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112170RECLASSIFY CONTINGENCY11/12/2023 07:44:18 AM
Update - Non-credible contingency event - SA region - 11/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 11/12/2023
Refer AEMO Electricity Market Notice 112165
Region: SA
The following constraint set(s) invoked:
Initially S-MNWT and S-MN_0 then replaced with S-BR_MN+MN_WT
This constraint set(s) contains equations with the following interconnectors on the LHS:
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Update - Non-credible contingency event - SA region - 11/12/2023
Refer AEMO Electricity Market Notice 112165
Region: SA
The following constraint set(s) invoked:
Initially S-MNWT and S-MN_0 then replaced with S-BR_MN+MN_WT
This constraint set(s) contains equations with the following interconnectors on the LHS:
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
112161RECLASSIFY CONTINGENCY10/12/2023 03:45:45 PM
Reclassification of a Non-Credible Contingency Event: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 10/12/2023 15:45 hrs until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 10/12/2023 15:45 hrs until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
112156RECLASSIFY CONTINGENCY10/12/2023 12:30:18 PM
Reclassification of a Non-Credible Contingency Event: Para-Templers West and Magill-Torrens Island A 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
Duration: 10/12/2023 12:30 hrs until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
Duration: 10/12/2023 12:30 hrs until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
112155RECLASSIFY CONTINGENCY09/12/2023 10:59:35 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: 09/12/2023 22:59
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 112136
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: 09/12/2023 22:59
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 112136
Auto-generated on behalf of Manager NEM Real Time Operations
112154RESERVE NOTICE09/12/2023 06:50:27 PM
Cancellation of Actual (LOR1) condition in the NSW region - 09/12/2023
AEMO ELECTRICITY MARKET NOTICE
Cancellation of Actual (LOR1) condition in the NSW region - 09/12/2023
The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.112137 is cancelled at 1850 hrs 09/12/2023.
Manager NEM Real Time Operations
Cancellation of Actual (LOR1) condition in the NSW region - 09/12/2023
The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.112137 is cancelled at 1850 hrs 09/12/2023.
Manager NEM Real Time Operations
112137RESERVE NOTICE09/12/2023 05:16:02 PM
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 09/12/2023
AEMO ELECTRICITY MARKET NOTICE
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 09/12/2023
An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1700 hrs.
The Actual LOR1 condition is forecast to exist until 1830 hrs.
The forecast capacity reserve requirement is 1370 MW.
The minimum capacity reserve available is 1344 MW.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 09/12/2023
An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1700 hrs.
The Actual LOR1 condition is forecast to exist until 1830 hrs.
The forecast capacity reserve requirement is 1370 MW.
The minimum capacity reserve available is 1344 MW.
Manager NEM Real Time Operations
112136RECLASSIFY CONTINGENCY09/12/2023 03:57:50 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: 09/12/2023 15:57 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: 09/12/2023 15:57 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
112131RECLASSIFY CONTINGENCY09/12/2023 01:18:47 PM
Cancellation of the Reclassification of a Non-Credible Contingency Event: Loss of Sheffield 220 kV switchyard (all 220 kV buses) in Tas due to planned work
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned work. AEMO considers the simultaneous trip of the following plant is no longer reasonably possible. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Plant: Sheffield 220 kV switchyard (all 220 kV buses)
Cancellation time: 09/12/2023 13:20 hrs
Constraint set revoked:
T-SH_220_N-2
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Refer AEMO Electricity Market Notice 112089
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned work. AEMO considers the simultaneous trip of the following plant is no longer reasonably possible. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Plant: Sheffield 220 kV switchyard (all 220 kV buses)
Cancellation time: 09/12/2023 13:20 hrs
Constraint set revoked:
T-SH_220_N-2
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Refer AEMO Electricity Market Notice 112089
Manager NEM Real Time Operations
112128RECLASSIFY CONTINGENCY09/12/2023 09:05:55 AM
Reclassification of a Non-Credible Contingency Event: Loss of Sheffield 220 kV switchyard (all 220 kV buses) in Tas due to planned work
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to planned work.
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: TAS
Plant: Sheffield 220 kV switchyard (all 220 kV buses)
Duration: 09/12/2023 : 0900 hrs until further notice
Constraint set(s) invoked: T-SH_220_N-2
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to planned work.
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: TAS
Plant: Sheffield 220 kV switchyard (all 220 kV buses)
Duration: 09/12/2023 : 0900 hrs until further notice
Constraint set(s) invoked: T-SH_220_N-2
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Manager NEM Real Time Operations