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126585RECLASSIFY CONTINGENCY17/04/2025 11:54:41 PM
Cancellation of a Non-Credible Contingency Event: Palmerston - Hadspen 3 & 4 110kV line and line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
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: TAS1
Lines: Palmerston - Hadspen 3 & 4 110kV and
Cancellation time: 17/04/2025 23:54
Constraint set(s) revoked:
T-HAPM_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 126584
Auto-generated on behalf of Manager NEM Real Time Operations
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: TAS1
Lines: Palmerston - Hadspen 3 & 4 110kV and
Cancellation time: 17/04/2025 23:54
Constraint set(s) revoked:
T-HAPM_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 126584
Auto-generated on behalf of Manager NEM Real Time Operations
126584RECLASSIFY CONTINGENCY17/04/2025 10:52:16 PM
Reclassification of a Non-Credible Contingency Event: Palmerston - Hadspen 3 & 4 110kV line and line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
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: 17/04/2025 22:52 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
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: 17/04/2025 22:52 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
126582MARKET INTERVENTION17/04/2025 02:45:57 PM
Cancellation - Possible intervention to manage power system security in South Australia (SA) region 18/04/2025
AEMO ELECTRICITY MARKET NOTICE
Cancellation - Possible intervention to manage power system security in South Australia (SA) region 18/04/2025
Refer Market Notice 126581
AEMO no longer foresees a possible requirement for intervention to manage power system security in SA region. The advice of possible intervention is cancelled from 1445 hrs 17/04/2025.
Manager NEM Real Time Operations
Cancellation - Possible intervention to manage power system security in South Australia (SA) region 18/04/2025
Refer Market Notice 126581
AEMO no longer foresees a possible requirement for intervention to manage power system security in SA region. The advice of possible intervention is cancelled from 1445 hrs 17/04/2025.
Manager NEM Real Time Operations
126581MARKET INTERVENTION17/04/2025 12:35:45 PM
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO ELECTRICITY MARKET NOTICE
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 0830 hrs 18/04/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 0830 hrs 18/04/2025.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
126580POWER SYSTEM EVENTS17/04/2025 12:38:34 PM
Update - Non-credible contingency event - QLD region - 16/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV line was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV line was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
126579POWER SYSTEM EVENTS16/04/2025 11:10:49 PM
Non-credible contingency event - QLD region - 16/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
126564MARKET INTERVENTION15/04/2025 01:31:54 PM
Cancellation - AEMO Intervention Event - SA region 15/04/2025
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - SA region 15/04/2025
Refer to Market Notice 126540
The AEMO Intervention Event and all associated directions are cancelled from 1330 hrs on 15/04/2025.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - SA region 15/04/2025
Refer to Market Notice 126540
The AEMO Intervention Event and all associated directions are cancelled from 1330 hrs on 15/04/2025.
Manager NEM Real Time Operations
126563MARKET INTERVENTION15/04/2025 01:31:44 PM
Cancellation: Direction issued to: Pelican Point Power Limited - PPCCGT PELICAN POINT
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126562
Direction is cancelled from: 1330 hrs 15/04/2025
Manager NEM Real Time Operations
Cancellation: Direction issued to: Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126562
Direction is cancelled from: 1330 hrs 15/04/2025
Manager NEM Real Time Operations
126562MARKET INTERVENTION15/04/2025 12:28:27 AM
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126541
PPCCGT PELICAN POINT at 0730 hrs 15/04/2025 to Remain synchronised and follow dispatch targets.
The PPCCGT PELICAN POINT direction is expected to stay in place until 1330 hrs 15/04/2025.
The direction update is issued at 0030 hrs 15/04/2025.
Manager NEM Real Time Operations
Update Direction - Pelican Point Power Limited - PPCCGT PELICAN POINT
Refer to Market Notice 126541
PPCCGT PELICAN POINT at 0730 hrs 15/04/2025 to Remain synchronised and follow dispatch targets.
The PPCCGT PELICAN POINT direction is expected to stay in place until 1330 hrs 15/04/2025.
The direction update is issued at 0030 hrs 15/04/2025.
Manager NEM Real Time Operations