM region.
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 117660 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 0845hrs 14/08/2024.
No constraints were invoked during this event
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Collector - Marulan No 4 330kV Line - NSW region - 14/08/2024
Inter-regional transfer limit variation - Collector - Marulan No 4 330kV Line - NSW region - 14/08/2024
A planned outage of Collector - Marulan No 4 330kV Line in the NSW region was scheduled from 0800 hrs 14/08/2024 to 1700 hrs 02/09/2024.
The outage has been cancelled.
Constraint set(s) invoked: N-CTMN_4_WG_CLOSE
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
[EventId:202408131120_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 13 August 2024 11:20
Issued by Australian Energy Market Operator Ltd at 1120 hrs on 13 August 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 13 August 2024.
Refer to market notice: 117661
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 1120 hrs on 13 August 2024.
This is an AEMO autogenerated Market Notice.