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112405RECLASSIFY CONTINGENCY16/12/2023 11:45:55 AM
Reclassification of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV 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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 16/12/2023 11:45 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 16/12/2023 11:45 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Auto-generated on behalf of Manager NEM Real Time Operations
112395RECLASSIFY CONTINGENCY15/12/2023 09:59:35 PM
Cancellation of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV 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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Cancellation time: 15/12/2023 21:59
Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Refer AEMO Electricity Market Notice 112379
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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Cancellation time: 15/12/2023 21:59
Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Refer AEMO Electricity Market Notice 112379
Auto-generated on behalf of Manager NEM Real Time Operations
112391RECLASSIFY CONTINGENCY15/12/2023 04:30:36 PM
Cancellation of a Reclassification of a Non-Credible Contingency Event: Ross No.1 275 kV SVC and Ross No.4 275/132 kV transformer in QLD Region
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event in the Qld region.
Based on the advice from the asset owner, AEMO considers the trip of the Ross No.1 275 kV SVC and Ross No.4 275/132 kV transformer is no longer reasonably possible. Accordingly, its classification has reverted to a non-credible contingency event.
Region: QLD
Elements: Ross No.1 275 kV SVC and Ross No.4 275/132 kV transformer.
Cancellation time: 1630 hrs 15/12/2023
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 109794
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event in the Qld region.
Based on the advice from the asset owner, AEMO considers the trip of the Ross No.1 275 kV SVC and Ross No.4 275/132 kV transformer is no longer reasonably possible. Accordingly, its classification has reverted to a non-credible contingency event.
Region: QLD
Elements: Ross No.1 275 kV SVC and Ross No.4 275/132 kV transformer.
Cancellation time: 1630 hrs 15/12/2023
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 109794
Manager NEM Real Time Operations
112388MARKET INTERVENTION15/12/2023 04:00:18 PM
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 14/12/2023
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 14/12/2023
Refer Market Notice 112326
The AEMO Intervention Event and all associated directions are cancelled from 1600 hrs 15/12/2023
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 14/12/2023
Refer Market Notice 112326
The AEMO Intervention Event and all associated directions are cancelled from 1600 hrs 15/12/2023
Manager NEM Real Time Operations
112383MARKET INTERVENTION15/12/2023 02:47:08 PM
Direction - SA region 15/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 15/12/2023
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1450 hrs on 15/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 15/12/2023
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1450 hrs on 15/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
112380MARKET INTERVENTION15/12/2023 02:20:50 PM
Update - Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 112377
The synchronous generating units currently expected to be synchronised in SA from 0630 hrs 16/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1445 hrs 15/12/2023, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 112377
The synchronous generating units currently expected to be synchronised in SA from 0630 hrs 16/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1445 hrs 15/12/2023, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
112379RECLASSIFY CONTINGENCY15/12/2023 12:58:05 PM
Reclassification of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV 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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 15/12/2023 12:58 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 15/12/2023 12:58 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Auto-generated on behalf of Manager NEM Real Time Operations
112377MARKET INTERVENTION15/12/2023 12:43:13 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 16/12/2023 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 16/12/2023 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
112375RECLASSIFY CONTINGENCY15/12/2023 11:59:23 AM
Cancellation of a Non-Credible Contingency Event: Edmonton - Woree 7284 132 kV Line, Barron Gorge - Kamerunga 7143 132 kV Line and the Barron Gorge - Kamerunga 7184 132 kV Line in QLD Region
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event in the Qld region.
Based on the advice from the asset owner, AEMO considers the trip of the Edmonton - Woree 7284 132 kV Line , Barron Gorge - Kamerunga 7143 132 kV Line and the Barron Gorge - Kamerunga 7184 132 kV Line is no longer reasonably possible. Accordingly, its classification has reverted to a non-credible contingency event.
Region: QLD
Elements: Edmonton - Woree 7284 132 kV Line, Barron Gorge - Kamerunga 7143 132 kV Line and the Barron Gorge - Kamerunga 7184 132 kV Line
Cancellation time: 1200 hrs 15/12/2023
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 102439
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event in the Qld region.
Based on the advice from the asset owner, AEMO considers the trip of the Edmonton - Woree 7284 132 kV Line , Barron Gorge - Kamerunga 7143 132 kV Line and the Barron Gorge - Kamerunga 7184 132 kV Line is no longer reasonably possible. Accordingly, its classification has reverted to a non-credible contingency event.
Region: QLD
Elements: Edmonton - Woree 7284 132 kV Line, Barron Gorge - Kamerunga 7143 132 kV Line and the Barron Gorge - Kamerunga 7184 132 kV Line
Cancellation time: 1200 hrs 15/12/2023
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 102439
Manager NEM Real Time Operations