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117341RECLASSIFY CONTINGENCY13/07/2024 04:44:46 PM
Cancellation of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 500kV line in NSW1 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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Cancellation time: 13/07/2024 16:44
Constraint set(s) revoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
Refer AEMO Electricity Market Notice 117340
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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Cancellation time: 13/07/2024 16:44
Constraint set(s) revoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
Refer AEMO Electricity Market Notice 117340
Auto-generated on behalf of Manager NEM Real Time Operations
117340RECLASSIFY CONTINGENCY13/07/2024 03:41:56 PM
Reclassification of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 500kV line in NSW1 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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Duration: 13/07/2024 15:41 until further notice
Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Duration: 13/07/2024 15:41 until further notice
Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
Auto-generated on behalf of Manager NEM Real Time Operations
117337NON-CONFORMANCE12/07/2024 07:55:20 AM
NON-CONFORMANCE Region QLD1 Friday, 12 July 2024
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Friday, 12 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 12/07/2024 07:05 to 12/07/2024 07:55
Amount: -74 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Friday, 12 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 12/07/2024 07:05 to 12/07/2024 07:55
Amount: -74 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
117312MARKET INTERVENTION07/07/2024 02:04:11 PM
Cancellation - AEMO Intervention Event - SA region 05/07/2024
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - SA region 05/07/2024
Refer to Market Notice 117295
The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs on 07/07/2024.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - SA region 05/07/2024
Refer to Market Notice 117295
The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs on 07/07/2024.
Manager NEM Real Time Operations
117311MARKET INTERVENTION07/07/2024 02:01:02 PM
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN
Refer to Market Notice 117310
Direction is cancelled from: 1400 hrs 07/07/2024
Manager NEM Real Time Operations
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN
Refer to Market Notice 117310
Direction is cancelled from: 1400 hrs 07/07/2024
Manager NEM Real Time Operations
117310MARKET INTERVENTION07/07/2024 01:04:48 PM
Update - Direction - SA Region - 05/07/2024
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117303
The TORRB4 TORRENS ISLAN direction is now expected to stay in place until 1400 hrs 07/07/2024.
The direction update is issued at 1300 hrs 07/07/2024.
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117303
The TORRB4 TORRENS ISLAN direction is now expected to stay in place until 1400 hrs 07/07/2024.
The direction update is issued at 1300 hrs 07/07/2024.
Manager NEM Real Time Operations
117308NON-CONFORMANCE07/07/2024 09:30:22 AM
NON-CONFORMANCE Region QLD1 Sunday, 7 July 2024
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Sunday, 7 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: TARONG#3
Duration: 07/07/2024 09:05 to 07/07/2024 09:30
Amount: -16 MW
Constraint: NC-Q_TARONG#3
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Sunday, 7 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: TARONG#3
Duration: 07/07/2024 09:05 to 07/07/2024 09:30
Amount: -16 MW
Constraint: NC-Q_TARONG#3
Auto-generated on behalf of Manager NEM Real Time Operations
117307RECLASSIFY CONTINGENCY06/07/2024 11:04:37 PM
Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.
AEMO ELECTRICITY MARKET NOTICE.
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 117306 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 2300 hrs 06/07/2024.
Constraint set revoked: I-VS_250
Manager NEM Real Time Operations
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 117306 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 2300 hrs 06/07/2024.
Constraint set revoked: I-VS_250
Manager NEM Real Time Operations
117306RECLASSIFY CONTINGENCY06/07/2024 09:34:08 PM
Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA 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 SA region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
AEMO has taken the following action to maintain power system security at 2120 hrs 06/07/2024.
Constraint set invoked: I-VS_250
Duration: 2120 hrs 06/07/2024 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 SA region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
AEMO has taken the following action to maintain power system security at 2120 hrs 06/07/2024.
Constraint set invoked: I-VS_250
Duration: 2120 hrs 06/07/2024 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