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116296RECLASSIFY CONTINGENCY23/04/2024 10:28:55 PM
Reclassification of a Non-Credible Contingency Event: Palmerston - Hadspen 3 & 4 110kV line and 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: Palmerston - Hadspen 3 & 4 110kV and
Duration: 23/04/2024 22:28 until further notice
Constraint set(s) invoked:
T-HAPM_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: Palmerston - Hadspen 3 & 4 110kV and
Duration: 23/04/2024 22:28 until further notice
Constraint set(s) invoked:
T-HAPM_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
116295RECLASSIFY CONTINGENCY23/04/2024 09:33:41 PM
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: 23/04/2024 21:33 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: 23/04/2024 21:33 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
116280MARKET INTERVENTION23/04/2024 05:48:19 PM
Update - Direction - SA Region - 22/04/2024
AEMO ELECTRICITY MARKET NOTICE
Update - Direction - SA Region - 22/04/2024
Refer Market Notice 116263
The AEMO intervention event that commenced from interval ending 1205 hrs on 22/04/2024 is continuing.
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.
Manager NEM Real Time Operations
Update - Direction - SA Region - 22/04/2024
Refer Market Notice 116263
The AEMO intervention event that commenced from interval ending 1205 hrs on 22/04/2024 is continuing.
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.
Manager NEM Real Time Operations
116277MARKET INTERVENTION23/04/2024 01:06:47 PM
Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0400 hrs 24/04/2024 will be inadequate to maintain a secure operating state in SA .
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 SA region
The synchronous generating units currently expected to be synchronised in SA from 0400 hrs 24/04/2024 will be inadequate to maintain a secure operating state in SA .
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
116271RECLASSIFY CONTINGENCY22/04/2024 01:44:46 PM
Cancellation of the reclassification of a Non-Credible contingency event: Farrell - Sheffield Nos 1 and 2 220kV Lines line in TAS due to Bushfire.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Bushfire. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any non credible event activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Lines: Farrell - Sheffield Nos 1 and 2 220kV Lines
Cancellation time: 13:40 hrs 22/04/2024
Constraint set(s) revoked:
T-FASH_N-2_CP4_SB
T-NIL_WCP_CLOSE
Refer AEMO Electricity Market Notice 116269
Manager NEM Real Time Operations
Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event due to Bushfire. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any non credible event activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Lines: Farrell - Sheffield Nos 1 and 2 220kV Lines
Cancellation time: 13:40 hrs 22/04/2024
Constraint set(s) revoked:
T-FASH_N-2_CP4_SB
T-NIL_WCP_CLOSE
Refer AEMO Electricity Market Notice 116269
Manager NEM Real Time Operations
116269RECLASSIFY CONTINGENCY22/04/2024 01:05:20 PM
Reclassification of a Non-Credible Contingency Event: Farrell - Sheffield No. 1 and 2 220kV Lines in TAS due to Bushfire.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Bushfire. 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
Lines: Farrell - Sheffield No. 1 and 2 220kV Lines
Duration:12:50 hrs 22/04/2024 until further notice
Constraint set(s) invoked:
T-NIL_WCP_CLOSE
F-FASH_N-2_CP4_SB
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Bushfire. 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
Lines: Farrell - Sheffield No. 1 and 2 220kV Lines
Duration:12:50 hrs 22/04/2024 until further notice
Constraint set(s) invoked:
T-NIL_WCP_CLOSE
F-FASH_N-2_CP4_SB
Manager NEM Real Time Operations
116266MARKET INTERVENTION22/04/2024 02:00:32 PM
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 21/04/2024
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 21/04/2024
Refer Market Notice 116232
The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs 22/04/2024
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 21/04/2024
Refer Market Notice 116232
The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs 22/04/2024
Manager NEM Real Time Operations
116263MARKET INTERVENTION22/04/2024 12:06:20 PM
Direction - SA region 22/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 22/04/2024
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 1205 hrs on 22/04/2024.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 22/04/2024
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 1205 hrs on 22/04/2024.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
116258MARKET INTERVENTION22/04/2024 10:25:53 AM
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 116234
The synchronous generating units currently expected to be synchronised in SA from 0001 hrs 23/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1200 hrs 22/04/2024, 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 116234
The synchronous generating units currently expected to be synchronised in SA from 0001 hrs 23/04/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1200 hrs 22/04/2024, 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