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112079RECLASSIFY CONTINGENCY08/12/2023 12:41:55 PM
Reclassification of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV 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: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Duration: 08/12/2023 12:41 until further notice
Constraint set(s) invoked:
T-TUWA12_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: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Duration: 08/12/2023 12:41 until further notice
Constraint set(s) invoked:
T-TUWA12_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
112078RECLASSIFY CONTINGENCY08/12/2023 11:51:05 AM
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: 08/12/2023 11:51 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: 08/12/2023 11:51 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
112077RECLASSIFY CONTINGENCY08/12/2023 11:36:01 AM
Reclassification of a Non-Credible Contingency Event: Farrell - Reece No.1 220 kV line and Farrell - Reece No.2 220 kV 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 - Reece No.1 220 kV and Farrell - Reece No.2 220 kV
Duration: 08/12/2023 11:35 until further notice
Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
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 - Reece No.1 220 kV and Farrell - Reece No.2 220 kV
Duration: 08/12/2023 11:35 until further notice
Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Auto-generated on behalf of Manager NEM Real Time Operations
112074RECLASSIFY CONTINGENCY08/12/2023 10:50:21 AM
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 1050 hrs 08/12/2023.
Constraint set invoked: I-VS_250
Duration: 1050 hrs 08/12/2023. 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 1050 hrs 08/12/2023.
Constraint set invoked: I-VS_250
Duration: 1050 hrs 08/12/2023. 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
112073PRICES UNCHANGED08/12/2023 10:41:04 AM
[EventId:202312081010_confirmed] Prices for interval 08-Dec-2023 10:10 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:10.
In accordance with Market Notice 112060 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:10.
In accordance with Market Notice 112060 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
112072PRICES UNCHANGED08/12/2023 10:39:47 AM
[EventId:202312081035_confirmed] Prices for interval 08-Dec-2023 10:35 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:35.
In accordance with Market Notice 112067 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:35.
In accordance with Market Notice 112067 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
112071PRICES UNCHANGED08/12/2023 10:38:48 AM
[EventId:202312081030_confirmed] Prices for interval 08-Dec-2023 10:30 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:30.
In accordance with Market Notice 112066 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:30.
In accordance with Market Notice 112066 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
112070PRICES UNCHANGED08/12/2023 10:37:39 AM
[EventId:202312081025_confirmed] Prices for interval 08-Dec-2023 10:25 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:25.
In accordance with Market Notice 112064 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:25.
In accordance with Market Notice 112064 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
112069PRICES UNCHANGED08/12/2023 10:36:38 AM
[EventId:202312081020_confirmed] Prices for interval 08-Dec-2023 10:20 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:20.
In accordance with Market Notice 112062 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 8 December 2023
PRICES ARE NOW CONFIRMED for trading interval 08-Dec-2023 10:20.
In accordance with Market Notice 112062 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.