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126587RECLASSIFY CONTINGENCY18/04/2025 03:29:40 AM
Cancellation of a Non-Credible Contingency Event: Lindisfarne - Mornington No.1 TEE line and Lindisfarne - Mornington No.2 TEE 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: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Cancellation time: 18/04/2025 03:29
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 126586
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: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Cancellation time: 18/04/2025 03:29
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 126586
Auto-generated on behalf of Manager NEM Real Time Operations
126586RECLASSIFY CONTINGENCY18/04/2025 02:27:20 AM
Reclassification of a Non-Credible Contingency Event: Lindisfarne - Mornington No.1 TEE line and Lindisfarne - Mornington No.2 TEE 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: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Duration: 18/04/2025 02:27 until further notice
Constraint set(s) invoked:
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: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Duration: 18/04/2025 02:27 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
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
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
126472NON-CONFORMANCE10/04/2025 03:35:16 PM
NON-CONFORMANCE Region NSW1 Thursday, 10 April 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Thursday, 10 April 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: QBYNB1
Duration: 10/04/2025 15:25 to 10/04/2025 15:35
Amount: -9 MW
Constraint: NC-N_QBYNB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Thursday, 10 April 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: QBYNB1
Duration: 10/04/2025 15:25 to 10/04/2025 15:35
Amount: -9 MW
Constraint: NC-N_QBYNB1
Auto-generated on behalf of Manager NEM Real Time Operations
126462NON-CONFORMANCE09/04/2025 07:05:12 PM
NON-CONFORMANCE Region NSW1 Wednesday, 9 April 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Wednesday, 9 April 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: VP6
Duration: 09/04/2025 19:00 to 09/04/2025 19:05
Amount: -38 MW
Constraint: NC-N_VP6
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Wednesday, 9 April 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: VP6
Duration: 09/04/2025 19:00 to 09/04/2025 19:05
Amount: -38 MW
Constraint: NC-N_VP6
Auto-generated on behalf of Manager NEM Real Time Operations
126414NON-CONFORMANCE07/04/2025 08:05:13 AM
NON-CONFORMANCE Region QLD1 Monday, 7 April 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Monday, 7 April 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 07/04/2025 07:55 to 07/04/2025 08:05
Amount: 16 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Monday, 7 April 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 07/04/2025 07:55 to 07/04/2025 08:05
Amount: 16 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations