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118017RECLASSIFY CONTINGENCY31/08/2024 05:56:23 PM
Reclassification of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown 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: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 31/08/2024 17:56 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: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 31/08/2024 17:56 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
118016INTER-REGIONAL TRANSFER31/08/2024 04:31:20 PM
Inter-regional transfer limit variation - Armidale - Sapphire 8E 330 kV line - NSW region - 31/08/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Armidale - Sapphire 8E 330 kV line - NSW region - 31/08/2024
At 1630 hrs 31/08/2024 there was a short notice outage of Armidale - Sapphire 8E 330 kV line.
The following constraint set(s) invoked at 1630 hrs 31/08/2024
N-ARSR_8E, N-TW_SVC
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,T-V-MNSP1,N-Q-MNSP1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Armidale - Sapphire 8E 330 kV line - NSW region - 31/08/2024
At 1630 hrs 31/08/2024 there was a short notice outage of Armidale - Sapphire 8E 330 kV line.
The following constraint set(s) invoked at 1630 hrs 31/08/2024
N-ARSR_8E, N-TW_SVC
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,T-V-MNSP1,N-Q-MNSP1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
118015NON-CONFORMANCE31/08/2024 03:25:22 PM
NON-CONFORMANCE Region SA1 Saturday, 31 August 2024
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Saturday, 31 August 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: STARHLWF
Duration: 31/08/2024 14:50 to 31/08/2024 15:25
Amount: 26 MW
Constraint: NC-S_STARHLWF
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Saturday, 31 August 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: STARHLWF
Duration: 31/08/2024 14:50 to 31/08/2024 15:25
Amount: 26 MW
Constraint: NC-S_STARHLWF
Auto-generated on behalf of Manager NEM Real Time Operations
118014NON-CONFORMANCE31/08/2024 03:20:26 PM
NON-CONFORMANCE Region NSW1 Saturday, 31 August 2024
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Saturday, 31 August 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: HILLSTN1
Duration: 31/08/2024 15:05 to 31/08/2024 15:20
Amount: 85 MW
Constraint: NC-N_HILLSTN1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Saturday, 31 August 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: HILLSTN1
Duration: 31/08/2024 15:05 to 31/08/2024 15:20
Amount: 85 MW
Constraint: NC-N_HILLSTN1
Auto-generated on behalf of Manager NEM Real Time Operations
118013MARKET INTERVENTION31/08/2024 04:01:44 PM
Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117987
The TORRB3 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 02/09/2024.
The direction update is issued at 1600 hrs 31/08/2024.
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117987
The TORRB3 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 02/09/2024.
The direction update is issued at 1600 hrs 31/08/2024.
Manager NEM Real Time Operations
118012MARKET INTERVENTION31/08/2024 04:00:42 PM
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117986
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 02/09/2024.
The direction update is issued at 1600 hrs 31/08/2024.
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117986
The TORRB2 TORRENS ISLAN direction is now expected to stay in place until 0400 hrs 02/09/2024.
The direction update is issued at 1600 hrs 31/08/2024.
Manager NEM Real Time Operations
118011NON-CONFORMANCE31/08/2024 01:55:23 PM
NON-CONFORMANCE Region SA1 Saturday, 31 August 2024
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Saturday, 31 August 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MANNSF2
Duration: 31/08/2024 11:45 to 31/08/2024 13:55
Amount: 7 MW
Constraint: NC-S_MANNSF2
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Saturday, 31 August 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MANNSF2
Duration: 31/08/2024 11:45 to 31/08/2024 13:55
Amount: 7 MW
Constraint: NC-S_MANNSF2
Auto-generated on behalf of Manager NEM Real Time Operations
118010RECLASSIFY CONTINGENCY31/08/2024 02:41:03 PM
Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - TAS region
AEMO ELECTRICITY MARKET NOTICE.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the TAS region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
Duration: 1440 hrs 31/08/2024 until further notice.
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the TAS region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
Duration: 1440 hrs 31/08/2024 until further notice.
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
118009RECLASSIFY CONTINGENCY31/08/2024 07:29:07 AM
Cancellation of a Non-Credible Contingency Event: Norwood - Scottsdale 1 110kV line and Norwood-Derby-Scottsdale 110kV 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: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Cancellation time: 31/08/2024 07:29
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 117999
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: Norwood - Scottsdale 1 110kV and Norwood-Derby-Scottsdale 110kV
Cancellation time: 31/08/2024 07:29
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 117999
Auto-generated on behalf of Manager NEM Real Time Operations